//建立顶级窗口 toplevel = XtVaAppInitialize[&app, "DrawArea", NULL, 0, &argc, argv, NULL, NULL] //建立drawarea n = 0 XtSetArg[args[n], XmNwidth, 500 ] n++ XtSetArg[args[n], XmNheight, 500 ] n++ drawarea = XmCreateDrawingArea[toplevel, "drawarea", args, n] XtManageChild[drawarea] //建立绘图所用的GC prepare[]
