Add convenient wxST_ELLIPSIZE_MASK constant.

This is simply a combination of all 3 different wxST_ELLIPSIZE_XXX styles and
makes it simpler to test if any of them is specified.

No real changes.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@78477 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/stattext.h

@@ -26,6 +26,9 @@
 #define wxST_ELLIPSIZE_MIDDLE      0x0008
 #define wxST_ELLIPSIZE_END         0x0010
 
+#define wxST_ELLIPSIZE_MASK \
+    (wxST_ELLIPSIZE_START | wxST_ELLIPSIZE_MIDDLE | wxST_ELLIPSIZE_END)
+
 extern WXDLLIMPEXP_DATA_CORE(const char) wxStaticTextNameStr[];
 
 class WXDLLIMPEXP_CORE wxStaticTextBase : public wxControl
@@ -44,9 +47,7 @@ public:
 
     bool IsEllipsized() const
     {
-        return HasFlag(wxST_ELLIPSIZE_START) ||
-               HasFlag(wxST_ELLIPSIZE_MIDDLE) ||
-               HasFlag(wxST_ELLIPSIZE_END);
+        return (GetWindowStyle() & wxST_ELLIPSIZE_MASK) != 0;
     }
 
 protected:      // functions required for wxST_ELLIPSIZE_* support