Msg 'Canvas does not allow drawing'
Q: What does the error message 'Canvas does not allow drawing' mean? A: you 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 you are attempting to draw to an device context that is not yet valid. Such as in the create constructor of a component. you 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.
