rao@enuxha.eas.asu.edu (Arun Rao) (02/13/90)
I have a popup shell in my application which contains a dialog
widget. The label of this dialog widget is set (using XtSetValues)
just before popping it up in a callback routine, and the
string displayed varies.
The trouble is that the XtSetValues() is completely ignored after
the first call - the label is set once, and does not change, even
though I've checked that the string I'm using is actually different.
The code fragment is given below:
void callback(w, client_data, call_data)
....................
{
..................
if(n_vector != 0)
sprintf(buffer,"Nearest match is %s, \n%f units away\0",
best_match, min_dist);
else
sprintf(buffer, "Database is empty");
n = 0;
XtSetArg(wargs[n], XtNlabel, buffer); n++;
XtSetArg(wargs[n], XtNsensitive, TRUE); n++;
XtSetValues(client_data->dialog1, wargs, n);
XtPopup(client_data->popup_shell1, XtGrabExclusive);
..................
}
Any help is greatly appreciated.
Thanks in advance.
-Arun
--
Arun Rao
INTERNET: rao@enuxha.eas.asu.edu,rao@acvax.inre.asu.edu BITNET: agaxr@asuacvax
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> I have a popup shell in my application which contains a dialog > widget. The label of this dialog widget is set (using XtSetValues) > just before popping it up in a callback routine, and the > string displayed varies. > The trouble is that the XtSetValues() is completely ignored after > the first call... What version of Xaw are you using? R4 or R3 (please oh please don't say R1 or R2 :-) I think that SetValues in R3 may have been doing a ptr comparision so that if you are using the same buffer you lose. I thought I fixed this in R4 but it might have slipped by me. To work around it you can allocate the string with XtNewString() and then free it after the SetValues() call. Yea, I know it's ugly. If this is still ocurring in R4 then please send a bug report to xbugs@expo using the form supplied in `doc/bugs/bug-report'. Chris D. Peterson MIT X Consortium Net: kit@expo.lcs.mit.edu Phone: (617) 253 - 9608 Address: MIT - Room NE43-213