Cocoa随笔

1、取消NSTextField选中时的蓝色背景

[self.searchField.cell setFocusRingType:NSFocusRingTypeNone];

2、NSTextField变为Focus状态时的回调

1）自定义一个继承自NSTextField的LYSearchField类，

LYSearchField.h：

#import@protocol LYSearchFieldDelegate@optional

- (void)searchFieldFocused;

@end

@interface LYSearchField : NSTextField

@end

LYSearchField.m:

#import "LYSearchField.h"

@implementation LYSearchField

- (void)drawRect:(NSRect)dirtyRect {  

[super drawRect:dirtyRect];       

// Drawing code here.

}

- (BOOL)becomeFirstResponder{  

[super becomeFirstResponder];      

[(id<LYSearchFieldDelegate>)self.delegate searchFieldFocused];

return YES;

}

@end

2)在要使用LYSearchField的类中遵守LYSearchFieldDelegate 实现 －（void）searchFieldFocused；

3、使用代码最小化窗口

[self.window performMiniaturize:nil];

4、让NSTableView不能水平滚动

[self.tableView sizeToFit];

5、让NSTextField 不再focus

[self.window makeFirstResponder:nil];

6.让NSTextField变成focus

[self.passField becomeFirstResponder];