pixel of Image display

Hi all,

I am displaying Image that i get from camera on QLabel as QImage,

How to make sure that the size of QImage is exactly the size i want in Pixel?

Quote:

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How to make sure that the size of QImage is exactly the size i want in Pixel?

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Code:

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QImage image = ...;
int width = ...;
int height = ...;
QImage scaledImage = image.scaled(width, height, ...);

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Erm... i did tried this.

Code:

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frame=cvQueryFram(cam);
cloneFrame=cvCloneImage(frame);
image=Qimage((const uchar*)cloneFrame->imageData,cloneFrame->width,cloneFrame->height,QImage::Format_RGB888),rgbSwapped();
 image = image.scaled(ui->original->size(),
                                     Qt::KeepAspectRatio,
                                     Qt::SmoothTransformation); // my QLabel size is (320,240)
 
qPainter = newQPainter(&image);
qPainter -> begin(this);
qPainter->setPen(QPen(Qt::red,1,Qt::SolidLine));
qPainter->drawRect(0,0,319,239); //can't see the box since (319,239), 
qPainter->end();
ui->original->setPixmap(qPixmap::fromImage(image));

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I can't see my box out of (319,239)

I guess thats why

Code:

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1) qPainter = new QPainter(&image); 
2) qPainter -> begin(this);

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line 1) - painter will draw on image
line 2) - now painter will draw on current widget, probably outside of paintEvent so you can't see the result