Re: Problem with C++ function
- From: "Tyler Littlefield" <tyler@xxxxxxxxxxxxx>
- To: <programmingblind@xxxxxxxxxxxxx>
- Date: Sat, 29 Aug 2009 10:28:03 -0600
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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