On 28 Nov 2008, at 3:18 am, Michael A. Crawford wrote:
I assume I can sub-class the control but I wondering if there is a
better way. I'm using a circular slider and would like it to rotate
when I roll the scroll wheel up or down.
You can just implement the -scrollWheel: method in a category. For
example:
@implementation NSSlider (Scrollwheel)
- (void) scrollWheel:(NSEvent*) event
{
[self setFloatValue:[self floatValue] + [event deltaY]];
[self sendAction:[self action] to:[self target]];
}
@end
hth,
Graham
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