On 5/5/06, Vaisburd, Haim <[EMAIL PROTECTED]> wrote:
I would like to override a method of an existing class.
One way is to create a category and define a method
with the same name, e.g.
@interface NSBitmapImageRep (MyCategory)
- destroy;
@end
Is there any way to call the original method
within the implementation of my override,
in this case the original [NSBitmapImageRep-destroy] ?
Try something like
static IMP originalDestroy;
@implementation NSBitmapImageRep (MyCategory)
+ (void) initialize
{
Method_t destroy;
static BOOL isInitialized = NO;
[super initialize];
if( isInitialized) return;
destroy = class_get_instance_method([NSBitmapImageRep class],
@selector(destroy));
originalDestroy = destroy->method_imp;
isInitialized = YES;
}
void OriginalDestroy(id object)
{
if( object) originalDestroy(object, @selector(destroy));
}
- (void) destroy
{
OriginalDestroy(self);
}
@end
I do that to replace -description but with this I'm still able to use
the original
--
Chris
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