make wxKeyEvent and wxMouseEvent derive from the same wxKeyboardState object (indirectly via wxMouseState in the case of the latter) to make Get/HasModifiers() available in wxMouseEvent as well while avoiding code duplication

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@55745 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

interface/wx/mousestate.h

@@ -0,0 +1,71 @@
+/////////////////////////////////////////////////////////////////////////////
+// Name:        wx/mousestate.h
+// Purpose:     documentation of wxMouseState
+// Author:      wxWidgets team
+// Created:     2008-09-19
+// RCS-ID:      $Id$
+// Licence:     wxWindows license
+/////////////////////////////////////////////////////////////////////////////
+
+
+/**
+    @class wxMouseState
+
+    Represents the mouse state.
+
+    This class is used as a base class by wxMouseEvent and so its methods may
+    be used to obtain information about the mouse state for the mouse events.
+    It also inherits from wxKeyboardState and so carries information about the
+    keyboard state and not only the mouse one.
+
+    This class is implemented entirely inline in @<wx/mousestate.h@> and thus
+    has no linking requirements.
+
+    @category{misc}
+
+    @see wxGetMouseState(), wxMouseEvent
+ */
+class wxMouseState : public wxKeyboardState
+{
+public:
+    /**
+        Default constructor.
+    */
+    wxMouseState();
+
+    /**
+        Returns X coordinate of the physical mouse event position.
+    */
+    wxCoord GetX() const;
+    /**
+        Returns Y coordinate of the physical mouse event position.
+    */
+    wxCoord GetY() const;
+    /**
+        Returns the physical mouse position.
+    */
+    wxPoint GetPosition() const;
+
+    /**
+        Returns @true if the left mouse button changed to down.
+    */
+    bool LeftDown() const;
+    /**
+        Returns @true if the middle mouse button changed to down.
+    */
+    bool MiddleDown() const;
+    /**
+        Returns @true if the right mouse button changed to down.
+    */
+    bool RightDown() const;
+    /**
+        Returns @true if the first extra button mouse button changed to down.
+    */
+    bool Aux1Down() const;
+    /**
+        Returns @true if the second extra button mouse button changed to down.
+    */
+    bool Aux2Down() const;
+};
+
+