Change QWizard buttons size

Question

I am trying to do something that looks easy, but I cannot make it working. I want to make buttons bigger in my QWizard. Here is the code :

#include "wizard.h"
#include "ui_wizard.h"
#include "QAbstractButton"
Wizard::Wizard(QWidget *parent) :
    QWizard(parent),
    ui(new Ui::Wizard)
{
    ui->setupUi(this);
    QRect rect = this->button(QWizard::NextButton)->geometry();
    this->button(QWizard::NextButton)->setGeometry(rect.x(), rect.y(), rect.width(), 40);

    rect = this->button(QWizard::CancelButton)->geometry();
    this->button(QWizard::CancelButton)->setGeometry(rect.x(), rect.y(), rect.width(), 40);

    rect = this->button(QWizard::BackButton)->geometry();
    this->button(QWizard::BackButton)->setGeometry(rect.x(), rect.y(), rect.width(), 40);

}

Wizard::~Wizard()
{
    delete ui;
}

This code does nothing. Is it possible to change the geometry of the buttons? Or it is forbidden?

Thank you

Answer 1

Better is to customize user interface using QSS (Qt Style Sheet). You can read your qss file and setup stylesheet for the whole application using QApplication::setStyleSheet().

Also you can setup qss programmatically (not the best practics).

setStyleSheet("QAbstractButton { height: 50px }");

What sets height for all buttons on the widget.

In the worst case you can try this:

button(QWizard::CancelButton)->setStyleSheet("height: 50px");