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framelesshelper
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win32: add more comments 

Signed-off-by: Yuhang Zhao <2546789017@qq.com>
This commit is contained in:
Yuhang Zhao 2022-03-10 18:07:35 +08:00
parent bbd20b6476
commit affba58e25
1 changed files with 13 additions and 2 deletions
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15
framelesswindowsmanager.cpp
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@ -47,6 +47,10 @@ void FramelessWindowsManager::addWindow(QWindow *window)
if (!window) {
return;
}
// If you encounter with any issues when do the painting through OpenGL,
// just comment out the following two lines, they are here to workaround
// some strange Windows bugs but to be honest they don't have much to do
// with our custom window frame handling.
if (!QCoreApplication::testAttribute(Qt::AA_DontCreateNativeWidgetSiblings)) {
QCoreApplication::setAttribute(Qt::AA_DontCreateNativeWidgetSiblings);
}
@ -54,10 +58,17 @@ void FramelessWindowsManager::addWindow(QWindow *window)
framelessHelperUnix()->removeWindowFrame(window);
#else
FramelessHelperWin::addFramelessWindow(window);
// Work-around a Win32 multi-monitor bug.
QObject::connect(window, &QWindow::screenChanged, [window](QScreen *screen){
// Work-around Win32 multi-monitor artifacts.
QObject::connect(window, &QWindow::screenChanged, window, [window](QScreen *screen){
Q_UNUSED(screen);
// For some reason the window is not repainted correctly when moving cross monitors,
// we workaround this issue by force a re-paint and re-layout of the window by triggering
// a resize event manually. Although the actual size does not change, the issue we
// observed disappeared indeed, amazingly.
window->resize(window->size());
// Force a WM_NCCALCSIZE event to inform Windows about our custom window frame,
// this is only necessary when the window is being moved cross monitors.
Utilities::triggerFrameChange(window->winId());
});
#endif
}