device context

基本解释

Copies a bitmap from the source device context to this current device context.
从源设备描述表复制位图到当前设备描述表。
Copies a bitmap with transparent color from the source device context to this current device context.
从源设备描述表复制一个带透明色的位图到当前设备描述表。
Since AlphaBlend requires a device context, not a CPicture object, it's more convenient to draw the new image first (so I can call CPicture::Render) and then blend the old one on top of it.
因为 AlphaBlend 需要设备上下文，而不是 CPicture 对象，首先绘制新图像（所以我调用 CPicture::Render ），然后在其上渐变旧图像要方便一些。

And the multi-device context creates the opportunity to script marketing messages in a story-line form across different screens.
FORBES: Move up http://i.forbesimg.com t Move down
One thing that almost all of the research I have seen agree on is that mobile advertising that is tailored to the specific device and the specific context do much better than generic advertising picked up from the desktop.
FORBES: Move up http://i.forbesimg.com t Move down
We now have a little more REX with responsive design and the fact that the layout is not the problem, the context is: when using a mobile device like smartphones, users are in a mobile context (commuting or waiting in a line).
FORBES: Forget Mobile First, Think Tablet First