X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/a6b7a521a4e04967ccef083eb76fbad9318cc95f..51146826fc0a0a949d88f23fb9d83fc1f1ada14e:/src/aui/framemanager.cpp

diff --git a/src/aui/framemanager.cpp b/src/aui/framemanager.cpp
index 93242053ce..7c552d9243 100644
--- a/src/aui/framemanager.cpp
+++ b/src/aui/framemanager.cpp
@@ -28,6 +28,7 @@
 #include "wx/aui/framemanager.h"
 #include "wx/aui/dockart.h"
 #include "wx/aui/floatpane.h"
+#include "wx/aui/tabmdi.h"
 
 #ifndef WX_PRECOMP
     #include "wx/panel.h"
@@ -151,7 +152,7 @@ public:
             wxRect rect(upd.GetRect());
             dc.DrawRectangle(rect.x, rect.y, rect.width, rect.height);
 
-            upd++;
+            ++upd;
         }
     }
 
@@ -501,7 +502,8 @@ wxAuiManager::wxAuiManager(wxWindow* managed_wnd, unsigned int flags)
     m_frame = NULL;
     m_dock_constraint_x = 0.3;
     m_dock_constraint_y = 0.3;
-    
+    m_reserved = NULL;
+
     if (managed_wnd)
     {
         SetManagedWindow(managed_wnd);
@@ -510,6 +512,13 @@ wxAuiManager::wxAuiManager(wxWindow* managed_wnd, unsigned int flags)
 
 wxAuiManager::~wxAuiManager()
 {
+    for ( size_t i = 0; i < m_panes.size(); i++ )
+    {
+        wxAuiPaneInfo& pinfo = m_panes[i];
+        if (pinfo.window && !pinfo.window->GetParent())
+            delete pinfo.window;
+    }
+
     delete m_art;
 }
 
@@ -520,6 +529,13 @@ wxAuiFloatingFrame* wxAuiManager::CreateFloatingFrame(wxWindow* parent,
     return new wxAuiFloatingFrame(parent, this, pane_info);
 }
 
+bool wxAuiManager::CanDockPanel(const wxAuiPaneInfo & WXUNUSED(p))
+{
+    // if a key modifier is pressed while dragging the frame,
+    // don't dock the window
+    return !(wxGetKeyState(WXK_CONTROL) || wxGetKeyState(WXK_ALT));
+}
+
 // GetPane() looks up a wxAuiPaneInfo structure based
 // on the supplied window pointer.  Upon failure, GetPane()
 // returns an empty wxAuiPaneInfo, a condition which can be checked
@@ -611,7 +627,7 @@ void wxAuiManager::SetFlags(unsigned int flags)
 
     // set the new flags
     m_flags = flags;
-    
+
     if (update_hint_wnd)
     {
         UpdateHintWindowConfig();
@@ -649,7 +665,7 @@ wxAuiManager* wxAuiManager::GetManager(wxWindow* window)
     evt.ResumePropagation(wxEVENT_PROPAGATE_MAX);
     if (!window->ProcessEvent(evt))
         return NULL;
-        
+
     return evt.GetManager();
 }
 
@@ -658,7 +674,7 @@ void wxAuiManager::UpdateHintWindowConfig()
 {
     // find out if the the system can do transparent frames
     bool can_do_transparent = false;
-    
+
     wxWindow* w = m_frame;
     while (w)
     {
@@ -668,10 +684,10 @@ void wxAuiManager::UpdateHintWindowConfig()
             can_do_transparent = f->CanSetTransparent();
             break;
         }
-        
+
         w = w->GetParent();
     }
-    
+
     // if there is an existing hint window, delete it
     if (m_hint_wnd)
     {
@@ -681,9 +697,9 @@ void wxAuiManager::UpdateHintWindowConfig()
 
     m_hint_fademax = 50;
     m_hint_wnd = NULL;
-    
+
     if ((m_flags & wxAUI_MGR_TRANSPARENT_HINT) && can_do_transparent)
-    { 
+    {
         // Make a window to use for a transparent hint
         #if defined(__WXMSW__) || defined(__WXGTK__)
             m_hint_wnd = new wxFrame(m_frame, wxID_ANY, wxEmptyString,
@@ -711,9 +727,9 @@ void wxAuiManager::UpdateHintWindowConfig()
             // blue.
             p->SetBackgroundColour(*wxBLUE);
         #endif
-        
+
     }
-     else
+    else
     {
         if ((m_flags & wxAUI_MGR_TRANSPARENT_HINT) != 0 ||
             (m_flags & wxAUI_MGR_VENETIAN_BLINDS_HINT) != 0)
@@ -761,6 +777,17 @@ void wxAuiManager::SetManagedWindow(wxWindow* wnd)
                 wxAuiPaneInfo().Name(wxT("mdiclient")).
                 CenterPane().PaneBorder(false));
     }
+    else if (m_frame->IsKindOf(CLASSINFO(wxAuiMDIParentFrame)))
+    {
+        wxAuiMDIParentFrame* mdi_frame = (wxAuiMDIParentFrame*)m_frame;
+        wxAuiMDIClientWindow* client_window = mdi_frame->GetClientWindow();
+        wxASSERT_MSG(client_window, wxT("Client window is NULL!"));
+
+        AddPane(client_window,
+                wxAuiPaneInfo().Name(wxT("mdiclient")).
+                CenterPane().PaneBorder(false));
+    }
+
 #endif
 
     UpdateHintWindowConfig();
@@ -871,14 +898,14 @@ bool wxAuiManager::AddPane(wxWindow* window, const wxAuiPaneInfo& pane_info)
         button.button_id = wxAUI_BUTTON_MAXIMIZE_RESTORE;
         pinfo.buttons.Add(button);
     }
-    
+
     if (pinfo.HasPinButton())
     {
         wxAuiPaneButton button;
         button.button_id = wxAUI_BUTTON_PIN;
         pinfo.buttons.Add(button);
     }
-    
+
     if (pinfo.HasCloseButton())
     {
         wxAuiPaneButton button;
@@ -903,7 +930,8 @@ bool wxAuiManager::AddPane(wxWindow* window, const wxAuiPaneInfo& pane_info)
             // I believe this to be the correct action, until
             // wxToolBar::GetBestSize() is fixed.  Is this assumption
             // correct?
-            pinfo.best_size.y++;
+            // commented out by JACS 2007-9-08 after having added a pixel in wxMSW's wxToolBar::DoGetBestSize()
+            // pinfo.best_size.y++;
         }
 
