Simple question - Subclassing NSView
Simple question - Subclassing NSView
- Subject: Simple question - Subclassing NSView
- From: Vikas <email@hidden>
- Date: Thu, 12 Jun 2008 10:26:24 -0700 (PDT)
Hi,
I have recently started programming on Mac using Objective-C and Cocoa. I am coming from C++/C# world. So, its a fairly basic question. Please help me understand the following code:
@implementation MyView /*MyView inherits from NSView */
-(void)drawRect: (NSRect)aRect {
[[NSColor blackColor] set];
NSRectFill( [self bounds] );
}
In first line, I was expecting something like [self setColor:[NSColor blackColor]]; (similar to this.color = NSColor.blackColor; in C#/C++)
how NSColor object knows about where to set the color?
In second line, NSRectFill(), I was expecting it to be called using square bracket [] notation. Again how this function knows where to fill the rectangle? There is no reference of NSView passed into the function?
Lastly what are the rules of using () verses []?
Thanks in advance for your time!
-Vks
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