Stack overflow while resizing QwtScaleWidgets

[Uwe]

No surprise, when you pass NULL instead of a valid transformation object.

Uwe

[Vashkoda]

Thanks for the hint!

But it still doesn't work. I tried the following and it still crashes.

QwtScaleTransformation *trans = new QwtScaleTransformation( QwtScaleTransformation::Linear );
	QwtScaleTransformation *trans2 = new QwtScaleTransformation( QwtScaleTransformation::Linear );
 
	for( int i = 0; i < 100; i++ ){
		scale->setScaleDiv( trans,  engine->divideScale( 0, i, 6, 10, 10 ) );
		scale2->setScaleDiv( trans2,  engine2->divideScale( 0, i, 6, 10, 10 ) );
	}

QwtScaleTransformation *trans = new QwtScaleTransformation( QwtScaleTransformation::Linear );
	QwtScaleTransformation *trans2 = new QwtScaleTransformation( QwtScaleTransformation::Linear );

	for( int i = 0; i < 100; i++ ){
		scale->setScaleDiv( trans,  engine->divideScale( 0, i, 6, 10, 10 ) );
		scale2->setScaleDiv( trans2,  engine2->divideScale( 0, i, 6, 10, 10 ) );
	}

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[Uwe]

for( int i = 0; i < 100; i++ ){
 
       // you can't reuse the transformation objects !
       QwtScaleTransformation *trans = new  QwtScaleTransformation( QwtScaleTransformation::Linear );
       QwtScaleTransformation *trans2 = new QwtScaleTransformation( QwtScaleTransformation::Linear );
 
       scale->setScaleDiv( trans,  engine->divideScale( 0, i, 6, 10, 10 ) );
       scale2->setScaleDiv( trans2,  engine2->divideScale( 0, i, 6, 10, 10 ) );
}

for( int i = 0; i < 100; i++ ){

       // you can't reuse the transformation objects !
       QwtScaleTransformation *trans = new  QwtScaleTransformation( QwtScaleTransformation::Linear );
       QwtScaleTransformation *trans2 = new QwtScaleTransformation( QwtScaleTransformation::Linear );

       scale->setScaleDiv( trans,  engine->divideScale( 0, i, 6, 10, 10 ) );
       scale2->setScaleDiv( trans2,  engine2->divideScale( 0, i, 6, 10, 10 ) );
}

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HTH,
Uwe

[Vashkoda]

Still doesn't work.
I'll try to find a workaround for this to avoid the seperate scales.

[Uwe]

Still doesn't work.

What does this mean ?

[ ] The same crashes are still there
[ ] You are running into other crashes.
[ ] The crashes are gone, but you are not able to implement your idea with external scale widgets.

Uwe

[Vashkoda]

It works!

I use Perforce SVN and I found that Perforce has qt*.dll's in its path. Of course different versions of Qt than I have. Removing the Perforce entry from the system path solved a lot of oddities.

Thanks for the help, Uwe!