         if (pinfo.min_size != wxDefaultSize)
@@ -919,8 +947,8 @@ bool wxAuiManager::AddPane(wxWindow* window, const wxAuiPaneInfo& pane_info)
 }
 
 bool wxAuiManager::AddPane(wxWindow* window,
-                             int direction,
-                             const wxString& caption)
+                           int direction,
+                           const wxString& caption)
 {
     wxAuiPaneInfo pinfo;
     pinfo.Caption(caption);
@@ -936,8 +964,8 @@ bool wxAuiManager::AddPane(wxWindow* window,
 }
 
 bool wxAuiManager::AddPane(wxWindow* window,
-                             const wxAuiPaneInfo& pane_info,
-                             const wxPoint& drop_pos)
+                           const wxAuiPaneInfo& pane_info,
+                           const wxPoint& drop_pos)
 {
     if (!AddPane(window, pane_info))
         return false;
@@ -982,7 +1010,7 @@ bool wxAuiManager::InsertPane(wxWindow* window, const wxAuiPaneInfo& pane_info,
     {
         return AddPane(window, pane_info);
     }
-     else
+    else
     {
         if (pane_info.IsFloating())
         {
@@ -992,7 +1020,7 @@ bool wxAuiManager::InsertPane(wxWindow* window, const wxAuiPaneInfo& pane_info,
             if (pane_info.floating_size != wxDefaultSize)
                 existing_pane.FloatingSize(pane_info.floating_size);
         }
-         else
+        else
         {
             // if the new pane is docked then we should undo maximize
             RestoreMaximizedPane();
@@ -1034,7 +1062,7 @@ bool wxAuiManager::DetachPane(wxWindow* window)
                 {
                     m_action_window = NULL;
                 }
-                
+
                 p.window->Reparent(m_frame);
                 p.frame->SetSizer(NULL);
                 p.frame->Destroy();
@@ -1065,8 +1093,7 @@ bool wxAuiManager::DetachPane(wxWindow* window)
     return false;
 }
 
-// ClosePane() destroys or hides the pane depending on its
-// flags
+// ClosePane() destroys or hides the pane depending on its flags
 void wxAuiManager::ClosePane(wxAuiPaneInfo& pane_info)
 {
     // if we were maximized, restore
@@ -1095,7 +1122,7 @@ void wxAuiManager::ClosePane(wxAuiPaneInfo& pane_info)
     }
 
     // now we need to either destroy or hide the pane
-    if (pane_info.IsDestroyOnClose()) 
+    if (pane_info.IsDestroyOnClose())
     {
         wxWindow * window = pane_info.window;
         DetachPane(window);
@@ -1103,8 +1130,8 @@ void wxAuiManager::ClosePane(wxAuiPaneInfo& pane_info)
         {
             window->Destroy();
         }
-    } 
-    else 
+    }
+    else
     {
         pane_info.Hide();
     }
@@ -1121,7 +1148,13 @@ void wxAuiManager::MaximizePane(wxAuiPaneInfo& pane_info)
         if (!p.IsToolbar())
         {
             p.Restore();
-            p.SaveHidden();
+
+            // save hidden state
+            p.SetFlag(wxAuiPaneInfo::savedHiddenState,
+                      p.HasFlag(wxAuiPaneInfo::optionHidden));
+
+            // hide the pane, because only the newly
+            // maximized pane should show
             p.Hide();
         }
     }
@@ -1148,7 +1181,8 @@ void wxAuiManager::RestorePane(wxAuiPaneInfo& pane_info)
         wxAuiPaneInfo& p = m_panes.Item(i);
         if (!p.IsToolbar())
         {
-            p.RestoreHidden();
+            p.SetFlag(wxAuiPaneInfo::optionHidden,
+                      p.HasFlag(wxAuiPaneInfo::savedHiddenState));
         }
     }
 
@@ -1313,7 +1347,7 @@ wxString wxAuiManager::SavePerspective()
 {
     wxString result;
     result.Alloc(500);
-    result = wxT("layout1|");
+    result = wxT("layout2|");
 
     int pane_i, pane_count = m_panes.GetCount();
     for (pane_i = 0; pane_i < pane_count; ++pane_i)
@@ -1344,11 +1378,13 @@ bool wxAuiManager::LoadPerspective(const wxString& layout, bool update)
     wxString part;
 
     // check layout string version
+    //    'layout1' = wxAUI 0.9.0 - wxAUI 0.9.2
+    //    'layout2' = wxAUI 0.9.2 (wxWidgets 2.8)
     part = input.BeforeFirst(wxT('|'));
     input = input.AfterFirst(wxT('|'));
     part.Trim(true);
     part.Trim(false);
-    if (part != wxT("layout1"))
+    if (part != wxT("layout2"))
         return false;
 
     // mark all panes currently managed as docked and hidden
@@ -1410,12 +1446,11 @@ bool wxAuiManager::LoadPerspective(const wxString& layout, bool update)
         if (!p.IsOk())
         {
             // the pane window couldn't be found
-            // in the existing layout
-            return false;
+            // in the existing layout -- skip it
+            continue;
         }
 
         p.SafeSet(pane);
-
     }
 
     if (update)
@@ -1468,7 +1503,7 @@ void wxAuiManager::GetPanePositionsAndSizes(wxAuiDockInfo& dock,
                 size += gripper_size;
             size += pane.best_size.x;
         }
-         else
+        else
         {
             if (pane.HasGripper() && pane.HasGripperTop())
                 size += gripper_size;
@@ -1493,7 +1528,7 @@ void wxAuiManager::GetPanePositionsAndSizes(wxAuiDockInfo& dock,
 
         if (amount >= 0)
             offset += amount;
-             else
+        else
             positions[pane_i] -= -amount;
 
         offset += sizes[pane_i];
@@ -1507,7 +1542,7 @@ void wxAuiManager::GetPanePositionsAndSizes(wxAuiDockInfo& dock,
         int amount = positions[pane_i] - offset;
         if (amount >= 0)
             offset += amount;
-             else
+        else
             positions[pane_i] += -amount;
 
         offset += sizes[pane_i];
@@ -1516,10 +1551,10 @@ void wxAuiManager::GetPanePositionsAndSizes(wxAuiDockInfo& dock,
 
 
 void wxAuiManager::LayoutAddPane(wxSizer* cont,
-                                   wxAuiDockInfo& dock,
-                                   wxAuiPaneInfo& pane,
-                                   wxAuiDockUIPartArray& uiparts,
-                                   bool spacer_only)
+                                 wxAuiDockInfo& dock,
+                                 wxAuiPaneInfo& pane,
+                                 wxAuiDockUIPartArray& uiparts,
+                                 bool spacer_only)
 {
     wxAuiDockUIPart part;
     wxSizerItem* sizer_item;
@@ -1534,7 +1569,7 @@ void wxAuiManager::LayoutAddPane(wxSizer* cont,
     int orientation;
     if (dock.IsHorizontal())
         orientation = wxHORIZONTAL;
-         else
+    else
         orientation = wxVERTICAL;
 
