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我有一个自定义的NSView子类,我想要圆角。我用下面的代码.m文件:NSView子类不工作的圆角
#import "ItemImageSelectionView.h"
@implementation ItemImageSelectionView
- (id)initWithFrame:(NSRect)frame
{
self = [super initWithFrame:frame];
if (self) {
self.wantsLayer = YES;
self.layer.frame = self.frame;
}
return self;
}
- (void)drawRect:(NSRect)dirtyRect
{
[[NSColor colorWithCalibratedRed:0.0 green:0.5 blue:1 alpha:1] set];
NSRectFill(dirtyRect);
[self.layer setCornerRadius:5.0];
}
@end
我使用此代码来初始化视图,漂亮的默认:
NSView *imageSelectionView = [[ItemImageSelectionView alloc] initWithFrame:CGRectMake(imageView.frame.origin.x - 2, imageView.frame.origin.y - 2, imageView.frame.size.width + 4, imageView.frame.size.height + 4)];
[self addSubview:imageSelectionView positioned:NSWindowBelow relativeTo:imageView];
但它不设置任何圆角!我究竟做错了什么?