Qt中QToolButton分析

作者：爱喝兽奶帝天荒 | 2024-08-11 00:47:45

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qtoolbutton

QToolButton 类为命令或选项提供了一个快速访问按钮，通常在 QToolBar 中使用。
工具按钮是一种特殊按钮，可提供对特定命令或选项的快速访问。与普通命令按钮相反，工具按钮通常不显示文本标签，而是显示图标。

按钮的外观和尺寸可通过 setToolButtonStyle() 和 setIconSize() 进行调整。工具按钮可以在弹出菜单中提供其他选项。可以使用 setMenu() 设置弹出菜单。使用 setPopupMode() 配置可用于带有菜单集的工具按钮的不同模式。默认模式是 DelayedPopupMode，有时与 Web 浏览器中的“后退”按钮一起使用。按住按钮一段时间后，会弹出一个菜单，显示要跳转到的可能页面列表。超时取决于样式，请参阅 QStyle::SH_ToolButton_PopupDelay。

Qt::ToolButtonStyle toolButtonStyle() const
此属性保存工具按钮是仅显示图标、仅显示文本还是在图标旁边/下方显示文本。
默认值为 Qt::ToolButtonIconOnly。
要使工具按钮的样式遵循系统设置，请将此属性设置为 Qt::ToolButtonFollowStyle。在 Unix 上，将使用桌面环境中的用户设置。在其他平台上，Qt::ToolButtonFollowStyle 仅表示图标。

void setIconSize(const QSize &size)
此属性保存用于此按钮的图标大小。
默认大小由 GUI 样式定义。这是图标的最大尺寸。较小的图标不会放大。

void setArrowType(Qt::ArrowType type)
此属性保存按钮是否显示箭头而不是普通图标。这将显示一个箭头作为 QToolButton 的图标。默认情况下，此属性设置为 Qt::NoArrow。

运行效果图：


    QVBoxLayout* vLayout = new QVBoxLayout();
    QHBoxLayout* hLayout = new QHBoxLayout();
    
    m_upButton = new QToolButton();
    m_doButton = new QToolButton();
    m_lfButton = new QToolButton();
    m_rgButton = new QToolButton();
    
    //By default, this property is set to Qt::NoArrow.
    m_upButton->setArrowType(Qt::UpArrow);
    //The default is Qt::ToolButtonIconOnly.
    m_upButton->setToolButtonStyle(Qt::ToolButtonTextUnderIcon);
    m_upButton->setIconSize(QSize(48, 48));
    m_upButton->setText(QString::fromLocal8Bit("塔塔"));
    m_upButton->setStyleSheet("QToolButton{border: none; background: rgb(68, 69, 73); color: rgb(0, 160, 230);}");
    
    m_doButton->setArrowType(Qt::DownArrow);
    m_doButton->setToolButtonStyle(Qt::ToolButtonTextUnderIcon);
    m_doButton->setIconSize(QSize(48, 48));
    m_doButton->setText(QString::fromLocal8Bit("塔塔"));
    m_doButton->setStyleSheet("QToolButton{border: none; background: rgb(68, 69, 73); color: rgb(0, 160, 230);}");
    
    m_lfButton->setArrowType(Qt::LeftArrow);
    m_lfButton->setToolButtonStyle(Qt::ToolButtonTextUnderIcon);
    m_lfButton->setText(QString::fromLocal8Bit("塔塔"));
    m_lfButton->setIconSize(QSize(48, 48));
    m_lfButton->setStyleSheet("QToolButton{border: none; background: rgb(68, 69, 73); color: rgb(0, 160, 230);}");
    
    m_rgButton->setArrowType(Qt::RightArrow);
    m_rgButton->setToolButtonStyle(Qt::ToolButtonTextUnderIcon);
    m_rgButton->setIconSize(QSize(48, 48));
    m_rgButton->setText(QString::fromLocal8Bit("塔塔"));
    m_rgButton->setStyleSheet("QToolButton{border: none; background: rgb(68, 69, 73); color: rgb(0, 160, 230);}");
    
    hLayout->addWidget(m_upButton);
    hLayout->addWidget(m_doButton);
    hLayout->addWidget(m_lfButton);
    hLayout->addWidget(m_rgButton);

void setDefaultAction(QAction *action)
将默认操作设置为 action。
如果工具按钮具有默认操作，则该操作定义按钮的属性，例如文本、图标、工具提示等。

运行效果图：


    m_ColorButton1 = new QToolButton();
    //QAction* action = m_ColorButton->defaultAction();//默认返回值为NULL
    QAction* action = new QAction(QString::fromLocal8Bit("塔塔"));
    action->setIcon(QIcon(":/Res/Icon/ship.png"));
    action->setToolTip(QString::fromLocal8Bit("加油"));
    m_ColorButton1->setIconSize(QSize(64, 64));
    m_ColorButton1->setDefaultAction(action);
    m_ColorButton1->setToolButtonStyle(Qt::ToolButtonTextUnderIcon);

void setMenu(QMenu *menu)

运行效果图：


    m_ColorButton2 = new QToolButton();
    
    QAction* action2 = new QAction(QString::fromLocal8Bit("塔塔2"));
    action2->setIcon(QIcon(":/Res/Icon/Picture.ico"));
    action2->setToolTip(QString::fromLocal8Bit("加油2"));
    
