Examples: Tweaked the main.cpp example structure for all examples. (There are a few hidden agendas here: 1) I would like to avoid encouraging people from using the implicit "Debug" window, and promote using Begin/End. In spite of my best attempt, there are a few feature of the upcoming docking system that cannot work 100% properly for the implicit Debug window, so future proof let's not put that feature in the spotlight too much for new users. 2) Moved dumb hardcoded positions into a single spot that can be replaced with a viewport relative position and not affect other demo windows. 3) Calling ShowDemoWindow before anything else, also for the benefit of a specific docking demo which will have an ordering constraint which is not really problematic in a real app but shouldn't be put forward in the demo.

CHANGELOG.txt

@@ -57,6 +57,7 @@ Other Changes:
  - Fixed a include build issue for Cygwin in non-POSIX (Win32) mode. (#1917, #1319, #276)
  - OS/Windows: Fixed missing ImmReleaseContext() call in the default Win32 IME handler. (#1932) [@vby]
  - Demo: Added basic Drag and Drop demo. (#143)
+ - Examples: Tweaked the main.cpp of each example.
  - Examples: Metal: Added Metal rendering backend. (#1929, #1873) [@warrenm]
  - Examples: OSX: Added early raw OSX platform backend. (#1873) [@pagghiu, @itamago, @ocornut]
  - Examples: Added mac OSX & iOS + Metal example in example_apple_metal/. (#1929, #1873) [@warrenm]

examples/example_allegro5/main.cpp

@@ -75,47 +75,47 @@ int main(int, char**)
             }
         }
 
-        // Start the ImGui frame
+        // Start the Dear ImGui frame
         ImGui_ImplAllegro5_NewFrame();
         ImGui::NewFrame();
 
-        // 1. Show a simple window.
+        // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
-        // Tip: if we don't call ImGui::Begin()/ImGui::End() the widgets automatically appears in a window called "Debug".
+        if (show_demo_window)
+            ImGui::ShowDemoWindow(&show_demo_window);
+
+        // 2. Show a simple window that we create ourselves. We use a Begin/End pair to created a named window.
         {
             static float f = 0.0f;
             static int counter = 0;
-            ImGui::Text("Hello, world!");                           // Display some text (you can use a format string too)
+
+            ImGui::Begin("Hello, world!");                          // Create a window called "Hello, world!" and append into it.
+
+            ImGui::Text("This is some useful text.");               // Display some text (you can use a format strings too)
+            ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our window open/close state
+            ImGui::Checkbox("Another Window", &show_another_window);
+
             ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f    
             ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
 
-            ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our windows open/close state
+            if (ImGui::Button("Button"))                            // Buttons return true when clicked (most widgets return true when edited/activated)
-            ImGui::Checkbox("Another Window", &show_another_window);
-
-            if (ImGui::Button("Button"))                            // Buttons return true when clicked (NB: most widgets return true when edited/activated)
                 counter++;
             ImGui::SameLine();
             ImGui::Text("counter = %d", counter);
 
             ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
+            ImGui::End();
         }
 
-        // 2. Show another simple window. In most cases you will use an explicit Begin/End pair to name your windows.
+        // 3. Show another simple window.
         if (show_another_window)
         {
-            ImGui::Begin("Another Window", &show_another_window);
+            ImGui::Begin("Another Window", &show_another_window);   // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
             ImGui::Text("Hello from another window!");
             if (ImGui::Button("Close Me"))
                 show_another_window = false;
             ImGui::End();
         }
 
-        // 3. Show the ImGui demo window. Most of the sample code is in ImGui::ShowDemoWindow(). Read its code to learn more about Dear ImGui!
-        if (show_demo_window)
-        {
-            ImGui::SetNextWindowPos(ImVec2(650, 20), ImGuiCond_FirstUseEver); // Normally user code doesn't need/want to call this because positions are saved in .ini file anyway. Here we just want to make the demo initial state a bit more friendly!
-            ImGui::ShowDemoWindow(&show_demo_window);
-        }
-
         // Rendering
         ImGui::Render();
         al_clear_to_color(al_map_rgba_f(clear_color.x, clear_color.y, clear_color.z, clear_color.w));

examples/example_apple_metal/Shared/Renderer.mm

@@ -58,65 +58,65 @@
     static float clear_color[4] = { 0.28f, 0.36f, 0.5f, 1.0f };
 
     MTLRenderPassDescriptor *renderPassDescriptor = view.currentRenderPassDescriptor;
-    if(renderPassDescriptor != nil)
+    if (renderPassDescriptor != nil)
     {
         renderPassDescriptor.colorAttachments[0].clearColor = MTLClearColorMake(clear_color[0], clear_color[1], clear_color[2], clear_color[3]);
 
         // Here, you could do additional rendering work, including other passes as necessary.
 
         id <MTLRenderCommandEncoder> renderEncoder = [commandBuffer renderCommandEncoderWithDescriptor:renderPassDescriptor];
+        [renderEncoder pushDebugGroup:@"ImGui demo"];
 
-        [renderEncoder pushDebugGroup:@"Draw ImGui"];
+        // Start the Dear ImGui frame
-
         ImGui_ImplMetal_NewFrame(renderPassDescriptor);
 #if TARGET_OS_OSX
         ImGui_ImplOSX_NewFrame(view);
 #endif
         ImGui::NewFrame();
 
+        // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
+        if (show_demo_window)
+            ImGui::ShowDemoWindow(&show_demo_window);
+
+        // 2. Show a simple window that we create ourselves. We use a Begin/End pair to created a named window.
         {
             static float f = 0.0f;
             static int counter = 0;
-            ImGui::Text("Hello, world!");                           // Display some text (you can use a format string too)
-            ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f
-            ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
 
