Get rid of wxRA_LEFTTORIGHT and wxRA_TOPTOBOTTOM styles

This was only used in wxUniv, wxRA_SPECIFY_[COLS/ROWS] can be used instead.
Do not remove them from the definitions, to not break user code.

Closes #18100.

src/univ/radiobox.cpp

@@ -140,28 +140,8 @@ bool wxRadioBox::Create(wxWindow *parent,
                         const wxValidator& wxVALIDATOR_PARAM(val),
                         const wxString& name)
 {
-    // for compatibility with the other ports which don't handle (yet?)
-    // wxRA_LEFTTORIGHT and wxRA_TOPTOBOTTOM flags, we add them ourselves if
-    // not specified
-    if ( !(style & (wxRA_LEFTTORIGHT | wxRA_TOPTOBOTTOM)) )
-    {
-        // horizontal radiobox use left to right layout
-        if ( style & wxRA_SPECIFY_COLS )
-        {
-            style |= wxRA_LEFTTORIGHT;
-        }
-        else if ( style & wxRA_SPECIFY_ROWS )
-        {
-            style |= wxRA_TOPTOBOTTOM;
-        }
-        else
-        {
-            wxFAIL_MSG( wxT("you must specify wxRA_XXX style!") );
-
-            // use default
-            style = wxRA_SPECIFY_COLS | wxRA_LEFTTORIGHT;
-        }
-    }
+    if ( !(style & (wxRA_SPECIFY_ROWS | wxRA_SPECIFY_COLS)) )
+        style |= wxRA_SPECIFY_COLS;
 
     if ( !wxStaticBox::Create(parent, id, title, pos, size, style, name) )
         return false;
@@ -447,7 +427,7 @@ void wxRadioBox::DoMoveWindow(int x0, int y0, int width, int height)
     {
         m_buttons[n]->SetSize(x, y, sizeBtn.x, sizeBtn.y);
 
-        if ( GetWindowStyle() & wxRA_TOPTOBOTTOM )
+        if ( GetWindowStyle() & wxRA_SPECIFY_ROWS )
         {
             // from top to bottom
             if ( (n + 1) % GetRowCount() )
@@ -462,7 +442,7 @@ void wxRadioBox::DoMoveWindow(int x0, int y0, int width, int height)
                 y = y0;
             }
         }
-        else // wxRA_LEFTTORIGHT: mirror the code above
+        else // wxRA_SPECIFY_COLS: mirror the code above
         {
             // from left to right
             if ( (n + 1) % GetColumnCount() )