如何设置面积/矩形在光标被允许移动？ [英] How to set the area/rectangle in which the cursor is allowed to move?

问题描述

例如。当你打你的显示器侧面光标不能再往前走，多的一个例子是微软油漆的时候，你的选择从RGB表中的颜色，它不会让你的鼠标去外面的长方形，而你的鼠标是下跌..

E.g. when you hit the side of your monitor your cursor can't go any further, and more of an example is when in microsoft paint, and your choosing a colour from the RGB table, it won't allow your mouse to go outside of the rectangle while your mouse is down..

我的问题是你会怎么实现，在C ++与Win32 API的？

my question is how would you implement that in c++ with win32 api?

推荐答案

您可以使用Microsoft的以下功能

You can use the following function from Microsoft

BOOL WINAPI ClipCursor(
  __in_opt  const RECT *lpRect
); 

请参阅 http://msdn.microsoft.com /en-us/library/ms648383(VS.85).aspx

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