     // this variable will store the proportion
@@ -1598,7 +1633,7 @@ void wxAuiManager::LayoutAddPane(wxSizer* cont,
             part.sizer_item = sizer_item;
             uiparts.Add(part);
         }
-        
+
         // if we have buttons, add a little space to the right
         // of them to ease visual crowding
         if (button_count >= 1)
@@ -1637,7 +1672,7 @@ void wxAuiManager::LayoutAddPane(wxSizer* cont,
 
 
     // determine if the pane should have a minimum size; if the pane is
-    // non-resizable (fixed) then we must set a minimum size. Alternitavely,
+    // non-resizable (fixed) then we must set a minimum size. Alternatively,
     // if the pane.min_size is set, we must use that value as well
 
     wxSize min_size = pane.min_size;
@@ -1679,7 +1714,7 @@ void wxAuiManager::LayoutAddPane(wxSizer* cont,
         part.sizer_item = sizer_item;
         uiparts.Add(part);
     }
-     else
+    else
     {
         sizer_item = cont->Add(horz_pane_sizer, pane_proportion, wxEXPAND);
     }
@@ -1732,7 +1767,7 @@ void wxAuiManager::LayoutAddDock(wxSizer* cont,
         {
             wxAuiPaneInfo& pane = *(dock.panes.Item(pane_i));
             int pane_pos = pane_positions.Item(pane_i);
-            
+
             if (pane.IsMaximized())
                 has_maximized_pane = true;
 
@@ -1742,7 +1777,7 @@ void wxAuiManager::LayoutAddDock(wxSizer* cont,
             {
                 if (dock.IsVertical())
                     sizer_item = dock_sizer->Add(1, amount, 0, wxEXPAND);
-                     else
+                else
                     sizer_item = dock_sizer->Add(amount, 1, 0, wxEXPAND);
 
                 part.type = wxAuiDockUIPart::typeBackground;
@@ -1779,7 +1814,7 @@ void wxAuiManager::LayoutAddDock(wxSizer* cont,
         for (pane_i = 0; pane_i < pane_count; ++pane_i)
         {
             wxAuiPaneInfo& pane = *(dock.panes.Item(pane_i));
-            
+
             if (pane.IsMaximized())
                 has_maximized_pane = true;
 
@@ -1805,7 +1840,7 @@ void wxAuiManager::LayoutAddDock(wxSizer* cont,
 
     if (dock.dock_direction == wxAUI_DOCK_CENTER || has_maximized_pane)
         sizer_item = cont->Add(dock_sizer, 1, wxEXPAND);
-         else
+    else
         sizer_item = cont->Add(dock_sizer, 0, wxEXPAND);
 
     part.type = wxAuiDockUIPart::typeDock;
@@ -1819,7 +1854,7 @@ void wxAuiManager::LayoutAddDock(wxSizer* cont,
 
     if (dock.IsHorizontal())
         cont->SetItemMinSize(dock_sizer, 0, dock.size);
-         else
+    else
         cont->SetItemMinSize(dock_sizer, dock.size, 0);
 
     //  top and left docks have a sash after them
@@ -1842,9 +1877,9 @@ void wxAuiManager::LayoutAddDock(wxSizer* cont,
 }
 
 wxSizer* wxAuiManager::LayoutAll(wxAuiPaneInfoArray& panes,
-                                   wxAuiDockInfoArray& docks,
-                                   wxAuiDockUIPartArray& uiparts,
-                                   bool spacer_only)
+                                 wxAuiDockInfoArray& docks,
+                                 wxAuiDockUIPartArray& uiparts,
+                                 bool spacer_only)
 {
     wxBoxSizer* container = new wxBoxSizer(wxVERTICAL);
 
@@ -1856,7 +1891,19 @@ wxSizer* wxAuiManager::LayoutAll(wxAuiPaneInfoArray& panes,
 
     // empty all docks out
     for (i = 0, dock_count = docks.GetCount(); i < dock_count; ++i)
-        docks.Item(i).panes.Empty();
+    {
+        wxAuiDockInfo& dock = docks.Item(i);
+
+        // empty out all panes, as they will be readded below
+        dock.panes.Empty();
+
+        if (dock.fixed)
+        {
+            // always reset fixed docks' sizes, because
+            // the contained windows may have been resized
+            dock.size = 0;
+        }
+    }
 
 
     // iterate through all known panes, filing each
@@ -1877,7 +1924,7 @@ wxSizer* wxAuiManager::LayoutAll(wxAuiPaneInfoArray& panes,
             // found the right dock
             dock = arr.Item(0);
         }
-         else
+        else
         {
             // dock was not found, so we need to create a new one
             wxAuiDockInfo d;
@@ -1899,7 +1946,7 @@ wxSizer* wxAuiManager::LayoutAll(wxAuiPaneInfoArray& panes,
             if (!FindPaneInDock(*dock, p.window))
                 dock->panes.Add(&p);
         }
-         else
+        else
         {
             // remove the pane from any existing docks
             RemovePaneFromDocks(docks, p);
@@ -1940,7 +1987,7 @@ wxSizer* wxAuiManager::LayoutAll(wxAuiPaneInfoArray& panes,
 
                 if (dock.IsHorizontal())
                     size = wxMax(pane_size.y, size);
-                     else
+                else
                     size = wxMax(pane_size.x, size);
             }
 
@@ -1972,19 +2019,19 @@ wxSizer* wxAuiManager::LayoutAll(wxAuiPaneInfoArray& panes,
 
