On Tue, 18 Dec 2001, Ba la wrote:
> Hi Jim & Mark,
> Thanks for the reply, my program is
> working in HP unix, I am able to get both the out put
> in a same window(overlayed), the only change in Linux
> code is in XtOpenDisplay() part, there in HPUX the
> function call using the display parameter as "0:0" and
> second one using "0:1".
I don't understand this. "0:0" and "0:1" are two different
screens.
>
> In Linux the display perameters with "0:1" is
> giving error, so I made it NULL for both the
"0:1" describes the second head in a multihead setup.
If you don't have two monitors this can't succeed.
> XtOpenDisplay() function calls, how to achive in Linux
> the same functionality, since I am using NULL as
> display parameter I am getting two different display,
> unable to achive overlay.
>
> I am new to this X-window programming and
> overlay concept, pls explain.
You mentioned planemasks, now you say overlays. The
two are not the same. Most PC hardware does not support overlays.
You can do some "overlay-type" things with planemasks in
8bpp, but this is a rather archaic usage of the X-Window system.
Mark.
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