]> git.saurik.com Git - wxWidgets.git/blobdiff - src/aui/framemanager.cpp
Remove 2.9.0 build slaves, they're not needed any more.
[wxWidgets.git] / src / aui / framemanager.cpp
index 30197f6d84bbe517ddf87317b4af332a8672e7b1..a1f7fb11dfe9a5a90ca8dbeef3806cb12d07511b 100644 (file)
@@ -28,6 +28,9 @@
 #include "wx/aui/framemanager.h"
 #include "wx/aui/dockart.h"
 #include "wx/aui/floatpane.h"
+#include "wx/aui/tabmdi.h"
+#include "wx/aui/auibar.h"
+#include "wx/mdi.h"
 
 #ifndef WX_PRECOMP
     #include "wx/panel.h"
@@ -36,8 +39,8 @@
     #include "wx/dcclient.h"
     #include "wx/dcscreen.h"
     #include "wx/toolbar.h"
-    #include "wx/mdi.h"
     #include "wx/image.h"
+    #include "wx/statusbr.h"
 #endif
 
 WX_CHECK_BUILD_OPTIONS("wxAUI")
@@ -52,18 +55,24 @@ WX_DEFINE_OBJARRAY(wxAuiPaneInfoArray)
 
 wxAuiPaneInfo wxAuiNullPaneInfo;
 wxAuiDockInfo wxAuiNullDockInfo;
-DEFINE_EVENT_TYPE(wxEVT_AUI_PANE_BUTTON)
-DEFINE_EVENT_TYPE(wxEVT_AUI_PANE_CLOSE)
-DEFINE_EVENT_TYPE(wxEVT_AUI_PANE_MAXIMIZE)
-DEFINE_EVENT_TYPE(wxEVT_AUI_PANE_RESTORE)
-DEFINE_EVENT_TYPE(wxEVT_AUI_RENDER)
-DEFINE_EVENT_TYPE(wxEVT_AUI_FIND_MANAGER)
+wxDEFINE_EVENT( wxEVT_AUI_PANE_BUTTON, wxAuiManagerEvent );
+wxDEFINE_EVENT( wxEVT_AUI_PANE_CLOSE, wxAuiManagerEvent );
+wxDEFINE_EVENT( wxEVT_AUI_PANE_MAXIMIZE, wxAuiManagerEvent );
+wxDEFINE_EVENT( wxEVT_AUI_PANE_RESTORE, wxAuiManagerEvent );
+wxDEFINE_EVENT( wxEVT_AUI_RENDER, wxAuiManagerEvent );
+wxDEFINE_EVENT( wxEVT_AUI_FIND_MANAGER, wxAuiManagerEvent );
 
 #ifdef __WXMAC__
     // a few defines to avoid nameclashes
     #define __MAC_OS_X_MEMORY_MANAGER_CLEAN__ 1
     #define __AIFF__
-    #include "wx/mac/private.h"
+    #include "wx/osx/private.h"
+#endif
+
+#ifdef __WXMSW__
+    #include "wx/msw/wrapwin.h"
+    #include "wx/msw/private.h"
+    #include "wx/msw/dc.h"
 #endif
 
 IMPLEMENT_DYNAMIC_CLASS(wxAuiManagerEvent, wxEvent)
@@ -73,6 +82,8 @@ IMPLEMENT_CLASS(wxAuiManager, wxEvtHandler)
 
 const int auiToolBarLayer = 10;
 
+#ifndef __WXGTK20__
+
 
 class wxPseudoTransparentFrame : public wxFrame
 {
@@ -151,7 +162,7 @@ public:
             wxRect rect(upd.GetRect());
             dc.DrawRectangle(rect.x, rect.y, rect.width, rect.height);
 
-            upd++;
+            ++upd;
         }
     }
 
@@ -208,6 +219,85 @@ BEGIN_EVENT_TABLE(wxPseudoTransparentFrame, wxFrame)
 END_EVENT_TABLE()
 
