>
>
>>
>
> You need to place a view here and do the custom drawing in the view. To
> place the view, you need to subclass NSScrollView and override the -tile
> method to place the view in that corner. The scrollview subclass will also
> typically own the custom view.
>
> Here's an example from the archives that will do what you want:
>
> http://www.cocoabuilder.com/archive/message/cocoa/2001/6/29/21070
>
> --Graham
>
>
>
Hi, Graham,
I think I finally got what you said. I referred your linked sample, and
implemented my source as follows.(I enclose my source for anyone who has
same problem with many thanks to this list.) I also needed to add some code
to drawRect to draw my custom view correctly.
If you find any problem from my source, please let me know.
#import "BSScrollView.h"
@implementation BSScrollView
// Prepare a view to be a background of scrollers. This view will cover all
area of scrollView.
- (void) _setScrollerBackgroundView:(NSView *) view{
[view retain];
[_scrollerBackgroundView release];
_scrollerBackgroundView = view;
[self addSubview:_scrollerBackgroundView];
}
- (NSView *) scrollerBackgroundView {
return _scrollerBackgroundView;
}
- (void)tile {
[super tile];
if (![self scrollerBackgroundView])
{
// Place a view that cover all area of scroll view.
NSRect tempRect = NSMakeRect(0.0, 0.0, [self bounds].size.width, [self
bounds].size.height);
NSView *tempView = [NSView allocWithZone:[self zone]];
[tempView initWithFrame:tempRect];
[self _setScrollerBackgroundView:tempView];
}
}
- (void)drawRect:(NSRect)rect {
[super drawRect:rect];
// draw background color for scroll view. This color fills areas under knob
slots and right bottom area of scroll view.
[[NSColor blackColor]set];
NSRectFill([_scrollerBackgroundView frame]);
}
- (void) dealloc {
[_scrollerBackgroundView release];
[super dealloc];
}
@end
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