arm qt移植全程详解（9） private, include, public, parent

yuyang911220

1.
编写下拉菜单程序


mainwidget.h


#include <qpopupmenu.h>
#include <qmenubar.h>
#include <qlabel.h>
#include <qtoolbar.h>
#include <qtoolbutton.h>
#include <qstatusbar.h>


class MyMainWidget: public QMainWindow
{

Q_OBJECT
public:

MyMainWidget( QWidget*parent=0, const char *name=0 );
public slots:

void newFile();

void openFile();

void saveFile();

void exitMain();

void copyFile();
private:

QLabel *statuslabel;
};


#endif






//如下（加粗）可以看到在我们需要汉化的地方都用tr()方法进行标识，利用lupdate就可提取出其中需要汉化的源文字，从而生成.ts文件。
mainwidget.cpp


#include "mainwidget.h"
MyMainWidget::MyMainWidget( QWidget*parent, const char *name )

MainWindow( parent,name )
{


setCaption(MyMainWidget::tr("chineseqt Example"));

setBackgroundColor( white );

statuslabel = new QLabel("", this );

statuslabel->setGeometry(50, 50, 250, 50 );

statuslabel->setBackgroundColor( white );




QPopupMenu *filemenu1 = newQPopupMenu;


filemenu1->insertItem(QPopupMenu::tr("&New"),this, SLOT( newFile() ),CTRL+Key_N );

filemenu1->insertItem(QPopupMenu::tr("&Open"), this,SLOT( openFile() ),CTRL+Key_O );


filemenu1->insertItem(QPopupMenu::tr("&Save"),this, SLOT( saveFile() ), CTRL+Key_S );

filemenu1->insertSeparator();

filemenu1->insertItem(QPopupMenu::tr("E&xit"), this,SLOT( exitMain() ),CTRL+Key_X );


QPopupMenu *filemenu2 = newQPopupMenu;


filemenu2->insertItem(QPopupMenu::tr("&Copy"),this, SLOT( copyFile() ),CTRL+Key_C );

QMenuBar *menubar;

menubar = new QMenuBar( this );


menubar->insertItem(QMenuBar::tr("&File"),filemenu1);

menubar->insertItem(QMenuBar::tr("&Edit"), filemenu2);

statusBar()->message(MyMainWidget::tr("Ready"));
}