-            ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our windows open/close state
+            ImGui::Begin("Hello, world!");                          // Create a window called "Hello, world!" and append into it.
+
+            ImGui::Text("This is some useful text.");               // Display some text (you can use a format strings too)
+            ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our window open/close state
             ImGui::Checkbox("Another Window", &show_another_window);
 
-            if (ImGui::Button("Button"))                            // Buttons return true when clicked (NB: most widgets return true when edited/activated)
+            ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f    
+            ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
+
+            if (ImGui::Button("Button"))                            // Buttons return true when clicked (most widgets return true when edited/activated)
                 counter++;
             ImGui::SameLine();
             ImGui::Text("counter = %d", counter);
 
             ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
+            ImGui::End();
         }
-        
+
-        // 2. Show another simple window. In most cases you will use an explicit Begin/End pair to name your windows.
+        // 3. Show another simple window.
         if (show_another_window)
         {
-            ImGui::Begin("Another Window", &show_another_window);
+            ImGui::Begin("Another Window", &show_another_window);   // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
             ImGui::Text("Hello from another window!");
             if (ImGui::Button("Close Me"))
                 show_another_window = false;
             ImGui::End();
         }
-        
+
-        // 3. Show the ImGui demo window. Most of the sample code is in ImGui::ShowDemoWindow(). Read its code to learn more about Dear ImGui!
+        // Rendering
-        if (show_demo_window)
-        {
-            // Normally user code doesn't need/want to call this because positions are saved in .ini file anyway.
-            // Here we just want to make the demo initial state a bit more friendly!
-            ImGui::SetNextWindowPos(ImVec2(650, 20), ImGuiCond_FirstUseEver);
-            ImGui::ShowDemoWindow(&show_demo_window);
-        }
-        
         ImGui::Render();
         ImDrawData *drawData = ImGui::GetDrawData();
         ImGui_ImplMetal_RenderDrawData(drawData, commandBuffer, renderEncoder);
         
         [renderEncoder popDebugGroup];
-
         [renderEncoder endEncoding];
 
         [commandBuffer presentDrawable:view.currentDrawable];

examples/example_apple_opengl2/main.mm

@@ -40,6 +40,7 @@
 
 -(void)updateAndDrawDemoView
 {
+    // Start the Dear ImGui frame
 	ImGui_ImplOpenGL2_NewFrame();
 	ImGui_ImplOSX_NewFrame(self);
     ImGui::NewFrame();
@@ -49,42 +50,42 @@
     static bool show_another_window = false;
     static ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
 
-	// 1. Show a simple window.
+    // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
-	// Tip: if we don't call ImGui::Begin()/ImGui::End() the widgets automatically appears in a window called "Debug".
+    if (show_demo_window)
-	{
+        ImGui::ShowDemoWindow(&show_demo_window);
-		static float f = 0.0f;
-		static int counter = 0;
-		ImGui::Text("Hello, world!");                           // Display some text (you can use a format string too)
-		ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f
-		ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
 
-		ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our windows open/close state
+    // 2. Show a simple window that we create ourselves. We use a Begin/End pair to created a named window.
-		ImGui::Checkbox("Another Window", &show_another_window);
+    {
+        static float f = 0.0f;
+        static int counter = 0;
 
-		if (ImGui::Button("Button"))                            // Buttons return true when clicked (NB: most widgets return true when edited/activated)
+        ImGui::Begin("Hello, world!");                          // Create a window called "Hello, world!" and append into it.
-			counter++;
-		ImGui::SameLine();
-		ImGui::Text("counter = %d", counter);
 
-		ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
+        ImGui::Text("This is some useful text.");               // Display some text (you can use a format strings too)
-	}
+        ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our window open/close state
+        ImGui::Checkbox("Another Window", &show_another_window);
 
-	// 2. Show another simple window. In most cases you will use an explicit Begin/End pair to name your windows.
+        ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f    
-	if (show_another_window)
+        ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
-	{
-		ImGui::Begin("Another Window", &show_another_window);
-		ImGui::Text("Hello from another window!");
-		if (ImGui::Button("Close Me"))
-			show_another_window = false;
-		ImGui::End();
-	}
 
-	// 3. Show the ImGui demo window. Most of the sample code is in ImGui::ShowDemoWindow(). Read its code to learn more about Dear ImGui!
+        if (ImGui::Button("Button"))                            // Buttons return true when clicked (most widgets return true when edited/activated)
-	if (show_demo_window)
+            counter++;
-	{
+        ImGui::SameLine();
-		ImGui::SetNextWindowPos(ImVec2(650, 20), ImGuiCond_FirstUseEver); // Normally user code doesn't need/want to call this because positions are saved in .ini file anyway. Here we just want to make the demo initial state a bit more friendly!
+        ImGui::Text("counter = %d", counter);
-		ImGui::ShowDemoWindow(&show_demo_window);
+
-	}
+        ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
+        ImGui::End();
+    }
+
+    // 3. Show another simple window.
+    if (show_another_window)
+    {
+        ImGui::Begin("Another Window", &show_another_window);   // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
+        ImGui::Text("Hello from another window!");
+        if (ImGui::Button("Close Me"))
+            show_another_window = false;
+        ImGui::End();
+    }
 
