vertically scolling rich edit

currently I am using EM_SETSEL/EM_REPLACESEL to add new lines to a rich edit control, the problem is when the text is off the bottom of the scream the control dosen't scroll even though it has the WS_VSCROLL and ES_AUTOVSCROLL styles. What is the corect way to add a new line and make the control scroll if needed?

Post your code. It works for me with an edit control.

EDIT: It also works with a rich edit control for me.

Code:

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recv(Sock, RecvBuffer, DataLength, 0);
                               
RecvBuffer[DataLength]=0; //make sure string is null terminated
SendMessage(hEdit,  EM_SETSEL, -1, -1);
SendMessage(hEdit, EM_REPLACESEL, 0, (LPARAM)RecvBuffer);
//and add the new line characters               
SendMessage(hEdit, EM_SETSEL, -1, -1);
SendMessage(hEdit, EM_REPLACESEL, 0, (LPARAM)"\r\n");

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You can also use EM_SCROLLCARET to scroll the selection into view.

Even after using EM_SCROLLCARET ater each selection I still have the same problem. I am wondering if it is something to do with the control not having focus., would that affect EM_SCROLLCARET? Also the messages are sent from a seperate thread but I don't think this would be a problem.