Block close dialog

[Mrdata]

I've the following problem, i want to block the user to close dialog using the 'X' icon or escape key, i know that using something like this will work

void MyMainDialog::done( int res )
{
 
	if( allowClose )
		QDialog::done(res);
}
 
 
 
void MyMainDialog::closeEvent( QCloseEvent* e )
{
 
	if( allowClose )
		e->accept();
	else
		e->ignore();
}

void MyMainDialog::done( int res )
{

	if( allowClose )
		QDialog::done(res);
}



void MyMainDialog::closeEvent( QCloseEvent* e )
{

	if( allowClose )
		e->accept();
	else
		e->ignore();
}

To copy to clipboard, switch view to plain text mode 

Above code works fine and blocks the main dialog,
but now i created this dialog called from maindialog and i want also to block it

void MyMainDialog::text_dialog()
{
 
     text_dlg = new QDialog( this );
     dlg_layout = new QVBoxLayout( text_dlg );
     ..........
     ..........
     text_dlg->exec();
}

void MyMainDialog::text_dialog()
{

     text_dlg = new QDialog( this );
     dlg_layout = new QVBoxLayout( text_dlg );
     ..........
     ..........
     text_dlg->exec();
}

To copy to clipboard, switch view to plain text mode 

Something like connect( on_close_text_dlg, SIGNAL(clicked()), this, SLOT( block_it() ));
will be the proper way to do this? i tried, but couldn't find what will be the way to receive the event type for a on_close_text_dlg
How i block the text_dlg?

[Lykurg]

Hi,

if your code in MyMainDialog works well, just subclass QDialog aka MyNoCloseableDialog with the two modifications and use it.

text_dlg = new MyNoCloseableDialog( this );

text_dlg = new MyNoCloseableDialog( this );

To copy to clipboard, switch view to plain text mode 

Lykurg

[wysota]

Or install an event filter on all dialogs you wish blocked and reject the close event:

bool MyClass::eventFilter(QObject *o, QEvent *e){
  if(e->type()==QEvent::Close){
    e->ignore();
    return true;
  }
  return BaseClass::eventFilter(o, e);
}
 
//...
wishToBeBlocked->installEventFilter(MyClassInstance);

bool MyClass::eventFilter(QObject *o, QEvent *e){
  if(e->type()==QEvent::Close){
    e->ignore();
    return true;
  }
  return BaseClass::eventFilter(o, e);
}

//...
wishToBeBlocked->installEventFilter(MyClassInstance);

To copy to clipboard, switch view to plain text mode 

This way you can switch on and off the block by installing or removing the filter.