 
+#else
+  // __WXGTK20__
+
+#include <gtk/gtk.h>
+
+static void
+gtk_pseudo_window_realized_callback( GtkWidget *m_widget, void *WXUNUSED(win) )
+{
+        wxSize disp = wxGetDisplaySize();
+        int amount = 128;
+        wxRegion region;
+        for (int y=0; y<disp.y; y++)
+                {
+                    // Reverse the order of the bottom 4 bits
+                    int j=((y&8)?1:0)|((y&4)?2:0)|((y&2)?4:0)|((y&1)?8:0);
+                    if ((j*16+8)<amount)
+                        region.Union(0, y, disp.x, 1);
+                }
+        gdk_window_shape_combine_region(m_widget->window, region.GetRegion(), 0, 0);
+}
+
+
+class wxPseudoTransparentFrame: public wxFrame
+{
+public:
+    wxPseudoTransparentFrame(wxWindow* parent = NULL,
+                wxWindowID id = wxID_ANY,
+                const wxString& title = wxEmptyString,
+                const wxPoint& pos = wxDefaultPosition,
+                const wxSize& size = wxDefaultSize,
+                long style = wxDEFAULT_FRAME_STYLE,
+                const wxString &name = wxT("frame"))
+    {
+         if (!CreateBase( parent, id, pos, size, style, wxDefaultValidator, name ))
+            return;
+
+        m_title = title;
+
+        m_widget = gtk_window_new( GTK_WINDOW_POPUP );
+        g_object_ref(m_widget);
+
+        if (parent) parent->AddChild(this);
+
+        g_signal_connect( m_widget, "realize",
+                      G_CALLBACK (gtk_pseudo_window_realized_callback), this );
+
+        GdkColor col;
+        col.red = 128 * 256;
+        col.green = 192 * 256;
+        col.blue = 255 * 256;
+        gtk_widget_modify_bg( m_widget, GTK_STATE_NORMAL, &col );
+    }
+
+    bool SetTransparent(wxByte WXUNUSED(alpha))
+    {
+        return true;
+    }
+
+protected:
+    virtual void DoSetSizeHints( int minW, int minH,
+                                 int maxW, int maxH,
+                                 int incW, int incH)
+    {
+        // the real wxFrame method doesn't work for us because we're not really
+        // a top level window so skip it
+        wxWindow::DoSetSizeHints(minW, minH, maxW, maxH, incW, incH);
+    }
+
+private:
+    DECLARE_DYNAMIC_CLASS(wxPseudoTransparentFrame)
+};
+
+IMPLEMENT_DYNAMIC_CLASS(wxPseudoTransparentFrame, wxFrame)
+
+#endif
+ // __WXGTK20__
+
+
+
 // -- static utility functions --
 
 static wxBitmap wxPaneCreateStippleBitmap()
@@ -222,10 +312,15 @@ static void DrawResizeHint(wxDC& dc, const wxRect& rect)
     wxBitmap stipple = wxPaneCreateStippleBitmap();
     wxBrush brush(stipple);
     dc.SetBrush(brush);
+#ifdef __WXMSW__
+    wxMSWDCImpl *impl = (wxMSWDCImpl*) dc.GetImpl();
+    PatBlt(GetHdcOf(*impl), rect.GetX(), rect.GetY(), rect.GetWidth(), rect.GetHeight(), PATINVERT);
+#else
     dc.SetPen(*wxTRANSPARENT_PEN);
 
     dc.SetLogicalFunction(wxXOR);
     dc.DrawRectangle(rect);
+#endif
 }
 
 
@@ -429,20 +524,26 @@ static void RemovePaneFromDocks(wxAuiDockInfoArray& docks,
     }
 }
 
