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From: muenx@heike.informatik.uni-dortmund.de (Holger Muenx)
Newsgroups: comp.windows.x
Subject: XmText - Questions
Message-ID: <2280@laura.UUCP>
Date: 26 Jun 90 14:15:13 GMT
Sender: news@laura.UUCP
Reply-To: muenx@heike.informatik.uni-dortmund.de (Holger Muenx)
Organization: Universitaet Dortmund
Lines: 126


Hi!

I'm starting programming with X-Windows and Motif. I have two problems:

1. Is it possible to activate a XmText-Widget without clicking with the mouse
   into it? I imagine the following: I have an application with different
   Text-Widgets. If I press the <Return> key in one widget the next text
   widget should automatically be activated so that the user can continue
   typing in it without moving the mouse. I think it is a good idea to
   minimize the user's mouse-movement operations.

   To do this I need a procedure to activate a widget. Is such thing avaible?

2. I have written an application which uses different windows. I create a
   new window using the XmBulletinBoard-class. Text-Widgets in my main-window
   call their callback without any problem. Text-Widget in BulletinBoards
   refuse to call their callback. What's my mistake? See the sample code
   below my signature. It created two text-widgets, one in the main-window
   and one in the new BulletinBoard.

Thanks in advance,

                                                       -Holger

===========================================================================
|| Holger Muenx, IRB, Universitaet Dortmund, 4600 Dortmund, West-Germany ||
||          Internet: muenx@heike.informatik.uni-dortmund.de             ||
===========================================================================


Sample code (sorry for missing documentation):

#include <X11/Intrinsic.h>
#include <X11/Shell.h>
#include <Xm/Xm.h>
#include <Xm/BulletinB.h>
#include <Xm/Label.h>
#include <Xm/MainW.h>
#include <Xm/RowColumn.h>
#include <Xm/Text.h>

Widget	MakeRowCol();
Widget	MakeText();

void	Callback();

Arg	Args[10];
int	n;

main(argc, argv)
int argc;
char **argv;
{
	Display	*Disp;
	Widget	Shell, MainWindow, BB;

	XtToolkitInitialize();
        Disp = XtOpenDisplay(NULL, NULL, argv[0],  "XUADM",
                             NULL, 0, &argc, argv);
        Shell = XtAppCreateShell(argv[0], "XUADM",
                                 applicationShellWidgetClass, Disp, NULL, 0);
        n = 0;
        MainWindow = XmCreateMainWindow(Shell, "main", Args, n);
        XtManageChild(MainWindow);

	MakeText(MainWindow, "Test #1:", Callback);

        n = 0;
        XtSetArg(Args[n], XmNdialogTitle,
                 XmStringCreateLtoR("Window", XmSTRING_DEFAULT_CHARSET)); n++;
        BB = XmCreateBulletinBoardDialog(MainWindow, "Window", Args, n);

	MakeText(BB, "Test #2:", Callback);

	XtManageChild(BB);

	XtRealizeWidget(Shell);

	XtMainLoop();
}

void Callback(w, client_data, call_data)
Widget  w;
caddr_t client_data;
caddr_t call_data;
{
	printf("Entered: %s\n", XmTextGetString(w));
}

Widget MakeRowCol(Parent, Orientation)
Widget		Parent;
unsigned char	Orientation;
{
	Widget	RowCol;

        n = 0;
        XtSetArg(Args[n], XmNorientation, Orientation); n++;
        RowCol = XmCreateRowColumn(Parent, "RowCol", Args, n);
        XtManageChild(RowCol);

	return RowCol;
}

Widget MakeText(Parent, Question, Callback)
Widget	Parent;
char	*Question;
void	(*Callback)();
{
	Widget	RowCol, Label, Text;

	RowCol = MakeRowCol(Parent, XmHORIZONTAL);

        n = 0;
        Label = XmCreateLabel(RowCol, Question, Args, n);
        XtManageChild(Label);

        n = 0;
        XtSetArg(Args[n], XmNcolumns, 8); n++;
        XtSetArg(Args[n], XmNmaxLength, 8); n++;
        Text = XmCreateText(RowCol, "Text", Args, n);
	XtAddCallback(Text, XmNactivateCallback, Callback, NULL);
        XtManageChild(Text);

	return Text;
}