setWindowState(Qt::WindowFullScreen) is unter the taskbar

[Andy314]

Hello, I have really big problem with the newer Qt Version im MS-Windows.
In Qt 5.5 (and maybe in somer higher versions)

Qt::WindowFullScreen

produces a Window over the taskbar.

In the last Qt versions the window gets full screen size but the lower part will be hidden of the taskbar.
I had hinted in an other thread on this problem before. The solution was at that time:

->setWindowFlags(BaseForm->windowFlags() |   Qt::WindowStaysOnTopHint);

I was happy about the solution, but I detected a lot of problem with this hack.

1. Every QMessageBox is always invisible because it behind every window. (This problem I solved with a custom MessageBox.)

2. Main problem is, that I cannot bring the Windows.Camera on top.
   Its opens, but it like the messagebox under the window.
   My app needs the camera function absolutely.

Has anybody a solution for this problem ?

Best regards
Andreas Weichert

[Andy314]

I found the solution for myself.

BaseForm->setWindowState(BaseForm->windowState() ^
                          Qt::WindowFullScreen
                 ^ Qt::WindowMaximized

The Qt::WindowMaximized flag is important.