Le 9 sept. 06 à 18:08 Soir, Joe Huber a écrit:
At 2:57 PM +0200 9/9/06, Arnaud Nicolet wrote:
You'll have to use the CellTextPaint event of the listbox.
in this event, you have a graphics object,
where you can first set the font and the
colour, then use g.DrawString "^",x,y (x and y
are parameters of the event which indicate the
preferred location to draw the text, where the
OS would draw it if you didn't handle that).
Then, return true.
Yes, this is exactly right.
The one thing I'll add is that this same event
will fire for EVERY cell in your listbox, and
so you need use the Row and Column passed into
this event to decide whether you want to draw
text into this cell yourself (return True) or
let RB draw the normal text into this cell
(return False)
If you do want to draw your own text, then also
use the Row and Column parameters to determine
the correct text for this particular cell.
That's right for RB 2005 and more recents.
In the first post, he precises he's using RB
5.5, where, instead of RB 2005, these events
only fire for row that are physically present.
In ALL versions of RB with the CellTextPaint
event he has to use the Row and Column to decide
whether he wants to override RB's text drawing
and he also needs to use Row and Column to
determine what data he needs to place in each
cell. Those were the two points I was making, and
are correct for all versions of RB with
CellTextPaint events.
This idea of event driven drawing to each cell in
the list can be very confusing because most other
list box operations are driven using a loop to
iterate over the listox cells. So it's worth
being extra specific about how you need to use
the Row and Column parameters to implement
CellTextPaint.
The CellBackgroundPaint event does fire for every
cell in your listbox in both 5.5 and 200x. With
5.5 it's "every populated" cell and with 200x
it's "every visible" cell. :-)
It all depends on the definition of "is". :-)
Regards,
Joe Huber
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