(DataFlex) Transition from Imap.FetchSingleHeader to Imap.FetchEmail

Provides instructions for replacing deprecated FetchSingleHeader method calls with FetchEmail.

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 hoImap
    Variant vEmailObj
    Handle hoEmailObj
    Boolean iHeaderOnly
    Variant vEmailOut
    Handle hoEmailOut
    Boolean iSuccess
    String sTemp1
    Boolean bTemp1

    Get Create (RefClass(cComChilkatImap)) To hoImap
    If (Not(IsComObjectCreated(hoImap))) Begin
        Send CreateComObject of hoImap
    End

    // ...
    // ...

    // ------------------------------------------------------------------------
    // The FetchSingleHeader method is deprecated:

    Get ComFetchSingleHeader Of hoImap 1 False To vEmailObj
    If (IsComObject(vEmailObj)) Begin
        Get Create (RefClass(cComChilkatEmail)) To hoEmailObj
        Set pvComObject Of hoEmailObj To vEmailObj
    End
    Get ComLastMethodSuccess Of hoImap To bTemp1
    If (bTemp1 = False) Begin
        Get ComLastErrorText Of hoImap To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    // ...
    // ...

    Send Destroy of hoEmailObj

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

    Move True To iHeaderOnly

    Get Create (RefClass(cComChilkatEmail)) To hoEmailOut
    If (Not(IsComObjectCreated(hoEmailOut))) Begin
        Send CreateComObject of hoEmailOut
    End
    Get pvComObject of hoEmailOut to vEmailOut
    Get ComFetchEmail Of hoImap iHeaderOnly 1 False vEmailOut To iSuccess
    If (iSuccess = False) Begin
        Get ComLastErrorText Of hoImap To sTemp1
        Showln sTemp1
        Procedure_Return
    End



End_Procedure