Issue with XmCreateOptionMenu -> XmCreatePulldownMenu -> XmCreatePushButton
e p
If you could please help with the following query this would be much
appreciated.
I'm running a large motif system on linux, originally developed about
10 years ago for HP-UX, which works fine apart from the following
issue -
There is some code as follows -
...
XtSetArg(args[ac], XmNx, 300); ac++;
XtSetArg(args[ac], XmNy, 10); ac++;
XtSetArg(args[ac], XmNwidth, 240); ac++;
XtSetArg(args[ac], XmNheight, 30); ac++;
wMO = XmCreateOptionMenu(wOption1, "wMO", args, ac);
XtManageChild(wMO);
ac = 0;
XtSetArg(args[ac], XmNx, 0); ac++;
XtSetArg(args[ac], XmNy, 0); ac++;
XtSetArg(args[ac], XmNwidth, 100); ac++;
XtSetArg(args[ac], XmNheight, 300); ac++;
wMD = XmCreatePulldownMenu(XtParent(wMO), "wMD", args, ac);
ac = 0;
XtSetArg(args[ac], XmNuserData, eEnumValue); ac++;
wBP1 = XmCreatePushButton(wMD, "wBP1", args, ac);
XtManageChild(wBP1);
ac = 0;
XtSetArg(args[ac], XmNuserData, eEnumValue); ac++;
wBP2 = XmCreatePushButton(wMD, "wBP2", args, ac);
XtManageChild(wBP2);
ac = 0;
XtSetArg(args[ac], XmNuserData, eEnumValue); ac++;
wBP3 = XmCreatePushButton(wMD, "wBP3", args, ac);
XtManageChild(wBP3);
Immediately after this, the code does an XtVaGetValues on XmNchildren,
to get a WidgetList of all the children of wImageMD - but it returns
null (rather than wBP1, etc). Also, confusingly, XtParent(wBP1) does
appear to return the parent (wMD).
The code worked fine 10 years ago on the HP-UX system, but ultimately
hits a fatal exception in our RHEL system, as further on in the code
it's unable ofcourse to iterate the sub-widgets of wMD (as it's NULL).
Is there an easy fix to this, or does it necessitate a fundamental
rethink of the whole object model? Might it be caused by a changed
semantics to those motif calls over the last 10 years (our RHEL system
has up-to-date motif libraries).
Any comments on this would be appreciated.
Regards,
Ze
Fred
The code you posted says you get the children array from wImageMD, not
wMD.
--
Fred K