CBaseControlWindow::PossiblyEatMessage

Forwards keyboard and mouse messages to a specified window.

BOOL WINAPI PossiblyEatMessage(
  HWND hwndDrain,
  UINT uMsg,
  WPARAM wParam,
  LPARAM lParam
);

Parameters

• hwndDrain
  Handle of the window to which messages will be forwarded.
• uMsg
  Message that was forwarded.
• wParam
  First message parameter.
• lParam
  Second message parameter.

Return Values

Returns TRUE if the message was posted or FALSE if it was not.

Remarks

When the window is owned, it will pass certain classes of messages to the owning window (such as keyboard and mouse events). In this case, the Win32 PostMessage function is used to post messages to any window specified by hwndDrain which is set in CBaseControlWindow::put_MessageDrain. If a certain message cannot be posted, this message will return FALSE.

The following is a list of messages that will get passed on untranslated and return TRUE:

Requirements

DirectShow applications and DirectShow filters have different include file and link library requirements. See Setting Up the Build Environment for more information.

OS Versions: Windows CE 3.0 and later.
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Last updated on Wednesday, April 13, 2005

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