QButtonGroup setExclusive() issue

Question

I'm trying to group a few QPushButton`s into QButtonGroup with exclusive checking, but after launch i'm still able to check multiple buttons.

// pen toggle button
penB.setSizePolicy(QSizePolicy::Minimum, QSizePolicy::Minimum);
penB.setIconSize(QSize(ICON_SIZE,ICON_SIZE));
penB.setCheckable(true);
penB.toggle();
penB.setIcon(QIcon(":icons/pen.png"));
// circle toggle button
circleB.setSizePolicy(QSizePolicy::Minimum, QSizePolicy::Minimum);
circleB.setIconSize(QSize(ICON_SIZE,ICON_SIZE));
circleB.setCheckable(true);
circleB.setIcon(QIcon(":icons/circle.png"));

figureBox.addButton(&penB);
figureBox.addButton(&circleB);
figureBox.setExclusive(true);
// add buttons to grid
layoutG.addWidget(&openB,1,1);
layoutG.addWidget(&saveB,1,2);
layoutG.addWidget(&penB,1,3);
layoutG.addWidget(&circleB,2,3);

I think, its just need to procees some events. If its true, which events exactly? Thanks in advance.

Answer 1

I've tried to replicate your example and for me it works OK:

widget.h:

#ifndef WIDGET_H
#define WIDGET_H

#include <QWidget>
#include <QPushButton>
#include <QButtonGroup>
#include <QGridLayout>

class Widget : public QWidget
{
    Q_OBJECT

public:
    explicit Widget(QWidget *parent = 0);
    ~Widget();

private:
    QGridLayout layoutG;
    QButtonGroup figureBox;
    QPushButton openB;
    QPushButton saveB;
    QPushButton penB;
    QPushButton circleB;
};

#endif // WIDGET_H

widget.cpp:

#include "widget.h"


Widget::Widget(QWidget *parent) :
    QWidget(parent)
{
    // pen toggle button
    penB.setSizePolicy(QSizePolicy::Minimum, QSizePolicy::Minimum);
    penB.setIconSize(QSize(16, 16));
    penB.setCheckable(true);
    penB.toggle();

    // circle toggle button
    circleB.setSizePolicy(QSizePolicy::Minimum, QSizePolicy::Minimum);
    circleB.setIconSize(QSize(16, 16));
    circleB.setCheckable(true);

    figureBox.addButton(&penB);
    figureBox.addButton(&circleB);
    figureBox.setExclusive(true);

    // add buttons to grid
    layoutG.addWidget(&openB,1,1);
    layoutG.addWidget(&saveB,1,2);
    layoutG.addWidget(&penB,1,3);
    layoutG.addWidget(&circleB,2,3);

    setLayout(&layoutG);
}

Widget::~Widget()
{
}

The single thing that could be not ok in your code is that I don't see where you set the layout, but maybe you didn't add the code for simplicity reasons. Another thing is that the only excluding buttons would be penB and circleB.

Check my example, see what you're doing wrong and maybe come back with a feedback.

Answer 2

Sorry, guys. Its time to go to the bed. Im forgot to declare QButtonGroup in .h file, it was declared at the local function, so just memory leak.