I'm creating a message loop in plain C that interfaces to my Harbour-based project. So far, everything works just fine, except for scrollbars in dialogs which have the WS_VSCROLL style. My message loop doesn't seem to see the WM_VSCROLL message, but it does see the WM_NCLBUTTONDOWN message with the HTVSCROLL value in Msg.wParam. Anybody have any idea what I'm missing? Thanks in advance! Ron