ITfCleanupContextDurationSink::OnStartCleanupContext method (msctf.h)

Called when a context cleanup operation is about to begin.

Syntax

HRESULT OnStartCleanupContext();

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

A context cleanup occurs when:

The text service is deactivated while a context is still on the context stack. This can occur when the active text service is changed or when the active language changes while the text service is active.
ITfThreadMgr::Deactivate is called while a context is still on the context stack.

ITfCleanupContextDurationSink::OnStartCleanupContext is called just before the TSF manager begins making ITfCleanupContextSink::OnCleanupContext notifications. When all of the OnCleanupContext notifications complete, the TSF manager calls OnEndCleanupContext.

Requirement	Value
Minimum supported client	Windows 2000 Professional [desktop apps only]
Minimum supported server	Windows 2000 Server [desktop apps only]
Target Platform	Windows
Header	msctf.h
DLL	Imekrcic.dll
Redistributable	TSF 1.0 on Windows 2000 Professional