我创建了NSView的子类来将图像绘制为模式:
@interface CePatternView : NSView
{
NSImage* image;
id observableObjectForImage;
NSString* keyPathForImage;
}
@end
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我实现了以下内容来公开绑定:
+ (void)initialize
{
// Expose the "image" binding to IB.
[self exposeBinding:@"image"];
}
- (Class)valueClassForBinding:(NSString *)binding
{
if([binding isEqualToString:@"image"])
return [NSImage class];
return nil; // Unknown binding
}
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不幸的是,图像绑定不会出现在Interface Builder中.
我是否真的必须创建一个IBPlugin来在Interface Builder中公开绑定?对于我不打算重用的自定义视图来说,这似乎有些过分.