Details
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Bug
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Resolution: Unresolved
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P3: Somewhat important
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None
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6.2.9, 6.4.3, 6.6.0 Beta4
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None
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Windows 11 Version 22H2 [winnt version 10.0.22621]
dual monitor setup (see qtdiag.log)
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Windows
Description
Showing a window with a 'too big' size on a second monitor (where top-left virtual coordinates are not 0,0) leads to the window not being shown at all, as it is rendered with 'off-screen' coordinates. This is both for Qt Widgets and Qt Quick, and seems to affect all Qt 6 versions.
Example code (probably only reproducible on a setup very similar to mine):
#include <QApplication> #include <QWidget> #include <QScreen> #include <QWindow> int main(int argc, char *argv[]) { QApplication a(argc, argv); QWidget w; for(auto screen: a.screens()) qDebug() << "Screen" << screen->name() << "available size: " << screen->availableSize(); //w.resize(1705, 915); w.resize(1706, 916); w.show(); QWindow *window = w.windowHandle(); qDebug() << "Window size: " << window->size() << "position" << window->position() << "on screen" << window->screen()->name(); return a.exec(); }
Output:
Screen "\\\\.\\DISPLAY1" available size: QSize(1920, 1032) Screen "DELL P2415Q" available size: QSize(1920, 1032) Window size: QSize(1706, 916) position QPoint(-1920,0) on screen "\\\\.\\DISPLAY1"
Anyhow, the window is not shown on screen 1 - it isn't shown at all, in fact, because of the -1920 coordinate.
With w.resize(1705, 915), it is shown on the right screen:
Screen "\\\\.\\DISPLAY1" available size: QSize(1920, 1032) Screen "DELL P2415Q" available size: QSize(1920, 1032) Window size: QSize(1705, 915) position QPoint(3947,58) on screen "DELL P2415Q"
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