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术语
CDBVariant::Clear
释义
CDBVariant::Clear
void Clear();
说明:
调用这个成员函数,可以清除CDBVariant对象。如果m_dwType数据成员的值是DBVT_DATE,DBVT_STRING或DBVT_BINARY,Clear释放与联合指针成员对应的内存。Clear把m_dwType设置为DBVT_NULL。
CDBVariant析构程序调用Clear。
请参阅:CDBVariant::m_dwType
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更新时间:2026/4/17 17:27:23