.h

    1. #ifndef FLOWMETERCONFIG_H
    2. #define FLOWMETERCONFIG_H
    4. #include <QMainWindow>
    5. #include <QPushButton>
    6. #include <QMenu>
    8. namespace Ui {
    9. class FlowmeterConfig;
    10. }
    12. class FlowmeterConfig : public QMainWindow
    13. {
    14.     Q_OBJECT
    16. public:
    17.     explicit FlowmeterConfig(QWidget *parent = 0);
    18.     ~FlowmeterConfig();
    21. private:
    22.     Ui::FlowmeterConfig *ui;
    24.     QPushButton *btn_show;
    26.     QPushButton *btn_demar;
    28.     // 创建显示按钮的下拉按钮
    29.     void create_clickButton_show();
    31.     // 创建标定按钮的下拉按钮
    32.     void create_clickButton_demar();
    34.     // 显示
    35.     QAction *menu_1; // 显示按钮
    36.     QAction *menu_2; // 多仪表显示
    38.     // 标定
    39.     QAction *menu_3; // 标定
    40.     QAction *menu_4; // 多表标定
    42. public slots:
    44.     // 显示
    45.     void onMenu_1_Triggered(QAction *action);
    47.     // 标定
    48.     void onMenu_2_Triggered(QAction *action);
    50. };
    52. #endif // FLOWMETERCONFIG_H

    .cpp

    1. #include "flowmeterconfig.h"
    2. #include "ui_flowmeterconfig.h"
    4. #include <QPushButton>
    5. #include <QToolBar>
    6. #include <QDebug>
    7. #include <QMouseEvent>
    9. FlowmeterConfig::FlowmeterConfig(QWidget *parent) :
    10.     QMainWindow(parent),
    11.     ui(new Ui::FlowmeterConfig)
    12. {
    13.     ui->setupUi(this);
    15.     // 创建工具栏
    16.     QToolBar *toolBar = new QToolBar(this);
    18.     // 将工具栏添加到视图上
    19.     addToolBar(Qt::TopToolBarArea, toolBar);
    21.     // 只允许上停靠
    22.     toolBar->setAllowedAreas(Qt::TopToolBarArea);
    24.     // 设置浮动操作
    25.     toolBar->setFloatable(false);
    27.     // 设置移动 （相当于总开关）
    28.     toolBar->setMovable(false);
    30.     QPushButton *btn_com = new QPushButton("通讯", this);
    31.     toolBar->addWidget(btn_com);
    33.     btn_show = new QPushButton("显示", this);
    34.     toolBar->addWidget(btn_show); // 将按钮添加到界面
    35.     create_clickButton_show(); // 创建显示按钮的下拉按钮
    37.     QPushButton * btn_config = new QPushButton("配置", this);
    38.     toolBar->addWidget(btn_config);
    40.     btn_demar = new QPushButton("标定", this);
    41.     toolBar->addWidget(btn_demar);
    42.     create_clickButton_demar(); // 创建标定按钮的下拉按钮
    44.     QPushButton * btn_help = new QPushButton("帮助", this);
    45.     toolBar->addWidget(btn_help);
    47. }
    49. FlowmeterConfig::~FlowmeterConfig()
    50. {
    51.     delete ui;
    52. }
    54. // 创建显示按钮的下拉按钮
    55. void FlowmeterConfig::create_clickButton_show()
    56. {
    58.     QMenu * menu = new QMenu(this);
    59.     connect(menu,SIGNAL(triggered(QAction *)),this,SLOT(onMenu_1_Triggered(QAction *)));
    61.     menu_1 = new QAction(btn_show);
    62.     menu_2 = new QAction(btn_show);
    64.     menu->addAction(menu_1);
    65.     menu->addAction(menu_2);
    67.     menu_1->setText(tr("显示数据"));
    68.     menu_2->setText(tr("多仪表显示"));
    70.     btn_show->setMenu(menu);
    72. }
    74. // 判断点击了哪个按钮
    75. void FlowmeterConfig::onMenu_1_Triggered(QAction *action)
    76. {
    77.     if (action == menu_1)
    78.     {
    79.         qDebug()<<"1";
    80.     }
    81.     else if (action == menu_2)
    82.     {
    83.         qDebug()<<"2";
    84.     }
    85. }
    87. // 创建标定按钮的下拉按钮
    88. void FlowmeterConfig::create_clickButton_demar()
    89. {
    91.     QMenu * menu = new QMenu(this);
    92.     connect(menu,SIGNAL(triggered(QAction *)),this,SLOT(onMenu_2_Triggered(QAction *)));
    94.     menu_3 = new QAction(btn_show);
    95.     menu_4 = new QAction(btn_show);
    97.     menu->addAction(menu_3);
    98.     menu->addAction(menu_4);
    100.     menu_3->setText(tr("标定"));
    101.     menu_4->setText(tr("多表标定"));
    103.     btn_demar->setMenu(menu);
    105. }
    107. // 判断点击了哪个按钮
    108. void FlowmeterConfig::onMenu_2_Triggered(QAction *action)
    109. {
    110.     if (action == menu_3)
    111.     {
    112.         qDebug()<<"3";
    113.     }
    114.     else if (action == menu_4)
    115.     {
    116.         qDebug()<<"4";
    117.     }
    118. }

    在其他地方设置下拉框
    image.png