QMenu

叁歲伎倆 2022-09-22 03:54 103阅读 0赞

\#include "form1.h"  
\#include "ui\_form1.h"

Form1::Form1(QWidget \*parent) :  
QDialog(parent),  
ui(new Ui::Form1)  
\{  
ui->setupUi(this);  
first = new QAction(tr("&first"), this);  
second = new QAction(tr("&second"), this);  
//first ->setStatusTip(tr("Show the application's About box"));

menu=new QMenu(this);  
menu->addAction(first);  
menu->addAction(second);

connect(first , SIGNAL(triggered()), this, SLOT(f1()));  
connect(second , SIGNAL(triggered()), this, SLOT(s1()));

Form1::~Form1()  
\{  
delete ui;  
\}

void Form1::on\_pushButton\_clicked()  
\{  
QPoint pos;  
pos.setX(0);  
pos.setY(-42);  
menu->exec(ui->pushButton->mapToGlobal(pos));  
\}  
void Form1::f1()  
\{  
qDebug("fffff");  
\}  
void Form1::s1()  
\{  
qDebug("ssssss");  
\}

./.h

\#ifndef FORM1\_H  
\#define FORM1\_H

\#include <QDialog>  
\#include <QMenu>  
\#include <QAction>  
//class QAction;  
//class QMenu;  
namespace Ui \{  
class Form1;  
\}

class Form1 : public QDialog  
\{  
Q\_OBJECT

public:  
explicit Form1(QWidget \*parent = 0);  
~Form1();

private:  
Ui::Form1 \*ui;  
QMenu \*menu;  
QAction \*first;  
QAction \*second;  
private slots:  
void on\_pushButton\_clicked();  
void f1();  
void s1();

\};

\#endif // FORM1\_H

./main

\#include <QtGui/QApplication>  
\#include "form1.h"

int main(int argc, char \*argv\[\])  
\{  
QApplication a(argc, argv);  
Form1 w;  
w.show();

return a.exec();  
\}