Resizing the dialog box dynamically

[vvbkumar]

hi ,

I am new to QT.., my problem is can we resize the dialog dynamically,

i.e, using any controls, Say for eg slider, can we resize the dialog when the slider is moved

thanks in advance

[wysota]

Yes, of course. You have to connect the slider's valueChanged signal to a custom slot which will resize() the dialog.

[vvbkumar]

hi
i have tried using resize(), but its not effecting on the dialog box???

can u pl help me out.

thanks in advance,

[wysota]

Can you show some code you wrote for that?

[vvbkumar]

here is the code :

int main (int argc, char *argv[]){
  QApplication app(argc, argv);
  QDialog *dialog  = new QDialog();
  QHBox *hbox = new QHBox;
  hbox->setCaption("Slider is at : ");
  hbox->setMargin(6);
  hbox->setSpacing(6);
  QSpinBox *spinbox = new QSpinBox(hbox);
  QSlider *slider = new QSlider(Qt::Horizontal, hbox);
  spinbox->setRange(0,100);
  slider->setRange(0,100);
  QObject::connect(spinbox, SIGNAL(valueChanged(int)),  slider, SLOT(setValue(int)));
  QObject::connect(slider, SIGNAL(valueChanged(int)),  spinbox, SLOT(setValue(int)));
  int x = spinbox->value();
  int y = slider->value();
  hbox->resize(x,y);
  spinbox->setValue(11);
  app.setMainWidget(hbox);
  hbox->show();
  return app.exec();
}

int main (int argc, char *argv[]){
  QApplication app(argc, argv);
  QDialog *dialog  = new QDialog();
  QHBox *hbox = new QHBox;
  hbox->setCaption("Slider is at : ");
  hbox->setMargin(6);
  hbox->setSpacing(6);
  QSpinBox *spinbox = new QSpinBox(hbox);
  QSlider *slider = new QSlider(Qt::Horizontal, hbox);
  spinbox->setRange(0,100);
  slider->setRange(0,100);
  QObject::connect(spinbox, SIGNAL(valueChanged(int)),  slider, SLOT(setValue(int)));
  QObject::connect(slider, SIGNAL(valueChanged(int)),  spinbox, SLOT(setValue(int)));
  int x = spinbox->value();
  int y = slider->value();
  hbox->resize(x,y);
  spinbox->setValue(11);
  app.setMainWidget(hbox);
  hbox->show();
  return app.exec();
}

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[e8johan]

This only resizes the dialog to the initial state (i.e. 0 by 0 pixels). You've also interconnected the slider and the spin box. You need to subclass the dialog and create two slots - setX and setY which you then connect to the slider and spinbox.