[Claudio]

Hi,

in random mode, my application raise the exception “Canvas does not allow drawing”.

I attached the eurekalog log file.

PS: I use always the last version of the Alphaskin 7.x

Best Regards

Claudio

[Support]

Hello

I see “Division by zero” message in the btnOkClick event.

You haven't this error when skins are switched off?

You have this error in all skins or only in skins where button have glowing effect?

[Claudio]

Hi Serge,

skin is always enabled. In my computer test I cannot reproduce this error. Only one of my customer has this issue. I see that the “Division By Zero” error has resolved when I deleted the Application.ProcessMessagess in the btnOnClick event.

>>You have this error in all skins or only in skins where button have glowing effect?

In the skinManager the property AllowGlow is enabled, so yes, when the button have glowing effect.

Thank you very much and Best Regards

Claudio

[Support]

This error was occured in AlphaControls versions 7.1x too?

[Claudio]

Hi Serge,

I don't test because the 7.1x is only in beta release.

Next I need to support of the DevExpress v53 or v54.

Have you an workaround for this issue? The problem is that this error occour in some my customers installation and I need to solve this in short time.

Thank you very much

Best Regards

Claudio

[Support]

DevExpress v53 is supported, you have a problem?

[Claudio]

Hi Serge

yes, you are right. But for the 7.1x version I have only beta release. It is correct?

What's really strange is that I can not replicate the situation. Unfortunately I not have the same hw but I use the same S.O.

I disabled all effects (also the property Allowglowing which by default is true, I set to False) but the problem persit.

Thank's

Claudio

PS: Now I test with the 7.10 beta version and let you know

[Claudio]

Hi Serge

I tested with 7.10 but the error still happens (randomly)

Best Regards

Claudio

[Support]

'Claudio' wrote:

I tested with 7.10 but the error still happens (randomly)

You mean that error may be reproduced on your PC now?

This error is linked with threads synchronization seems. Do you uses Synchronize method?

[Claudio]

Hi Serge,

I may have found the problem. In some form I need to draw vector objects very complex. To do this, I use the component VGScene.

The calculations (not the graphics) is performed in a separate thread (I use AsynCall) but to notify the user the status progress of jobs of these calculations the form is updated through calls to Application.ProcessMessages. From my tests it seems that the problem happens only in those forms that use both products (AlphaSkins and VGScene)

Do more tests and let you know

Best Regards

Claudio

[Claudio]

Hi Serge,

I removed all Application.ProcessMessages and the problem is solved

Now I try to test with the latest version

Best Regards

Claudio

[Author]

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