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Bug
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Resolution: Out of scope
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P3: Somewhat important
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4.3.0
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None
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macOS
On Mac OS X Carbon, a mask set on the top level window is not applied correctly. It seems that the position of the mask is ignored.
Here is a code to reproduce the problem, the screenshots attached show the result on Cocoa and Carbon. The visual artefact on the left of the second window on Carbon disapears after the first repaint.
//////////////////// // sample code //////////////////// #include <QtGui> #include <QtDebug> int main(int argc, char *argv[]) { QApplication app(argc, argv); /////////////// // BUG widget /////////////// QWidget* qwBug = new QWidget (0 , Qt::Window |Qt::FramelessWindowHint); //bug QPushButton* bt1 = new QPushButton(qwBug); bt1->setText("Button 1"); bt1->move(10,10); bt1->show(); QPushButton* bt2 = new QPushButton(qwBug); bt2->setText("Button 2"); bt2->move(110,10); bt2->show(); qwBug->setGeometry(100, 100, 210, 50); qwBug->showNormal(); // next line should chop the left 100 pixels qDebug() << qwBug->geometry().width()-100; qDebug() << qwBug->geometry().height(); qwBug->setMask (QRect(100, 0, qwBug->geometry().width()-100, qwBug->geometry().height())); qwBug->show(); ////////////////// // Normal Widget ////////////////// QWidget* qw = new QWidget (0 , Qt::Window ); //fine QPushButton* bt3 = new QPushButton(qw); bt3->setText("Button 3"); bt3->move(10,10); bt3->show(); QPushButton* bt4 = new QPushButton(qw); bt4->setText("Button 4"); bt4->move(110,10); bt4->show(); qw->setGeometry(100, 200, 210, 50); qw->showNormal(); // next line should chop the left 100 pixels qDebug() << qw->geometry().width()-100; qDebug() << qw->geometry().height(); qw->setMask (QRect(100, 0, qw->geometry().width()-100, qw->geometry().height())); qw->show(); return app.exec(); }