NSCursor:“设置"；方法没有效果 [英] NSCursor: "set" method has no effect

问题描述

我正在使用Xcode(使用cocos2d)开发Mac应用程序，尝试配置光标，而set"方法在某些情况下似乎没有任何效果......

I am working on a Mac application with Xcode (using cocos2d), trying to configure the cursor, and the "set" method does not seem to have any effect in some cases...

我已经很难在应用程序启动时设置光标(NSTimer 在应用程序真正启动后设置它)，现在我只希望它在用户点击时显示另一个图像；我为此使用 NSNotification，我的光标类收到通知，然后它应该设置新图像，然后......什么都没有.

I already had a hard time to set my cursor at the launch of the application (NSTimer to set it after the application was really launched), and now I just want it to display another image when the user clicks; I use NSNotification for that, my cursor class receives the notification, then it is supposed to set the new image, then... nothing.

这里有一些可能有帮助的代码:

Here is some code which may help:

-(void) click  
{  
    CCLOG(@"Click");  
    NSString *path = [[NSBundle mainBundle] pathForResource:@"point_pressed" ofType:@"png"];  
    NSImage *cursorImage = [[[NSImage alloc] initByReferencingFile:path] autorelease];  
    NSCursor *cursor = [[NSCursor alloc] initWithImage:cursorImage hotSpot:[[NSCursor currentCursor] hotSpot]];  
    [cursor set];  
}  

在初始化中:

    [NSTimer scheduledTimerWithTimeInterval:0.1f target:self selector:@selector(updateCursor:) userInfo:nil repeats:NO];  

以及方法:

-(void) updateCursor:(id)sender  
{  
    CCLOG(@"Update cursor");  
    [[self.cursorsDict objectForKey:@"point"] set];  
}  

当应用程序处于活动状态时，也会调用updateCursor"方法，然后它工作正常，显示正确的光标.
我尝试了很多东西，pop 和 push 方法，setOnMouseEnter"(虽然我还没有使用 rect)，但没有结果...
有人知道吗?

The "updateCursor" method is also called when the application becomes active, and then it works fine, the correct cursor is displayed.
I have tried many things, pop and push methods, "setOnMouseEnter" (although I don't use rect yet), but no result...
Has anyone a clue about this?

陌生人，我写了appWake方法:

Stranger, I wrote the appWake method:

-(void) appWake
{
    int i = rand()%3;
    if(i==0)
        [[self.cursorsDict objectForKey:@"point"] set];
    else if(i==1)
        [[self.cursorsDict objectForKey:@"point_pressed"] set];
    else if(i==2)
        [[self.cursorsDict objectForKey:@"open"] set];
    self.state = ECursorState_Point;
    [NSTimer scheduledTimerWithTimeInterval:0.5f target:self selector:@selector(appWake) userInfo:nil repeats:NO];
}

由通知调用:

[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(appWake) name:EVENT_APPLICATION_DID_BECOME_ACTIVE object:nil];

在appDelegate中设置:

Set in the appDelegate by:

-(void) applicationDidBecomeActive:(NSNotification *)notification
{
    [[NSNotificationCenter defaultCenter] postNotificationName:EVENT_APPLICATION_DID_BECOME_ACTIVE object:nil];
}

当它被这个通知调用时，它工作正常，光标随机变化；但是如果我删除 applicationDidBecomeActive 中的通知并在我的代码中的其他地方调用它，那么它不会做任何事情(尽管我检查了它是否被调用)......

And when it's called by this notification, it works fine, the cursor changes randomly; but if I remove the notification in applicationDidBecomeActive and call it somewhere else in my code, then it does not do anything (although I checked that it is called)...

推荐答案

我知道已经有一段时间了.但我也有类似的问题.

I know it has been awhile. But I had a similar problem.

由于某种原因，从应用程序事件调用时 [光标集] 不起作用.

For some reason [cursor set] doesn't work when being called from the application events.

我是这样做的:

- (void)applicationDidFinishLaunching:(NSNotification *)aNotification
{
    [self performSelector:@selector(doChangeCursor) withObject:nil afterDelay:1];
}

- (void) doChangeCursor
{
    NSString *file = [[NSBundle mainBundle] pathForResource:@"statusBarImage" ofType:@"tiff"];
    NSImage *image = [[NSImage alloc] initWithContentsOfFile:file];
    NSCursor *cursor = [[NSCursor alloc] initWithImage:image hotSpot:NSMakePoint(0, 0)];
    [cursor set];    
}

我希望这能够帮助某人.

I hope this is able to help someone.

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