Linear gradient problem

[K4ELO]

I have a Qwt canvas with a gradient which works diagonally, but I don't want the gradient to run from the upper left corner to the bottom right corner. I just want the gradient to run from top to bottom, so both top corners have the same color and both bottom corners have the same corner. Searching but can't find a way to do this.

// code in the Canvas class:
QPalette pal = palette();
 
QLinearGradient gradient;
 
gradient.setCoordinateMode( QGradient::StretchToDeviceMode );
 
gradient.setColorAt( 0.0, QColor( 100, 100, 100 ) );
gradient.setColorAt( 1.0, QColor( 25, 25, 112 ) );
 
pal.setBrush( QPalette::Window, QBrush( gradient ) );
 
setPalette( pal );
 
// and set the canvas to the plot:
QwtPlot::setCanvas(new Canvas());

// code in the Canvas class:
QPalette pal = palette();

QLinearGradient gradient;

gradient.setCoordinateMode( QGradient::StretchToDeviceMode );

gradient.setColorAt( 0.0, QColor( 100, 100, 100 ) );
gradient.setColorAt( 1.0, QColor( 25, 25, 112 ) );

pal.setBrush( QPalette::Window, QBrush( gradient ) );

setPalette( pal );

// and set the canvas to the plot:
QwtPlot::setCanvas(new Canvas());

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I get the gradient ok, just not in the desired direction.
Any help is appreciated.

[Santosh Reddy]

Construct the QLinearGradiant using this constructor, and make sure that start and stop have same x coordinate

QLinearGradient::QLinearGradient ( const QPointF & start, const QPointF & finalStop )

QLinearGradient::QLinearGradient ( const QPointF & start, const QPointF & finalStop )

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or

use setStart(), setFinalStop(), to set the points with same x coordinate