Added function SetWindowIcon()

Only DESKTOP platforms (Windows, Linus, OSX)

src/core.c

@@ -524,7 +524,7 @@ bool IsWindowMinimized(void)
 #endif
 }
 
-// Fullscreen toggle
+// Fullscreen toggle (only PLATFORM_DESKTOP)
 void ToggleFullscreen(void)
 {
 #if defined(PLATFORM_DESKTOP)
@@ -540,6 +540,25 @@ void ToggleFullscreen(void)
 #endif
 }
 
+// Set icon for window (only PLATFORM_DESKTOP)
+void SetWindowIcon(Image image)
+{
+#if defined(PLATFORM_DESKTOP)
+    ImageFormat(&image, UNCOMPRESSED_R8G8B8A8);
+
+    GLFWimage icon[1];
+    
+    icon[0].width = image.width;
+    icon[0].height = image.height;
+    icon[0].pixels = (unsigned char *)image.data;
+
+    // NOTE: We only support one image icon
+    glfwSetWindowIcon(window, 1, icon);
+
+    // TODO: Support multi-image icons --> image.mipmaps
+#endif
+}
+
 // Get current screen width
 int GetScreenWidth(void)
 {

src/raylib.h

@@ -638,6 +638,7 @@ RLAPI void CloseWindow(void);                                     // Close Windo
 RLAPI bool WindowShouldClose(void);                               // Detect if KEY_ESCAPE pressed or Close icon pressed
 RLAPI bool IsWindowMinimized(void);                               // Detect if window has been minimized (or lost focus)
 RLAPI void ToggleFullscreen(void);                                // Fullscreen toggle (only PLATFORM_DESKTOP)
+RLAPI void SetWindowIcon(Image image);                            // Set icon for window (only PLATFORM_DESKTOP)
 RLAPI int GetScreenWidth(void);                                   // Get current screen width
 RLAPI int GetScreenHeight(void);                                  // Get current screen height