I was not able to duplicate the Paint Demo problem on XP with a Mobile Intel
945GM Express chipset.
I tried the splitter demo on Vista. When the vertical or horizontal splitter
tool moved out of the graphic area, it left behind a trail of vertical or
horizontal single pixel lines as tall or as wide as the splitter tool but
consisting of bitmap data from prior windows or the background image. Wiggling
the splitter tool when it was outside the graphic area would eventually fill in
an area with alternating one pixel lines, half containing the bad bitmap data
and half containing appropriate bitmap data.
I tried the splitter demo on the XP system and it had one odd artifact: when
the vertical splitter tool moved out of the splitter graphic area and over the
ijx window, it turned into a long triangle or possibly a quadrilateral made up
of single pixel white lines with an invisible apex above the top of the ijx
window. The apex drifted, trailing the splitter tool line as the mouse was
wiggled. When the mouse button was released, the two descending white lines
would be left overlayed on the ijx window and the splitter tool line would be
repainted with the appropriate ijx window contents.
No non-J windows were affected in XP. The horizontal splitter tool did not have
the behavior that the vertical tool did. It behaved correctly.
David Mitchell
David Mitchell wrote:
I was able to reproduce this problem on Vista with an ATI Radeon Xpress
5975 card. It happens with J6.01 and J6.02 beta.
Freehand and Box drawings are clipped appropriately at the edge of the J
Paint Demo graphic area. Line and Ellipse show a bounding box that is
filled with the bitmap from prior window(s) while the mouse button is
held down. When the mouse button is released, the area in the J graphic
area is re-painted with the appropriate content. The area outside the
J graphic area, including the black border line around the graphic area,
the J Paint Demo window borders and any non-J windows underneath the J
Paint Demo window are left with the inappropriate bitmap data.
David Mitchell
Sherlock, Ric wrote:
I don't think so, the display cards are from different manufacturers.
One is a Toshiba M9 laptop with an NVIDA Quadro NVS 130M card, the other
is an 24" iMac with an ATI Radeon HD 2600 XT card.
---bill lam wrote:
Will it be a problem of your display card driver. Which display card
is in use? Do the two vista use the same display card?
I have duplicated the problems on a 2nd Vista machine, but could not
reproduce the Paint Demo problem on an XP SP2 machine. I was able to
reproduce the Splitter Demo behaviour you describe above on
XP, which is
not as severe as it appears to be in Vista. I have posted some
screenshots to the wiki.
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