XForms: Threads and fl_get_input()

From: Enrico De Filippo (defilippo@lns.infn.it)
Date: Sat Feb 08 2003 - 06:33:06 EST

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    # To subscribers of the xforms list from "Enrico De Filippo" <defilippo@lns.infn.it> :

    Hi,

    I use Xforms v1.0 in some Multithreading applications for a data acquisition
    system on a PC Linux RedHat (8.0). Generally is only the main process that
    access the Xlib via the Xforms library but in some case also a
    secondary thread uses some Xlib functions (generally to write messages
    on display). Thus, to have a better protection against Xlib errors,
    I have inserted as first statement in the program:

          XInitThreads();

    Unfortunately, if I insert this, when I call fl_get_input() (to insert
    a number or a string from keyboard) from a
    forms that is managed my the main program (not by the thread) the
    program is definitively blocked. What is wrong? Is there something
    to do before calling fl_get_input()? The error is not present if I
    eliminate XInitThreads();

                                               Thanks. Enrico De Filippo
                                               Physics Department, Catania
                                               Italy

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