How to scale pixmap to fit

[Splatify]

Hi this is the code i currently have:



ui->imagebox->setPixmap(QPixmap("C:\\Picture2.png"))

where imagebox is a label.

How do i scale this to fit the label it is contained within?

Thanks for your time and trouble.

[high_flyer]

Have a look at the QPixmap doc:


QPixmap scaledToHeight ( int height, Qt::TransformationMode mode = Qt::FastTransformation ) const
QPixmap scaledToWidth ( int width, Qt::TransformationMode mode = Qt::FastTransformation ) const

[JohannesMunk]

I think you are looking for:

ui->imagebox->setScaledContents(true);
Joh

[Splatify]

Thanks Joh, your solution worked great.

[beastian]

Hi,

ui->imagebox->setScaledContents(true);

is great, however I need to scale the content of the label background picture just to the width (I've got always wider, then higher pictures and I do not want to make images to be deformed).
I've tried:

void SetImage( QLabel * pLabel, QImage * pImg )
{
pLabel->setBackgroundRole( QPalette::Base );
pLabel->setSizePolicy( QSizePolicy::Ignored, QSizePolicy::Ignored );

pLabel->setAlignment( Qt::AlignHCenter | Qt::AlignVCenter );

QPixmap qPixMap = QPixmap::fromImage( * pImg );
qPixMap.scaledToWidth( 400 ); // width of the label
pLabel->setPixmap( qPixMap );
}
but it doesn't work.

Can anybody suggest me how to do that.
I'll be grateful for an explanation, why the code above doesn't work.

Thank you a lot.

[high_flyer]

you didn't explain what "doesn't work" mean.
But I can prity much guess.
The docs for this method says:

Returns a scaled copy of the image.
So it does not alter the object calling the method, but RETURNS the result.
So you need to do something like:

qPixMap = qPixMap.scaledToWidth( 400 ); // width of the label