+/*
+// This function works fine, and may be used in the future
+
 // RenumberDockRows() takes a dock and assigns sequential numbers
 // to existing rows.  Basically it takes out the gaps; so if a
 // dock has rows with numbers 0,2,5, they will become 0,1,2
 static void RenumberDockRows(wxAuiDockInfoPtrArray& docks)
 {
-    int i, dock_count, j, pane_count;
+    int i, dock_count;
     for (i = 0, dock_count = docks.GetCount(); i < dock_count; ++i)
     {
         wxAuiDockInfo& dock = *docks.Item(i);
         dock.dock_row = i;
+
+        int j, pane_count;
         for (j = 0, pane_count = dock.panes.GetCount(); j < pane_count; ++j)
             dock.panes.Item(j)->dock_row = i;
     }
 }
+*/
 
 
 // SetActivePane() sets the active pane, as well as cycles through
@@ -468,6 +569,7 @@ static int PaneSortFunc(wxAuiPaneInfo** p1, wxAuiPaneInfo** p2)
 }
 
 
+
 // -- wxAuiManager class implementation --
 
 
@@ -482,15 +584,16 @@ BEGIN_EVENT_TABLE(wxAuiManager, wxEvtHandler)
     EVT_LEFT_UP(wxAuiManager::OnLeftUp)
     EVT_MOTION(wxAuiManager::OnMotion)
     EVT_LEAVE_WINDOW(wxAuiManager::OnLeaveWindow)
+    EVT_MOUSE_CAPTURE_LOST(wxAuiManager::OnCaptureLost)
     EVT_CHILD_FOCUS(wxAuiManager::OnChildFocus)
     EVT_AUI_FIND_MANAGER(wxAuiManager::OnFindManager)
-    EVT_TIMER(101, wxAuiManager::OnHintFadeTimer)
 END_EVENT_TABLE()
 
 
 wxAuiManager::wxAuiManager(wxWindow* managed_wnd, unsigned int flags)
 {
     m_action = actionNone;
+    m_action_window = NULL;
     m_last_mouse_move = wxPoint();
     m_hover_button = NULL;
     m_art = new wxAuiDefaultDockArt;
@@ -502,6 +605,7 @@ wxAuiManager::wxAuiManager(wxWindow* managed_wnd, unsigned int flags)
     m_dock_constraint_x = 0.3;
     m_dock_constraint_y = 0.3;
     m_reserved = NULL;
+    m_currentDragItem = -1;
 
     if (managed_wnd)
     {
@@ -511,13 +615,18 @@ wxAuiManager::wxAuiManager(wxWindow* managed_wnd, unsigned int flags)
 
 wxAuiManager::~wxAuiManager()
 {
-    int i;
-    for (i = 0; i < m_panes.Count(); i++ )
+    // NOTE: It's possible that the windows have already been destroyed by the
+    // time this dtor is called, so this loop can result in memory access via
+    // invalid pointers, resulting in a crash.  So it will be disabled while
+    // waiting for a better solution.
+#if 0
+    for ( size_t i = 0; i < m_panes.size(); i++ )
     {
-        wxAuiPaneInfo& pinfo = m_panes.Item(i);
-        if (pinfo.window && pinfo.window->GetParent() == 0)
+        wxAuiPaneInfo& pinfo = m_panes[i];
+        if (pinfo.window && !pinfo.window->GetParent())
             delete pinfo.window;
     }
+#endif
 
     delete m_art;
 }
@@ -529,6 +638,13 @@ 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
@@ -632,6 +748,18 @@ unsigned int wxAuiManager::GetFlags() const
     return m_flags;
 }
 
+// Convenience function
+bool wxAuiManager_HasLiveResize(wxAuiManager& manager)
+{
+    // With Core Graphics on Mac, it's not possible to show sash feedback,
+    // so we'll always use live update instead.
+#if defined(__WXMAC__)
+    wxUnusedVar(manager);
+    return true;
+#else
+    return (manager.GetFlags() & wxAUI_MGR_LIVE_RESIZE) == wxAUI_MGR_LIVE_RESIZE;
+#endif
+}
 
