最近有客户需求报表保存为xls的功能，需要保存的文件设置密码保护，特进行尝试！

Workbook.SaveAs method (Excel)

参数详情：

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void  SaveAs(VARIANT &Filename, VARIANT &FileFormat, VARIANT &Password, VARIANT &WriteResPassword, VARIANT &ReadOnlyRecommended, VARIANT &CreateBackup,  long  AccessMode, VARIANT &ConflictResolution, VARIANT &AddToMru, VARIANT &TextCodepage, VARIANT &TextVisualLayout, VARIANT &Local) {      static  BYTE parms[] = VTS_VARIANT VTS_VARIANT VTS_VARIANT VTS_VARIANT VTS_VARIANT VTS_VARIANT VTS_I4 VTS_VARIANT VTS_VARIANT VTS_VARIANT VTS_VARIANT VTS_VARIANT ;     InvokeHelper(0x785, DISPATCH_METHOD, VT_EMPTY,  NULL , parms, &Filename, &FileFormat, &Password, &WriteResPassword, &ReadOnlyRecommended, &CreateBackup, AccessMode, &ConflictResolution, &AddToMru, &TextCodepage, &TextVisualLayout, &Local); }

调用实例：

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BOOL bReadOnlyRecommended = TRUE; BOOL bCreateBackup = TRUE; BOOL bLocal = TRUE; CString strXlsPath = _T( "C:\\test.xls" ); m_book.SaveAs(  _variant_t(strXlsPath),                          // Filename                 _variant_t(- 4143 ) /*xlWorkbookNormal*/ ,           // FileFormat                 _variant_t(_T( "123" )),                           // Password                 _variant_t(_T( "123" )),                           // WriteResPassword                 _variant_t(bReadOnlyRecommended),                // ReadOnlyRecommended                 _variant_t(bCreateBackup),                       // CreateBackup                 _variant_t( 2 ) /*xlShared*/ ,                       // AccessMode                 _variant_t( 2 ) /*xlLocalSessionChanges*/ ,          // ConflictResolution                 vtMissing, vtMissing, vtMissing,                 _variant_t(bLocal));                             // Local

最终成功打开：