ADDED: example: core_window_should_close

examples/core/core_window_should_close.c

@@ -0,0 +1,75 @@
+/*******************************************************************************************
+*
+*   raylib [core] example - Window should close
+*
+*   This example has been created using raylib 1.0 (www.raylib.com)
+*   raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
+*
+*   Copyright (c) 2013-2016 Ramon Santamaria (@raysan5)
+*
+********************************************************************************************/
+
+#include "raylib.h"
+
+//------------------------------------------------------------------------------------
+// Program main entry point
+//------------------------------------------------------------------------------------
+int main()
+{
+    // Initialization
+    //--------------------------------------------------------------------------------------
+    const int screenWidth = 800;
+    const int screenHeight = 450;
+
+    InitWindow(screenWidth, screenHeight, "raylib [core] example - window should close");
+    
+    SetExitKey(KEY_NULL);       // Disable KEY_ESCAPE to close window, X-button still works
+    
+    bool exitWindowRequested = false;   // Flag to request window to exit
+    bool exitWindow = false;    // Flag to set window to exit
+
+    SetTargetFPS(60);           // Set our game to run at 60 frames-per-second
+    //--------------------------------------------------------------------------------------
+
+    // Main game loop
+    while (!exitWindow)
+    {
+        // Update
+        //----------------------------------------------------------------------------------
+        // Detect if X-button or KEY_ESCAPE have been presssed to close window
+        if (WindowShouldClose() || IsKeyPressed(KEY_ESCAPE)) exitWindowRequested = true;
+        
+        if (exitWindowRequested)
+        {
+            // A request for close window has been issued, we can save data before closing
+            // or just show a message asking for confirmation
+            
+            if (IsKeyPressed(KEY_Y)) exitWindow = true;
+            else if (IsKeyPressed(KEY_N)) exitWindowRequested = false;
+        }
+        //----------------------------------------------------------------------------------
+
+        // Draw
+        //----------------------------------------------------------------------------------
+        BeginDrawing();
+
+            ClearBackground(RAYWHITE);
+
+            if (exitWindowRequested)
+            {
+                DrawRectangle(0, 100, screenWidth, 200, BLACK);
+                DrawText("Are you sure you want to exit program? [Y/N]", 40, 180, 30, WHITE);
+            }
+            else DrawText("Try to close the window to get confirmation message!", 120, 200, 20, LIGHTGRAY);
+
+        EndDrawing();
+        //----------------------------------------------------------------------------------
+    }
+
+    // De-Initialization
+    //--------------------------------------------------------------------------------------
+    CloseWindow();        // Close window and OpenGL context
+    //--------------------------------------------------------------------------------------
+
+    return 0;
+}