 // don't use these anymore as they are deprecated
 // use Set/GetManagedFrame() instead
@@ -656,7 +784,7 @@ wxAuiManager* wxAuiManager::GetManager(wxWindow* window)
     wxAuiManagerEvent evt(wxEVT_AUI_FIND_MANAGER);
     evt.SetManager(NULL);
     evt.ResumePropagation(wxEVENT_PROPAGATE_MAX);
-    if (!window->ProcessEvent(evt))
+    if (!window->GetEventHandler()->ProcessEvent(evt))
         return NULL;
 
     return evt.GetManager();
@@ -675,6 +803,7 @@ void wxAuiManager::UpdateHintWindowConfig()
         {
             wxFrame* f = static_cast<wxFrame*>(w);
             can_do_transparent = f->CanSetTransparent();
+
             break;
         }
 
@@ -710,6 +839,8 @@ void wxAuiManager::UpdateHintWindowConfig()
                                          wxDefaultPosition, wxSize(1,1),
                                          wxFRAME_FLOAT_ON_PARENT
                                          | wxFRAME_TOOL_WINDOW );
+            m_hint_wnd->Connect(wxEVT_ACTIVATE,
+                wxActivateEventHandler(wxAuiManager::OnHintActivate), NULL, this);
 
             // Can't set the bg colour of a Frame in wxMac
             wxPanel* p = new wxPanel(m_hint_wnd);
@@ -770,6 +901,17 @@ 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();
@@ -803,7 +945,7 @@ void wxAuiManager::ProcessMgrEvent(wxAuiManagerEvent& event)
     // first, give the owner frame a chance to override
     if (m_frame)
     {
-        if (m_frame->ProcessEvent(event))
+        if (m_frame->GetEventHandler()->ProcessEvent(event))
             return;
     }
 
@@ -827,6 +969,8 @@ void wxAuiManager::SetArtProvider(wxAuiDockArt* art_provider)
 
 bool wxAuiManager::AddPane(wxWindow* window, const wxAuiPaneInfo& pane_info)
 {
+    wxASSERT_MSG(window, wxT("NULL window ptrs are not allowed"));
+
     // check if the pane has a valid window
     if (!window)
         return false;
@@ -860,7 +1004,7 @@ bool wxAuiManager::AddPane(wxWindow* window, const wxAuiPaneInfo& pane_info)
     if (pinfo.name.empty() || already_exists)
     {
         pinfo.name.Printf(wxT("%08lx%08x%08x%08lx"),
-             ((unsigned long)pinfo.window) & 0xffffffff,
+             wxPtrToUInt(pinfo.window) & 0xffffffff,
              (unsigned int)time(NULL),
 #ifdef __WXWINCE__
              (unsigned int)GetTickCount(),
@@ -895,25 +1039,36 @@ bool wxAuiManager::AddPane(wxWindow* window, const wxAuiPaneInfo& pane_info)
         pinfo.buttons.Add(button);
     }
 
+    if (pinfo.HasGripper())
+    {
+        if (pinfo.window->IsKindOf(CLASSINFO(wxAuiToolBar)))
+        {
+            // prevent duplicate gripper -- both wxAuiManager and wxAuiToolBar
+            // have a gripper control.  The toolbar's built-in gripper
+            // meshes better with the look and feel of the control than ours,
+            // so turn wxAuiManager's gripper off, and the toolbar's on.
+
+            wxAuiToolBar* tb = static_cast<wxAuiToolBar*>(pinfo.window);
+            pinfo.SetFlag(wxAuiPaneInfo::optionGripper, false);
+            tb->SetGripperVisible(true);
+        }
+    }
+
+
     if (pinfo.best_size == wxDefaultSize &&
         pinfo.window)
     {
         pinfo.best_size = pinfo.window->GetClientSize();
 
