I don't know about Qt libraries but I found that just running the GTK
code fragment checked it fairly easily:
/* Simple check for X display with GTK+ */
include <gtk/gtk.h>
void main (int argc, char **argv){
gboolean return_code;
/* Checks is X Server responds to initialization
Returns true on success, false on failure */
return_code = gtk_init_check(&argc, &argv);
printf("Return Code: %d\n", return_code);
}
Since I do not code much C anymore, it seemed way too easy of a check
but worked very well. When I had my DISPLAY set but local X-Server not
running, it returned false but when I ran it with the X-Server running
it correctly displayed true. It does the same functions as gtk_init but
returns a status code.
Could this be what is needed here to check to see if curses is called
when the DISPLAY is set but there is no X-Server or permissions are
denied?
>> trying to figure out what happened. If the interface is being
changed
>> in this manner than it would seem that simple code to check for a
>> responding X-server or if the X-server connection is denied, it would
>> fall back to curses style windows.
>
>That is a good suggestion. We currently only look on the presence of
>the DISPLAY envvar but don't do any test:
>
> /* Simple test to check whether DISPLAY is set or the option
--display
> was given. Used to decide whether the GUI or curses should be
> initialized. */
> int
> pinentry_have_display (int argc, char **argv)
> {
> #ifndef HAVE_W32CE_SYSTEM
> const char *s;
>
> s = getenv ("DISPLAY");
> if (s && *s)
> return 1;
> #endif
> for (; argc; argc--, argv++)
> if (!strcmp (*argv, "--display"))
> return 1;
> return 0;
> }
>
>If someone can come up with a simple test to check the presence of an X
>server, it should be easy to include it. Note that we don't use Xlib
>directly but GTk+ or Qt. I don't know whether gtk_init returns an
error
>and we would be able fallback to the curses implementation then.
Anyone
>care to test this? (pinentry/gtk+-2/pinentry-gtk-2.c)/
>
>
>Salam-Shalom,
>
> Werner
>
>--
>Die Gedanken sind frei. Ausnahmen regelt ein Bundesgesetz.
>
>
Proud partner. Susan G. Komen for the Cure.
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