 	// Rendering
 	ImGui::Render();

examples/example_freeglut_opengl2/main.cpp

@@ -17,53 +17,54 @@ static ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
 
 void my_display_code()
 {
-    // 1. Show a simple window.
+    // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
-    // Tip: if we don't call ImGui::Begin()/ImGui::End() the widgets automatically appears in a window called "Debug".
+    if (show_demo_window)
+        ImGui::ShowDemoWindow(&show_demo_window);
+
+    // 2. Show a simple window that we create ourselves. We use a Begin/End pair to created a named window.
     {
         static float f = 0.0f;
         static int counter = 0;
-        ImGui::Text("Hello, world!");                           // Display some text (you can use a format string too)
+
+        ImGui::Begin("Hello, world!");                          // Create a window called "Hello, world!" and append into it.
+
+        ImGui::Text("This is some useful text.");               // Display some text (you can use a format strings too)
+        ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our window open/close state
+        ImGui::Checkbox("Another Window", &show_another_window);
+
         ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f    
         ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
 
-        ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our windows open/close state
+        if (ImGui::Button("Button"))                            // Buttons return true when clicked (most widgets return true when edited/activated)
-        ImGui::Checkbox("Another Window", &show_another_window);
-
-        if (ImGui::Button("Button"))                            // Buttons return true when clicked (NB: most widgets return true when edited/activated)
             counter++;
         ImGui::SameLine();
         ImGui::Text("counter = %d", counter);
 
         ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
+        ImGui::End();
     }
 
-    // 2. Show another simple window. In most cases you will use an explicit Begin/End pair to name your windows.
+    // 3. Show another simple window.
     if (show_another_window)
     {
-        ImGui::Begin("Another Window", &show_another_window);
+        ImGui::Begin("Another Window", &show_another_window);   // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
         ImGui::Text("Hello from another window!");
         if (ImGui::Button("Close Me"))
             show_another_window = false;
         ImGui::End();
     }
-
-    // 3. Show the ImGui demo window. Most of the sample code is in ImGui::ShowDemoWindow(). Read its code to learn more about Dear ImGui!
-    if (show_demo_window)
-    {
-        ImGui::SetNextWindowPos(ImVec2(650, 20), ImGuiCond_FirstUseEver); // Normally user code doesn't need/want to call this because positions are saved in .ini file anyway. Here we just want to make the demo initial state a bit more friendly!
-        ImGui::ShowDemoWindow(&show_demo_window);
-    }
 }
 
 void glut_display_func()
 {
+    // Start the ImGui frame
     ImGui_ImplOpenGL2_NewFrame();
     ImGui_ImplFreeGLUT_NewFrame();
 
     my_display_code();
 
+    // Rendering
     ImGui::Render();
-
     ImGuiIO& io = ImGui::GetIO();
     glViewport(0, 0, (GLsizei)io.DisplaySize.x, (GLsizei)io.DisplaySize.y);
     glClearColor(clear_color.x, clear_color.y, clear_color.z, clear_color.w);

examples/example_glfw_opengl2/main.cpp

@@ -72,48 +72,48 @@ int main(int, char**)
         // Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
         glfwPollEvents();
 
-        // Start the ImGui frame
+        // Start the Dear ImGui frame
         ImGui_ImplOpenGL2_NewFrame();
         ImGui_ImplGlfw_NewFrame();
         ImGui::NewFrame();
 
-        // 1. Show a simple window.
+        // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
-        // Tip: if we don't call ImGui::Begin()/ImGui::End() the widgets automatically appears in a window called "Debug".
+        if (show_demo_window)
+            ImGui::ShowDemoWindow(&show_demo_window);
+
+        // 2. Show a simple window that we create ourselves. We use a Begin/End pair to created a named window.
         {
             static float f = 0.0f;
             static int counter = 0;
-            ImGui::Text("Hello, world!");                           // Display some text (you can use a format string too)
+
+            ImGui::Begin("Hello, world!");                          // Create a window called "Hello, world!" and append into it.
+
+            ImGui::Text("This is some useful text.");               // Display some text (you can use a format strings too)
+            ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our window open/close state
+            ImGui::Checkbox("Another Window", &show_another_window);
+
             ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f    
             ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
 
-            ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our windows open/close state
+            if (ImGui::Button("Button"))                            // Buttons return true when clicked (most widgets return true when edited/activated)
-            ImGui::Checkbox("Another Window", &show_another_window);
-
-            if (ImGui::Button("Button"))                            // Buttons return true when clicked (NB: most widgets return true when edited/activated)
                 counter++;
             ImGui::SameLine();
             ImGui::Text("counter = %d", counter);
 
             ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
+            ImGui::End();
         }
 
-        // 2. Show another simple window. In most cases you will use an explicit Begin/End pair to name your windows.
+        // 3. Show another simple window.
         if (show_another_window)
         {
-            ImGui::Begin("Another Window", &show_another_window);
+            ImGui::Begin("Another Window", &show_another_window);   // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
             ImGui::Text("Hello from another window!");
             if (ImGui::Button("Close Me"))
                 show_another_window = false;
             ImGui::End();
         }
 
-        // 3. Show the ImGui demo window. Most of the sample code is in ImGui::ShowDemoWindow(). Read its code to learn more about Dear ImGui!
-        if (show_demo_window)
-        {
-            ImGui::SetNextWindowPos(ImVec2(650, 20), ImGuiCond_FirstUseEver); // Normally user code doesn't need/want to call this because positions are saved in .ini file anyway. Here we just want to make the demo initial state a bit more friendly!
-            ImGui::ShowDemoWindow(&show_demo_window);
-        }
-
         // Rendering
         ImGui::Render();
         int display_w, display_h;

examples/example_glfw_opengl3/main.cpp

@@ -95,48 +95,48 @@ int main(int, char**)
         // Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
         glfwPollEvents();
 
-        // Start the ImGui frame
+        // Start the Dear ImGui frame
         ImGui_ImplOpenGL3_NewFrame();
         ImGui_ImplGlfw_NewFrame();
         ImGui::NewFrame();
 