+#if wxUSE_TOOLBAR
         if (pinfo.window->IsKindOf(CLASSINFO(wxToolBar)))
         {
             // GetClientSize() doesn't get the best size for
             // a toolbar under some newer versions of wxWidgets,
             // so use GetBestSize()
             pinfo.best_size = pinfo.window->GetBestSize();
-
-            // for some reason, wxToolBar::GetBestSize() is returning
-            // a size that is a pixel shy of the correct amount.
-            // I believe this to be the correct action, until
-            // wxToolBar::GetBestSize() is fixed.  Is this assumption
-            // correct?
-            pinfo.best_size.y++;
         }
+#endif // wxUSE_TOOLBAR
 
         if (pinfo.min_size != wxDefaultSize)
         {
@@ -924,6 +1079,8 @@ bool wxAuiManager::AddPane(wxWindow* window, const wxAuiPaneInfo& pane_info)
         }
     }
 
+
+
     return true;
 }
 
@@ -961,6 +1118,8 @@ bool wxAuiManager::AddPane(wxWindow* window,
 bool wxAuiManager::InsertPane(wxWindow* window, const wxAuiPaneInfo& pane_info,
                                 int insert_level)
 {
+    wxASSERT_MSG(window, wxT("NULL window ptrs are not allowed"));
+
     // shift the panes around, depending on the insert level
     switch (insert_level)
     {
@@ -1021,6 +1180,8 @@ bool wxAuiManager::InsertPane(wxWindow* window, const wxAuiPaneInfo& pane_info,
 // method will not destroy the window that is removed.
 bool wxAuiManager::DetachPane(wxWindow* window)
 {
+    wxASSERT_MSG(window, wxT("NULL window ptrs are not allowed"));
+
     int i, count;
     for (i = 0, count = m_panes.GetCount(); i < count; ++i)
     {
@@ -1074,8 +1235,7 @@ 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
@@ -1127,7 +1287,7 @@ void wxAuiManager::MaximizePane(wxAuiPaneInfo& pane_info)
     for (i = 0, pane_count = m_panes.GetCount(); i < pane_count; ++i)
     {
         wxAuiPaneInfo& p = m_panes.Item(i);
-        if (!p.IsToolbar())
+        if (!p.IsToolbar() && !p.IsFloating())
         {
             p.Restore();
 
@@ -1428,12 +1588,11 @@ 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)
@@ -1461,7 +1620,7 @@ void wxAuiManager::GetPanePositionsAndSizes(wxAuiDockInfo& dock,
     {
         wxAuiPaneInfo& pane = *(dock.panes.Item(pane_i));
 
-        if (pane.state & wxAuiPaneInfo::actionPane)
+        if (pane.HasFlag(wxAuiPaneInfo::actionPane))
         {
             wxASSERT_MSG(action_pane==-1, wxT("Too many fixed action panes"));
             action_pane = pane_i;
@@ -2071,7 +2230,9 @@ wxSizer* wxAuiManager::LayoutAll(wxAuiPaneInfoArray& panes,
                 dock.fixed = false;
             if (!pane.IsToolbar())
                 dock.toolbar = false;
-            if (pane.state & wxAuiPaneInfo::actionPane)
+            if (pane.HasFlag(wxAuiPaneInfo::optionDockFixed))
+                dock.fixed = true;
+            if (pane.HasFlag(wxAuiPaneInfo::actionPane))
                 action_pane_marked = true;
         }
 
@@ -2150,7 +2311,6 @@ wxSizer* wxAuiManager::LayoutAll(wxAuiPaneInfoArray& panes,
 
         // find any top docks in this layer
         FindDocks(docks, wxAUI_DOCK_TOP, layer, -1, arr);
-        RenumberDockRows(arr);
         if (!arr.IsEmpty())
         {
             for (row = 0, row_count = arr.GetCount(); row < row_count; ++row)
@@ -2165,7 +2325,6 @@ wxSizer* wxAuiManager::LayoutAll(wxAuiPaneInfoArray& panes,
 
         // find any left docks in this layer
         FindDocks(docks, wxAUI_DOCK_LEFT, layer, -1, arr);
-        RenumberDockRows(arr);
         if (!arr.IsEmpty())
         {
             for (row = 0, row_count = arr.GetCount(); row < row_count; ++row)
@@ -2204,20 +2363,21 @@ wxSizer* wxAuiManager::LayoutAll(wxAuiPaneInfoArray& panes,
 
