transparent background

[fruzzo]

I try this but It seems don't work.

void AzimutScale::paintEvent( QPaintEvent * ){   
QPainter paint;      
drawScale( &paint ); 
QBitmap bm( size() );   
 bm.fill( color0 );
setMask( bm );    
}

void AzimutScale::paintEvent( QPaintEvent * ){   
QPainter paint;      
drawScale( &paint ); 
QBitmap bm( size() );   
 bm.fill( color0 );
setMask( bm );    
}

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[wysota]

Define "doesn't work". The mask is certainly invalid...

[fruzzo]

Define "doesn't work". The mask is certainly invalid...

"doesn't work" = the widget is filled with black color and don't draw anithing.

[wysota]

I suggest you take a look at some working paintEvent() implementation, because yours doesn't make any sense. Look how you created the painter object - you didn't tell it what to paint on.