Re: Problem with C++ function
- From: "Ian D. Nichols" <inich@xxxxxxxxxx>
- To: <programmingblind@xxxxxxxxxxxxx>
- Date: Mon, 31 Aug 2009 14:40:16 -0400
Hi Tyler,
Thanks for your reply to my question. I thought I had found the problem when I
discovered that the function had not been declared in the same way that it had
been implemented (different return type and different parameter types). But
when I corrected that, the error message was exactly the same. There's some
problem hidden somewhere, and I'm going to have to spend a while trying to find
it.
Does anyone know whether or not the rich edit window must be a child of the
program's primary window, or could it in be the primary window.
Thanks again!
Ian
Ian D. Nichols,
Toronto, Canada
----- Original Message -----
From: Tyler Littlefield
To: programmingblind@xxxxxxxxxxxxx
Sent: Saturday, August 29, 2009 12:28 PM
Subject: Re: Problem with C++ function
this has worked for me in the past. what is your proc defined as? should just
be able to give it the address of the proc (if the procedure is already
defined).
----- Original Message -----
From: Ian D. Nichols
To: programmingblind@xxxxxxxxxxxxx
Sent: Saturday, August 29, 2009 10:13 AM
Subject: Problem with C++ function
Hi Listers,
I am trying to superimpose a RichEdit control onto the main program
window and cannot get a call to the SetWindowLong function to compile properly.
I am following an assembler example that assembles and works flawlessly, but
keep getting an error with the C++ version of it.
This assembles without error:
invoke SetWindowLong, hRichEd, GWL_WNDPROC, hEditProc
This is the C++ version:
SetWindowLong (hRichEd, GWL_WNDPROC, hEditProc);
According to a reference of Windows APIs, the 3rd parameter is of type long
and is the procedure that handles keystrokes sent to the rich edit control. If
I don't cast it the compiler complains that it cannot convert void to int. If
I cast it to (long), the compiler complains that it cannot convert long to long
(__stdcall *)(HWND__ *,unsigned int, unsigned int,long)
I don't understand the meaning of the parameter list in this error message.
Could this be a bug in the Borland compiler version 5.4, or am I just not
spotting something that's wrong.
Thanks in advance.
Ian
Ian D. Nichols,
Toronto, Canada
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