             // new dock's size may not be more than the dock constraint
             // parameter specifies.  See SetDockSizeConstraint()
-            
+
             int max_dock_x_size = (int)(m_dock_constraint_x * ((double)cli_size.x));
             int max_dock_y_size = (int)(m_dock_constraint_y * ((double)cli_size.y));
-            
+
             if (dock.IsHorizontal())
                 size = wxMin(size, max_dock_y_size);
-                 else
+            else
                 size = wxMin(size, max_dock_x_size);
 
             // absolute minimum size for a dock is 10 pixels
             if (size < 10)
                 size = 10;
-                
+
             dock.size = size;
         }
 
@@ -2007,7 +2054,7 @@ wxSizer* wxAuiManager::LayoutAll(wxAuiPaneInfoArray& panes,
                     if (pane.min_size.y > dock_min_size)
                         dock_min_size = pane.min_size.y;
                 }
-                 else
+                else
                 {
                     if (pane.min_size.x > dock_min_size)
                         dock_min_size = pane.min_size.x;
@@ -2041,6 +2088,8 @@ wxSizer* wxAuiManager::LayoutAll(wxAuiPaneInfoArray& panes,
                 dock.fixed = false;
             if (!pane.IsToolbar())
                 dock.toolbar = false;
+            if (pane.HasFlag(wxAuiPaneInfo::optionDockFixed))
+                dock.fixed = true;
             if (pane.state & wxAuiPaneInfo::actionPane)
                 action_pane_marked = true;
         }
@@ -2076,7 +2125,7 @@ wxSizer* wxAuiManager::LayoutAll(wxAuiPaneInfoArray& panes,
                 int amount = pane.dock_pos - offset;
                 if (amount >= 0)
                     offset += amount;
-                     else
+                else
                     pane.dock_pos += -amount;
 
                 offset += pane_sizes[j];
@@ -2153,7 +2202,7 @@ wxSizer* wxAuiManager::LayoutAll(wxAuiPaneInfoArray& panes,
                 for (row = 0,row_count = arr.GetCount(); row<row_count; ++row)
                    LayoutAddDock(middle, *arr.Item(row), uiparts, spacer_only);
             }
-             else if (!m_has_maximized)
+            else if (!m_has_maximized)
             {
                 // there are no center docks, add a background area
                 wxSizerItem* sizer_item = middle->Add(1,1, 1, wxEXPAND);
@@ -2167,7 +2216,7 @@ wxSizer* wxAuiManager::LayoutAll(wxAuiPaneInfoArray& panes,
                 uiparts.Add(part);
             }
         }
-         else
+        else
         {
             middle->Add(old_cont, 1, wxEXPAND);
         }
@@ -2231,7 +2280,7 @@ void wxAuiManager::GetDockSizeConstraint(double* width_pct, double* height_pct)
 {
     if (width_pct)
         *width_pct = m_dock_constraint_x;
-    
+
     if (height_pct)
         *height_pct = m_dock_constraint_y;
 }
@@ -2244,6 +2293,8 @@ void wxAuiManager::GetDockSizeConstraint(double* width_pct, double* height_pct)
 
 void wxAuiManager::Update()
 {
+    m_hover_button = NULL;
+
     wxSizer* sizer;
     int i, pane_count = m_panes.GetCount();
 
@@ -2263,21 +2314,21 @@ void wxAuiManager::Update()
             p.window->SetSize(1,1);
 
 
-	        // the following block is a workaround for bug #1531361
-	        // (see wxWidgets sourceforge page).  On wxGTK (only), when
-	        // a frame is shown/hidden, a move event unfortunately
-	        // also gets fired.  Because we may be dragging around
-	        // a pane, we need to cancel that action here to prevent
-	        // a spurious crash.
-	        if (m_action_window == p.frame)
-	        {
-		        if (wxWindow::GetCapture() == m_frame)
+            // the following block is a workaround for bug #1531361
+            // (see wxWidgets sourceforge page).  On wxGTK (only), when
+            // a frame is shown/hidden, a move event unfortunately
+            // also gets fired.  Because we may be dragging around
+            // a pane, we need to cancel that action here to prevent
+            // a spurious crash.
+            if (m_action_window == p.frame)
+            {
+                if (wxWindow::GetCapture() == m_frame)
                     m_frame->ReleaseMouse();
                 m_action = actionNone;
-		        m_action_window = NULL;
-	        }
+                m_action_window = NULL;
+            }
 
-	        // hide the frame
+            // hide the frame
             if (p.frame->IsShown())
                 p.frame->Show(false);
 
@@ -2286,7 +2337,7 @@ void wxAuiManager::Update()
             {
                 m_action_window = NULL;
             }
-            
+
             p.window->Reparent(m_frame);
             p.frame->SetSizer(NULL);
             p.frame->Destroy();
@@ -2328,11 +2379,11 @@ void wxAuiManager::Update()
                 if (p.IsShown() && !frame->IsShown())
                     frame->Show();
             }
-             else
+            else
             {
                 // frame already exists, make sure it's position
                 // and size reflect the information in wxAuiPaneInfo
-                if (p.frame->GetPosition() != p.floating_pos)
+                if ((p.frame->GetPosition() != p.floating_pos) || (p.frame->GetSize() != p.floating_size))
                 {
                     p.frame->SetSize(p.floating_pos.x, p.floating_pos.y,
                                      p.floating_size.x, p.floating_size.y,
@@ -2349,7 +2400,7 @@ void wxAuiManager::Update()
                     p.frame->Show(p.IsShown());
             }
         }
-         else
+        else
         {
             if (p.window->IsShown() != p.IsShown())
                 p.window->Show(p.IsShown());
@@ -2552,7 +2603,7 @@ int wxAuiManager::GetDockPixelOffset(wxAuiPaneInfo& test)
         {
             if (dock.IsVertical())
                 return dock.rect.y;
-                 else
+            else
                 return dock.rect.x;
         }
     }
@@ -2567,7 +2618,7 @@ int wxAuiManager::GetDockPixelOffset(wxAuiPaneInfo& test)
 // the target info.  If the operation was allowed, the function returns true.
 
