Question

我试图让QRadioButton的大小随窗口大小而变化。我需要的是，当我调整窗口的大小变得更大（或更小）时，QRadioButton也应该调整为变大（或更小）。

我尝试使用我用于QPushButton的方法，但我发现它不起作用（检查底部的pic1和pic2）。 QRadioButton的大小保持不变。

此外，我还为setStyleSheet尝试QRadioButton，但是我点击图片无效，这不是我想要的结果（点击图片应该有效在我的情况下）。我想知道如何修改我的代码。谢谢！

以下是一些相关代码：

.h文件

QRadioButton *funcSourceOrientedButton;
QPushButton *funcLockButton;

.cpp文件

QPixmap pixmap(":/images/Function/SourceOriented.png");
QIcon ButtonIcon(pixmap);
funcSourceOrientedButton->setIcon(ButtonIcon);
funcSourceOrientedButton->setIconSize(function_oriented_button_size);
funcSourceOrientedButton->setMinimumSize(function_oriented_button_size);
funcSourceOrientedButton->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);

funcLockButton->setStyleSheet("border-image: url(:/images/Function/WLock.png);");
funcLockButton->setMinimumSize(function_button_size);
funcLockButton->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);

以下是图片：

PIC1

PIC2

Answer 1

您需要创建一个布局并将这些按钮添加到其中

mywidget.h

#ifndef MYWIDGET_H
#define MYWIDGET_H

#include <QWidget>

class QRadioButton;
class MyWidget : public QWidget
{
    Q_OBJECT

public:
    MyWidget(QWidget *parent = 0);
    ~MyWidget();

    bool eventFilter(QObject *obj, QEvent *event);

private:
    QSize __CalculateIndicatorSize(const QSize & radioBtnSize);
private:
    QRadioButton * m_radioBtn1;
    QRadioButton * m_radioBtn2;

    QString styleForButton_;
    QString styleForIndicator_;
};

#endif // MYWIDGET_H

mywidget.cpp

#include "mywidget.h"
#include <QHBoxLayout>
#include <QPushButton>
#include <QRadioButton>
#include <QEvent>
MyWidget::MyWidget(QWidget *parent)
    : QWidget(parent)
{
    styleForButton_ = "QRadioButton{border-width: 10 10 10 10; border-image: url(C:/Users/phamat/Desktop/bg.png) 10 10 10 10;}";
    styleForIndicator_ = "QRadioButton::indicator{width: %1px; height: %2px;}";

    QHBoxLayout * layout = new QHBoxLayout();
    layout->setContentsMargins(20, 20, 20, 20);
    layout->setSpacing(20);
    setLayout(layout);

    m_radioBtn1 = new QRadioButton(this);
    m_radioBtn1->setText("Radio button 1");
    m_radioBtn1->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
    m_radioBtn1->setStyleSheet(styleForButton_);
    m_radioBtn1->installEventFilter(this);
    layout->addWidget(m_radioBtn1);

    m_radioBtn2 = new QRadioButton(this);
    m_radioBtn2->setText("Radio button 2");
    m_radioBtn2->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
    m_radioBtn2->setStyleSheet(styleForButton_);
    m_radioBtn2->installEventFilter(this);
    layout->addWidget(m_radioBtn2);
}

MyWidget::~MyWidget()
{
}

bool MyWidget::eventFilter(QObject *obj, QEvent *event)
{
    if (obj == m_radioBtn1)
    {
        if (event->type() == QEvent::Resize)
        {
            QSize size = __CalculateIndicatorSize(m_radioBtn1->size());
            m_radioBtn1->setStyleSheet(styleForButton_ + styleForIndicator_.arg(size.width()).arg(size.height()));
        }
    }
    else if (obj == m_radioBtn2)
    {
        if (event->type() == QEvent::Resize)
        {
            QSize size = __CalculateIndicatorSize(m_radioBtn2->size());
            m_radioBtn2->setStyleSheet(styleForButton_ + styleForIndicator_.arg(size.width()).arg(size.height()));
        }
    }
    return QWidget::eventFilter(obj, event);
}


QSize MyWidget::__CalculateIndicatorSize(const QSize & radioBtnSize)
{
    if (radioBtnSize.width() > 300)
    {
        return QSize(20, 20);
    }
    else if (radioBtnSize.width() > 200)
    {
        return QSize(15, 15);
    }
    else
    {
        return QSize(10, 10);
    }
}

pic 1

pic 2

Qt - 如何在窗口大小改变时改变QRadiobutton的大小

1 个答案: