I worked around this by creating and showing a dummy window of zero size before
creating and showing the splashscreen.
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
// Create a dummy window so that we get keypresses on OSX
QLabel v(0, Qt::FramelessWindowHint);
v.setMinimumSize(QSize(0, 0));
v.move(0,0);
v.show();
Splash *splash = new Splash;
splash->setPixmap(QPixmap(":/images/splash_loading.png"));
splash->show();
splash->grabKeyboard();
// keypresses are now captured here
delay(5.f);
v.hide();
MainWindow w;
w.show();
...
On 15/05/14 10:20, Glenn Ramsey wrote:
> Hi,
>
> I am trying to get keypresses from QSplashScreen before my main window opens.
> My
> splash class inherits from QSplashScreen and overrides the keyPressEvent
> method.
>
> The code below works on Windows but on OSX the keypresses are not intercepted
> until the main window opens.
>
> Is there a workaround for this?
>
> Glenn
>
> splash.cpp:
>
> ...
>
> void Splash::keyPressEvent(QKeyEvent *evt)
> {
> std::cout << evt->text().toStdString() << std::endl;
> }
>
> main.cpp:
>
> ...
>
> void delay(float seconds)
> {
> QTime dieTime= QTime::currentTime().addSecs(seconds);
> while( QTime::currentTime() < dieTime )
> QCoreApplication::processEvents(QEventLoop::AllEvents, 100);
> }
>
> int main(int argc, char *argv[])
> {
> QApplication a(argc, argv);
>
> Splash *splash = new Splash;
> splash->setPixmap(QPixmap(":/images/splash_loading.png"));
> splash->show();
> splash->grabKeyboard();
>
> // on OSX no keypresses captured here, on Windows keypresses captured
> delay(5.f);
>
> MainWindow w;
> w.show();
>
> // keypresses captured here on OSX and Windows
> delay(5.f);
>
> splash->releaseKeyboard();
> splash ->hide();
>
> return a.exec();
> }
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