allow programmatic access to start pane dragging

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@43528 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/aui/framemanager.h

@@ -476,13 +476,20 @@ public:
     void Update();
 
 public:
+
     virtual wxAuiFloatingFrame* CreateFloatingFrame(wxWindow* parent, const wxAuiPaneInfo& p);
 
-    wxRect CalculateHintRect(wxWindow* pane_window,
+    void StartPaneDrag(
+                 wxWindow* pane_window,
+                 const wxPoint& offset);
+
+    wxRect CalculateHintRect(
+                 wxWindow* pane_window,
                  const wxPoint& pt,
                  const wxPoint& offset);
                       
-    void DrawHintRect(wxWindow* pane_window,
+    void DrawHintRect(
+                 wxWindow* pane_window,
                  const wxPoint& pt,
                  const wxPoint& offset);
                       

src/aui/framemanager.cpp

@@ -3074,6 +3074,27 @@ void wxAuiManager::HideHint()
 
 
 
+void wxAuiManager::StartPaneDrag(wxWindow* pane_window,
+                                 const wxPoint& offset)
+{
+    wxAuiPaneInfo& pane = GetPane(pane_window);
+    if (!pane.IsOk())
+        return;
+    
+    if (pane.IsToolbar())
+    {
+        m_action = actionDragToolbarPane;
+    }
+     else
+    {
+        m_action = actionDragFloatingPane;
+    }
+    
+    m_action_window = pane_window;
+    m_action_offset = offset;
+    m_frame->CaptureMouse();
+}
+
 
 // CalculateHintRect() calculates the drop hint rectangle.  The method
 // first calls DoDrop() to determine the exact position the pane would
@@ -4041,9 +4062,8 @@ void wxAuiManager::OnMotion(wxMouseEvent& event)
                                                       pt.y - m_action_offset.y);
 
                     // float the window
-                    if(pane_info->IsMaximized()) {
+                    if (pane_info->IsMaximized())
                         RestorePane(*pane_info);
-                    }
                     pane_info->Float();
                     Update();