秦并天下 易中天:帮我翻译一个句子！canvas does not allow drawing!

= = 在下在澳洲学习过一段时间的油画.对这2个词稍微知道一点点:

所谓DRAWING是指一笔一笔的描画,不仅限于铅笔,也可以是其他介质,如毛笔,钢笔.典型例子是素描.

而PAINTING则更近似于"涂抹"的意思.一般指用整块色彩涂在上面.如油画,国画都被称为PAINTING.

这句话是针对初学油画者不敢在画布上直接用整块色彩绘画,而先小心翼翼地勾勒出轮廓这种做法而说的.(按说油画应该是直接用色彩的差度表现物体的,而不是线条,因此人们很少在油画作品中看见很明显的实线)

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.

帆布不是用来素描的
因为canvas是油画布，是用来for painting的，drawing应该是在纸上完成的

严禁在帆布上涂抹

帆布不准许画!

帆布上不让画画