(DataFlex) Transition from MailMan.FetchByMsgnum to MailMan.FetchOne

Provides instructions for replacing deprecated FetchByMsgnum method calls with FetchOne.

Note: This example requires Chilkat v11.0.0 or greater.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

Use ChilkatAx-win32.pkg

Procedure Test
    Handle hoMailman
    Integer iMsgnum
    Variant vEmailObj
    Handle hoEmailObj
    Boolean iHeaderOnly
    Integer iNumBodyLines
    Variant vEmailOut
    Handle hoEmailOut
    Boolean iSuccess
    String sTemp1
    Boolean bTemp1

    Get Create (RefClass(cComChilkatMailMan)) To hoMailman
    If (Not(IsComObjectCreated(hoMailman))) Begin
        Send CreateComObject of hoMailman
    End

    // ...
    // ...

    Move 123 To iMsgnum

    // ------------------------------------------------------------------------
    // The FetchByMsgnum method is deprecated:

    Get ComFetchByMsgnum Of hoMailman iMsgnum To vEmailObj
    If (IsComObject(vEmailObj)) Begin
        Get Create (RefClass(cComChilkatEmail)) To hoEmailObj
        Set pvComObject Of hoEmailObj To vEmailObj
    End
    Get ComLastMethodSuccess Of hoMailman To bTemp1
    If (bTemp1 = False) Begin
        Get ComLastErrorText Of hoMailman To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    // ...
    // ...

    Send Destroy of hoEmailObj

    // ------------------------------------------------------------------------
    // Do the equivalent using FetchOne.
    // Your application creates a new, empty Email object which is passed 
    // in the last argument and filled upon success.

    Move False To iHeaderOnly
    // Irrelevant because we are not downloading headers-only.
    Move 0 To iNumBodyLines

    Get Create (RefClass(cComChilkatEmail)) To hoEmailOut
    If (Not(IsComObjectCreated(hoEmailOut))) Begin
        Send CreateComObject of hoEmailOut
    End
    Get pvComObject of hoEmailOut to vEmailOut
    Get ComFetchOne Of hoMailman iHeaderOnly iNumBodyLines iMsgnum vEmailOut To iSuccess
    If (iSuccess = False) Begin
        Get ComLastErrorText Of hoMailman To sTemp1
        Showln sTemp1
        Procedure_Return
    End



End_Procedure