[Qt-interest] Hiding a QDialog?

[Scott Aron Bloom]

I have a startup/login dialog, that after the user hits OK, I would like
to hide(), showing messages onto the QSplashScreen.

 

If however, there is a problem logging in, a message box pops up, then I
show() dialog and would like to continue.

 

Here is the rub, when you hide a dialog, it sets the exit flag in the
QDialog's event loop.  So the next time the dialogs event loop cycles,
it exits out.

 

Is there anyway, to restart the event loop? 

 

Scott

 

PS. Here is code to duplicate the problem'

 

#include <QApplication>

#include <QPushButton>

#include <QMessageBox>

#include <QVBoxLayout>

#include <QLabel>

 

class Dialog : public QDialog

{

public:

      Dialog( QWidget * parent=NULL ) :

            QDialog( parent )

      {

            QLabel * label = new QLabel( "Hello World" );

            QPushButton * btn = new QPushButton( "Push Here" );

            connect( btn, SIGNAL( clicked() ), this, SLOT( accept() ) );

 

            QVBoxLayout * layout = new QVBoxLayout( this );

            layout->addWidget( label );

            layout->addWidget( btn );

      }

 

      virtual void accept()

      {

            hide(); // comment this out, and everything works

            QMessageBox::warning( this, "Error logging in", QString(
"The user credentials don't match. Please check user name and password"
) );

            show();

            return;

      }

};

 

int main( int argc, char ** argv)

{

      QApplication appl( argc, argv );

      Dialog dlg;

      int retVal = dlg.exec();

      return retVal;

}

 

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