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#include <qapplication.h>
#include <qwidget.h>
#include <qimage.h>
#include <qpixmap.h>
#include <qbitmap.h>
#include <qfile.h>
#include <stdlib.h>
class MoveMe : public QWidget
{
public:
MoveMe( QWidget *parent=0, const char *name=0, WFlags f = 0)
:QWidget(parent,name, f) {}
protected:
void mousePressEvent( QMouseEvent *);
void mouseMoveEvent( QMouseEvent *);
private:
QPoint clickPos;
};
void MoveMe::mousePressEvent( QMouseEvent *e )
{
clickPos = e->pos();
}
void MoveMe::mouseMoveEvent( QMouseEvent *e )
{
move( e->globalPos() - clickPos );
}
int main( int argc, char **argv )
{
QApplication a( argc, argv );
QString fn="tux.png";
if ( argc >= 2 )
fn = argv[1];
if ( ! QFile::exists( fn ) )
exit( 1 );
QImage img( fn );
QPixmap p;
p.convertFromImage( img );
if ( !p.mask() )
if ( img.hasAlphaBuffer() ) {
QBitmap bm;
bm = img.createAlphaMask();
p.setMask( bm );
} else {
QBitmap bm;
bm = img.createHeuristicMask();
p.setMask( bm );
}
MoveMe w(0,0,Qt::WStyle_Customize|Qt::WStyle_NoBorder);
w.setBackgroundPixmap( p );
w.setFixedSize( p.size() );
if ( p.mask() )
w.setMask( *p.mask() );
w.show();
a.setMainWidget(&w);
return a.exec();
}
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