Examples: Updated for reorganized context functions. Calling CreateContext(), DestroyContext() in example code. Removed Shutdown() from binding code. (#1565, #586, #992, #1007, #1558)

examples/allegro5_example/imgui_impl_a5.cpp

@@ -200,7 +200,6 @@ bool ImGui_ImplA5_Init(ALLEGRO_DISPLAY* display)
 void ImGui_ImplA5_Shutdown()
 {
     ImGui_ImplA5_InvalidateDeviceObjects();
-    ImGui::Shutdown();
 }
 
 // You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.

examples/allegro5_example/main.cpp

@@ -23,6 +23,7 @@ int main(int, char**)
     al_register_event_source(queue, al_get_mouse_event_source());
 
     // Setup ImGui binding
+    ImGui::CreateContext();
     ImGui_ImplA5_Init(display);
 
     // Setup style
@@ -109,6 +110,7 @@ int main(int, char**)
 
     // Cleanup
     ImGui_ImplA5_Shutdown();
+    ImGui::DestroyContext();
     al_destroy_event_queue(queue);
     al_destroy_display(display);