CGRect和NSRect之间有什么区别吗？ [英] Is there any difference between a CGRect and an NSRect?

问题描述

CGRect 和 NSRect 之间有什么区别吗？特别是，我想知道原点的位置。有什么重要的区别我需要知道吗？

解决方案

此链接有更多信息。在此复制以便快速参考：

是CoreGraphics等效于 NSRect 。

它们有意在内存中具有相同的布局。因此，允许通过执行以下操作将 NSRect 转换为 CGRect ：

  CGRect cgrect = *（CGRect *）& nsrect; 
  

CoreGraphics还提供了一个 CGRectMake（）函数它的工作原理与 NSMakeRect（）相同（注意在名称中动词和对象的反转），除了它返回一个 CGRect 。

Is there any difference between a CGRect and an NSRect? In particular, I'm wondering about the position of the origin. Are there any important differences I need to know about?

解决方案

They're the same. This link has more information. Copied here for quick reference:

CGRect is the CoreGraphics equivalent of NSRect.

They are deliberately made to have the same layout in memory. As such, it is allowed to convert an NSRect to a CGRect by doing this:

CGRect cgrect = *(CGRect *)&nsrect;

CoreGraphics also provides a CGRectMake() function which works the same as NSMakeRect() (note the reversal of verb and object in the names) except it returns a CGRect.

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