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Date: Sun 19-Jul-1989 02:52:00 From: Unknown Subject: anquestions /* Written 9:51 pm Jul 18, 1989 by tsui@silver.bacs.indiana.edu in silver:cs.works.next */ /* ---------- "anquestions" ---------- */ The following is a simple example. Several questions: 1) If I do not define newFrame::::: , then though I can creat an object of MyMatrix but it does not response to cellPresssed. Why? I really do not think it is necessary to "overwrite" newFrame this way because I can setAutodisplay etc. after I create object. 2) What should I do to make highlightCell:: work? The cell seems not highlighted at all. /* MyMatrix.m */ #import "MyMatrix.h" #import <appkit/ButtonCell.h> @implementation MyMatrix + newFrame:(const NXRect *)frameRect mode:(int)aMode prototype:aCell numRows:(int)rowsHigh numCols:(int)colsWide { self = [super newFrame:frameRect mode:aMode prototype:aCell numRows:rowsHigh numCols:colsWide]; [self setAutodisplay:YES]; [self setEnabled:YES]; [self setTarget:self]; /* [self setDoubleAction:@selector(deleteSelf)]; */ [self setAction:@selector(deleteSelf)]; counter = 0; return self; } - cellPressed:sender { id aCell; int row=0,col=0; counter++; aCell = [sender selectedCell]; [sender getRow:&row andCol:&col ofCell:aCell]; [sender selectCellAt:-1:-1]; aCell = [[sender cellAt:row:col] copy]; [self setPrototype:aCell]; [self addCol]; [self putCell:aCell at:1:counter]; /* [self setTag:counter at:1:counter]; [self drawCellAt:1:counter]; */ [self sizeToCells]; [self lockFocus]; [self highlightCellAt:1:counter lit:YES]; [self unlockFocus]; return self; } - deleteSelf:sender { id aCell; int row=0,col=0,i; aCell=[self selectedCell]; [self getRow:&row andCol:&col ofCell:aCell]; /* [self lockFocus]; [self highlightCellAt:row:col lit:NO]; [self unlockFocus];*/ [self removeColAt:col andFree:YES]; [self sizeToCells]; counter--; /* for (i=col+1;i<=counter;i++)[self setTag:i at:1:i];*/ return self; } @end /* End of text from silver:cs.works.next */ >From: jasmerb@mist.CS.ORST.EDU (Bryce Jasmer)
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