oc mac 截图

mac　１０.６.８　xcode　版本　３.２.６　桌面应用通过

截图代码

static void savePNGImage(CGImageRef imageRef, NSString *path)
{


    NSURL *fileURL = [NSURL fileURLWithPath:path];
    CGImageDestinationRef dr = CGImageDestinationCreateWithURL(( CFURLRef)fileURL, kUTTypePNG , 1, NULL);

    CGImageDestinationAddImage(dr, imageRef, NULL);
    CGImageDestinationFinalize(dr);

    CFRelease(dr);
}

static void save()
{
    CGDirectDisplayID displayID = CGMainDisplayID();
    CGImageRef imageRef = CGDisplayCreateImage(displayID);

    NSString *path = [@"~/Desktop/public.png" stringByExpandingTildeInPath];
    NSLog(@"save file: %@", path);
    savePNGImage(imageRef, path);

    CFRelease(imageRef);
}

按钮点击　调用　

-(IBAction) btnScreenShot:(id) sender{
    printf("screen short start\n");
    save();
}

关联事件后，触发后，　将在桌面保存　png　桌面截图