 bool wxAuiManager::ProcessDockResult(wxAuiPaneInfo& target,
-                              const wxAuiPaneInfo& new_pos)
+                                     const wxAuiPaneInfo& new_pos)
 {
     bool allowed = false;
     switch (new_pos.dock_direction)
@@ -2628,10 +2679,10 @@ bool wxAuiManager::DoDrop(wxAuiDockInfoArray& docks,
         int new_layer = wxMax(wxMax(GetMaxLayer(docks, wxAUI_DOCK_LEFT),
                                 GetMaxLayer(docks, wxAUI_DOCK_BOTTOM)),
                                 GetMaxLayer(docks, wxAUI_DOCK_TOP)) + 1;
-                                
+
         if (drop.IsToolbar())
             new_layer = auiToolBarLayer;
-            
+
         drop.Dock().Left().
              Layer(new_layer).
              Row(0).
@@ -2644,10 +2695,10 @@ bool wxAuiManager::DoDrop(wxAuiDockInfoArray& docks,
         int new_layer = wxMax(wxMax(GetMaxLayer(docks, wxAUI_DOCK_TOP),
                                 GetMaxLayer(docks, wxAUI_DOCK_LEFT)),
                                 GetMaxLayer(docks, wxAUI_DOCK_RIGHT)) + 1;
-                                
+
         if (drop.IsToolbar())
             new_layer = auiToolBarLayer;
-            
+
         drop.Dock().Top().
              Layer(new_layer).
              Row(0).
@@ -2659,11 +2710,11 @@ bool wxAuiManager::DoDrop(wxAuiDockInfoArray& docks,
     {
         int new_layer = wxMax(wxMax(GetMaxLayer(docks, wxAUI_DOCK_RIGHT),
                                 GetMaxLayer(docks, wxAUI_DOCK_TOP)),
-                                GetMaxLayer(docks, wxAUI_DOCK_BOTTOM)) + 1; 
-                                
+                                GetMaxLayer(docks, wxAUI_DOCK_BOTTOM)) + 1;
+
         if (drop.IsToolbar())
             new_layer = auiToolBarLayer;
-            
+
         drop.Dock().Right().
              Layer(new_layer).
              Row(0).
@@ -2676,10 +2727,10 @@ bool wxAuiManager::DoDrop(wxAuiDockInfoArray& docks,
         int new_layer = wxMax( wxMax( GetMaxLayer(docks, wxAUI_DOCK_BOTTOM),
                                       GetMaxLayer(docks, wxAUI_DOCK_LEFT)),
                                       GetMaxLayer(docks, wxAUI_DOCK_RIGHT)) + 1;
-                                
+
         if (drop.IsToolbar())
             new_layer = auiToolBarLayer;
-            
+
         drop.Dock().Bottom().
              Layer(new_layer).
              Row(0).
@@ -2701,7 +2752,7 @@ bool wxAuiManager::DoDrop(wxAuiDockInfoArray& docks,
         int dock_drop_offset = 0;
         if (part->dock->IsHorizontal())
             dock_drop_offset = pt.x - part->dock->rect.x - offset.x;
-             else
+        else
             dock_drop_offset = pt.y - part->dock->rect.y - offset.y;
 
 
@@ -2733,16 +2784,11 @@ bool wxAuiManager::DoDrop(wxAuiDockInfoArray& docks,
 
             return ProcessDockResult(target, drop);
         }
-        else
-        {
-            m_skipping = false;
-        }
 
-        if (!m_skipping)
-        {
-            m_last_rect = part->dock->rect;
-            m_last_rect.Inflate( 15, 15 );
-        }
+        m_skipping = false;
+
+        m_last_rect = part->dock->rect;
+        m_last_rect.Inflate( 15, 15 );
 
         drop.Dock().
              Direction(part->dock->dock_direction).
@@ -2920,23 +2966,19 @@ bool wxAuiManager::DoDrop(wxAuiDockInfoArray& docks,
 
                 insert_layer = 0;
                 insert_dock_row = true;
-                if (pt.x >= part->rect.x &&
-                    pt.x < part->rect.x+new_row_pixels_x)
-                        insert_dir = wxAUI_DOCK_LEFT;
-                 else
-                if (pt.y >= part->rect.y &&
-                    pt.y < part->rect.y+new_row_pixels_y)
-                        insert_dir = wxAUI_DOCK_TOP;
-                 else
-                if (pt.x >= part->rect.x + part->rect.width-new_row_pixels_x &&
-                    pt.x < part->rect.x + part->rect.width)
-                        insert_dir = wxAUI_DOCK_RIGHT;
-                 else
-                if (pt.y >= part->rect.y+ part->rect.height-new_row_pixels_y &&
-                    pt.y < part->rect.y + part->rect.height)
-                        insert_dir = wxAUI_DOCK_BOTTOM;
-                 else
-                return false;
+                const wxRect& pr = part->rect;
+                if (pt.x >= pr.x && pt.x < pr.x + new_row_pixels_x)
+                    insert_dir = wxAUI_DOCK_LEFT;
+                else if (pt.y >= pr.y && pt.y < pr.y + new_row_pixels_y)
+                    insert_dir = wxAUI_DOCK_TOP;
+                else if (pt.x >= pr.x + pr.width - new_row_pixels_x &&
+                         pt.x < pr.x + pr.width)
+                    insert_dir = wxAUI_DOCK_RIGHT;
+                else if (pt.y >= pr.y+ pr.height - new_row_pixels_y &&
+                         pt.y < pr.y + pr.height)
+                    insert_dir = wxAUI_DOCK_BOTTOM;
+                else
+                    return false;
 
                 insert_row = GetMaxRow(panes, insert_dir, insert_layer) + 1;
             }
@@ -2962,7 +3004,7 @@ bool wxAuiManager::DoDrop(wxAuiDockInfoArray& docks,
             offset = pt.y - part->rect.y;
             size = part->rect.GetHeight();
         }
-         else
+        else
         {
             offset = pt.x - part->rect.x;
             size = part->rect.GetWidth();
@@ -3028,7 +3070,7 @@ void wxAuiManager::ShowHint(const wxRect& rect)
         m_last_hint = rect;
 
         m_hint_fadeamt = m_hint_fademax;
-        
+
         if ((m_flags & wxAUI_MGR_HINT_FADE)
             && !((m_hint_wnd->IsKindOf(CLASSINFO(wxPseudoTransparentFrame))) &&
                  (m_flags & wxAUI_MGR_NO_VENETIAN_BLINDS_FADE))
@@ -3036,6 +3078,7 @@ void wxAuiManager::ShowHint(const wxRect& rect)
             m_hint_fadeamt = 0;
 
         m_hint_wnd->SetSize(rect);
+        m_hint_wnd->SetTransparent(m_hint_fadeamt);
 
         if (!m_hint_wnd->IsShown())
             m_hint_wnd->Show();
@@ -3045,7 +3088,6 @@ void wxAuiManager::ShowHint(const wxRect& rect)
         if (m_action == actionDragFloatingPane && m_action_window)
             m_action_window->SetFocus();
 
