Message functions (3.1)
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 SysRefresh()           Let Windows process its pending messages.
 CallWindowProc         Passes message information to a window procedure
 DispatchMessage        Dispatches a message to a window
 GetMessage             Retrieves a message from the message queue
 GetMessagePos          Retrieves the cursor position for the last message
 GetMessageTime         Retrieves the time for the last message
 InSendMessage          Determines whether window is processing SendMessage
 PeekMessage            Checks an application's message queue
 PostAppMessage         Posts a message to an application (task)
 PostMessage            Places a message in a window's message queue
 PostQuitMessage        Informs Windows that an application is exiting
 ReplyMessage           Replies to a message sent through SendMessage
 SendMessage            Sends a message to a window
 SetMessageQueue        Creates a new message queue
 TranslateAccelerator   Processes accelerator keys for menu commands
 TranslateMDISysAccel   Processes MDI keyboard accelerators
 TranslateMessage       Translates virtual-key messages
 WaitMessage            Suspends an application and yields control