         // find any right docks in this layer
         FindDocks(docks, wxAUI_DOCK_RIGHT, layer, -1, arr);
-        RenumberDockRows(arr);
         if (!arr.IsEmpty())
         {
             for (row = arr.GetCount()-1; row >= 0; --row)
                 LayoutAddDock(middle, *arr.Item(row), uiparts, spacer_only);
         }
 
-        cont->Add(middle, 1, wxEXPAND);
+        if (middle->GetChildren().GetCount() > 0)
+            cont->Add(middle, 1, wxEXPAND);
+             else
+            delete middle;
 
 
 
         // find any bottom docks in this layer
         FindDocks(docks, wxAUI_DOCK_BOTTOM, layer, -1, arr);
-        RenumberDockRows(arr);
         if (!arr.IsEmpty())
         {
             for (row = arr.GetCount()-1; row >= 0; --row)
@@ -2274,6 +2434,9 @@ void wxAuiManager::GetDockSizeConstraint(double* width_pct, double* height_pct)
 
 void wxAuiManager::Update()
 {
+    m_hover_button = NULL;
+    m_action_part = NULL;
+
     wxSizer* sizer;
     int i, pane_count = m_panes.GetCount();
 
@@ -2293,21 +2456,21 @@ 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);
 
@@ -2362,7 +2525,7 @@ void wxAuiManager::Update()
             {
                 // 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,
@@ -2375,6 +2538,14 @@ void wxAuiManager::Update()
                 */
                 }
 
+                // update whether the pane is resizable or not
+                long style = p.frame->GetWindowStyleFlag();
+                if (p.IsFixed())
+                    style &= ~wxRESIZE_BORDER;
+                else
+                    style |= wxRESIZE_BORDER;
+                p.frame->SetWindowStyleFlag(style);
+
                 if (p.frame->IsShown() != p.IsShown())
                     p.frame->Show(p.IsShown());
             }
@@ -2738,7 +2909,8 @@ bool wxAuiManager::DoDrop(wxAuiDockInfoArray& docks,
         // toolbars may only be moved in and to fixed-pane docks,
         // otherwise we will try to float the pane.  Also, the pane
         // should float if being dragged over center pane windows
-        if (!part->dock->fixed || part->dock->dock_direction == wxAUI_DOCK_CENTER)
+        if (!part->dock->fixed || part->dock->dock_direction == wxAUI_DOCK_CENTER ||
+            pt.x >= cli_size.x || pt.x <= 0 || pt.y >= cli_size.y || pt.y <= 0)
         {
             if (m_last_rect.IsEmpty() || m_last_rect.Contains(pt.x, pt.y ))
             {
@@ -2746,10 +2918,7 @@ bool wxAuiManager::DoDrop(wxAuiDockInfoArray& docks,
             }
             else
             {
-                if ((m_flags & wxAUI_MGR_ALLOW_FLOATING) &&
-                   (drop.IsFloatable() ||
-                    (part->dock->dock_direction != wxAUI_DOCK_CENTER &&
-                     part->dock->dock_direction != wxAUI_DOCK_NONE)))
+                if ((m_flags & wxAUI_MGR_ALLOW_FLOATING) && drop.IsFloatable())
                 {
                     drop.Float();
                 }
@@ -2763,16 +2932,11 @@ 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).
@@ -3037,6 +3201,8 @@ void wxAuiManager::OnHintFadeTimer(wxTimerEvent& WXUNUSED(event))
     if (!m_hint_wnd || m_hint_fadeamt >= m_hint_fademax)
     {
         m_hint_fadetimer.Stop();
+        Disconnect(m_hint_fadetimer.GetId(), wxEVT_TIMER,
+                   wxTimerEventHandler(wxAuiManager::OnHintFadeTimer));
         return;
     }
 