-        m_hint_wnd->SetTransparent(m_hint_fadeamt);
         m_hint_wnd->Raise();
 
 
@@ -3056,11 +3098,11 @@ void wxAuiManager::ShowHint(const wxRect& rect)
             m_hint_fadetimer.Start(5);
         }
     }
-     else  // Not using a transparent hint window...
+    else  // Not using a transparent hint window...
     {
         if (!(m_flags & wxAUI_MGR_RECTANGLE_HINT))
             return;
-            
+
         if (m_last_hint != rect)
         {
             // remove the last hint rectangle
@@ -3142,16 +3184,16 @@ void wxAuiManager::StartPaneDrag(wxWindow* pane_window,
     wxAuiPaneInfo& pane = GetPane(pane_window);
     if (!pane.IsOk())
         return;
-    
+
     if (pane.IsToolbar())
     {
         m_action = actionDragToolbarPane;
     }
-     else
+    else
     {
         m_action = actionDragFloatingPane;
     }
-    
+
     m_action_window = pane_window;
     m_action_offset = offset;
     m_frame->CaptureMouse();
@@ -3184,6 +3226,7 @@ wxRect wxAuiManager::CalculateHintRect(wxWindow* pane_window,
     wxAuiDockUIPartArray uiparts;
     wxAuiPaneInfo hint = GetPane(pane_window);
     hint.name = wxT("__HINT__");
+    hint.PaneBorder(true);
     hint.Show();
 
     if (!hint.IsOk())
@@ -3240,6 +3283,12 @@ wxRect wxAuiManager::CalculateHintRect(wxWindow* pane_window,
     // actually show the hint rectangle on the screen
     m_frame->ClientToScreen(&rect.x, &rect.y);
 
+    if ( m_frame->GetLayoutDirection() == wxLayout_RightToLeft )
+    {
+        // Mirror rectangle in RTL mode
+        rect.x -= rect.GetWidth();
+    }
+
     return rect;
 }
 
@@ -3252,12 +3301,12 @@ void wxAuiManager::DrawHintRect(wxWindow* pane_window,
                                 const wxPoint& offset)
 {
     wxRect rect = CalculateHintRect(pane_window, pt, offset);
-    
+
     if (rect.IsEmpty())
     {
         HideHint();
     }
-     else
+    else
     {
         ShowHint(rect);
     }
@@ -3291,22 +3340,22 @@ void wxAuiManager::OnFloatingPaneMoving(wxWindow* wnd, wxDirection dir)
         pt.y = pos.y;
         // and some more pixels for the title bar
         pt.y -= 5;
-    } else
-    if (dir == wxWEST)
+    }
+    else if (dir == wxWEST)
     {
         // move to pane's left border
         wxPoint pos( 0,0 );
         pos = wnd->ClientToScreen( pos );
         pt.x = pos.x;
-    } else
-    if (dir == wxEAST)
+    }
+    else if (dir == wxEAST)
     {
         // move to pane's right border
         wxPoint pos( wnd->GetSize().x, 0 );
         pos = wnd->ClientToScreen( pos );
         pt.x = pos.x;
-    } else
-    if (dir == wxSOUTH)
+    }
+    else if (dir == wxSOUTH)
     {
         // move to pane's bottom border
         wxPoint pos( 0, wnd->GetSize().y );
@@ -3327,27 +3376,24 @@ void wxAuiManager::OnFloatingPaneMoving(wxWindow* wnd, wxDirection dir)
     // no hint for toolbar floating windows
     if (pane.IsToolbar() && m_action == actionDragFloatingPane)
     {
-        if (m_action == actionDragFloatingPane)
-        {
-            wxAuiDockInfoArray docks;
-            wxAuiPaneInfoArray panes;
-            wxAuiDockUIPartArray uiparts;
-            wxAuiPaneInfo hint = pane;
+        wxAuiDockInfoArray docks;
+        wxAuiPaneInfoArray panes;
+        wxAuiDockUIPartArray uiparts;
+        wxAuiPaneInfo hint = pane;
 
-            CopyDocksAndPanes(docks, panes, m_docks, m_panes);
+        CopyDocksAndPanes(docks, panes, m_docks, m_panes);
 
-            // find out where the new pane would be
-            if (!DoDrop(docks, panes, hint, client_pt))
-                return;
-            if (hint.IsFloating())
-                return;
+        // find out where the new pane would be
+        if (!DoDrop(docks, panes, hint, client_pt))
+            return;
+        if (hint.IsFloating())
+            return;
 
-            pane = hint;
-            m_action = actionDragToolbarPane;
-            m_action_window = pane.window;
+        pane = hint;
+        m_action = actionDragToolbarPane;
+        m_action_window = pane.window;
 
-            Update();
-        }
+        Update();
 
         return;
     }
@@ -3355,7 +3401,7 @@ void wxAuiManager::OnFloatingPaneMoving(wxWindow* wnd, wxDirection dir)
 
     // if a key modifier is pressed while dragging the frame,
     // don't dock the window
-    if (wxGetKeyState(WXK_CONTROL) || wxGetKeyState(WXK_ALT))
+    if (!CanDockPanel(pane))
     {
         HideHint();
         return;
@@ -3394,22 +3440,22 @@ void wxAuiManager::OnFloatingPaneMoved(wxWindow* wnd, wxDirection dir)
         pt.y = pos.y;
         // and some more pixels for the title bar
         pt.y -= 10;
-    } else
-    if (dir == wxWEST)
+    }
+    else if (dir == wxWEST)
     {
         // move to pane's left border
         wxPoint pos( 0,0 );
         pos = wnd->ClientToScreen( pos );
         pt.x = pos.x;
-    } else
-    if (dir == wxEAST)
+    }
+    else if (dir == wxEAST)
     {
         // move to pane's right border
         wxPoint pos( wnd->GetSize().x, 0 );
         pos = wnd->ClientToScreen( pos );
         pt.x = pos.x;
-    } else
-    if (dir == wxSOUTH)
+    }
+    else if (dir == wxSOUTH)
     {
         // move to pane's bottom border
         wxPoint pos( 0, wnd->GetSize().y );
@@ -3430,7 +3476,7 @@ void wxAuiManager::OnFloatingPaneMoved(wxWindow* wnd, wxDirection dir)
 
