Re: Why do all subcell buttons highlite for custom cell in NSTableView?
Re: Why do all subcell buttons highlite for custom cell in NSTableView?
- Subject: Re: Why do all subcell buttons highlite for custom cell in NSTableView?
- From: Guy Umbright <email@hidden>
- Date: Wed, 11 Jan 2006 09:17:41 -0600
And that was the problem. Only the clicked button highlights now.
Thanks again.
Guy
On Jan 10, 2006, at 9:31 PM, Guy Umbright wrote:
Corbin,
Of course, that would make sense. That was bothering me that if
there is only one cell instance
how would they behave differently? I will implement the
copyWithZone and post the result (so it
is in the archives. Thank you so much.
As for the memory leak, its first cut code but thanks for pointing
it out.
Ron: Sorry to have not responded but somehow I never got your
response. Thanks.
Guy
On Jan 10, 2006, at 6:34 PM, Corbin Dunn wrote:
On Jan 7, 2006, at 3:46 PM, Ron Wilson wrote:
Your drawInteriorWithFrame will draw the m_buttonCell with it's
current settings.
- (BOOL) startTrackingAt: (NSPoint) startPoint inView:(NSView*)
controlView
{
if (NSMouseInRect(startPoint, m_buttonFrame,NO) == YES)
{
[m_buttonCell highlight:YES withFrame:m_buttonFrame
inView:controlView];
The state of m_buttonCell is now highlighted.
[self _RunPanel];
Before this next statement, drawInteriorWithFrame must be being
called for all the table rows and hence all the buttons will be
drawn highlighted. Try logging the calls to drawInteriorWithFrame
or set a breakpoint to see that this is in fact happening.
Just to correct this a little bit. Before tracking occurs, the
cell is copied. That way, it can reflect a state that is different
from all other cells being drawn. Because m_ButtonCell and the
other ivars are not copied (since copyWithZone: isn't
implemented), the copied cell will be using the other ivars; they
themselves should be copied.
Also, the code shown has a memory leak. If, in dealloc,
[_mButtonCell release] was called, eventually there would be
crash, since the ivar instances would be copied, but not retained,
and the extra release would overrelease and crash. Does this make
sense? if not, i can elaborate.
-corbin
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