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- From: sglanger@vela.acs.oakland.edu (LANGER STEVEN C)
- Subject: motif text widgets
- Message-ID: <1993Jan13.040941.4854@vela.acs.oakland.edu>
- Organization: Oakland University, Rochester MI.
- Distribution: na
- Date: Wed, 13 Jan 1993 04:09:41 GMT
- Lines: 66
-
- Hi folks;
- Another question, this time on text widgets. I have a dialog with
- several one line text widgets attached to it. To the right of each
- text widget is a button. When the button is pressed, I want new text to show
- up in the assocaited text widget.
-
- ________________________________________________
- |
- | text1 b1
- |
- | text2 b2
- |
- |
-
- the code fragment is
- {
- dialog = XmCreateDialogShell (toplevel, ...
-
- form = XmCreateForm (dialog, ...
-
- text1 = XmCreateTextWidget (form, attach upper left
- b1 = XmCreatePushButton (form, attach to right of text widget
-
- XtAddCallback (b1, XmNactivateCallback, cbfunc, "b1");
- XtManageChild (form);
- XtManageChild (dialog);
- }
-
- void cbfunc (Widget w, XtPointer data, XtPointer dummy)
- {
- char *text;
- char str[]="here i am";
-
- if (strcasecmp(data, "b1") == 0)
- {
- temp = XtMalloc (sizeof(str));
- temp[sizeof(str)] = 0 ; /* null terminator */
- XmTextSetString (w, text);
- XtFree (text);
- }
-
- }
-
- This is my adaptation of Heller's example 15-2 file browser.c
- program. The cbfunc is based on read_file.
-
-
- The dialog is created and the default text is drawn, but when the b1
- is pressed, I get a core dump and dbx zeros in on the
- XmTextSetString call.
-
- Any ideas on how to beat this?
-
- --thanks in advance, steve
-
- --
- Steve Langer sglanger@argo.acs.oakland.edu (VMS)
- Oakland University sglanger@vela.acs.oakland.edu (Ultrix)
- ---------------------------------------------------------------------------
- Standard disclaimers apply. In addition, the author makes no guarantees,
- concerning the grammatical accuracy of his writing. Therefore, any ^B's, ^C's,
- midword character additions/deletions and other non-sense which occurs (after
- the work leaves the author's decade old text editor via his decade old Amiga,
- struggles through a local 1200 baud Merit server to be further mauled via the
- remote VAX mail servers) is someone elses problem - namely yours.
- ---------------------------------------------------------------------------
-