使用NSBorderlessWindowMask时为灰色边框 [英] Gray border when using NSBorderlessWindowMask

问题描述

每当我尝试使用NSBorderlessWindowMask创建一个自定义窗口，并设置一个NSView（例如一个NSImageView）作为其contentView，我得到一个1px灰色边框周围的NSView，我似乎不能够摆脱它。

Whenever I try to create a custom window using NSBorderlessWindowMask and set an NSView (for example an NSImageView) as its contentView, I get a 1px gray border around the NSView and I don't seem to be able to get rid of it.

我已经遵循了几种方法，包括Apple的RoundTransparentWindow示例代码以及对StackOverflow的几个建议。

I have followed several approaches including Apple's RoundTransparentWindow sample code as well as several suggestions on StackOverflow.

怀疑灰色边框来自窗口本身或NSView。

I suspect the gray border is either coming from the window itself or the NSView.

有任何人遇到过这个问题，或者你有可能的解决方案吗？

Have any of you experienced this problem or do you have a possible solution?

代码相当简单。这是自定义窗口的init方法：

The code is fairly straightforward. This is the init method of the custom window:

- (id)initWithContentRect:(NSRect)contentRect styleMask:(NSUInteger)aStyle backing:(NSBackingStoreType)bufferingType defer:(BOOL)flag {
    self = [super initWithContentRect:contentRect styleMask:NSBorderlessWindowMask backing:NSBackingStoreBuffered defer:YES];

    if (self != nil) {
        [self setAlphaValue:1.0];
        [self setBackgroundColor:[NSColor clearColor]];     
        [self setOpaque:NO];
    }

    return self;
}

要测试这一点，在IB中我放置一个NSImageView在自定义窗口然而NSImageView中的图像有一个边框。这同样适用于其他NSView子类，如NSTextField，NSTableView。

To test this, in IB I place an NSImageView in that custom window WITHOUT border and yet the image in the NSImageView has a border. The same goes for other NSView subclasses, such as NSTextField, NSTableView.

此外，我还注意到，苹果的示例应用程序（RoundTransparentWindow）也发生了同样的情况。是否可以在没有1px边框的自定义窗口中绘制NSView？

In addition, I also noticed that the same is happening with the sample application (RoundTransparentWindow) of Apple. Is it even possible to draw an NSView in a custom window without a 1px border?

感谢

推荐答案

当你使用没有绘图的常规NSView时，你确定会发生这种情况吗？我不打赌。其他控件（如NSImageView）有边框。

Are you sure this happens when you use a regular NSView with no drawing? I bet not. Other controls (like NSImageView)have borders. Maybe you should double check to make sure they're turned off whe possible.

更新 - 如何将视图导入您的窗口？您不包括该代码。我创建了一个基本的测试项目（在这里下载）和一个图像，它的工作原理精细。亲自看看。

Update - How do you get your view into your window? You don't include that code. I created a basic test project (download it here) with an image well and it works just fine. See for yourself.

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