I was trying to draw group2Ds in a Listbox Textpaint Event... and
was getting nothing. I figured that I was getting positional
calculations wrong within the group (I often mess up with Group2D's -
not used to thinking with the center as the origin) . So I kept
tweaking things even though I though what I had SHOULD have worked...
Well a good while later i finally realized that it could NOT be me.
So instead of drawing in a listbox I tried drawing in the paint event
of a canvas .. and low and behold everything was as it should have
been (after I undid all the tweaking)....
Then it dawned on me. In the listbox one is not printing to the
original graphics object but to one obtained from graphics.clip that
is the visible size of the cell
So in my test canvas I put the following code In the Paint event:
g.DrawRect 0,0, g.Width -1 , g.Height -1
Static R As New RoundRectShape
R.Fill = 0
R.Border = 100
R.Width = 12
R.Height = 10
R.CornerWidth = 4
R.CornerHeight = 4
R.Segments = 10
g.DrawObject R, 15, 20
Dim Gr As Graphics= g.Clip(0,0, g.Width, g.Height)
gr.DrawObject R, 15, 50
If things were working correctly I would expect to see two rounded
rectangles offset vertically.
Well the top one was what was expected... but the bottom one was
totally messed up... It looked like a black pealed banana pointing
roughly south west (with the 2 peals hanging)... Note even REMOTELY
like a rounded rectangle!!!! I think StringShapes may be messed up in
clipped regions but i did not go through and test all the object2D's...
Historically this is the type of bug that does not get fixed for a
long time because not a lot of people trip over it <sigh>... But it
once again illustrates why doing anything non routine in RB as always
been crapshoot as long as I have been using it...
- karen
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