layout.cpp

中嵌培训资料

#include <qapplication.h>
#include <qlabel.h>
#include <qpushbutton.h>
#include <qlayout.h>

class DemoWidget:public QWidget
{
public:
	DemoWidget( QWidget *parent=0, const char *name=0);
};

DemoWidget::DemoWidget( QWidget *parent, const char *name):QWidget(parent, name)
{
	setCaption("QT_LAYOUT_DEMO");
	QBoxLayout *demoLayout = new QVBoxLayout (this, 5);
	QBoxLayout *buttons = new QHBoxLayout(demoLayout);

	int i;
	for (i=1; i<=4; i++)
	{
		QPushButton *btn = new QPushButton(this);
		QString s;
		s.sprintf( "Button %d", i );
		btn->setText(s);

		buttons->addWidget( btn, 10 );
	}

	QLabel *lbl = new QLabel(this);
	lbl->setText("This is a Label");
	lbl->setFrameStyle( QFrame::Panel | QFrame::Sunken );
	lbl->setFixedHeight( lbl->sizeHint().height() );
	lbl->setAlignment( AlignVCenter | AlignLeft);

	demoLayout->addWidget(lbl);
	demoLayout->activate();
}

int main(int argc, char **argv)
{
	QApplication app(argc, argv);
	
	DemoWidget demo;
	app.setMainWidget(&demo);
	demo.show();

	return app.exec();
}