PostThreadMessage

Important:
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This function places a message in the message queue of the specified thread and then returns without waiting for the thread to process the message.

BOOL
PostThreadMessage(
DWORD
idThread
,
UINT
Msg
,
WPARAM
wParam
,
LPARAM
lParam
);

Parameters

idThread

[in] Identifier of the thread to which the message will be posted.

Msg

[in] Specifies the type of message to be posted.

wParam

[in] Specifies additional message-specific information.

lParam

[in] Specifies additional message-specific information.

Return Values

Nonzero indicates success. Zero indicates failure. To get extended error information, call GetLastError. GetLastErrorreturns ERROR_INVALID_THREAD_ID if idThreadis not a valid thread identifier.

Remarks

The thread to which the message is posted retrieves the message by calling the GetMessageor PeekMessagefunction. The hwndmember of the returned MSGstructure is NULL.

Requirements

Runs on	Versions	Defined in	Include	Link to
Windows CE OS	1.0 and later	Winuser.h		Coredll.lib, Msgque.lib

Note This API is part of the complete Windows CE OS package as provided by Microsoft. The functionality of a particular platform is determined by the original equipment manufacturer (OEM) and some devices may not support this API.