Specifies whether the background within the update region is to be erased.

指定更新区域的背景是否被擦除。

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The system sends a WM_PAINT message to a window whenever its update region is not empty and there are no other messages in the application queue for that window.

该系统发送一个WM_PAINT消息到一个窗口时，它的更新区域不为空，并在该窗口的消息队列中没有其他消息。

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The paint structure contains a rect data structure that has the smallest rectangle that completely encloses the update region and a flag that specifies whether the background has been erased.

绘图结构中包含了一个RECT数据结构，它包含了完全封闭更新区域的最小矩形以及一个标志，指明背景是否需要擦除。

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One European diplomat says he hopes that the Biden visit means that Clinton-era officials will update their ideas of the region, which often remain stuck in the war years and tend as a result to be anti-Serb.

ECONOMIST: America, Europe and the western Balkans

The President will meet with those folks and have a chance to update, I think, the region on where we are both from a relief well standpoint -- obviously the weather has -- the weather will likely delay the relief well completion by two to three days, but we anticipate that the work will continue again over the weekend.

WHITEHOUSE: Press Briefing

Security Council an update on conditions in the western Sudan region, revisiting a report he gave a year ago.

CNN: U.N.: 100,000 more dead in Darfur than reported