SENDMESSAGERAPID-Q SpecificWindows

A WinAPI call to SendMessage, blocks until message is processed. 

Syntax: SENDMESSAGE hWnd, uMsg, wParam, lParam
SENDMESSAGE Form.Handle, WM_SYSCOMMAND, SC_MINIMIZE, 0

Details:
SendMessage is a Windows API call so instead of filling this entire page with information you can look up this function in your WinAPI manual/help file. Note, this is not a function. If you need a return value , use the SendMessageAPI call in the RAPIDQ2.INC file:

returnVal = SendMessageAPI hWnd, uMsg, wParam, lParam