Re: How Can I Notify DrawRect Method?
Re: How Can I Notify DrawRect Method?
- Subject: Re: How Can I Notify DrawRect Method?
- From: "Chunk 1978" <email@hidden>
- Date: Tue, 9 Dec 2008 11:33:53 -0500
i hadn't tried setNeedsDisplay:YES... but this works... and now i know
what setNeedsDisplay means, which is exciting :)
thanks everyone.
On Tue, Dec 9, 2008 at 11:27 AM, rajesh <email@hidden> wrote:
>
> On Dec 9, 2008, at 5:17 PM, Chunk 1978 wrote:
>
>> i'm assuming this is simple, but i can't solve the problem. at launch
>> of the application, an NSRect is drawn with a userdefault color:
>>
>> -=-=-=-=-
>> - (void)drawRect:(NSRect)rect
>> {
>> NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
>> NSData *colorAsData;
>> colorAsData = [defaults objectForKey:@"aColor"];
>> NSColor *menuBarColor = [NSKeyedUnarchiver
>> unarchiveObjectWithData:colorAsData];
>> [menuBarColor set];
>> NSRectFill([self bounds]);
>> }
>> -=-=-=-=-
>>
>> that works... but now i want that rect to redraw itself when notified
>> to do so, but i can't figure out how to notify the NSRect to draw
>> again... all my NSUserDefaults colorAsData is in place, as well as my
>> NSNotifications. it will print to NSLog so i know that notification
>> is being called, but how do direct that notification to the drawRect
>> method?
>>
>> -=-=-=-=-
>> - (void)awakeFromNib
>> {
>> [MenuBarWindow setAlphaValue:0.0];
>>
>> NSNotificationCenter *notificationCenter = [NSNotificationCenter
>> defaultCenter];
>> NSString *changeColorNotification = @"changeColorNotification";
>> [notificationCenter addObserver:self
>> selector:@selector(changeColor:)
>> changeColorNotification object:nil];
>> }
>>
>> - (void)changeColor:(NSNotification *)notification
>> {
>> NSLog(@"Call drawRect");
>> //call "drawRect:(NSRect)rect" method
>
> Let me cover the obvious part....... ( just to see that no stone is unturned
> )
>
> you mean , even after when you tried [self setNeedsDisplay:YES] ????
> I guess you know that , you are not supposed to invoke the drawRect directly
> ......
>
> Are you sure this what you wanted ? or I didn't get the tone of obvious
> tricky question ??
>
>
>>
>> }
>> -=-=-=-=-
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