Simply put, I can't get this to work. When I include this button style, the button has the thick black border but once it gets and then loses focus it appears as a normal button. More importantly, IsDialogMessage isn't processing it, or atleast associating my button as the default. I've looked around a lot and had some points made to use DM_SETDEFID, but I couldn't get it to work.

I'm writing this in plain old C, so I couldn't use SetDefId in MFC. Thanks in advance.