alt-f4 disable

[3DModelerMan]

Can I disable exiting with alt-f4 without modifying the source code? Or should I just do that and rebuild at the end of my project?

[bitplane]

You need to edit CIrrDeviceWin32.cpp and change how the WM_CLOSE event is handled.

[sudi]

http://www.gamedev.net/community/forums ... _id=315403

[JP]

Could you not swallow it in your event receiver and that would prevent it being handled anywhere else? Or does it get read before the user event receiver?

[bitplane]

The left alt key doesn't get passed to Irrlicht in windowed mode, it activates the menu instead. Same applies to the key-up event for the escape key, they're special keys used internally by Windows and have to be disabled by some command I think

[JP]

Could you swallow just the F4 key to prevent it then?

[Dragonazul]

I have similar problem with the close button of the main window.

I have modify a few the CIrrDeviceWin32.cpp:

Code: Select all

-	/*case WM_DESTROY:
-		PostQuitMessage(0);
-		return 0;*/

	case WM_SYSCOMMAND:
		// prevent screensaver or monitor powersave mode from starting
		if ((wParam & 0xFFF0) == SC_SCREENSAVE ||
			(wParam & 0xFFF0) == SC_MONITORPOWER)
			return 0;
		break;

	case WM_USER:
		event.EventType = irr::EET_USER_EVENT;
		event.UserEvent.UserData1 = (irr::s32)wParam;
		event.UserEvent.UserData2 = (irr::s32)lParam;
		dev = getDeviceFromHWnd(hWnd);

		if (dev)
			dev->postEventFromUser(event);

		return 0;
	}
+	if (message != WM_QUIT && message != WM_CLOSE  && message != WM_DESTROY){
		return DefWindowProc(hWnd, message, wParam, lParam);
+	}
+	else{
+		printf("Close Device. ¿Create new event type?\n");
+	}
	return 0;
}

this works and the window don't close with neither the close button or the alt+F4. I suppose I can create a new event type EGET_USER_CLOSE_WINDOW and then capture it in my application and close de window. But I don't know how to close my window my best is to call:: Device->closeDevice(); But it only close the window and not the console...

another problem is that device run allways return true....

any idea of how to close the application correctly???

[Dragonazul]

Hi all.

A lot of time receiving is time to contribute...
Althoug you caught the WM_QUIT, WM_DESTROY... it don't works, when you caught this event the main windows has been already close.

Is necessary to caught a WM_SYSCOMMAND with wParam = SC_CLOSE that generate the next close events (WM_CLOSE. WM_QUIT...)

I put here my solution y never close the application with Alt+F4 Or close window button.

File CIrrDeviceWin32.cpp

Code: Select all

    case WM_SYSCOMMAND:
		// prevent screensaver or monitor powersave mode from starting
		if ((wParam & 0xFFF0) == SC_SCREENSAVE ||
			(wParam & 0xFFF0) == SC_MONITORPOWER)
			return 0;
+	      //Event capture, close window
+		if((wParam & 0xF060) == SC_CLOSE){
+               //Generate new event type
+			event.EventType = irr::EET_GUI_EVENT;
+			event.GUIEvent.EventType = irr::gui::EGET_MAIN_WINDOW_CLOSED;
+			dev = getDeviceFromHWnd(hWnd);
+			if (dev)
+				dev->postEventFromUser(event);
+			return 0;
+		}
		break;
	}

	return DefWindowProc(hWnd, message, wParam, lParam);

Now the only way to close the application is caught EGET_MAIN_WINDOW_CLOSED and call to Device->closeDevice();

Code: Select all

		if (event.EventType == irr::EET_GUI_EVENT)
			if(event.GUIEvent.EventType == irr::gui::EGET_MAIN_WINDOW_CLOSED)
				Device->closeDevice();

I Hope this help

[bitplane]

Cool, thank you Dragonazul. We may eventually add device events into Irrlicht (close, resize, destroy, add/remove drive, etc) and when we do this will certainly be useful

[Dragonazul]

Thanks Bitplane. I'm happy to help.
This is a fantastic community