@@ -3062,6 +3228,7 @@ 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();
@@ -3071,15 +3238,16 @@ 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();
 
 
         if (m_hint_fadeamt != m_hint_fademax) //  Only fade if we need to
         {
             // start fade in timer
-            m_hint_fadetimer.SetOwner(this, 101);
+            m_hint_fadetimer.SetOwner(this);
             m_hint_fadetimer.Start(5);
+            Connect(m_hint_fadetimer.GetId(), wxEVT_TIMER,
+                    wxTimerEventHandler(wxAuiManager::OnHintFadeTimer));
         }
     }
     else  // Not using a transparent hint window...
@@ -3124,7 +3292,7 @@ void wxAuiManager::ShowHint(const wxRect& rect)
         // nasty redrawn problems.
         clip.Intersect(m_frame->GetRect());
 
-        screendc.SetClippingRegion(clip);
+        screendc.SetDeviceClippingRegion(clip);
 
         wxBitmap stipple = wxPaneCreateStippleBitmap();
         wxBrush brush(stipple);
@@ -3147,6 +3315,10 @@ void wxAuiManager::HideHint()
             m_hint_wnd->Show(false);
         m_hint_wnd->SetTransparent(0);
         m_hint_fadetimer.Stop();
+        // In case this is called while a hint fade is going, we need to
+        // disconnect the event handler.
+        Disconnect(m_hint_fadetimer.GetId(), wxEVT_TIMER,
+                   wxTimerEventHandler(wxAuiManager::OnHintFadeTimer));
         m_last_hint = wxRect();
         return;
     }
@@ -3160,6 +3332,17 @@ void wxAuiManager::HideHint()
     }
 }
 
+void wxAuiManager::OnHintActivate(wxActivateEvent& WXUNUSED(event))
+{
+    // Do nothing so this event isn't handled in the base handlers.
+
+    // Letting the hint window activate without this handler can lead to
+    // weird behavior on Mac where the menu is switched out to the top
+    // window's menu in MDI applications when it shouldn't be. So since
+    // we don't want user interaction with the hint window anyway, we just
+    // prevent it from activating here.
+}
+
 
 
 void wxAuiManager::StartPaneDrag(wxWindow* pane_window,
@@ -3210,6 +3393,7 @@ 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())
@@ -3301,6 +3485,9 @@ void wxAuiManager::OnFloatingPaneMoveStart(wxWindow* wnd)
     wxAuiPaneInfo& pane = GetPane(wnd);
     wxASSERT_MSG(pane.IsOk(), wxT("Pane window not found"));
 
+    if(!pane.frame)
+        return;
+
     if (m_flags & wxAUI_MGR_TRANSPARENT_DRAG)
         pane.frame->SetTransparent(150);
 }
@@ -3311,6 +3498,9 @@ void wxAuiManager::OnFloatingPaneMoving(wxWindow* wnd, wxDirection dir)
     wxAuiPaneInfo& pane = GetPane(wnd);
     wxASSERT_MSG(pane.IsOk(), wxT("Pane window not found"));
 
+    if(!pane.frame)
+        return;
+
     wxPoint pt = ::wxGetMousePosition();
 
 #if 0
@@ -3359,27 +3549,24 @@ 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;
     }
@@ -3387,7 +3574,7 @@ 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;
@@ -3414,6 +3601,9 @@ void wxAuiManager::OnFloatingPaneMoved(wxWindow* wnd, wxDirection dir)
     wxAuiPaneInfo& pane = GetPane(wnd);
     wxASSERT_MSG(pane.IsOk(), wxT("Pane window not found"));
 
+    if(!pane.frame)
+        return;
+
     wxPoint pt = ::wxGetMousePosition();
 
 #if 0
@@ -3459,10 +3649,9 @@ void wxAuiManager::OnFloatingPaneMoved(wxWindow* wnd, wxDirection dir)
     wxPoint frame_pos = pane.frame->GetPosition();
     wxPoint action_offset(pt.x-frame_pos.x, pt.y-frame_pos.y);
 
-
     // 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);
@@ -3487,13 +3676,16 @@ void wxAuiManager::OnFloatingPaneMoved(wxWindow* wnd, wxDirection dir)
     HideHint();
 }
 
