同様の解決策を探している人のためにここに追加するだけです
https://qt-project.org/wiki/PushButton_Based_On_Action
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#ifndef ACTIONBUTTON_H
#define ACTIONBUTTON_H
#include <QPushButton>
#include <QAction>
/*!
*\brief An extension of a QPushButton that supports QAction.
* This class represents a QPushButton extension that can be
* connected to an action and that configures itself depending
* on the status of the action.
* When the action changes its state, the button reflects
* such changes, and when the button is clicked the action
* is triggered.
*/
class ActionButton : public QPushButton
{
Q_OBJECT
private:
/*!
* The action associated to this button.
*/
QAction* actionOwner;
public:
/*!
* Default constructor.
* \param parent the widget parent of this button
*/
explicit ActionButton(QWidget *parent = 0);
/*!
* Sets the action owner of this button, that is the action
* associated to the button. The button is configured immediatly
* depending on the action status and the button and the action
* are connected together so that when the action is changed the button
* is updated and when the button is clicked the action is triggered.
* \param action the action to associate to this button
*/
void setAction( QAction* action );
signals:
public slots:
/*!
* A slot to update the button status depending on a change
* on the action status. This slot is invoked each time the action
* "changed" signal is emitted.
*/
void updateButtonStatusFromAction();
};
#endif // ACTIONBUTTON_H
クラス
#include "actionbutton.h"
ActionButton::ActionButton(QWidget *parent) :
QPushButton(parent)
{
actionOwner = NULL;
}
void ActionButton::setAction(QAction *action)
{
// if I've got already an action associated to the button
// remove all connections
if( actionOwner != NULL && actionOwner != action ){
disconnect( actionOwner,
SIGNAL(changed()),
this,
SLOT(updateButtonStatusFromAction()) );
disconnect( this,
SIGNAL(clicked()),
actionOwner,
SLOT(trigger()) );
}
// store the action
actionOwner = action;
// configure the button
updateButtonStatusFromAction();
// connect the action and the button
// so that when the action is changed the
// button is changed too!
connect( action,
SIGNAL(changed()),
this,
SLOT(updateButtonStatusFromAction()));
// connect the button to the slot that forwards the
// signal to the action
connect( this,
SIGNAL(clicked()),
actionOwner,
SLOT(trigger()) );
}
void ActionButton::updateButtonStatusFromAction()
{
setText( actionOwner->text() );
setStatusTip( actionOwner->statusTip() );
setToolTip( actionOwner->toolTip() );
setIcon( actionOwner->icon() );
setEnabled( actionOwner->isEnabled() );
setCheckable( actionOwner->isCheckable() );
setChecked( actionOwner->isChecked());
}