Re: XForms: more on formbrowser and image form

From: jprinos@dehavilland.ca
Date: Wed May 10 2000 - 14:57:18 EDT

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    # To subscribers of the xforms list from jprinos@dehavilland.ca :

    spl@szechuan.ucsd.edu (Steve Lamont) on 05/09/2000 05:41:44 PM

    Please respond to xforms@bob.usuhs.mil

    To: xforms@bob.usuhs.mil
    cc: (bcc: John Prinos/BRAD/Bombardier)
    Subject: Re: XForms: more on formbrowser and image form

    # To subscribers of the xforms list from spl@szechuan.ucsd.edu (Steve Lamont) :

    >Is this because it was trying to update the Canvas whenever the child
    >Form was scrolled?

    Yup.

    >If the image is not changing, you may want to consider creating a
    >Pixmap and using XSetWindowBackgroundPixmap() to hang the image onto
    >the Canvas. Then the server will take care of updating the displayed
    >image instead of your application, avoiding much interaction with the
    >server.

    So I need to somehow translate the image I have stored in the flimage object
    into a pixmap type. Is this easily done?

    I've been checking the XPM Manual included in my linux ditribution and I'm
    wondering
    if I have to do a XpmCreateDataFromImage(), then a XpmCreatePixmapFromData() and
    then
    a XSetWindowBackgroundPixmap().
    If this is the case, do I know the XImage of the flimage?

    or am I missing something huge?

    I'll try the idea you included in the latter portion of your last email Steve
    as well.
    I'll see which one works best.

    Thanks in advance,

    J0hn

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