-        // 1. Show a simple window.
+        // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
-        // Tip: if we don't call ImGui::Begin()/ImGui::End() the widgets automatically appears in a window called "Debug".
+        if (show_demo_window)
+            ImGui::ShowDemoWindow(&show_demo_window);
+
+        // 2. Show a simple window that we create ourselves. We use a Begin/End pair to created a named window.
         {
             static float f = 0.0f;
             static int counter = 0;
-            ImGui::Text("Hello, world!");                           // Display some text (you can use a format string too)
+
+            ImGui::Begin("Hello, world!");                          // Create a window called "Hello, world!" and append into it.
+
+            ImGui::Text("This is some useful text.");               // Display some text (you can use a format strings too)
+            ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our window open/close state
+            ImGui::Checkbox("Another Window", &show_another_window);
+
             ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f    
             ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
 
-            ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our windows open/close state
+            if (ImGui::Button("Button"))                            // Buttons return true when clicked (most widgets return true when edited/activated)
-            ImGui::Checkbox("Another Window", &show_another_window);
-
-            if (ImGui::Button("Button"))                            // Buttons return true when clicked (NB: most widgets return true when edited/activated)
                 counter++;
             ImGui::SameLine();
             ImGui::Text("counter = %d", counter);
 
             ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
+            ImGui::End();
         }
 
-        // 2. Show another simple window. In most cases you will use an explicit Begin/End pair to name your windows.
+        // 3. Show another simple window.
         if (show_another_window)
         {
-            ImGui::Begin("Another Window", &show_another_window);
+            ImGui::Begin("Another Window", &show_another_window);   // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
             ImGui::Text("Hello from another window!");
             if (ImGui::Button("Close Me"))
                 show_another_window = false;
             ImGui::End();
         }
 
-        // 3. Show the ImGui demo window. Most of the sample code is in ImGui::ShowDemoWindow(). Read its code to learn more about Dear ImGui!
-        if (show_demo_window)
-        {
-            ImGui::SetNextWindowPos(ImVec2(650, 20), ImGuiCond_FirstUseEver); // Normally user code doesn't need/want to call this because positions are saved in .ini file anyway. Here we just want to make the demo initial state a bit more friendly!
-            ImGui::ShowDemoWindow(&show_demo_window);
-        }
-
         // Rendering
         ImGui::Render();
         int display_w, display_h;

examples/example_glfw_vulkan/main.cpp

@@ -433,48 +433,48 @@ int main(int, char**)
 			g_ResizeWanted = false;
 		}
 
-        // Start the ImGui frame
+        // Start the Dear ImGui frame
         ImGui_ImplVulkan_NewFrame();
         ImGui_ImplGlfw_NewFrame();
         ImGui::NewFrame();
 
-        // 1. Show a simple window.
+        // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
-        // Tip: if we don't call ImGui::Begin()/ImGui::End() the widgets automatically appears in a window called "Debug".
+        if (show_demo_window)
+            ImGui::ShowDemoWindow(&show_demo_window);
+
+        // 2. Show a simple window that we create ourselves. We use a Begin/End pair to created a named window.
         {
             static float f = 0.0f;
             static int counter = 0;
-            ImGui::Text("Hello, world!");                           // Display some text (you can use a format string too)
-            ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f    
-            ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color (nb: you could use (float*)&wd->ClearValue instead)
 
-            ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our windows open/close state
+            ImGui::Begin("Hello, world!");                          // Create a window called "Hello, world!" and append into it.
+
+            ImGui::Text("This is some useful text.");               // Display some text (you can use a format strings too)
+            ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our window open/close state
             ImGui::Checkbox("Another Window", &show_another_window);
 
-            if (ImGui::Button("Button"))                            // Buttons return true when clicked (NB: most widgets return true when edited/activated)
+            ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f    
+            ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
+
+            if (ImGui::Button("Button"))                            // Buttons return true when clicked (most widgets return true when edited/activated)
                 counter++;
             ImGui::SameLine();
             ImGui::Text("counter = %d", counter);
 
             ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
+            ImGui::End();
         }
 
-        // 2. Show another simple window. In most cases you will use an explicit Begin/End pair to name your windows.
+        // 3. Show another simple window.
         if (show_another_window)
         {
-            ImGui::Begin("Another Window", &show_another_window);
+            ImGui::Begin("Another Window", &show_another_window);   // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
             ImGui::Text("Hello from another window!");
             if (ImGui::Button("Close Me"))
                 show_another_window = false;
             ImGui::End();
         }
 
-        // 3. Show the ImGui demo window. Most of the sample code is in ImGui::ShowDemoWindow(). Read its code to learn more about Dear ImGui!
-        if (show_demo_window)
-        {
-            ImGui::SetNextWindowPos(ImVec2(650, 20), ImGuiCond_FirstUseEver); // Normally user code doesn't need/want to call this because positions are saved in .ini file anyway. Here we just want to make the demo initial state a bit more friendly!
-            ImGui::ShowDemoWindow(&show_demo_window);
-        }
-
         // Rendering
         ImGui::Render();
         memcpy(&wd->ClearValue.color.float32[0], &clear_color, 4 * sizeof(float));

examples/example_marmalade/main.cpp

@@ -60,47 +60,47 @@ int main(int, char**)
         s3eKeyboardUpdate();
         s3ePointerUpdate();
 
-        // Start the ImGui frame
+        // Start the Dear ImGui frame
         ImGui_Marmalade_NewFrame();
         ImGui::NewFrame();
 
