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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 wasn't.
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 PostMessagefunction is used to post messages to any window specified by hwndDrainwhich 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.
WM_CHAR WM_DEADCHAR WM_KEYDOWN WM_KEYUP WM_LBUTTONDBLCLK WM_LBUTTONDOWN WM_LBUTTONUP WM_MBUTTONDBLCLK WM_MBUTTONDOWN WM_MBUTTONUP WM_MOUSEACTIVATE WM_MOUSEMOVE WM_NCHITTEST WM_NCLBUTTONDBLCLK WM_NCLBUTTONDOWN WM_NCLBUTTONUP WM_NCMBUTTONDBLCLK WM_NCMBUTTONDOWN WM_NCMBUTTONUP WM_NCMOUSEMOVE WM_NCRBUTTONDBLCLK WM_NCRBUTTONDOWN WM_NCRBUTTONUP WM_RBUTTONDBLCLK WM_RBUTTONDOWN WM_RBUTTONUP WM_SYSCHAR WM_SYSDEADCHAR WM_SYSKEYDOWN WM_SYSKEYUP