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From: stumpf@lan.informatik.tu-muenchen.dbp.de (Maex)
Newsgroups: comp.windows.x
Subject: question: XToolkit - callbacks
Message-ID: <599@tuminfo1.lan.informatik.tu-muenchen.dbp.de>
Date: 15 Jun 89 14:13:16 GMT
Sender: news@lan.informatik.tu-muenchen.dbp.de
Reply-To: stumpf@lan.informatik.tu-muenchen.dbp.de (Maex)
Organization: Inst. fuer Informatik, TU Muenchen, W. Germany
Lines: 56

Hello, it's me again!

This time I have a problem on callbacks!

Currently I'm creating a "confirm" widget, which looks like this:

	+-------------------------------+
	|                               |
	|         (any message)         |
	|                               |
	|     +-------+   +-------+     |
	|     | butt1 |   | butt2 |     |
	|     +-------+   +-------+     |
	|                               |
	+-------------------------------+

(any message) is a labelWidget
butt1, butt2  are commandWidgets

My widget supports XtNcallback.
I have a callback routine ButtonPress() which I add to the
callback list of butt1 and butt2 and which gets in the client_data
0 or 1, depending on which button was clicked. This value (o or 1)
I'd like to put in the  client_data field of "my" callback.

My problem is, that when ButtonPress() is called, I only get the
WidgetId of the commandWidget the button was pressed in, but not
the WidgetId of "my" widget.
Currently ButtonPress looks like this:

static void ButtonPress(w, cl_data, ca_data)
   Widget	w;
   caddr_t	cl_data, ca_data;
{
	XtCallCallbacks(XtParent(w), XtNcallback, cl_data);
}

Is this correct, or is there a better solution, to call "my" callback
list. (The above works correctly for me, but I don't know, whether this
is good behaviour)

Thanks
	\Maex

+------------------------------------------------------------------------------+
|  Markus Stumpf                                                               |
|  TU Muenchen                        local: lan.informatik.tu-muenchen.dbp.de |
|  Inst. f. Informatik                  DFN: stumpf@{local}                    |
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+------------------------------------------------------------------------------+
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|  Markus Stumpf                                                               |
|  TU Muenchen                        local: lan.informatik.tu-muenchen.dbp.de |
|  Inst. f. Informatik                  DFN: stumpf@{local}                    |