The default state for the first radio button in a group should be selected

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@23054 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/cocoa/radiobut.mm

@@ -71,6 +71,9 @@ bool wxRadioButton::Create(wxWindow *parent, wxWindowID winid,
     [m_cocoaNSView release];
     [GetNSButton() setButtonType: NSRadioButton];
     [GetNSButton() setTitle:wxNSStringWithWxString(label)];
+    // If it's the first in a group, it should be selected
+    if(style&wxRB_GROUP)
+        [GetNSButton() setState: NSOnState];
     [GetNSControl() sizeToFit];
 
     if(m_parent)