Disable Close button (X) of a QDialog

Quote:

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Originally Posted by BrainB0ne

That's very nice to hear/know when i'm going to use Qt 4.5 or higher in the future! :)

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Very nice, thanks, but, is it possible to disable (X) in dialog that resided on QGraphicsView, I've read in the docs that is NOT possible ...

I use the same code in QT4.5, but it doesn't work!!
why??

Quote:

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Originally Posted by blue.death

Anybody knows how to disable that nasty little button on X11 and Mac OS X??

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I have the exact same problem. I'm using Qt 4.3 and don't have the luxury of Qt::WindowMinMaxButtonHint. :(

I need to keep the title bar empty, so Qt::FramelessWindowHint makes the message box a bit bare.

It was suggested that we can inherit a QDialog box and disable it there...would anyone else know of any other suggestions?

Thanks,
Kat

Quote:

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Originally Posted by kyue

It was suggested that we can inherit a QDialog box and disable it there...would anyone else know of any other suggestions?

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try upgrading to qt 4.5

Try this

Code:

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#include <qapplication.h>
#include <qevent.h>
#include <qpushbutton.h>
#include <qdialog.h>
#include <qmessagebox.h>
#include <iostream>
 
class MyDialog : public QDialog
{
public:
 
  MyDialog( QWidget* parent=0 ) : QDialog( parent ) {
  }
 
protected:
 
  void closeEvent ( QCloseEvent * event ) {
    event->ignore();
    QMessageBox::information( this, "Close?", "Close? No way!" );
  }
};
 
int main( int argc, char** argv )
{
  QApplication app( argc, argv );
 
  MyDialog dlg;
  QPushButton* button = new QPushButton( "Exit", &dlg );
  QObject::connect( button, SIGNAL( clicked() ),
                    &app, SLOT( quit() ) );
  dlg.resize( 300, 300 );
  dlg.show();
 
  return app.exec();
 
}

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Quote:

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Originally Posted by shad

try upgrading to qt 4.5

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Sorry, I didn't see these replies until now. It's not an option for us right now.

Quote:

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Originally Posted by lni

Try this

Code:

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#include <qapplication.h>
#include <qevent.h>
#include <qpushbutton.h>
#include <qdialog.h>
#include <qmessagebox.h>
#include <iostream>
 
class MyDialog : public QDialog
{
public:
 
  MyDialog( QWidget* parent=0 ) : QDialog( parent ) {
  }
 
protected:
 
  void closeEvent ( QCloseEvent * event ) {
    event->ignore();
    QMessageBox::information( this, "Close?", "Close? No way!" );
  }
};
 
int main( int argc, char** argv )
{
  QApplication app( argc, argv );
 
  MyDialog dlg;
  QPushButton* button = new QPushButton( "Exit", &dlg );
  QObject::connect( button, SIGNAL( clicked() ),
                    &app, SLOT( quit() ) );
  dlg.resize( 300, 300 );
  dlg.show();
 
  return app.exec();
 
}

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Thank you for your reply. Yes, this was a solution that was considered. I'm wondering if there is another solution where we don't have to inherit and ignore the closeEvent...

If this helps anyone, you can remove the three buttons on the top left (close, minimize, maximize) on a Mac and leaving the title there using:

Code:

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setWindowModality(Qt::WindowModal);

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try Window flags
see the example: http://doc.trolltech.com/4.3/widgets-windowflags.html

hi

this did the job for me (on a QDialog based class) :

Code:

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Qt::WindowFlags flags = windowFlags() ;
flags |= Qt::CustomizeWindowHint ;
flags &= ~Qt::WindowCloseButtonHint ;
setWindowFlags( flags ) ;

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