     // if a key modifier is pressed while dragging the frame,
     // don't dock the window
-    if (!wxGetKeyState(WXK_CONTROL) && !wxGetKeyState(WXK_ALT))
+    if (CanDockPanel(pane))
     {
         // do the drop calculation
         DoDrop(m_docks, m_panes, pane, client_pt, action_offset);
@@ -3445,7 +3491,7 @@ void wxAuiManager::OnFloatingPaneMoved(wxWindow* wnd, wxDirection dir)
         if (m_flags & wxAUI_MGR_TRANSPARENT_DRAG)
             pane.frame->SetTransparent(255);
     }
-     else if (m_has_maximized)
+    else if (m_has_maximized)
     {
         RestoreMaximizedPane();
     }
@@ -3483,9 +3529,17 @@ void wxAuiManager::OnFloatingPaneClosed(wxWindow* wnd, wxCloseEvent& evt)
         evt.Veto();
         return;
     }
-     else 
+    else
     {
-        ClosePane(pane);
+        // close the pane, but check that it
+        // still exists in our pane array first
+        // (the event handler above might have removed it)
+
+        wxAuiPaneInfo& check = GetPane(wnd);
+        if (check.IsOk())
+        {
+            ClosePane(pane);
+        }
     }
 }
 
@@ -3493,11 +3547,8 @@ void wxAuiManager::OnFloatingPaneClosed(wxWindow* wnd, wxCloseEvent& evt)
 
 void wxAuiManager::OnFloatingPaneActivated(wxWindow* wnd)
 {
-    if (GetFlags() & wxAUI_MGR_ALLOW_ACTIVE_PANE)
+    if ((GetFlags() & wxAUI_MGR_ALLOW_ACTIVE_PANE) && GetPane(wnd).IsOk())
     {
-        // try to find the pane
-        wxASSERT_MSG(GetPane(wnd).IsOk(), wxT("Pane window not found"));
-
         SetActivePane(m_panes, wnd);
         Repaint();
     }
@@ -3509,6 +3560,10 @@ void wxAuiManager::OnFloatingPaneActivated(wxWindow* wnd)
 
 void wxAuiManager::OnRender(wxAuiManagerEvent& evt)
 {
+    // if the frame is about to be deleted, don't bother
+    if (!m_frame || wxPendingDelete.Member(m_frame))
+        return;
+
     wxDC* dc = evt.GetDC();
 
 #ifdef __WXMAC__
@@ -3520,8 +3575,8 @@ void wxAuiManager::OnRender(wxAuiManagerEvent& evt)
     {
         wxAuiDockUIPart& part = m_uiparts.Item(i);
 
-        // don't draw hidden pane items
-        if (part.sizer_item && !part.sizer_item->IsShown())
+        // don't draw hidden pane items or items that aren't windows
+        if (part.sizer_item && ((!part.sizer_item->IsWindow() && !part.sizer_item->IsSpacer() && !part.sizer_item->IsSizer()) || !part.sizer_item->IsShown()))
             continue;
 
         switch (part.type)
@@ -3623,7 +3678,7 @@ void wxAuiManager::OnSize(wxSizeEvent& event)
     {
         DoFrameLayout();
         Repaint();
-        
+
 #if wxUSE_MDI
         if (m_frame->IsKindOf(CLASSINFO(wxMDIParentFrame)))
         {
@@ -3647,7 +3702,7 @@ void wxAuiManager::OnFindManager(wxAuiManagerEvent& evt)
         evt.SetManager(NULL);
         return;
     }
-    
+
     // if we are managing a child frame, get the 'real' manager
     if (window->IsKindOf(CLASSINFO(wxAuiFloatingFrame)))
     {
@@ -3655,7 +3710,7 @@ void wxAuiManager::OnFindManager(wxAuiManagerEvent& evt)
         evt.SetManager(float_frame->GetOwnerManager());
         return;
     }
-        
+
     // return pointer to ourself
     evt.SetManager(this);
 }
@@ -3684,10 +3739,10 @@ void wxAuiManager::OnSetCursor(wxSetCursorEvent& event)
 
             if (part->orientation == wxVERTICAL)
                 cursor = wxCursor(wxCURSOR_SIZEWE);
-                 else
+            else
                 cursor = wxCursor(wxCURSOR_SIZENS);
         }
-         else if (part->type == wxAuiDockUIPart::typeGripper)
+        else if (part->type == wxAuiDockUIPart::typeGripper)
         {
             cursor = wxCursor(wxCURSOR_SIZING);
         }
@@ -3704,17 +3759,17 @@ void wxAuiManager::UpdateButtonOnScreen(wxAuiDockUIPart* button_ui_part,
     wxAuiDockUIPart* hit_test = HitTest(event.GetX(), event.GetY());
     if (!hit_test || !button_ui_part)
         return;
-        
+
     int state = wxAUI_BUTTON_STATE_NORMAL;
 
     if (hit_test == button_ui_part)
     {
         if (event.LeftDown())
             state = wxAUI_BUTTON_STATE_PRESSED;
-             else
+        else
             state = wxAUI_BUTTON_STATE_HOVER;
     }
-     else
+    else
     {
         if (event.LeftDown())
             state = wxAUI_BUTTON_STATE_HOVER;
@@ -3747,9 +3802,10 @@ void wxAuiManager::OnLeftDown(wxMouseEvent& event)
         if (part->type == wxAuiDockUIPart::typeDockSizer ||
             part->type == wxAuiDockUIPart::typePaneSizer)
         {
-            if (part->dock && part->dock->dock_direction == wxAUI_DOCK_CENTER)
-                return;
-        
+            // Removing this restriction so that a centre pane can be resized
+            //if (part->dock && part->dock->dock_direction == wxAUI_DOCK_CENTER)
+            //    return;
+
             // a dock may not be resized if it has a single
             // pane which is not resizable
             if (part->type == wxAuiDockUIPart::typeDockSizer && part->dock &&
@@ -3769,7 +3825,7 @@ void wxAuiManager::OnLeftDown(wxMouseEvent& event)
                                       event.m_y - part->rect.y);
             m_frame->CaptureMouse();
         }
-         else if (part->type == wxAuiDockUIPart::typePaneButton)
+        else if (part->type == wxAuiDockUIPart::typePaneButton)
         {
             m_action = actionClickButton;
             m_action_part = part;
@@ -3778,15 +3834,15 @@ void wxAuiManager::OnLeftDown(wxMouseEvent& event)
 
