当焦点集中在QToolButton时如何调整QToolButton的大小 [英] How to resize the QToolButton when focus is coming on that QToolButton

问题描述

当焦点集中在 QToolButton 上时，如何调整 QToolButton 的大小.我有5个 QToolButton ，当焦点放在第二个 QToolButton 上时，其大小应自动增加.怎么做?

How to resize the QToolButton when focus is coming on that QToolButton. I am having 5 QToolButton, when focus is coming on 2nd QToolButton its size should automatically increase. How to so it?

推荐答案

您将必须创建一个自定义类，将QToolButton子类化.

You will have to make a custom class , subclassing QToolButton.

class MyButton : public QToolButton
{
    Q_OBJECT 

    private:
         int originalWidth, originalHeight;
         int bigWidth, bigHeight;
};

然后重新实现focusInEvent.

And then reimplement the focusInEvent and out.

void focusInEvent ( QFocusEvent * event ) { 
                   resize(bigWidth,bigHeight); 
                   QToolButton::focusInEvent(event); // Don't forget to call parent focus in / out in order to make the "hover" effect work. 
}

void focusOutEvent ( QFocusEvent * event ) { 
                   resize(originalWidth,originalHeight); 
                   QToolButton::focusOutEvent(event);
}

干杯.

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