TouchGFX Designer Default Canvas Buffer Size 0

[afergan]

In TouchGFX 4.20 designer my pages mostly have default 7200 canvas buffer size but some pages default canvas buffer size seems 0 like below;

If I do not add a canvas size to these pages manually, this causes errors. Why does this happen on some pages and not on others?

Thanks.

[Yoann KLEIN · Accepted solution]

Hello @afergan​,

This parameter is set to 7200 when you add a widget that requires canvas rendering, such as a circle or a line. Otherwise, no Canvas Buffer is necessary and the size will be set to 0.

So, if you want this parameter to be set, you can either modify it manually or add a shape in your screen.

Hope that answers the question.

/Yoann

[afergan]

Hi @Yoann KLEIN​ ,

Thanks for the information. I think I get this errors because I only crate pages borders on designer and fill inside dynamically in my code. So if I'm going to add circles or lines dynamically, I need to adjust the buffers of these pages.

Thanks.

/Ahmet

[Yoann KLEIN]

Hello,

Yes, if you add widgets that require canvas buffer dynamically from your code, you also need to allow some space for these widget to be drawn.

You are welcome :)

/Yoann