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#define _GNU_SOURCE
#include <stdlib.h>
#include <stdio.h>
#include <X11/StringDefs.h>
#include <Xaw/Box.h>
#include <Xaw/Label.h>
#include <Xaw/Scrollbar.h>
#include <Xaw/Command.h>
static void
quit_cb(Widget w, XtPointer client_data, XtPointer call_data)
{
XtAppSetExitFlag(XtWidgetToApplicationContext(w));
}
static void
scroll_cb(Widget widget,XtPointer label_ptr, XtPointer value_ptr)
{
long value = (long)value_ptr;
Widget label = (Widget) label_ptr;
char *msg=NULL;
asprintf(&msg, "%ld", value);
XtVaSetValues( label, XtNlabel, msg, NULL);
free(msg);
}
static void
jump_cb(Widget widget,XtPointer label_ptr, XtPointer value_ptr)
{
float value = *(float *)value_ptr;
Widget label = (Widget) label_ptr;
char *msg=NULL;
asprintf(&msg, "%lf", value);
XtVaSetValues( label, XtNlabel, msg, NULL);
free(msg);
}
int main(int argc, char **argv)
{
Widget toplevel,box,label,scroll,command;
XtAppContext app_con;
toplevel = XtAppInitialize(&app_con, "demo", NULL, 0,
&argc, argv, NULL,
NULL, 0);
box = XtCreateManagedWidget("box", boxWidgetClass, toplevel, NULL, 0);
label = XtVaCreateManagedWidget("Label",
labelWidgetClass,
box, XtNlabel, "hello", NULL);
command = XtVaCreateManagedWidget("cmd",
commandWidgetClass, box,
XtNlabel, "EXIT",
NULL);
XtAddCallback(command, XtNcallback, quit_cb, NULL);
scroll = XtVaCreateManagedWidget("scroller",
scrollbarWidgetClass, box,
XtNorientation,XtorientHorizontal,
XtNlength,500,
XtNwidth,100,
NULL);
XtAddCallback(scroll, XtNscrollProc, scroll_cb, label);
XtAddCallback(scroll,XtNjumpProc,jump_cb,label);
XtRealizeWidget(toplevel);
XtAppMainLoop(app_con);
exit(0);
}
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