QMainWindow windows always on top not working sometimes

Giorgi

On windows 7 I have problem with window flag. I added this line in the constructor

setWindowFlags(Qt::WindowStaysOnTopHint );

when windows is going to render (after ctrl + r in qt creator) if suddenly i click on somewhere on text editor(qt creator text editor or in notepad if is open) this flag is not working correctly and rendered window stays on background. I found windows this solution:

if(GetForegroundWindow() != reinterpret_cast<HWND>(winId())){
   qDebug() << "Here is my problem";
}

but now If I set again it doesn't working and window anyway stays background.

setWindowFlags(Qt::WindowStaysOnTopHint );

Can someone help me?

mrjj

@Giorgi said:

setWindowFlags(Qt::WindowStaysOnTopHint );

Works here on win 7, when set on the mainwindow. never falls behind anything.

Have you tried with a new project and only
setWindowFlags(Qt::WindowStaysOnTopHint );
in constructor ?

also ctrl +r is run app with no debug. Guess you can call it render :)

Connie

Hi,

Have you found the solution to your problem? I am also having the same problem and am still cracking my head to solve this. If anyone has the solution, please post it here.

kshegunov

@Connie
Hello,
Where are you setting the hint? Is it in the constructor? It has always worked for me, but there maybe some subtlety in your code.

Devopia53

@Giorgi

MSDN said: To use SetWindowPos to bring a window to the top, the process that owns the window must have SetForegroundWindow permission.

eg.

#include <Windows.h>

SetForegroundWindow((HWND)winId());
setWindowFlags(Qt::WindowStaysOnTopHint);

// in .pro
win32-g++:LIBS += libUser32
win32-msvc*:LIBS += User32.lib