AIT_PostMessage
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Description
Posts a message to a message queue associated with the thread used to create a specified window. This API function returns the control without waiting for that thread to process the message.
Format
bool AIT_PostMessage ( integer nWndHandle, // Window handle integer nMessage, // Message integer nWParam, // First parameter for a message integer nLParam // Second parameter for a message );
Parameters
nWndHandle (input)
Specify a window handle to which to post a message.
The following value has a special meaning.
|
Value |
Description |
|---|---|
|
HWND_BROADCAST |
Posts a message to all the top-level windows in the system, including an invalid window not owned, an invisible window not owned, an overlapped window (hidden by another front window), and a pop-up window. Does not post a message to any child windows. |
nMessage (input)
Specify a message you want to post.
nWParam (input)
Specify additional information particular to a message.
nLParam (input)
Specify additional information particular to a message.
Return values
The return value is true if the function was executed normally, and false if not. If the function has returned false, you can use AIT_GetLastError to acquire an extended error code. The following gives the error codes that AIT_GetLastError might return:
|
Extended error number |
Error code |
|---|---|
|
8 |
ERROR_NOT_ENOUGH_MEMORY |
|
14 |
ERROR_OUTOFMEMORY |
|
87 |
ERROR_INVALID_PARAMETER |