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On Tuesday, February 10, 2004, at 01:58 PM, reuss wrote:


No one could help me?

On Tue, 10 Feb 2004 03:23:38 +0100, reuss wrote:

I am wondering why all selected cells become white one by one and why
the previous does not become gray thought it should - if I did not make
a mistake.The way they become gray is quite rhapsodic and imprevisible
and ununderstandable for me.
There is a mistake in my code? Where? And what? (ok, it is not too
elegant, but i think it should work). please help andras
















#include <AppKit/AppKit.h>
#include <Foundation/Foundation.h>

@interface CalViewer : NSControl
{
id matrix;
id previouscell;
}
- (id) initWithFrame: (NSRect) aFrame; @end


#include "CalViewer.h"


@implementation CalViewer
- (id) initWithFrame: (NSRect) aFrame {
        self = [super initWithFrame: aFrame]; int i, j, k; k = 0;


matrix = [[NSMatrix alloc] initWithFrame: NSMakeRect(0,0,25,25)]; id protocell = [[NSTextFieldCell alloc] init]; [protocell setDrawsBackground: YES]; [protocell setBackgroundColor: [NSColor windowBackgroundColor]]; [protocell setAction: @selector(changeBackground:)]; [protocell setTarget: matrix]; [matrix setPrototype: protocell]; [matrix setIntercellSpacing: NSMakeSize(0,0)]; [matrix insertRow: 3]; [matrix insertColumn: 3];


for (i=0; i< 4; i++) for(j=0; j<4; j++) { if (k == 0) [[matrix cellAtRow: i column: j] setEnabled: NO]; else { [[matrix cellAtRow: i column: j] setIntValue: k]; [[matrix cellAtRow: i column: j] setFont: [NSFont boldSystemFontOfSize: 12]]; [[matrix cellAtRow: i column: j] setAlignment: NSCenterTextAlignment]; } k++; } previouscell = [matrix cellAtRow: 0 column: 2]; [previouscell setBackgroundColor: [NSColor whiteColor]]; [matrix sizeToCells];

        [self addSubview: matrix];
        return self;
}

- (void) changeBackground: (id) sender {
        [previouscell setBackgroundColor: [NSColor windowBackgroundColor]];
        [[matrix selectedCell]  setBackgroundColor: [NSColor whiteColor]];
        previouscell = [matrix selectedCell];
}

@end
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