可可nsview更改光标

本文介绍了可可nsview更改光标的处理方法，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

我尝试更改可可应用程序中的默认光标.我读到了有关此内容的信息，但标准方法对我不起作用.

I tried to change the default cursor in my cocoa application. I read about this but the standard approach isn't working for me.

我尝试将这种方法添加到我的OpenGLView子类中:

I try to add to my OpenGLView subclass this method:

- (void) resetCursorRects { [super resetCursorRects]; NSCursor * myCur = [[NSCursor alloc] initWithImage:[NSImage imageNamed:@"1.png"] hotSpot:NSMakePoint(8,0)]; [self addCursorRect: [self bounds] cursor: myCur]; NSLog(@"Reset cursor rect!"); }

它不起作用.为什么?

推荐答案

您可以通过两种方式进行操作.首先-最简单-是在鼠标进入视图并离开视图时更改光标.

There're two ways you can do it. First - the most simple - is to change the cursor while the mouse enters the view and leaves it.

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

另一种方法是创建跟踪区域(即在awakeFromNib方法中)，并覆盖- (void)cursorUpdate:-方法

Another way is to create tracking area (i.e. in awakeFromNib-method), and override - (void)cursorUpdate:-method

- (void)createTrackingArea { NSTrackingAreaOptions options = NSTrackingInVisibleRect | NSTrackingCursorUpdate; NSTrackingArea *area = [[NSTrackingArea alloc] initWithRect:self.bounds options:options owner:self userInfo:nil]; [self addTrackingArea:area]; } - (void)cursorUpdate:(NSEvent *)event { [[NSCursor pointingHandCursor] set]; }