-        // 1. Show a simple window.
+        // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
-        // Tip: if we don't call ImGui::Begin()/ImGui::End() the widgets automatically appears in a window called "Debug".
+        if (show_demo_window)
+            ImGui::ShowDemoWindow(&show_demo_window);
+
+        // 2. Show a simple window that we create ourselves. We use a Begin/End pair to created a named window.
         {
             static float f = 0.0f;
             static int counter = 0;
-            ImGui::Text("Hello, world!");                           // Display some text (you can use a format string too)
+
+            ImGui::Begin("Hello, world!");                          // Create a window called "Hello, world!" and append into it.
+
+            ImGui::Text("This is some useful text.");               // Display some text (you can use a format strings too)
+            ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our window open/close state
+            ImGui::Checkbox("Another Window", &show_another_window);
+
             ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f    
             ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
 
-            ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our windows open/close state
+            if (ImGui::Button("Button"))                            // Buttons return true when clicked (most widgets return true when edited/activated)
-            ImGui::Checkbox("Another Window", &show_another_window);
-
-            if (ImGui::Button("Button"))                            // Buttons return true when clicked (NB: most widgets return true when edited/activated)
                 counter++;
             ImGui::SameLine();
             ImGui::Text("counter = %d", counter);
 
             ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
+            ImGui::End();
         }
 
-        // 2. Show another simple window. In most cases you will use an explicit Begin/End pair to name your windows.
+        // 3. Show another simple window.
         if (show_another_window)
         {
-            ImGui::Begin("Another Window", &show_another_window);
+            ImGui::Begin("Another Window", &show_another_window);   // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
             ImGui::Text("Hello from another window!");
             if (ImGui::Button("Close Me"))
                 show_another_window = false;
             ImGui::End();
         }
 
-        // 3. Show the ImGui demo window. Most of the sample code is in ImGui::ShowDemoWindow(). Read its code to learn more about Dear ImGui!
-        if (show_demo_window)
-        {
-            ImGui::SetNextWindowPos(ImVec2(650, 20), ImGuiCond_FirstUseEver); // Normally user code doesn't need/want to call this because positions are saved in .ini file anyway. Here we just want to make the demo initial state a bit more friendly!
-            ImGui::ShowDemoWindow(&show_demo_window);
-        }
-
         // Rendering
         ImGui::Render();
         IwGxSetColClear(clear_color.x * 255, clear_color.y * 255, clear_color.z * 255, clear_color.w * 255);

examples/example_sdl_opengl2/main.cpp

@@ -83,48 +83,48 @@ int main(int, char**)
                 done = true;
         }
 
-        // Start the ImGui frame
+        // Start the Dear ImGui frame
         ImGui_ImplOpenGL2_NewFrame();
         ImGui_ImplSDL2_NewFrame(window);
         ImGui::NewFrame();
 
-        // 1. Show a simple window.
+        // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
-        // Tip: if we don't call ImGui::Begin()/ImGui::End() the widgets automatically appears in a window called "Debug".
+        if (show_demo_window)
+            ImGui::ShowDemoWindow(&show_demo_window);
+
+        // 2. Show a simple window that we create ourselves. We use a Begin/End pair to created a named window.
         {
             static float f = 0.0f;
             static int counter = 0;
-            ImGui::Text("Hello, world!");                           // Display some text (you can use a format string too)
+
+            ImGui::Begin("Hello, world!");                          // Create a window called "Hello, world!" and append into it.
+
+            ImGui::Text("This is some useful text.");               // Display some text (you can use a format strings too)
+            ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our window open/close state
+            ImGui::Checkbox("Another Window", &show_another_window);
+
             ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f    
             ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
 
-            ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our windows open/close state
+            if (ImGui::Button("Button"))                            // Buttons return true when clicked (most widgets return true when edited/activated)
-            ImGui::Checkbox("Another Window", &show_another_window);
-
-            if (ImGui::Button("Button"))                            // Buttons return true when clicked (NB: most widgets return true when edited/activated)
                 counter++;
             ImGui::SameLine();
             ImGui::Text("counter = %d", counter);
 
             ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
+            ImGui::End();
         }
 
-        // 2. Show another simple window. In most cases you will use an explicit Begin/End pair to name your windows.
+        // 3. Show another simple window.
         if (show_another_window)
         {
-            ImGui::Begin("Another Window", &show_another_window);
+            ImGui::Begin("Another Window", &show_another_window);   // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
             ImGui::Text("Hello from another window!");
             if (ImGui::Button("Close Me"))
                 show_another_window = false;
             ImGui::End();
         }
 
-        // 3. Show the ImGui demo window. Most of the sample code is in ImGui::ShowDemoWindow(). Read its code to learn more about Dear ImGui!
-        if (show_demo_window)
-        {
-            ImGui::SetNextWindowPos(ImVec2(650, 20), ImGuiCond_FirstUseEver); // Normally user code doesn't need/want to call this because positions are saved in .ini file anyway. Here we just want to make the demo initial state a bit more friendly!
-            ImGui::ShowDemoWindow(&show_demo_window);
-        }
-
         // Rendering
         ImGui::Render();
         glViewport(0, 0, (int)io.DisplaySize.x, (int)io.DisplaySize.y);

examples/example_sdl_opengl3/main.cpp

@@ -102,48 +102,48 @@ int main(int, char**)
                 done = true;
         }
 
-        // Start the ImGui frame
+        // Start the Dear ImGui frame
         ImGui_ImplOpenGL3_NewFrame();
         ImGui_ImplSDL2_NewFrame(window);
         ImGui::NewFrame();
 
-        // 1. Show a simple window.
+        // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
-        // Tip: if we don't call ImGui::Begin()/ImGui::End() the widgets automatically appears in a window called "Debug".
+        if (show_demo_window)
+            ImGui::ShowDemoWindow(&show_demo_window);
+
+        // 2. Show a simple window that we create ourselves. We use a Begin/End pair to created a named window.
         {
             static float f = 0.0f;
             static int counter = 0;
-            ImGui::Text("Hello, world!");                           // Display some text (you can use a format string too)
+
+            ImGui::Begin("Hello, world!");                          // Create a window called "Hello, world!" and append into it.
+
+            ImGui::Text("This is some useful text.");               // Display some text (you can use a format strings too)
+            ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our window open/close state
+            ImGui::Checkbox("Another Window", &show_another_window);
+
             ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f    
             ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
 
