#include #include void HiCB(Widget w,XtPointer client_data,XtPointer call_data); int dir = 0; Widget butt1; int main(int argc, char **argv) { XtAppContext theApp; Widget toplevel; toplevel = XtVaAppInitialize(&theApp, "drawingArea", NULL, 0, &argc, argv, NULL, NULL); butt1= XtVaCreateManagedWidget("Button1", xmArrowButtonWidgetClass, toplevel, XmNarrowDirection,dir, NULL); XtAddCallback(butt1,XmNactivateCallback,HiCB,NULL); XtRealizeWidget(toplevel); { static XtWidgetGeometry Expected[] = { CWWidth | CWHeight , 50, 50, 23, 23, 0,0,0, /* Button1 */ }; PrintDetails(toplevel,Expected); }; LessTifTestMainLoop(toplevel); exit(0); } void HiCB(Widget w,XtPointer client_data,XtPointer call_data) { dir++; dir %= 4; XtVaSetValues(butt1, XmNarrowDirection, dir, NULL); }