    QMenu* menu = new QMenu();
    menu->addAction(QIcon(":/Res/Icon/Home.ico"), QString::fromLocal8Bit("主页"));
    menu->addAction(QIcon(":/Res/Icon/Wifi.ico"), QString::fromLocal8Bit("Wifi"));
    menu->addAction(QIcon(":/Res/Icon/Update.ico"), QString::fromLocal8Bit("更新"));
    menu->addAction(QIcon(":/Res/Icon/Folder.ico"), QString::fromLocal8Bit("文件夹"));
    m_ColorButton2->setPopupMode(QToolButton::MenuButtonPopup);
    m_ColorButton2->setIconSize(QSize(64, 64));
    m_ColorButton2->setDefaultAction(action2);
    m_ColorButton2->setMenu(menu);
    
    m_ColorButton2->setToolButtonStyle(Qt::ToolButtonTextUnderIcon);

源码：


    QVBoxLayout* vLayout = new QVBoxLayout();
    QHBoxLayout* hLayout = new QHBoxLayout();
    
    m_upButton = new QToolButton();
    m_doButton = new QToolButton();
    m_lfButton = new QToolButton();
    m_rgButton = new QToolButton();
    
    //By default, this property is set to Qt::NoArrow.
    m_upButton->setArrowType(Qt::UpArrow);
    //The default is Qt::ToolButtonIconOnly.
    m_upButton->setToolButtonStyle(Qt::ToolButtonTextUnderIcon);
    m_upButton->setIconSize(QSize(48, 48));
    m_upButton->setText(QString::fromLocal8Bit("塔塔"));
    m_upButton->setStyleSheet("QToolButton{border: none; background: rgb(68, 69, 73); color: rgb(0, 160, 230);}");
    
    m_doButton->setArrowType(Qt::DownArrow);
    m_doButton->setToolButtonStyle(Qt::ToolButtonTextUnderIcon);
    m_doButton->setIconSize(QSize(48, 48));
    m_doButton->setText(QString::fromLocal8Bit("塔塔"));
    m_doButton->setStyleSheet("QToolButton{border: none; background: rgb(68, 69, 73); color: rgb(0, 160, 230);}");
    
    m_lfButton->setArrowType(Qt::LeftArrow);
    m_lfButton->setToolButtonStyle(Qt::ToolButtonTextUnderIcon);
    m_lfButton->setText(QString::fromLocal8Bit("塔塔"));
    m_lfButton->setIconSize(QSize(48, 48));
    m_lfButton->setStyleSheet("QToolButton{border: none; background: rgb(68, 69, 73); color: rgb(0, 160, 230);}");
    
    m_rgButton->setArrowType(Qt::RightArrow);
    m_rgButton->setToolButtonStyle(Qt::ToolButtonTextUnderIcon);
    m_rgButton->setIconSize(QSize(48, 48));
    m_rgButton->setText(QString::fromLocal8Bit("塔塔"));
    m_rgButton->setStyleSheet("QToolButton{border: none; background: rgb(68, 69, 73); color: rgb(0, 160, 230);}");
    
    hLayout->addWidget(m_upButton);
    hLayout->addWidget(m_doButton);
    hLayout->addWidget(m_lfButton);
    hLayout->addWidget(m_rgButton);
    
    m_ColorButton1 = new QToolButton();
    //QAction* action = m_ColorButton->defaultAction();//默认返回值为NULL
    QAction* action = new QAction(QString::fromLocal8Bit("塔塔"));
    action->setIcon(QIcon(":/Res/Icon/ship.png"));
    action->setToolTip(QString::fromLocal8Bit("加油"));
    m_ColorButton1->setIconSize(QSize(64, 64));
    m_ColorButton1->setDefaultAction(action);
    m_ColorButton1->setToolButtonStyle(Qt::ToolButtonTextUnderIcon);
    
    m_ColorButton2 = new QToolButton();
    
    QAction* action2 = new QAction(QString::fromLocal8Bit("塔塔2"));
    action2->setIcon(QIcon(":/Res/Icon/Picture.ico"));
    action2->setToolTip(QString::fromLocal8Bit("加油2"));
    
    QMenu* menu = new QMenu();
    menu->addAction(QIcon(":/Res/Icon/Home.ico"), QString::fromLocal8Bit("主页"));
    menu->addAction(QIcon(":/Res/Icon/Wifi.ico"), QString::fromLocal8Bit("Wifi"));
    menu->addAction(QIcon(":/Res/Icon/Update.ico"), QString::fromLocal8Bit("更新"));
    menu->addAction(QIcon(":/Res/Icon/Folder.ico"), QString::fromLocal8Bit("文件夹"));
    m_ColorButton2->setPopupMode(QToolButton::MenuButtonPopup);
    m_ColorButton2->setIconSize(QSize(64, 64));
    m_ColorButton2->setDefaultAction(action2);
    m_ColorButton2->setMenu(menu);
    
    m_ColorButton2->setToolButtonStyle(Qt::ToolButtonTextUnderIcon);
    
    QHBoxLayout* hLayout2 = new QHBoxLayout();
    
    hLayout2->addWidget(m_ColorButton1);
    hLayout2->addWidget(m_ColorButton2);
    
    vLayout->addLayout(hLayout);
    vLayout->addLayout(hLayout2);
    
    setLayout(vLayout);

工程项目链接：QToolButton.rar-QT文档类资源-CSDN下载

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