(PowerBuilder) Transition from MailMan.FetchSingleHeader to MailMan.FetchOne

Provides instructions for replacing deprecated FetchSingleHeader 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

integer li_rc
oleobject loo_Mailman
integer li_NumBodyLines
integer li_Msgnum
oleobject loo_EmailObj
integer li_HeaderOnly
oleobject loo_EmailOut
integer li_Success

loo_Mailman = create oleobject
// Use "Chilkat_9_5_0.MailMan" for versions of Chilkat < 10.0.0
li_rc = loo_Mailman.ConnectToNewObject("Chilkat.MailMan")
if li_rc < 0 then
    destroy loo_Mailman
    MessageBox("Error","Connecting to COM object failed")
    return
end if

// ...
// ...

li_NumBodyLines = 5
li_Msgnum = 1

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

loo_EmailObj = loo_Mailman.FetchSingleHeader(li_NumBodyLines,li_Msgnum)
if loo_Mailman.LastMethodSuccess = 0 then
    Write-Debug loo_Mailman.LastErrorText
    destroy loo_Mailman
    return
end if

// ...
// ...

destroy loo_EmailObj

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

li_HeaderOnly = 1

loo_EmailOut = create oleobject
// Use "Chilkat_9_5_0.Email" for versions of Chilkat < 10.0.0
li_rc = loo_EmailOut.ConnectToNewObject("Chilkat.Email")

li_Success = loo_Mailman.FetchOne(li_HeaderOnly,li_NumBodyLines,li_Msgnum,loo_EmailOut)
if li_Success = 0 then
    Write-Debug loo_Mailman.LastErrorText
    destroy loo_Mailman
    destroy loo_EmailOut
    return
end if



destroy loo_Mailman
destroy loo_EmailOut