[mac] qcursor not updated when entering inactive window

On the mac, a window which is not the current active window does not get any cursor when the mouse is over : it gets only the basic arrow cursor, event though its current cursor is different.

Also, calling QApplication::setOverrideCursor(**a cursor** ) from an event handler of an inactive window (e.g. in enterEvent()) does nothing.

Sample code attached, and copied below.

#include <QApplication>
#include <QMainWindow>
// On the mac, qt5.6, only the currently active window gets the appropriate cursor.
// Un-activated window only display the arrow cursor.
// Note that even QApplication::setOverrideCursor(cursor()); fails displaying the correct cursor
// when entering an unactive window

class MainWindow : public QMainWindow
{
//Q_OBJECT
protected:
void enterEvent(QEvent * _e)

{ qDebug() <<"enter event"; QApplication::setOverrideCursor(cursor()); }

void leaveEvent(QEvent * _event)

{ QApplication::restoreOverrideCursor(); }

};

int main(int argc, char *argv[])

{ QApplication app(argc, argv); QMainWindow mainWin1; mainWin1.setWindowTitle("win1"); MainWindow mainWin2; mainWin2.setWindowTitle("win2"); mainWin1.setCursor(Qt::SizeAllCursor); mainWin1.setWindowTitle("win1"); mainWin2.setCursor(Qt::OpenHandCursor); mainWin1.show(); mainWin2.show(); mainWin1.activateWindow(); return app.exec(); }