Change foreground window

Question

Hi,

I found that I can only setForegroundWindow() once. If I do it again it'll raise error.

I need one of my apps to stay on top and a mask (Qt Application) will be added on top of that window. The mask can actually be seen, but it does not respond to keyboard events.

I have tried SetFocus() and SetActive() neither of them worked.

Many thanks,
Christopher

Answer 1

I need one of my apps to stay on top

You can set it TopMost, like :

SetWindowPos(hWnd, HWND_TOPMOST, 0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE);  

To set windows to foreground, apps like Task Manager use :

 SwitchToThisWindow(hWnd, TRUE);