void rotate()
{
int i;
const int w = 64;
const int h = 64;
QImage image( w, h, 8, 128 ); // create image
for ( i=0; i<128; i++ ) // build color table
image.setColor( i, qRgb(i,0,0) );
for ( int y=0; y<h; y++ ) { // set image pixels
uchar *p = image.scanLine(y);
for ( int x=0; x<w; x++ )
*p++ = (x+y)%128;
}
QPixmap pm;
pm = image; // convert image to pixmap
pm.setOptimization( QPixmap::BestOptim ); // rotation will be faster
QWidget *d = QApplication::desktop(); // w = desktop widget
for ( i=0; i<=360; i += 2 ) {
QWMatrix m;
m.rotate( i ); // rotate coordinate system
QPixmap rpm = pm.xForm( m ); // rpm = rotated pixmap
d->setBackgroundPixmap( rpm ); // set desktop pixmap
d->update(); // repaint desktop
}
}
void MyPaint(NBioBSPRollDemo_Widget* pWidget)
{
QPixmap Spm;
Spm = pWidget->m_RollImage;
Spm.setOptimization(QPixmap::BestOptim);
QWMatrix Sm;
Sm.scale((double)IMAGE_FRAME_WIDTH/(double)pWidget->m_DeviceInfo0.ImageWidth,
(double)IMAGE_FRAME_HEIGHT/(double)pWidget->m_DeviceInfo0.ImageHeight);
QPixmap Srpm = Spm.xForm(Sm);
bitBlt(pWidget->m_frmRoll, 0, 0, &Srpm);
}
