- Hide the cursor by overriding WM_SETCURSOR, as seen in the IDirect3DDEvice9::ShowCursor()

example. Do not modify the window class pointer. I still had an instance where I was left with
  an invisible pointer no matter where I moved it, so hopefully this takes care of that. (edit:
  it doesn't.)

SVN r2496 (trunk)

src/win32/i_input.cpp

@@ -147,6 +147,7 @@ EXTERN_CVAR (Bool, lookstrafe)
 EXTERN_CVAR (Bool, use_joystick)
 
 static int WheelDelta;
+extern bool CursorState;
 
 extern BOOL paused;
 static bool noidle = false;
@@ -418,6 +419,14 @@ LRESULT CALLBACK WndProc (HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
 		I_CheckNativeMouse (false);
 		break;
 
+	case WM_SETCURSOR:
+		if (!CursorState)
+		{
+			SetCursor(NULL); // turn off window cursor
+			return TRUE;	// Prevent Windows from setting cursor to window class cursor
+		}
+		break;
+
 	case WM_SIZE:
 		InvalidateRect (Window, NULL, FALSE);
 		break;