menuBar() Problem

[aamer4yu]

Dont know why your application is crashing.. I tried the menu with QMenuBar pointer too... and its still working fine for me...
also from source code, menuBar creates a menubar if it doesnt exist..

QMenuBar *QMainWindow::menuBar() const
{
    QMenuBar *menuBar = qobject_cast<QMenuBar *>(d_func()->layout->menuBar());
    if (!menuBar) {
	QMainWindow *self = const_cast<QMainWindow *>(this);
	menuBar = new QMenuBar(self);
	self->setMenuBar(menuBar);
    }
    return menuBar;
}

QMenuBar *QMainWindow::menuBar() const
{
    QMenuBar *menuBar = qobject_cast<QMenuBar *>(d_func()->layout->menuBar());
    if (!menuBar) {
	QMainWindow *self = const_cast<QMainWindow *>(this);
	menuBar = new QMenuBar(self);
	self->setMenuBar(menuBar);
    }
    return menuBar;
}

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I suggest one thing... catch the closEvent for your window... and trace back as to what caused it... it will give an idea why ur program is crashing...

by the way, by your crash, I guess it means ur application closes without any error ?? right ?

[gri]

What about building your application and Qt in debug mode and stepping through?
(hope thats not too difficult for you)

[Cutey]

I suggest one thing... catch the closEvent for your window... and trace back as to what caused it... it will give an idea why ur program is crashing...

by the way, by your crash, I guess it means ur application closes without any error ?? right ?

Hi Gri,

What about building your application and Qt in debug mode and stepping through?

What do you mean ? I couldnt understand ..?

Hi Aamer4yu,

My application constructs under Qt 3.3.4 on Windows XP.
While trace I got the following error.
"Unhandled exception in xxxxxx.exe: Access Violation" ://QMenuBar* mnu = menuBar(); is raising this error. menuBar() returns NULL value. How to handle that case.?

It became hectic to me.. Please help me..

[aamer4yu]

I am not famliar with Qt 3...

neways I have few doubts...
1) where are you calling setMainMenu() function ??
2) what is mainwindow derived from ?
3) are u trying to enable / disable menu from setMainMenu function, or are u tryung to create a menu ??

rest i agree with gri.... u should step thru ur code...
ie. moving line by line in ur code, while debugging it...

also can u post a minimal example showing the problem u r facing ?