added HasExtraStyle()

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@45587 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

docs/latex/wx/window.tex

@@ -1445,6 +1445,18 @@ Returns {\tt true} if this window has the current mouse capture.
 \helpref{wxMouseCaptureChangedEvent}{wxmousecapturechangedevent}
 
 
+\membersection{wxWindow::HasExtraStyle}\label{wxwindowhasextrastyle}
+
+\constfunc{bool}{HasExtraStyle}{\param{int }{exFlag}}
+
+Returns \texttt{true} if the window has the given \arg{exFlag} bit set in its
+extra styles.
+
+\wxheading{See also}
+
+\helpref{SetExtraStyle}{wxwindowsetextrastyle}
+
+
 \membersection{wxWindow::HasFlag}\label{wxwindowhasflag}
 
 \constfunc{bool}{HasFlag}{\param{int }{flag}}

include/wx/window.h

@@ -546,6 +546,8 @@ public:
     virtual void SetExtraStyle(long exStyle) { m_exStyle = exStyle; }
     long GetExtraStyle() const { return m_exStyle; }
 
+    bool HasExtraStyle(int exFlag) const { return (m_exStyle & exFlag) != 0; }
+
         // make the window modal (all other windows unresponsive)
     virtual void MakeModal(bool modal = true);