52 lines
1.3 KiB
C
52 lines
1.3 KiB
C
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#include <stdio.h>
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#include <stdlib.h>
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#include <X11/StringDefs.h>
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#include <Xaw/Box.h>
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#include <Xaw/Command.h>
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#include <Xaw/StripChart.h>
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static void
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quit_cb(Widget w, XtPointer client_data, XtPointer call_data)
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{
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XtAppSetExitFlag(XtWidgetToApplicationContext(w));
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}
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static void
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getvalue_cb(Widget widget,XtPointer label_ptr, XtPointer value_ptr)
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{
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static double dbl=0,delta=0.1;
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double *ret = (double *)value_ptr;
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dbl=dbl+delta;
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if (dbl >= 1.0 || dbl <= 0 ) { delta = delta*-1.0 ; }
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*ret=dbl;
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}
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int main(int argc, char **argv)
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{
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Widget toplevel,box,chart,command;
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XtAppContext app_con;
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toplevel = XtAppInitialize(&app_con, "demo", NULL, 0,
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&argc, argv, NULL,
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NULL, 0);
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box = XtCreateManagedWidget("box", boxWidgetClass, toplevel, NULL, 0);
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command = XtVaCreateManagedWidget("cmd",
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commandWidgetClass, box,
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XtNlabel, "EXIT",
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NULL);
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chart = XtVaCreateManagedWidget("chart",
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stripChartWidgetClass, box,
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XtNupdate, 1,
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NULL);
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XtAddCallback(chart,XtNgetValue,getvalue_cb,NULL);
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XtAddCallback(command, XtNcallback, quit_cb, NULL);
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XtRealizeWidget(toplevel);
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XtAppMainLoop(app_con);
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exit(0);
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}
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