Win32中RedrawWindow和UpdateWindow之间的区别是什么？ [英] What are the differences between RedrawWindow and UpdateWindow in Win32?

问题描述

Win32中的RedrawWindow和UpdateWindow之间的区别是什么？

What are the differences between RedrawWindow and UpdateWindow in Win32?

由于它们似乎有相同的目的刷新窗口，有什么区别？

Since they seem to have the same purpose to refresh a window, what are the differences?

推荐答案

RedrawWindow 通常用于强制重绘整个窗口指定区域内）。

RedrawWindow is typically used to force a redraw of the entire window (or some specified region within) right now.

UpdateWindow 将强制仅重新绘制窗口的更新区域，即自上次绘画循环以来已失效的窗口部分（例如通过调用 InvalidateRect ）。

UpdateWindow will force a redraw of only the update region of the window, i.e. that part of the window that has been invalidated (e.g. by calling InvalidateRect) since the last paint cycle.

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