QButtonGroup setExclusive（）问题

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.