RegisterWindowMessage SendMessageTimeout ObjectFromLresult کار این توابع چیه

[m_vb66]

Private Declare Function RegisterWindowMessage Lib "user32" Alias "RegisterWindowMessageA" (ByVal lpString As String) As Long


Private Declare Function SendMessageTimeout Lib "user32" Alias "SendMessageTimeoutA" (ByVal hWnd As Long, ByVal msg As Long, ByVal wParam As Long, lParam As Any, ByVal fuFlags As Long, ByVal uTimeout As Long, lpdwResult As Long) As Long


Private Declare Function ObjectFromLresult Lib "oleacc" (ByVal lResult As Long, riid As UUID, ByVal wParam As Long, ppvObject As Any) As Long