16-3.c

《linux应用开发技术详解》的配套代码

#include <Kapplication.h>
#include <KTMainWiindow.h>
#include <QOect.h>
#include < QPopupMenu.h>
#include < KMenuBar.h>
#include < QtextView.h>
#include <KURL.h>
int main( int argc, char **argv )
{
KApplication a( argc, argv, "example");
MainWindow *window=new MainWindow( "Example" );
window→resize( 400, 300 );
a.setMainWidget( window );
window→show();
return a.exec();
} 
class MainWindow : public KTMainWindow
{
Q_OBJECT
public:
MainWindow ( char * name );
public slots:
void fileOpen();
void fileSave();
};
MainWindow::MainWindow ( char * name ) : KTMainWindow ( name )
{
QPopupMenu *filemenu = new QPopupMenu;
filemenu→insertItem( i18n( "&Open" ), this, SLOT(fileOpen()) );
filemenu→insertItem( i18n( "&Save" ), this, SLOT(fileSave()) );
filemenu→insertItem( i18n( "&Quit" ), kapp, SLOT(quit()) );
QString about =
i18n("This is an Example。\n"
"(c) 1999-2000 by Somebody。\n");
QPopupMenu *helpmenu = helpMenu( about );
KMenuBar *menu = new KMenuBar( this );
menu→insertItem( i18n( "&File" ), filemenu );
menu→insertSeparator();
menu→insertItem( i18n( "&Help" ), helpmenu );
setMenu( menu );
QTextView *hello=new QTextView(
i18n("Hello World !"), "", this );
setView( hello );
} 
void MainWindow::fileOpen()
{
QString tmpFile;
KURL filename = KFileDialog::getOpenURL( QString::null, "*", this );
if( KIO::NetAccess::download( filename。url(), tmpFile ) )
{
/* Do whatever you want with a _local_ file stored as tmpFile */
KIO::NetAccess::removeTempFile( tmpFile );
}
}
void MainWindow::fileSave()
{
KURL filename=KFileDialog::getSaveURL( QString::null, "*", this );
}