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