QWidget across the desktop space in macos?

Zuoyu Xie

In macos, how can qwidget across the desktop space when I switch workspace?

stryga42

I do not understand your question or issue. Could you please re-phrase or explain in more detail?

Zuoyu Xie

@stryga42 Thank you for your reply, what I want to do is on the Mac system, when I switch the desktop space, let the window switch with it and display it on the top layer forever. What I did try is as follows:

// in .mm file, My own widget is subclass of QWidget
    NSPanel *window = [[NSPanel alloc] initWithContentRect:NSMakeRect(0, 0, size.width(), size.height()) styleMask:NSWindowStyleMaskFullSizeContentView | NSWindowStyleMaskBorderless | NSWindowStyleMaskNonactivatingPanel backing:NSBackingStoreBuffered defer:YES];

    [window setHasShadow:false];
    [window setHidesOnDeactivate:false];
    [window setBackgroundColor:NSColor.clearColor];
    [window setTitlebarAppearsTransparent:true];
    [window setTitleVisibility:NSWindowTitleHidden];
    [window setFloatingPanel:true];
    [window setLevel:NSScreenSaverWindowLevel - zPosition];
    [window setCollectionBehavior:NSWindowCollectionBehaviorCanJoinAllSpaces | NSWindowCollectionBehaviorFullScreenAuxiliary];

    NSView *nativeWidgetView = (NSView*)(this->winId());
    window.contentView = nativeWidgetView;

This approach achieved my purpose, but it also caused a series of event distribution problems, such as not receiving QEvent::Enter...I don't know what to do and if there is any other way to do it?