Submitted by Anonymous on Thu, 10/09/2003 - 08:48.

• Developers

Dear reader,

I made a piece of program that generates a form with several textfields on it. These textfields are generated in a loop. This means that the all have the same widget name and a different naming. Could you tell me how to read the information that is in the textfields after pressing an button?

The code that I used to create these textfields is as follows.

void MDE(Widget w, XtPointer client_data, XtPointer call_data)
{
Widget toplevelMDE, mainform, subform, last_subform, label, text, btnOk,btnCancel;
Widget dialog, pane, rc, text_w, label_g, frame, frame2, frame3;
Widget CreateActionArea (Widget, ActionAreaItem *, int);
Widget action_area, work_area, check_area, widget;
XmString string;
Arg args[6];
char buf[32], *pCountTags, *pStart, *pEnd, cCurTag[SMALL_BUFFER +1];
char *pStart1, *pEnd1, cCurTag1[SMALL_BUFFER +1], cNew[SMALL_BUFFER +1], *value, *value1;
int n, i, x=0, y, iNmbrTags =0;
static ActionAreaItem action_items[] = {
{ "OK", Ok, NULL},
{ "Cancel", cancel, NULL },
};

TString *check_items;
TString *check_text;
TString *check_new;

/*first count the number of nested label tags*/
pCountTags = cLabelTag;
while (*pCountTags){
if (*pCountTags == `/`){iNmbrTags++;}
pCountTags++;
}
check_items = (TString *) malloc (iNmbrTags * sizeof (TString));
check_text = (TString *) malloc (iNmbrTags * sizeof (TString));
check_new = (TString *) malloc (iNmbrTags * sizeof (TString));
if (!check_items) {return;}

XtSetLanguageProc (NULL, NULL, NULL);

toplevelMDE = XmCreateDialogShell ( GetTopShell (w), "MDE", NULL, 0);

n = 0;
XtSetArg (args[n], XmNsashWidth, 1); n++;
XtSetArg (args[n], XmNsashHeight, 1); n++;
pane = XmCreatePanedWindow (toplevelMDE, "pane", args, n);

rc = XmCreateRowColumn (pane, "control_area", NULL, 0);
frame2 = XmCreateFrame (rc, "frame2", NULL,0);
frame3 = XmCreateFrame (rc, "frame3", NULL,0);

/* Create the check area.*/

mainform = XmCreateForm (frame2, "mainform", NULL, 0);
last_subform = NULL;

/*split the nested loop and make labels and text of it.*/
pStart = strchr (cLabelTag, `/`); pStart++;
pStart1 = strchr (cTextTag, `/`); pStart1++;
for (i = 0; i < iNmbrTags; i++) {
pEnd = strchr (pStart, `/`);
pEnd1 = strchr (pStart1, `/`);
if (!pEnd){
pEnd = pStart + strlen (pStart); /*for last nested tag.*/
}
if (!pEnd1){
pEnd1 = pStart1 + strlen (pStart1); /*for last nested tag.*/
}
CopyString (0, (pEnd - pStart), pStart, &cCurTag[0]);
strcpy((char *)check_items[i], cCurTag);
pStart = pEnd + 1;
CopyString (0, (pEnd1 - pStart1), pStart1, &cCurTag1[0]);
strcpy((char *)check_text[i], cCurTag1);
pStart1 = pEnd1 + 1;
subform = XmCreateForm (mainform, "subform", NULL, 0);

XtVaSetValues (subform,
XmNtopAttachment, last_subform ? XmATTACH_WIDGET XmATTACH_FORM,
XmNtopWidget, last_subform,
XmNleftAttachment, XmATTACH_FORM,
XmNrightAttachment, XmATTACH_FORM,
NULL);
label = XmCreateLabelGadget (subform, cCurTag, NULL, 0);
XtVaSetValues (label, XmNtopAttachment, XmATTACH_FORM,
XmNbottomAttachment, XmATTACH_FORM,
XmNleftAttachment, XmATTACH_FORM,
XmNalignment, XmALIGNMENT_BEGINNING,
NULL);
XtManageChild (label);

XtSetArg (args[0], XmNvalue, cCurTag1);
sprintf(buff, "text_%d", i);
text = XmCreateText (subform, buff, args, 1);
XtVaSetValues (text, XmNtopAttachment, XmATTACH_FORM,
XmNbottomAttachment, XmATTACH_FORM,
XmNrightAttachment, XmATTACH_FORM,
XmNleftAttachment, XmATTACH_WIDGET,
XmNleftWidget, label,
NULL);
XtManageChild (text);
sprintf(cNew,"/%s",cCurTag1);
strcpy(cNew, (char *)check_new[i]);
XtManageChild (subform);
last_subform = subform;
}

XtManageChild (frame2);

/* Create the action area. */
action_area = XmCreateForm (frame3, "action_area", NULL, 0);

XtVaSetValues (action_area, XmNfractionBase, TIGHTNESS*3,
XmNleftOffset, 7,
XmNrightOffset, 7,
NULL);

btnOk = XmCreatePushButton (action_area, "Ok", NULL, 0);
XtVaSetValues (btnOk, XmNleftAttachment, XmATTACH_POSITION,
XmNleftPosition,2,
XmNtopAttachment, XmATTACH_FORM,
XmNbottomAttachment, XmATTACH_FORM,
XmNrightAttachment, XmATTACH_POSITION,
XmNrightPosition, 7,
XmNshowAsDefault, 0,
XmNdefaultButtonShadowThickness, 1,
NULL);
XtAddCallback (btnOk, XmNactivateCallback, cancel, (XtPointer) toplevelMDE);
XtManageChild (btnOk);

btnCancel = XmCreatePushButton (action_area, "Cancel", NULL, 0);
XtVaSetValues (btnCancel, XmNleftAttachment, XmATTACH_POSITION,
XmNleftPosition,8,
XmNtopAttachment, XmATTACH_FORM,
XmNbottomAttachment, XmATTACH_FORM,
XmNrightAttachment, XmATTACH_POSITION,
XmNrightPosition, 13,
XmNshowAsDefault, 0,
XmNdefaultButtonShadowThickness, 1,
NULL);
XtAddCallback (btnCancel, XmNactivateCallback, cancel, (XtPointer) toplevelMDE);
XtManageChild (btnCancel);
XtManageChild (frame3);
XtManageChild (rc);
XtManageChild (mainform);
XtManageChild (action_area);
XtManageChild (pane);
PositionDialog (pane);
free(check_items);
free(check_text);
}