fixes #13557

[wxWidgets.git] / include / wx / event.h

diff --git a/include/wx/event.h b/include/wx/event.h
index 16f91819d96ff01390b4274f23b792bf42967121..62d3a575a06ddcd792147a9ee9bd89181aef938c 100644 (file)
--- a/include/wx/event.h
+++ b/include/wx/event.h
@@ -1244,7 +1244,7 @@ public:
     {
         // make sure our string member (which uses COW, aka refcounting) is not
         // shared by other wxString instances:
-        SetString(GetString().c_str());
+        SetString(GetString().Clone());
     }
 
     virtual wxEvent *Clone() const
@@ -1448,6 +1448,12 @@ private:
  wxEVT_RIGHT_DCLICK
 */
 
+enum wxMouseWheelAxis
+{
+    wxMOUSE_WHEEL_VERTICAL,
+    wxMOUSE_WHEEL_HORIZONTAL
+};
+
 class WXDLLIMPEXP_CORE wxMouseEvent : public wxEvent,
                                       public wxMouseState
 {
@@ -1535,10 +1541,10 @@ public:
     // should occur for each delta.
     int GetWheelDelta() const { return m_wheelDelta; }
 
-    // Gets the axis the wheel operation concerns, 0 being the y axis as on
-    // most mouse wheels, 1 is the x axis for things like MightyMouse scrolls
-    // or horizontal trackpad scrolling
-    int GetWheelAxis() const { return m_wheelAxis; }
+    // Gets the axis the wheel operation concerns; wxMOUSE_WHEEL_VERTICAL
+    // (most common case) or wxMOUSE_WHEEL_HORIZONTAL (for horizontal scrolling
+    // using e.g. a trackpad).
+    wxMouseWheelAxis GetWheelAxis() const { return m_wheelAxis; }
 
     // Returns the configured number of lines (or whatever) to be scrolled per
     // wheel action.  Defaults to one.
@@ -1560,7 +1566,7 @@ public:
 public:
     int           m_clickCount;
 
-    int           m_wheelAxis;
+    wxMouseWheelAxis m_wheelAxis;
     int           m_wheelRotation;
     int           m_wheelDelta;
     int           m_linesPerAction;
@@ -1693,10 +1699,10 @@ public:
         { return wxPoint(m_x, m_y); }
 
     // Get X position
-    wxCoord GetX() const { return m_x; }
+    wxCoord GetX() const;
 
     // Get Y position
-    wxCoord GetY() const { return m_y; }
+    wxCoord GetY() const;
 
     // Can be called from wxEVT_CHAR_HOOK handler to allow generation of normal
     // key events even though the event had been handled (by default they would
@@ -1760,6 +1766,7 @@ private:
     {
         m_x = evt.m_x;
         m_y = evt.m_y;
+        m_hasPosition = evt.m_hasPosition;
 
         m_keyCode = evt.m_keyCode;
 
@@ -1770,11 +1777,19 @@ private:
 #endif
     }
 
+    // Initialize m_x and m_y using the current mouse cursor position if
+    // necessary.
+    void InitPositionIfNecessary() const;
+
     // If this flag is true, the normal key events should still be generated
     // even if wxEVT_CHAR_HOOK had been handled. By default it is false as
     // handling wxEVT_CHAR_HOOK suppresses all the subsequent events.
     bool m_allowNext;
 
+    // If true, m_x and m_y were already initialized. If false, try to get them
+    // when they're requested.
+    bool m_hasPosition;
+
     DECLARE_DYNAMIC_CLASS(wxKeyEvent)
 };