n = 0 XtSetArg[args[n], XmNlabelString, label] n++ button = XmCreatePushButton[toplevel, "
n = 0 XtSetArg[args[n], XmNlabelString, label] n++ button = XmCreatePushButton[toplevel, "...
n = 0 XtSetArg[args[n], XmNlabelString, label] n++ button = XmCreatePushButton[toplevel, "...
//建立按钮上标签的字符串 label = XmStringCreateSimple["Hello World!"] n = 0 XtSetArg[args[n], XmNlab...
//建立顶级窗口 toplevel = XtVaAppInitialize[&app, "Label", NULL, 0, &argc, argv, NULL, NULL] ...