Qt 5.4.1学习(1)

来源：互联网发布：centos ntfs 编辑：程序博客网时间：2024/06/01 20:57

工程名称：TestQt1

界面效果

最终实现了使用代码动态注册按钮事件的功能，并且可以支持在按钮当中获取sender

main.cpp

#include "windowmain.h"#include <QApplication>int main(int argc, char *argv[]){    QApplication a(argc, argv);    WindowMain w;    w.show();    return a.exec();}

windowmain.h

#ifndef WINDOWMAIN_H#define WINDOWMAIN_H#include <QMainWindow>#include <QPushButton>namespace Ui {class WindowMain;}class WindowMain : public QMainWindow{    Q_OBJECTpublic:    explicit WindowMain(QWidget *parent = 0);    ~WindowMain();    bool init();private slots:    void on_pushButton_clicked();    void onClickUi();private:    Ui::WindowMain *ui;    QPushButton* _btn2;};#endif // WINDOWMAIN_H

windowmain.cpp

#include "windowmain.h"#include "ui_windowmain.h"WindowMain::WindowMain(QWidget *parent)    :QMainWindow(parent),    ui(new Ui::WindowMain){    ui->setupUi(this);    init();}WindowMain::~WindowMain(){    delete ui;A}bool WindowMain::init(){    _btn2 = ui->btn2;    // 关闭按钮的连发    //_btn2->setAutoRepeat(false);    QObject::connect(_btn2,  SIGNAL(clicked()), this, SLOT(onClickUi()) );    return true;}void WindowMain::on_pushButton_clicked(){    qDebug("onClicked test1 !");}void WindowMain::onClickUi(){    QPushButton* btn= qobject_cast<QPushButton*>(sender());    if( btn->objectName() == "btn2")    {        qDebug("onClicked btn2 !");    }}

windowmain.ui

<?xml version="1.0" encoding="UTF-8"?><ui version="4.0"> <class>WindowMain</class> <widget class="QMainWindow" name="WindowMain">  <property name="geometry">   <rect>    <x>0</x>    <y>0</y>    <width>806</width>    <height>556</height>   </rect>  </property>  <property name="windowTitle">   <string>WindowMain</string>  </property>  <widget class="QWidget" name="centralWidget">   <widget class="QPushButton" name="pushButton">    <property name="geometry">     <rect>      <x>100</x>      <y>280</y>      <width>91</width>      <height>41</height>     </rect>    </property>    <property name="text">     <string>test1</string>    </property>   </widget>   <widget class="QPushButton" name="btn2">    <property name="geometry">     <rect>      <x>220</x>      <y>280</y>      <width>91</width>      <height>41</height>     </rect>    </property>    <property name="text">     <string>test2</string>    </property>   </widget>  </widget>  <widget class="QMenuBar" name="menuBar">   <property name="geometry">    <rect>     <x>0</x>     <y>0</y>     <width>806</width>     <height>23</height>    </rect>   </property>  </widget>  <widget class="QToolBar" name="mainToolBar">   <attribute name="toolBarArea">    <enum>TopToolBarArea</enum>   </attribute>   <attribute name="toolBarBreak">    <bool>false</bool>   </attribute>  </widget>  <widget class="QStatusBar" name="statusBar"/> </widget> <layoutdefault spacing="6" margin="11"/> <resources/> <connections/></ui>

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