// delegate Windows GUI messsage
func delegateProc(hWnd win.HWND, message uint, wParam uintptr, lParam uintptr, pParam uintptr, pHandled *int) int {
switch message {
case win.WM_DESTROY:
log.Println("closing window ...")
win.PostQuitMessage(0)
*pHandled = 1
}
return 0
}
func (app *Application) Exit(exitCode int) {
app.exiting = true
app.exitCode = exitCode
win.PostQuitMessage(int32(exitCode))
}