-            ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our windows open/close state
+            if (ImGui::Button("Button"))                            // Buttons return true when clicked (most widgets return true when edited/activated)
-            ImGui::Checkbox("Another Window", &show_another_window);
-
-            if (ImGui::Button("Button"))                            // Buttons return true when clicked (NB: most widgets return true when edited/activated)
                 counter++;
             ImGui::SameLine();
             ImGui::Text("counter = %d", counter);
 
             ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
+            ImGui::End();
         }
 
-        // 2. Show another simple window. In most cases you will use an explicit Begin/End pair to name your windows.
+        // 3. Show another simple window.
         if (show_another_window)
         {
-            ImGui::Begin("Another Window", &show_another_window);
+            ImGui::Begin("Another Window", &show_another_window);   // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
             ImGui::Text("Hello from another window!");
             if (ImGui::Button("Close Me"))
                 show_another_window = false;
             ImGui::End();
         }
 
-        // 3. Show the ImGui demo window. Most of the sample code is in ImGui::ShowDemoWindow(). Read its code to learn more about Dear ImGui!
-        if (show_demo_window)
-        {
-            ImGui::SetNextWindowPos(ImVec2(650, 20), ImGuiCond_FirstUseEver); // Normally user code doesn't need/want to call this because positions are saved in .ini file anyway. Here we just want to make the demo initial state a bit more friendly!
-            ImGui::ShowDemoWindow(&show_demo_window);
-        }
-
         // Rendering
         ImGui::Render();
         SDL_GL_MakeCurrent(window, gl_context);

examples/example_sdl_vulkan/main.cpp

@@ -425,48 +425,48 @@ int main(int, char**)
                 ImGui_ImplVulkanH_CreateWindowDataSwapChainAndFramebuffer(g_PhysicalDevice, g_Device, &g_WindowData, g_Allocator, (int)event.window.data1, (int)event.window.data2);
         }
 
-        // Start the ImGui frame
+        // Start the Dear ImGui frame
         ImGui_ImplVulkan_NewFrame();
         ImGui_ImplSDL2_NewFrame(window);
         ImGui::NewFrame();
 
-        // 1. Show a simple window.
+        // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
-        // Tip: if we don't call ImGui::Begin()/ImGui::End() the widgets automatically appears in a window called "Debug".
+        if (show_demo_window)
+            ImGui::ShowDemoWindow(&show_demo_window);
+
+        // 2. Show a simple window that we create ourselves. We use a Begin/End pair to created a named window.
         {
             static float f = 0.0f;
             static int counter = 0;
-            ImGui::Text("Hello, world!");                           // Display some text (you can use a format string too)
+
+            ImGui::Begin("Hello, world!");                          // Create a window called "Hello, world!" and append into it.
+
+            ImGui::Text("This is some useful text.");               // Display some text (you can use a format strings too)
+            ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our window open/close state
+            ImGui::Checkbox("Another Window", &show_another_window);
+
             ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f    
             ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
 
-            ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our windows open/close state
+            if (ImGui::Button("Button"))                            // Buttons return true when clicked (most widgets return true when edited/activated)
-            ImGui::Checkbox("Another Window", &show_another_window);
-
-            if (ImGui::Button("Button"))                            // Buttons return true when clicked (NB: most widgets return true when edited/activated)
                 counter++;
             ImGui::SameLine();
             ImGui::Text("counter = %d", counter);
 
             ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
+            ImGui::End();
         }
 
-        // 2. Show another simple window. In most cases you will use an explicit Begin/End pair to name your windows.
+        // 3. Show another simple window.
         if (show_another_window)
         {
-            ImGui::Begin("Another Window", &show_another_window);
+            ImGui::Begin("Another Window", &show_another_window);   // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
             ImGui::Text("Hello from another window!");
             if (ImGui::Button("Close Me"))
                 show_another_window = false;
             ImGui::End();
         }
 
-        // 3. Show the ImGui demo window. Most of the sample code is in ImGui::ShowDemoWindow(). Read its code to learn more about Dear ImGui!
-        if (show_demo_window)
-        {
-            ImGui::SetNextWindowPos(ImVec2(650, 20), ImGuiCond_FirstUseEver); // Normally user code doesn't need/want to call this because positions are saved in .ini file anyway. Here we just want to make the demo initial state a bit more friendly!
-            ImGui::ShowDemoWindow(&show_demo_window);
-        }
-
         // Rendering
         ImGui::Render();
         memcpy(&wd->ClearValue.color.float32[0], &clear_color, 4 * sizeof(float));

examples/example_win32_directx10/main.cpp

@@ -161,48 +161,48 @@ int main(int, char**)
             continue;
         }
 
-        // Start the ImGui frame
+        // Start the Dear ImGui frame
         ImGui_ImplDX10_NewFrame();
         ImGui_ImplWin32_NewFrame();
         ImGui::NewFrame();
 
-        // 1. Show a simple window.
+        // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
-        // Tip: if we don't call ImGui::Begin()/ImGui::End() the widgets automatically appears in a window called "Debug".
+        if (show_demo_window)
+            ImGui::ShowDemoWindow(&show_demo_window);
+
+        // 2. Show a simple window that we create ourselves. We use a Begin/End pair to created a named window.
         {
             static float f = 0.0f;
             static int counter = 0;
-            ImGui::Text("Hello, world!");                           // Display some text (you can use a format string too)
+
+            ImGui::Begin("Hello, world!");                          // Create a window called "Hello, world!" and append into it.
+
+            ImGui::Text("This is some useful text.");               // Display some text (you can use a format strings too)
+            ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our window open/close state
+            ImGui::Checkbox("Another Window", &show_another_window);
+
             ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f    
             ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
 
-            ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our windows open/close state
+            if (ImGui::Button("Button"))                            // Buttons return true when clicked (most widgets return true when edited/activated)
-            ImGui::Checkbox("Another Window", &show_another_window);
-
-            if (ImGui::Button("Button"))                            // Buttons return true when clicked (NB: most widgets return true when edited/activated)
                 counter++;
             ImGui::SameLine();
             ImGui::Text("counter = %d", counter);
 
             ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
+            ImGui::End();
         }
 
-        // 2. Show another simple window. In most cases you will use an explicit Begin/End pair to name your windows.
+        // 3. Show another simple window.
         if (show_another_window)
         {
-            ImGui::Begin("Another Window", &show_another_window);
+            ImGui::Begin("Another Window", &show_another_window);   // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
             ImGui::Text("Hello from another window!");
             if (ImGui::Button("Close Me"))
                 show_another_window = false;
             ImGui::End();
         }
 
-        // 3. Show the ImGui demo window. Most of the sample code is in ImGui::ShowDemoWindow(). Read its code to learn more about Dear ImGui!
-        if (show_demo_window)
-        {
-            ImGui::SetNextWindowPos(ImVec2(650, 20), ImGuiCond_FirstUseEver); // Normally user code doesn't need/want to call this because positions are saved in .ini file anyway. Here we just want to make the demo initial state a bit more friendly!
-            ImGui::ShowDemoWindow(&show_demo_window);
-        }
-
         // Rendering
         ImGui::Render();
         g_pd3dDevice->OMSetRenderTargets(1, &g_mainRenderTargetView, NULL);

examples/example_win32_directx11/main.cpp

@@ -143,6 +143,7 @@ int main(int, char**)
     //ImFont* font = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
     //IM_ASSERT(font != NULL);
 
+    // Our state
     bool show_demo_window = true;
     bool show_another_window = false;
     ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
@@ -164,48 +165,48 @@ int main(int, char**)
             continue;
         }
 
-        // Start the ImGui frame
+        // Start the Dear ImGui frame
         ImGui_ImplDX11_NewFrame();
         ImGui_ImplWin32_NewFrame();
         ImGui::NewFrame();
 
-        // 1. Show a simple window.
+        // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
-        // Tip: if we don't call ImGui::Begin()/ImGui::End() the widgets automatically appears in a window called "Debug".
+        if (show_demo_window)
+            ImGui::ShowDemoWindow(&show_demo_window);
+
+        // 2. Show a simple window that we create ourselves. We use a Begin/End pair to created a named window.
         {
             static float f = 0.0f;
             static int counter = 0;
-            ImGui::Text("Hello, world!");                           // Display some text (you can use a format string too)
+
+            ImGui::Begin("Hello, world!");                          // Create a window called "Hello, world!" and append into it.
+
+            ImGui::Text("This is some useful text.");               // Display some text (you can use a format strings too)
+            ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our window open/close state
+            ImGui::Checkbox("Another Window", &show_another_window);
+
             ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f    
             ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
 
-            ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our windows open/close state
+            if (ImGui::Button("Button"))                            // Buttons return true when clicked (most widgets return true when edited/activated)
-            ImGui::Checkbox("Another Window", &show_another_window);
-
-            if (ImGui::Button("Button"))                            // Buttons return true when clicked (NB: most widgets return true when edited/activated)
                 counter++;
             ImGui::SameLine();
             ImGui::Text("counter = %d", counter);
 
             ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
+            ImGui::End();
         }
 
-        // 2. Show another simple window. In most cases you will use an explicit Begin/End pair to name your windows.
+        // 3. Show another simple window.
         if (show_another_window)
         {
-            ImGui::Begin("Another Window", &show_another_window);
+            ImGui::Begin("Another Window", &show_another_window);   // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
             ImGui::Text("Hello from another window!");
             if (ImGui::Button("Close Me"))
                 show_another_window = false;
             ImGui::End();
         }
 
-        // 3. Show the ImGui demo window. Most of the sample code is in ImGui::ShowDemoWindow(). Read its code to learn more about Dear ImGui!
-        if (show_demo_window)
-        {
-            ImGui::SetNextWindowPos(ImVec2(650, 20), ImGuiCond_FirstUseEver); // Normally user code doesn't need/want to call this because positions are saved in .ini file anyway. Here we just want to make the demo initial state a bit more friendly!
-            ImGui::ShowDemoWindow(&show_demo_window);
-        }
-
         // Rendering
         ImGui::Render();
         g_pd3dDeviceContext->OMSetRenderTargets(1, &g_mainRenderTargetView, NULL);

examples/example_win32_directx12/main.cpp

@@ -338,48 +338,48 @@ int main(int, char**)
             continue;
         }
 
-        // Start the ImGui frame
+        // Start the Dear ImGui frame
         ImGui_ImplDX12_NewFrame();
         ImGui_ImplWin32_NewFrame();
         ImGui::NewFrame();
 
-        // 1. Show a simple window.
+        // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
-        // Tip: if we don't call ImGui::Begin()/ImGui::End() the widgets automatically appears in a window called "Debug".
+        if (show_demo_window)
+            ImGui::ShowDemoWindow(&show_demo_window);
+
+        // 2. Show a simple window that we create ourselves. We use a Begin/End pair to created a named window.
         {
             static float f = 0.0f;
             static int counter = 0;
-            ImGui::Text("Hello, world!");                           // Display some text (you can use a format string too)
+
+            ImGui::Begin("Hello, world!");                          // Create a window called "Hello, world!" and append into it.
+
+            ImGui::Text("This is some useful text.");               // Display some text (you can use a format strings too)
+            ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our window open/close state
+            ImGui::Checkbox("Another Window", &show_another_window);
+
             ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f    
             ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
 
