向NSImageView添加阴影

本文介绍了向NSImageView添加阴影的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我有一个 NSImageView 并且想要添加一个阴影。我已经尝试做它与编程方式：

I have a NSImageView and want to add a shadow. I've tried doing it programmatically with:

NSShadow *shadow = [[[NSShadow alloc] init] autorelease]; [shadow setShadowBlurRadius:4.0f]; [shadow setShadowOffset:CGSizeMake(4.0f, 4.0f)]; [shadow setShadowColor:[NSColor blackColor]]; [view setShadow:shadow];

但不会出现。有任何想法吗？谢谢。

But it won't appear. Any ideas? Thanks.

推荐答案

您必须设置阴影的参数。

You have to set the parameters of the shadow. By default, it's all zeroes, so it has no visible effect on a view.

请参阅 -setShadowColor：， -setShadowRadius：和 -setShadowOffset：在 NSShadow 我相信。

See -setShadowColor:, -setShadowRadius:, and -setShadowOffset: on NSShadow, I believe.