Re: XForms: visual depth

From: Steve Lamont (
Date: Wed Apr 05 2000 - 09:39:23 EDT

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    # To subscribers of the xforms list from (Steve Lamont) :

    > this is the code i wrote to force the visual depth.
    > ----------------
    > fl_cntl.depth=8; // depth = 8 bits
    > fl_cntl.privateColormap=1; // private corlormap
    > fl_cntl.vclass=PseudoColor; //
    > fl_set_defaults(FL_PDVisual|FL_PDDepth|FL_PDPrivateMap,&fl_cntl);

    This must be called *before* fl_initialize(). Are you doing that?

    While logged into the console of the machine (not remotely, since this
    will give you the capabilities of the *server*, which is not what you
    want) in question, type


    > Is there another way to force the visual to be "8 bits
    > depth" ? Or does it come from the hardware ? (I was thinking (yep...i'm
    > able to think...;->) that a screen which can display 24 bits depth
    > pixmap...was able to display 8 bits depth pixmap...)

    This is generally the case. I find it hard to believe that there
    isn't an 8 bit Visual available on the server.

    If you haven't tried already, you might try starting your app with the
    XForms flags `-visual' and `-depth':

            your_app -visual PseudoColor -depth 8 ... other args ...

    and see what happens. This should do the Right Thing.


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