Re: Setting cursor for a button?

"Ben Voigt [C++ MVP]" <rbv@nospam.nospam>
Fri, 15 Jun 2007 15:22:29 -0500
"Michael Bray" <> wrote in message

David Lowndes <DavidL@example.invalid> wrote in

It will do. You probably need to sub-class the button and handle
WM_SETCURSOR there rather than in the window that is the button's

Yeah I thought that might be the next logical answer.

But the problem for me there is what would I subclass? Because I'm not
using MFC, I don't know what class I would derive from - I only have what
the windows form resource designer is generating in the Resource file.
Maybe I'm just not understanding subclassing?

The other thing I tried along those lines was to re-assign the button's
WndProc using SetWindowLong as described in:

(almost at the end of the page, in the scrollable window)

That is subclassing... which is kinda like a form of inheritance for
languages without object support.

but I was unable to get the code to compile because the line:

wpOrigButtonProc = (WNDPROC) SetWindowLong(hWndBtn1,
         GWLP_WNDPROC, (LONG) NewButtonProc);

couldn't convert 'NewButtonProc' to a LONG. Perhaps someone could help me
get that to compile...

NewButtocProc can't be an instance member function (you will be passed an
HWND identifying the button, not a this pointer), so either outside a class
or else declared as a static member.


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