Notification msgs from rich edit control

[Charles Dietz]

I am wanting to implement a rich edit control into my application, but I have not
been able to trap notification messages from the control. The following program
demonstrates my problem. When I start typing in the control, a MSGBOX should
pop up if I have successfully trapped the %RN_UPDATE message, but it doesn't.

Thanks for any help that can be offered.

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#INCLUDE "WIN32API.INC" 
#INCLUDE "COMMCTRL.INC"
#INCLUDE "RICHEDIT.INC"

%ID_RichEdit  = 500
GLOBAL hEdit AS LONG
DECLARE CALLBACK FUNCTION dlgCallback()
DECLARE FUNCTION newEditProc&(BYVAL h&, BYVAL wMsg&, BYVAL wParm&, BYVAL lParm&)

FUNCTION PBMAIN
   LOCAL hDlg AS LONG, hRichEd AS LONG, rText AS STRING
   LoadLibrary "RICHED32.DLL"
   CALL InitCommonControls
   DIALOG NEW 0, "DDT RichEdit demo",,, 150, 90, %WS_SYSMENU TO hDlg
   CONTROL ADD "RichEdit", hDlg, %ID_RichEdit, "", 5, 20, 120, 12, _
               %WS_CHILD + %WS_VISIBLE, %WS_EX_CLIENTEDGE
   DIALOG SHOW MODAL hDlg CALL dlgCallback
END FUNCTION

CALLBACK FUNCTION dlgCallback()
   SELECT CASE CBMSG
   CASE %WM_INITDIALOG
      CONTROL HANDLE CBHNDL, %ID_RichEdit TO hEdit
      CONTROL SET FOCUS CBHNDL, %ID_RichEdit
   CASE %WM_COMMAND
      IF CBCTLMSG = %EN_UPDATE THEN
         MSGBOX "here
      END IF
   END SELECT
END FUNCTION

[Borje Hagsten]

You need to set the event mask for the richedit control after it
has been created. Add the following to PBMAIN to make it work:

CONTROL SEND hdlg, %ID_RichEdit, %EM_SETEVENTMASK, 0, %ENM_UPDATE

(Another useful one to set is %ENM_SELCHANGE, which enables you to
pick up all changes to the cursor's position in %WM_NOTIFY)

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[Charles Dietz]

Thanks Borje,

That was exactly what I needed. After I got your help, I went back into
win32.hlp, and it all became so clear and simple. This rich edit control
is a lot more obscure than the regular edit control. I can't help but
wonder how you were able to figure it all out? In any case, my hat's off
to you. Thanks again.


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[Borje Hagsten]

Glad to hear it helped. A really good source of knowledge for all common
controls is the MSDN search, at http://search.microsoft.com/us/dev/


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