如何在VS2010 C ++中编写延迟函数 [英] How to write a delay function in VS2010 C++

问题描述

我正在尝试在VS2010 C ++中编写一个函数，以每30秒自动刷新一次UI数据.

我正在尝试将sleep()用作延迟函数，但是我发现它不能很好地工作.

解决方案

如果在Window中进行此操作，请查看无效 [ 解决方案

if you''re doing this in a Window, have a look at the SetTimer()[^] function; it will send your window a WM_TIMER message at the appropriate interval - there''s an example in that link

Why are you using a timer? You should rather just invalidate[^] your display whenever the data changes.

A third solution is to combine the idea from both solutions...

Essentially each time a change is made, a timer is used to delay the update. If another change occurs before the timer has elapsed, then their update will be combined.

But I would go with relatively small delay like 500 ms. But it depends on the application.

My solution would be appropriate when it take some time to process changes (say a few seconds) but you want to combine changes that occurs in a batch (for example, keyboard auto-repeat).

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