             UpdateButtonOnScreen(part, event);
         }
-         else if (part->type == wxAuiDockUIPart::typeCaption ||
+        else if (part->type == wxAuiDockUIPart::typeCaption ||
                   part->type == wxAuiDockUIPart::typeGripper)
         {
             // if we are managing a wxAuiFloatingFrame window, then
             // we are an embedded wxAuiManager inside the wxAuiFloatingFrame.
             // We want to initiate a toolbar drag in our owner manager
             wxWindow* managed_wnd = GetManagedWindow();
-            
-            if (part->pane && 
+
+            if (part->pane &&
                 part->pane->window &&
                 managed_wnd &&
                 managed_wnd->IsKindOf(CLASSINFO(wxAuiFloatingFrame)))
@@ -3798,11 +3854,8 @@ void wxAuiManager::OnLeftDown(wxMouseEvent& event)
                                                      event.m_y - part->rect.y));
                 return;
             }
-            
-        
-        
-            if (part->dock && part->dock->dock_direction == wxAUI_DOCK_CENTER)
-                return;
+
+
 
             if (GetFlags() & wxAUI_MGR_ALLOW_ACTIVE_PANE)
             {
@@ -3811,6 +3864,9 @@ void wxAuiManager::OnLeftDown(wxMouseEvent& event)
                 Repaint();
             }
 
+            if (part->dock && part->dock->dock_direction == wxAUI_DOCK_CENTER)
+                return;
+
             m_action = actionClickCaption;
             m_action_part = part;
             m_action_start = wxPoint(event.m_x, event.m_y);
@@ -3875,8 +3931,8 @@ void wxAuiManager::OnLeftUp(wxMouseEvent& event)
             Update();
             Repaint(NULL);
         }
-         else if (m_action_part &&
-                  m_action_part->type == wxAuiDockUIPart::typePaneSizer)
+        else if (m_action_part &&
+                 m_action_part->type == wxAuiDockUIPart::typePaneSizer)
         {
             wxAuiDockInfo& dock = *m_action_part->dock;
             wxAuiPaneInfo& pane = *m_action_part->pane;
@@ -3901,13 +3957,13 @@ void wxAuiManager::OnLeftUp(wxMouseEvent& event)
             // this will help us recalculate the pane's proportion
             if (dock.IsHorizontal())
                 new_pixsize = new_pos.x - pane_part->rect.x;
-                 else
+            else
                 new_pixsize = new_pos.y - pane_part->rect.y;
 
             // determine the size of the dock, based on orientation
             if (dock.IsHorizontal())
                 dock_pixels = dock.rect.GetWidth();
-                 else
+            else
                 dock_pixels = dock.rect.GetHeight();
 
             // determine the total proportion of all resizable panes,
@@ -3934,10 +3990,10 @@ void wxAuiManager::OnLeftUp(wxMouseEvent& event)
                 {
                     if (dock.IsHorizontal())
                         dock_pixels -= p.best_size.x;
-                         else
+                    else
                         dock_pixels -= p.best_size.y;
                 }
-                 else
+                else
                 {
                     total_proportion += p.dock_proportion;
                 }
@@ -3994,7 +4050,7 @@ void wxAuiManager::OnLeftUp(wxMouseEvent& event)
                     if (pane.HasCaption())
                         min_size += caption_size;
                 }
-                 else
+                else
                 {
                     min_size += pane.min_size.x;
                 }
@@ -4106,7 +4162,7 @@ void wxAuiManager::OnMotion(wxMouseEvent& event)
         wxPoint pos = m_action_part->rect.GetPosition();
         if (m_action_part->orientation == wxHORIZONTAL)
             pos.y = wxMax(0, event.m_y - m_action_offset.y);
-             else
+        else
             pos.x = wxMax(0, event.m_x - m_action_offset.x);
 
         wxRect rect(m_frame->ClientToScreen(pos),
@@ -4161,7 +4217,7 @@ void wxAuiManager::OnMotion(wxMouseEvent& event)
                         m_action_offset.x = 30;
                 }
             }
-             else
+            else
             {
                 m_action = actionDragToolbarPane;
                 m_action_window = pane_info->window;
@@ -4225,22 +4281,22 @@ void wxAuiManager::OnMotion(wxMouseEvent& event)
                     UpdateButtonOnScreen(m_hover_button, event);
                     Repaint();
                 }
-                
+
                 // mouse is over a button, so repaint the
                 // button in hover mode
                 UpdateButtonOnScreen(part, event);
                 m_hover_button = part;
-                
+
             }
         }
-         else
+        else
         {
             if (m_hover_button)
             {
                 m_hover_button = NULL;
                 Repaint();
             }
-             else
+            else
             {
                 event.Skip();
             }
@@ -4264,7 +4320,8 @@ void wxAuiManager::OnChildFocus(wxChildFocusEvent& event)
     // active panes are allowed by the owner)
     if (GetFlags() & wxAUI_MGR_ALLOW_ACTIVE_PANE)
     {
-        if (GetPane(event.GetWindow()).IsOk())
+        wxAuiPaneInfo& pane = GetPane(event.GetWindow());
+        if (pane.IsOk() && (pane.state & wxAuiPaneInfo::optionActive) == 0)
         {
             SetActivePane(m_panes, event.GetWindow());
             m_frame->Refresh();
@@ -4293,7 +4350,16 @@ void wxAuiManager::OnPaneButton(wxAuiManagerEvent& evt)
 
         if (!e.GetVeto())
         {
-            ClosePane(pane);
+            // close the pane, but check that it
+            // still exists in our pane array first
+            // (the event handler above might have removed it)
+
+            wxAuiPaneInfo& check = GetPane(pane.window);
+            if (check.IsOk())
+            {
+                ClosePane(pane);
+            }
+            
             Update();
         }
     }
@@ -4325,7 +4391,7 @@ void wxAuiManager::OnPaneButton(wxAuiManagerEvent& evt)
             Update();
         }
     }
-     else if (evt.button == wxAUI_BUTTON_PIN)
+    else if (evt.button == wxAUI_BUTTON_PIN)
     {
         if ((m_flags & wxAUI_MGR_ALLOW_FLOATING) &&
             pane.IsFloatable())