- SendMessage(GetHwnd(), BM_SETSTYLE, BS_DEFPUSHBUTTON, 1L);
+ if ( btnOldDefault )
+ {
+ // remove the BS_DEFPUSHBUTTON style from the other button
+ long style = GetWindowLong(GetHwndOf(btnOldDefault), GWL_STYLE);
+ style &= ~BS_DEFPUSHBUTTON;
+ SendMessage(GetHwndOf(btnOldDefault), BM_SETSTYLE, style, 1L);
+ }
+
+ // set this button as the default
+ long style = GetWindowLong(GetHwnd(), GWL_STYLE);
+ style |= BS_DEFPUSHBUTTON;
+ SendMessage(GetHwnd(), BM_SETSTYLE, style, 1L);