QT入门笔记--创建对话框

水深无声 2021-12-24 02:33 239阅读 0赞

**创建对话框的基本步骤：**

**＊创建并初始化子窗口部件**

**＊把子窗口部件放到布局中**

**＊设置Tab键顺序（本文省略了此步骤）**

**＊建立信号-槽之间的连接**

**＊实现对话框中的自定义槽**

**本文所创建的对话框如下：**

**![Center][]**

**MyDialog.h**

**\#ifndef MYDIALOG\_H  
\#define MYDIALOG\_H  
\#include<QDialog>  
\#include<QLabel>  
\#include<QTextEdit>  
\#include<QPushButton>  
\#include<QHBoxLayout>  
\#include<QVBoxLayout>  
\#include<QRadioButton>  
class QCheckBox;  
class QLabel;  
class QTextEdit;  
class QPushButton;  
  
class MyDialog:public QDialog  
\{  
Q\_OBJECT  
public:  
MyDialog(QWidget \*parent = 0);  
signals:  
void submit();  
private slots:  
void result();  
private:  
QLabel \*lbl;  
QTextEdit \*txt\_name;  
QRadioButton \*rbtn\_male;  
QRadioButton \*rbtn\_female;  
QPushButton \*btn\_submit;  
  
  
\};  
  
\#endif // MYDIALOG\_H  
  
  
  
  
  
  
MyDialog.cpp  
  
\#include"MyDialog.h"  
  
MyDialog::MyDialog(QWidget \*parent):QDialog(parent)  
\{  
lbl = new QLabel(tr("Input your name:"));  
txt\_name = new QTextEdit;  
rbtn\_male = new QRadioButton("male");  
rbtn\_female = new QRadioButton("female");  
btn\_submit = new QPushButton("&Submit");  
QHBoxLayout \*top =new QHBoxLayout;  
QHBoxLayout \*middle =new QHBoxLayout;  
QHBoxLayout \*bottom =new QHBoxLayout;  
top->addWidget(lbl);  
top->addWidget(txt\_name);  
middle->addWidget(rbtn\_male);  
middle->addWidget(rbtn\_female);  
bottom->addWidget(btn\_submit);  
QVBoxLayout \*frm=new QVBoxLayout;  
frm->addLayout(top);  
frm->addLayout(middle);  
frm->addLayout(bottom);  
setLayout(frm);  
  
 connect(btn\_submit,SIGNAL(clicked()),this,SLOT(result()));  
  
  
\}  
  
  
void MyDialog::result()  
\{  
emit submit();  
  
  
if(rbtn\_male->isChecked())  
\{  
  
  
txt\_name->append("you are:male");  
\}  
else  
\{  
  
  
txt\_name->append("you are:female");  
\}  
\}  
  
  
  
  
  
  
main.cpp  
  
  
\#include"MyDialog.h"  
\#include <QApplication>  
  
  
int main(int argc, char \*argv\[\])  
\{  
QApplication myapp(argc, argv);  
MyDialog \*md = new MyDialog;  
md->show();  
  
return myapp.exec();  
\}**

[Center]: /images/20211223/7d7faf1d737f4b9aaaeee332d27bd423.png