ITfContextKeyEventSink::OnKeyDown method (msctf.h)

Called when a key down event occurs.

Syntax

HRESULT OnKeyDown(
  [in]  WPARAM wParam,
  [in]  LPARAM lParam,
  [out] BOOL   *pfEaten
);

Parameters

[in] wParam

Specifies the virtual-key code of the key. For more information about this parameter, see the wParam parameter in WM_KEYDOWN.

[in] lParam

Specifies the repeat count, scan code, extended-key flag, context code, previous key-state flag, and transition-state flag of the key. For more information about this parameter, see the lParam parameter in WM_KEYDOWN.

[out] pfEaten

Pointer to a BOOL value that, on exit, indicates if the key event is handled. If this value receives TRUE, the key event is handled. If this value is FALSE, the key event is not handled.

Return value

This method can return one of these values.

Requirements

See also

ITfContextKeyEventSink interface, WM_KEYDOWN, Keyboard Input