如何强制光标为“arrowCursor”当它悬停在NSTextView内部的NSButton？ [英] How to force the cursor to be an "arrowCursor" when it hovers a NSButton that is inside a NSTextView?

问题描述

好的，这里是问题：

我有一个 NSTextView ，我添加我的自定义 NSButton 使用：

Okay, here is the problem:
I have a NSTextView and I add my custom NSButton using:

[_textView addSubview:button];

然后，在我的 NSButton （与 NSTrackingArea 材料一起）：

Then, inside my NSButton subclass, I have (along with the NSTrackingArea stuff):

- (void)mouseEntered:(NSEvent *)event{
     [[NSCursor arrowCursor] set];
}

- (void)mouseExited:(NSEvent *)theEvent{
     [[NSCursor arrowCursor] set];
}

- (void)mouseDown:(NSEvent *)theEvent{
     [[NSCursor arrowCursor] set];
}

- (void)mouseUp:(NSEvent *)theEvent{
     [[NSCursor arrowCursor] set];
}

但是当我将鼠标悬停时，光标保持不变 IBeamCursor （因为它是一个 NSTextView ）。只有当我按下按钮，光标才会更新。然后，当我移动鼠标时，仍然在按钮内，光标返回到 IBeamCursor 。



有关如何做的任何想法？谢谢！

But when I hover it, the cursor remains the same IBeamCursor (because it's a NSTextView). Only when I press the button, the cursor gets updated. And then, when I move the mouse, still inside the button, the cursor goes back to the IBeamCursor.

Any ideas on how to do this? Thank you!

推荐答案

添加仅跟踪进入/退出事件的跟踪区域似乎不足以满足 NSTextView 子视图。不知何故，textview总是赢得并设置 IBeamCursor 。

Adding a tracking area that only tracks enter/exit events seems to be not enough for NSTextView subviews. Somehow the textview always wins and sets it's IBeamCursor.

您可以尝试始终启用鼠标移动事件（ NSTrackingMouseMoved ）的跟踪在 NSButton 子类中添加跟踪区域：

You can try to always enable tracking for mouse move events (NSTrackingMouseMoved) when adding the tracking area in your NSButton subclass:

#import "SSWHoverButton.h"

@interface SSWHoverButton()
{
    NSTrackingArea* trackingArea;
}

@end

@implementation SSWHoverButton

- (void)mouseMoved:(NSEvent*)theEvent
{
    [[NSCursor arrowCursor] set];
}

- (void)updateTrackingAreas
{
    if(trackingArea != nil)
    {
        [self removeTrackingArea:trackingArea];
    }
    NSTrackingAreaOptions opts = (NSTrackingMouseMoved|NSTrackingActiveAlways);
    trackingArea = [[NSTrackingArea alloc] initWithRect:[self bounds]
                                                 options:opts
                                                   owner:self
                                                userInfo:nil];
    [self addTrackingArea:trackingArea];
}

- (void)dealloc
{
    [self removeTrackingArea:trackingArea];
}

@end

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