不多说，比较简单，直接给出源码，大家作为参考吧。

对于Cocoa application 话说回来比较easy，如果之前你接触过iOS 的IB的话 ，基本上没什么可说的，上手很快；

因此对于Cocoa Application 不会太快的更新，接着Himi将对之前做的动编彻底的更新一版；后期有时间将继续更新此系列；

  言归正传，对于自定义NSView上一篇已经介绍了，而且本篇主要继续深入NSView的drawRect进行继续研究，示例代码如下，比较容易理解，而且都已备注的很清楚；

//
//  HView.m
//
//  Created by Himi on 12-6-7.
//  Copyright (c) 2012年 Himi. All rights reserved.
//

#import "HView.h"

@implementation HView

- (id)initWithFrame:(NSRect)frame
{
    self = [super initWithFrame:frame];
    if (self) {
        // Initialization code here.
    }

    return self;
}

- (void)drawRect:(NSRect)dirtyRect
{

    //-----------获取整个MyView尺寸------------
    NSRect screen = [self bounds];
    int SW = screen.size.width;
    int SH = screen.size.height;

    //-----------设置整个MyView的颜色------------
    [[NSColor grayColor] set];

    //-----------填充整个MyView---------------
    NSRectFill(screen);

    //-----------绘制字符串---------------
    NSString * strH= @"基础绘制   --By Himi";
    //--绘制不带属性字符串
    [strH drawAtPoint:NSMakePoint(SH*0.5, SH-30) withAttributes:NULL];

    //--绘制带属性字符串
    NSMutableDictionary *md = [NSMutableDictionary dictionary];
    [md setObject:[NSFont fontWithName:@"Times" size:20] forKey:NSFontAttributeName];
    [strH drawAtPoint:NSMakePoint(SH*0.5, SH-70) withAttributes:md];

    //--------绘制矩形----
    NSRect rect1 = NSMakeRect(SH*0.5, SH-100, 30, 20);
    NSRect rect2 = NSMakeRect(SH*0.5, SH-130, 30, 20);
    //填充矩形
    [NSBezierPath fillRect:rect1];
    //绘制矩形
    [NSBezierPath strokeRect:rect2];

    //--------绘制线条(十字线)----
    [[NSColor greenColor] set];
    NSPoint  bm =NSMakePoint(SW*0.5, 0);
    NSPoint  top =NSMakePoint(SW*0.5, SH);
    NSPoint  lf =NSMakePoint(0, SH*0.5);
    NSPoint  rt =NSMakePoint(SW, SH*0.5);
    [NSBezierPath strokeLineFromPoint:bm toPoint:top];
    [NSBezierPath strokeLineFromPoint:lf toPoint:rt];

    //-------绘制椭圆
    [[NSColor redColor] set];
    [[NSBezierPath bezierPathWithOvalInRect:screen] stroke];

    [self setNeedsDisplay:YES];// 强制绘画

//【备注】
//    CGContextRef ref = [[NSGraphicsContext currentContext] graphicsPort];// 获取画布
//    CGContextFlush(ref);//刷新画布
}

-(void) mouseDragged:(NSEvent *)theEvent{
    NSPoint mp = [self convertPoint:[theEvent locationInWindow] fromView:nil];// 鼠标新坐标
    NSLog(@"mouseDragged~%f,%f",mp.x,mp.y);

}
-(void) mouseUp:(NSEvent *)theEvent{
    NSLog(@"mouseUp");

}
-(void) mouseDown:(NSEvent *)theEvent{
    NSLog(@"mouseDown");

}
@end

�0�2注意的是：备注�0�2这两行代码是直接通过获取画布，更新画布进行绘制，其中绘制代码省略，比较容易，这里起个头，推荐使用此种方式绘制；对于做游戏的我们，对于画布刷新画布我想是再熟悉不过了！