ITfKeyEventSink::OnSetFocus method (msctf.h)

Called when a TSF text service receives or loses the keyboard focus.

Syntax

HRESULT OnSetFocus(
  [in] BOOL fForeground
);

[in] fForeground

If TRUE, the test service receives the focus. Otherwise the text service loses the focus.

If this method succeeds, it returns S_OK. Otherwise, it returns an HRESULT error code.

Requirement	Value
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