vlax-方法-applicable-p (AutoLISP/ActiveX) 
确定对象是否支持特定方法 支持的平台:仅限 Windows 签名(vlax-method-applicable-p obj method) 
 返回值类型:T 或 nil T,如果对象支持该方法;否则。nil 例子针对 LightweightPolyline 对象发出以下命令: (vlax-method-applicable-p WhatsMyLine 'copy) T (vlax-method-applicable-p WhatsMyLine 'AddBox) nil 相关参考 | 
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