The question is, what means the following message in Windows7, 'Canvas does not allow drawing" is this a windows problem or a software problem.

When does it happen? What software are you using?

On Tue, 31 May 2011 17:06:58 +0000, Athalon1951 wrote: The question is, what means the following message in Windows7, 'Canvas does not allow drawing" is this a windows problem or a software problem. I've never seen the message, and it doesn't sound at all like any kind of problem. But it certainly sound like it's coming from an application, not from Windows. Exactly what are you doing when you get it? In what application? Ken Blake, Microsoft MVP

On Tue, 31 May 2011 17:06:58 +0000, Athalon1951 wrote: The question is, what means the following message in Windows7, 'Canvas does not allow drawing" is this a windows problem or a software problem. I've never seen the message, and it doesn't sound at all like any kind of problem. But it certainly sound like it's coming from an application, not from Windows. Exactly what are you doing when you get it? In what application? Ken Blake, Microsoft MVP Hello, I think the problem is the following program, Mosaizer from the Firm APP in Helmond The Netherlands. That program must build a Database from pictures to draw a Mosaic, but when i start building the database from 79000 pictures it stop building on picture 101 with that message Canvas does not allow drawing and the program stop working, that is the problem, and not Windows i see in your reply. :-))

On Tue, 31 May 2011 20:22:48 +0000, Athalon1951 wrote: On Tue, 31 May 2011 17:06:58 +0000, Athalon1951 wrote: The question is, what means the following message in Windows7, 'Canvas does not allow drawing" is this a windows problem or a software problem. I've never seen the message, and it doesn't sound at all like any kind of problem. But it certainly sound like it's coming from an application, not from Windows. Exactly what are you doing when you get it? In what application? Ken Blake, Microsoft MVP Hello, I think the problem is the following program, Mosaizer from the Firm APP in Helmond The Netherlands. That program must build a Database from pictures to draw a Mosaic, but when i start building the database  from 79000 pictures it stop building on picture 101 with that message Canvas does not allow drawing and the program stop working, that is the problem, and not Windows i see in your reply. :-)) Then you should contact the firm who wrote Mosaizer, tell them about your problem, and ask them for help. Ken Blake, Microsoft MVP

Hi, According the issue, here is some description for this error message: Your program may have run out of resources, which means a new DC cannot be allocated. Usually this is a result of not freeing unused DCs or other objects. Your program are attempting to draw to an device context that is not yet valid. Such as in the create constructor of a component. Your program are trying to draw on a canvas while your last draw-operation has not finished yet. In this case you can use Canvas.Lock() or Canvas.TryLock() to fix it. Please refer: http://www.delphifaq.com/faq/delphi/vcl/f267.shtml I really understand how frustrating this is for you. Please understand Mosaizer is not Microsoft Corporation product, Microsoft Corporation have not many information about it. I recommend that you may contact Mosaizer support to cofirm the problem. Please refer: http://www.mosaizer.com/Contact/ Notice: Since the website is not hosted by Microsoft, the links may change without notice. Microsoft does not guarantee the accuracy of this information. Hope that helps Best Regards, Please remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.