更改高亮显示的NSButton的背景颜色

问题描述

我有一个NSButton，我希望它的突出显示背景颜色与不突出显示的背景颜色不同(透明，未突出显示，如果有区别的话).

I have an NSButton which I want to have a different background color when it's highlighted than when it's not (transparent on not highlighted, if that makes any difference).

目前，我有以下代码

[view setWantsLayer:YES];

NSButton* button = [[NSButton alloc] initWithFrame:CGRectMake(0, 0, 100, 100)];
[button setBordered:FALSE];
[(NSButtonCell*)[button cell] setHighlightsBy:NSChangeBackgroundCellMask];

[view addSubview:button];

这将在单击时将背景更改为默认的窗口背景颜色.如果我删除NSChangeBackgroundCellMask，背景就会消失.

This will change the background to the default window background color on click. If I remove NSChangeBackgroundCellMask the background goes away.

有没有一种简便的方法可以让背景具有不同的颜色，或者这是否要求我将NSButton子类化?

Is there an easy way I can have a different color for the background, or does this require me to subclass NSButton?

推荐答案

最后，我通过将NSButtonCell子类化并覆盖

In the end, I solved it by subclassing NSButtonCell and overwriting

- (void) highlight:(BOOL)flag withFrame:(NSRect)cellFrame inView:(NSView*)controlView

进行所需的更改(根据flag更改controlView.layer.backgroundColor)

to make the changes I wanted (changing controlView.layer.backgroundColor based on flag)

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