setup ui doesnt work or any of my mistake??

[Zlatomir]

And are there any errors? If yes are they at compile, or at run-time.
Qt Creator display any warnings about the signal/slot in Application output?
How exactly is not working?

LE: the problem is that you don't show the Settings dialog, here:

void MainWindow::execShowSettings()
{
 
SettingsDialog dialog;   //you just create the object...
 
//you need to call exec() for a modal dialog
dialog.exec();
 
//or show() for non-modal, but for non-modal you need to create the object on the heap (using pointer and new)
}

void MainWindow::execShowSettings()
{

SettingsDialog dialog;   //you just create the object...

//you need to call exec() for a modal dialog
dialog.exec();

//or show() for non-modal, but for non-modal you need to create the object on the heap (using pointer and new)
}

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