QT QPushButton实例详解1——基础设置

待我称王封你为后i 2022-10-11 01:17 466阅读 0赞

//设置按钮文本
    ui.pushButton->setText("My Button");

![20210629220545433.png][]

//设置鼠标在按钮上方悬停时的提示文字
    ui.pushButton->setToolTip("Look at me")

![20210629220943240.png][]

//设置按钮背景颜色
    ui.pushButton->setStyleSheet("background-color: red;");

![20210629221032883.png][]

//设置按钮文本颜色
    ui.pushButton->setStyleSheet("color: white;");

![20210629221127168.png][]

//设置按钮背景图片-如果图片尺寸比按钮大，那么图片会显示不全
    ui.pushButton->setStyleSheet("background-image: url(:/StyleSheet/background.jpg);");

![20210629225757219.png][]

//设置按钮背景图片-如果图片尺寸比按钮大，那么图片会自动缩小并填满整个按钮
    ui.pushButton->setStyleSheet("border-image: url(:/StyleSheet/background.jpg);");

![20210629225829461.png][]

/*
        设置按钮边框：厚度为5px，线条为实线，颜色为蓝色
        border-radius是设置按钮为圆角时用的，设置后按钮四个角会由90度的直角变成一条弧线，数值越大，弧线越宽
    */
    ui.pushButton->setStyleSheet("border:1px solid blue; border-radius: 15px;");

![20210629230034710.png][]

//给按钮添加菜单
    QMenu *myMenu = new QMenu;
    myMenu->addMenu("Open");
    myMenu->addMenu("Close");
    ui.pushButton->setMenu(myMenu); 
    ui.pushButton->showMenu();

![20210629230148917.png][]

//头文件MyButton.h 
    class MyButton : public QMainWindow
    {
        Q_OBJECT
    
    public:
        MyButton(QWidget *parent = Q_NULLPTR);
    
    public slots:
        //响应按钮点击事件
        void OnBtnClicked();
    
    private:
        Ui::MyButtonClass ui;
    };
    
    
    //源文件MyButton.cpp
    MyButton::MyButton(QWidget *parent)
        : QMainWindow(parent)
    {
        ui.setupUi(this);
    
        //响应按钮点击事件
        connect(ui.pushButton,SIGNAL(clicked()),this,SLOT(OnBtnClicked()));
    }
    
    void MyButton::OnBtnClicked()
    {
        OutputDebugString(L"OnBtnClicked");
    }

//设置按钮默认状态下的背景颜色为绿色，鼠标悬停时背景颜色为蓝色，鼠标按下时颜色为红色
    ui.pushButton->setStyleSheet(
    "QPushButton{background-color: green;color:rgb(255, 255, 255);}"
    "QPushButton:hover{background-color: blue;color:rgb(255, 255, 255);}"
    "QPushButton:pressed{background-color:red;}");

![20210629233003126.png][]

![2021062923303995.png][]

![20210629233159872.png][]

[https://blog.csdn.net/u012803067/article/details/77368381][https_blog.csdn.net_u012803067_article_details_77368381]

[https://blog.csdn.net/naibozhuan3744/article/details/80913651][https_blog.csdn.net_naibozhuan3744_article_details_80913651]

[20210629220545433.png]: /images/20221005/1d415cb970234464a3ea74439f05577c.png
[20210629220943240.png]: /images/20221005/56cdb2e0bc6e4eb89c197f9143a48862.png
[20210629221032883.png]: /images/20221005/7a22e408c4084fa18f47c38a7e794795.png
[20210629221127168.png]: /images/20221005/795da8d296434ba68761f7b271b9b443.png
[20210629225757219.png]: /images/20221005/9757dab80f7249a9883eb792c3898587.png
[20210629225829461.png]: /images/20221005/3f6b74b099e440f8af178b6393ae68d6.png
[20210629230034710.png]: /images/20221005/5a99df3188f24e7a8f35d45a9b0908e1.png
[20210629230148917.png]: /images/20221005/013736dcf71e4a65bbbd497da71adf44.png
[20210629233003126.png]: /images/20221005/e0c48605c1ed41e8a21b98a00c933e68.png
[2021062923303995.png]: /images/20221005/169100723e2e47b48f9e55d31581bd60.png
[20210629233159872.png]: /images/20221005/3bb57ef487bf408691c6f45b3295e5c8.png
[https_blog.csdn.net_u012803067_article_details_77368381]: https://blog.csdn.net/u012803067/article/details/77368381
[https_blog.csdn.net_naibozhuan3744_article_details_80913651]: https://blog.csdn.net/naibozhuan3744/article/details/80913651