-            ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our windows open/close state
+            if (ImGui::Button("Button"))                            // Buttons return true when clicked (most widgets return true when edited/activated)
-            ImGui::Checkbox("Another Window", &show_another_window);
-
-            if (ImGui::Button("Button"))                            // Buttons return true when clicked (NB: most widgets return true when edited/activated)
                 counter++;
             ImGui::SameLine();
             ImGui::Text("counter = %d", counter);
 
             ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
+            ImGui::End();
         }
 
-        // 2. Show another simple window. In most cases you will use an explicit Begin/End pair to name your windows.
+        // 3. Show another simple window.
         if (show_another_window)
         {
-            ImGui::Begin("Another Window", &show_another_window);
+            ImGui::Begin("Another Window", &show_another_window);   // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
             ImGui::Text("Hello from another window!");
             if (ImGui::Button("Close Me"))
                 show_another_window = false;
             ImGui::End();
         }
 
-        // 3. Show the ImGui demo window. Most of the sample code is in ImGui::ShowDemoWindow(). Read its code to learn more about Dear ImGui!
-        if (show_demo_window)
-        {
-            ImGui::SetNextWindowPos(ImVec2(650, 20), ImGuiCond_FirstUseEver); // Normally user code doesn't need/want to call this because positions are saved in .ini file anyway. Here we just want to make the demo initial state a bit more friendly!
-            ImGui::ShowDemoWindow(&show_demo_window);
-        }
-
         // Rendering
         FrameContext* frameCtxt = WaitForNextFrameResources();
         UINT backBufferIdx = g_pSwapChain->GetCurrentBackBufferIndex();

examples/example_win32_directx9/main.cpp

@@ -125,48 +125,48 @@ int main(int, char**)
             continue;
         }
 
-        // Start the ImGui frame
+        // Start the Dear ImGui frame
         ImGui_ImplDX9_NewFrame();
         ImGui_ImplWin32_NewFrame();
         ImGui::NewFrame();
 
-        // 1. Show a simple window.
+        // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
-        // Tip: if we don't call ImGui::Begin()/ImGui::End() the widgets automatically appears in a window called "Debug".
+        if (show_demo_window)
+            ImGui::ShowDemoWindow(&show_demo_window);
+
+        // 2. Show a simple window that we create ourselves. We use a Begin/End pair to created a named window.
         {
             static float f = 0.0f;
             static int counter = 0;
-            ImGui::Text("Hello, world!");                           // Display some text (you can use a format string too)
+
+            ImGui::Begin("Hello, world!");                          // Create a window called "Hello, world!" and append into it.
+
+            ImGui::Text("This is some useful text.");               // Display some text (you can use a format strings too)
+            ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our window open/close state
+            ImGui::Checkbox("Another Window", &show_another_window);
+
             ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f    
             ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
 
-            ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our windows open/close state
+            if (ImGui::Button("Button"))                            // Buttons return true when clicked (most widgets return true when edited/activated)
-            ImGui::Checkbox("Another Window", &show_another_window);
-
-            if (ImGui::Button("Button"))                            // Buttons return true when clicked (NB: most widgets return true when edited/activated)
                 counter++;
             ImGui::SameLine();
             ImGui::Text("counter = %d", counter);
 
             ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
+            ImGui::End();
         }
 
-        // 2. Show another simple window. In most cases you will use an explicit Begin/End pair to name your windows.
+        // 3. Show another simple window.
         if (show_another_window)
         {
-            ImGui::Begin("Another Window", &show_another_window);
+            ImGui::Begin("Another Window", &show_another_window);   // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
             ImGui::Text("Hello from another window!");
             if (ImGui::Button("Close Me"))
                 show_another_window = false;
             ImGui::End();
         }
 
-        // 3. Show the ImGui demo window. Most of the sample code is in ImGui::ShowDemoWindow(). Read its code to learn more about Dear ImGui!
-        if (show_demo_window)
-        {
-            ImGui::SetNextWindowPos(ImVec2(650, 20), ImGuiCond_FirstUseEver); // Normally user code doesn't need/want to call this because positions are saved in .ini file anyway. Here we just want to make the demo initial state a bit more friendly!
-            ImGui::ShowDemoWindow(&show_demo_window);
-        }
-
         // Rendering
         ImGui::EndFrame();
         g_pd3dDevice->SetRenderState(D3DRS_ZENABLE, false);

imgui_demo.cpp

@@ -193,8 +193,9 @@ void ImGui::ShowDemoWindow(bool* p_open)
     if (no_nav)       window_flags |= ImGuiWindowFlags_NoNav;
     if (no_close)     p_open = NULL; // Don't pass our bool* to Begin
 
-    // We specify a default size in case there's no data in the .ini file. Typically this isn't required! We only do it to make the Demo applications a little more welcoming.
+    // We specify a default position/size in case there's no data in the .ini file. Typically this isn't required! We only do it to make the Demo applications a little more welcoming.
-    ImGui::SetNextWindowSize(ImVec2(550,680), ImGuiCond_FirstUseEver);
+    ImGui::SetNextWindowPos(ImVec2(650, 20), ImGuiCond_FirstUseEver);
+    ImGui::SetNextWindowSize(ImVec2(550, 680), ImGuiCond_FirstUseEver);
 
     // Main body of the Demo window starts here.
     if (!ImGui::Begin("ImGui Demo", p_open, window_flags))