I am using the MSACAL70 control and want to drag and drop a control on it and have the date that I drop the control on selected. I have tried to use the MOUSE CLICK AT the nXCoord and nYCoord given to me by the Drag and Drop but have had no success. I think the way to do this is with the SendMessage API. But I can't get the hwnd of the control and I know nothing about the parameters about the SendMessage API.