mini2440之--hello程序

  

如上图所示，这个QT程序中有2个组件， pushbutton和textlabel ，点击hello按钮显示相应的字符

hello.h

#ifndef HELLOFORM_H

#define HELLOFORM_H

#include "hello_base.h"

class HelloForm : public HelloBaseForm

{ 

public:

    HelloForm( QWidget* parent = 0, const char* name = 0, WFlags fl = 0 );

    virtual ~HelloForm();

protected:

    virtual void SayHello();

};

#endif // HELLOFORM_H

hello.cpp

#include "hello.h"

#include <qlabel.h>

HelloForm::HelloForm( QWidget* parent, const char* name, WFlags fl):

HelloBaseForm(parent, name, fl)

{

connect(pushbutton,SIGNAL(clicked()),this,SLOT(SayHello()));

}

HelloForm::~HelloForm()

{

}

void HelloForm::SayHello()

{

MessageLabel->setText("Hello, Qtopid!");

}

只需要写出这个类，并在析构函数中实现其所有的功能