RESOLUTION
To resolve this problem, change the custom-built MAPI application to call the
HrGetOneProp (IMailuser) function or the
IMailUser->GetProps function to obtain the
PR_TRANSMITABLE_DISPLAY_NAME property.
Note This resolution may cause an extra remote procedure call (RPC) to the server.
Microsoft provides programming examples for illustration only, without warranty either expressed or implied. This includes, but is not limited to, the implied warranties of merchantability or fitness for a particular purpose. This article assumes that you are familiar with the programming language that is being demonstrated and with the tools that are used to create and to debug procedures. Microsoft support engineers can help explain the functionality of a particular procedure, but they will not modify these examples to provide added functionality or construct procedures to meet your specific requirements.
For example, use the following code example.
ComPtr<IMailUser> spMailUser;
hrx = spAddrBook->OpenEntry(entryId->Value.bin.cb, (LPENTRYID)entryId->Value.bin.lpb, &IID_IMailUser, 0, &ulObjType, (IUnknown**)&spMailUser);
LPSPropValue spXmitValue;
hrx = HrGetOneProp(spMailUser, PR_TRANSMITABLE_DISPLAY_NAME_W, &spXmitValue);