ITfCategoryMgr::RegisterCategory method (msctf.h)

Adds a specified GUID to the specified category in the Windows registry.


HRESULT RegisterCategory(
  [in] REFCLSID rclsid,
  [in] REFGUID  rcatid,
  [in] REFGUID  rguid


[in] rclsid

Contains the CLSID of the text service that owns the item.

[in] rcatid

Contains a GUID value that identifies the category to register the item under. This can be a user-defined category or one of the predefined category values.

[in] rguid

Contains a GUID value that identifies the item to register.

Return value

This method can return one of these values.

Value Description
The method was successful.
An unspecified error occurred.


Minimum supported client Windows 2000 Professional [desktop apps | UWP apps]
Minimum supported server Windows 2000 Server [desktop apps | UWP apps]
Target Platform Windows
Header msctf.h
DLL Msctf.dll
Redistributable TSF 1.0 on Windows 2000 Professional

See also

ITfCategoryMgr interface, ITfCategoryMgr::UnregisterCategory, Predefined Category Values