Begin: WIP consistent Begin/End behavior.

examples/example_win32_directx11/main.cpp

@@ -122,17 +122,21 @@ int main(int, char**)
         ImGui_ImplWin32_NewFrame();
         ImGui::NewFrame();
 
+#if 1
+        // Enable Debugging
+        io.ConfigDebugBeginReturnValue = io.KeyShift;
+#endif
+
         // 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.
+        if (ImGui::Begin("Hello, world!"))                          // Create a window called "Hello, world!" and append into it.
         {
             static float f = 0.0f;
             static int counter = 0;
 
-            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);
@@ -150,9 +154,9 @@ int main(int, char**)
         }
 
         // 3. Show another simple window.
-        if (show_another_window)
+        // Passing a pointer to our bool variable in the Begin() call: the window will have a closing button that will clear the bool when clicked.
+        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;