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The SetCapability method is used by Messaging to set the capabilities that are supported by the transport.


HRESULT SetCapability (
  LPCWSTR pszName,
  LPSPropValue pval


  • pszName
    [in] String value for a setting that the transport maintains. See Remarks for more information.
  • pval
    [in] Supplies an instance of an SPropValue structure that contains the value to set for the capability. There is no need to free this buffer or hold onto it. It is valid only for the duration of the call.

Return Values

This method returns the standard values E_INVALIDARG, E_OUTOFMEMORY, E_UNEXPECTED, and E_FAIL, as well as the following:

  • S_OK
    Indicates success.


Indicates capability setting not maintained by the transport.


The following table lists the set of possible global property string values.

Constant WCHAR setting String value
kszCapSaveSent[] "SaveSent"
kszCapSMSUnicode[] "SMSUnicode"
kszCapIncludeOriginal[] "IncludeOriginal"
kszCapIndentBody[] "IndentBody"
kszCapAddLeading[] "AddLeading"
kszCapLeadChar[] "LeadChar"
kszCapSMSRequestStatus[] "SMSRequestStatus"
kszCapSMTPAllowAuthLogin[] "SMTPAllowAuthLogin"
kszCapDeleteAction[] "DeleteAction"
kszCapReturnAddress[] "ReturnAddress"

The following table lists the set of possible global property string values that have associated Boolean default values, which override the default in IMailSyncHandler::GetCapability.

Constant WCHAR setting String value Default
kszCapFolders[] "Folders" TRUE
kszCapFolderNotifications[] "FolderNotifications" FALSE
kszCapClearAll[] "ClearAll" TRUE
kszCapEmptyDeleteItem[] "EmptyDeleteItem" TRUE
kszCapEditProperties[] "EditProperties" TRUE
kszCapFolderOptions[] "EmptyFolderOptions" TRUE
kszCapMgmtFolder[] "MgmtFolder" TRUE
kszCapSync[] "Sync" TRUE
kszCapSyncOnDockEvent[] "SyncOnDockEvent" TRUE
kszCapConnect[] "Connect" TRUE
kszCapRequireRadio[] "RequireRadio" FALSE
kszCapMarkAttachments[] "MarkAttachments" FALSE
kszCapReplyAll[] "ReplyAll" TRUE
kszCapAlwaysIncludeOriginal[] "AlwaysIncludeOriginal" FALSE
kszCapCompose[] "Compose" TRUE
kszCapOfflineStatus[] "OfflineStatus" TRUE
kszCapCallSender[] "CallSender" FALSE
kszCapLanguage[] "Language" TRUE
kszCapAttachments[] "Attachments" TRUE
kszCapFolderManagementAllowCreate[] "FolderManagementAllowCreate" TRUE
kszCapFolderManagementAllowRename[] "FolderManagementAllowRename" TRUE
kszCapFolderManagementAllowDelete[] "FolderManagementAllowDelete" TRUE


Pocket PC: Pocket PC 2002 and later
Smartphone: Smartphone 2002 and later
OS Versions: Windows CE 3.0 and later
Header: cemapi.h
Library: cemapi.lib

See Also

IMailSyncHandler | Messaging

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