-void wxAuiManager::OnFloatingPaneResized(wxWindow* wnd, const wxSize& size)
+void wxAuiManager::OnFloatingPaneResized(wxWindow* wnd, const wxRect& rect)
 {
     // try to find the pane
     wxAuiPaneInfo& pane = GetPane(wnd);
     wxASSERT_MSG(pane.IsOk(), wxT("Pane window not found"));
 
-    pane.floating_size = size;
+    pane.FloatingSize(rect.GetWidth(), rect.GetHeight());
+
+    // the top-left position may change as well as the size
+    pane.FloatingPosition(rect.x, rect.y);
 }
 
 
@@ -3517,7 +3709,15 @@ void wxAuiManager::OnFloatingPaneClosed(wxWindow* wnd, wxCloseEvent& evt)
     }
     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);
+        }
     }
 }
 
@@ -3525,11 +3725,8 @@ 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();
     }
@@ -3541,6 +3738,10 @@ 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__
@@ -3552,8 +3753,8 @@ 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)
@@ -3773,14 +3974,17 @@ void wxAuiManager::UpdateButtonOnScreen(wxAuiDockUIPart* button_ui_part,
 
 void wxAuiManager::OnLeftDown(wxMouseEvent& event)
 {
+    m_currentDragItem = -1;
+
     wxAuiDockUIPart* part = HitTest(event.GetX(), event.GetY());
     if (part)
     {
         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
@@ -3833,9 +4037,6 @@ void wxAuiManager::OnLeftDown(wxMouseEvent& event)
 
 
 
-            if (part->dock && part->dock->dock_direction == wxAUI_DOCK_CENTER)
-                return;
-
             if (GetFlags() & wxAUI_MGR_ALLOW_ACTIVE_PANE)
             {
                 // set the caption as active
@@ -3843,6 +4044,9 @@ 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);
@@ -3867,212 +4071,310 @@ void wxAuiManager::OnLeftDown(wxMouseEvent& event)
 #endif
 }
 
-
-void wxAuiManager::OnLeftUp(wxMouseEvent& event)
+/// Ends a resize action, or for live update, resizes the sash
+bool wxAuiManager::DoEndResizeAction(wxMouseEvent& event)
 {
-    if (m_action == actionResize)
+    // resize the dock or the pane
+    if (m_action_part && m_action_part->type==wxAuiDockUIPart::typeDockSizer)
     {
-        m_frame->ReleaseMouse();
+        // first, we must calculate the maximum size the dock may be
+        int sash_size = m_art->GetMetric(wxAUI_DOCKART_SASH_SIZE);
+
+        int used_width = 0, used_height = 0;
 
-        // get rid of the hint rectangle
-        wxScreenDC dc;
-        DrawResizeHint(dc, m_action_hintrect);
+        wxSize client_size = m_frame->GetClientSize();
 
-        // resize the dock or the pane
-        if (m_action_part && m_action_part->type==wxAuiDockUIPart::typeDockSizer)
+        size_t dock_i, dock_count = m_docks.GetCount();
+        for (dock_i = 0; dock_i < dock_count; ++dock_i)
         {
-            wxRect& rect = m_action_part->dock->rect;
+            wxAuiDockInfo& dock = m_docks.Item(dock_i);
+            if (dock.dock_direction == wxAUI_DOCK_TOP ||
+                dock.dock_direction == wxAUI_DOCK_BOTTOM)
+            {
+                used_height += dock.size;
+            }
+            if (dock.dock_direction == wxAUI_DOCK_LEFT ||
+                dock.dock_direction == wxAUI_DOCK_RIGHT)
+            {
+                used_width += dock.size;
+            }
+            if (dock.resizable)
+                used_width += sash_size;
+        }
+
+
+        int available_width = client_size.GetWidth() - used_width;
+        int available_height = client_size.GetHeight() - used_height;
 
-            wxPoint new_pos(event.m_x - m_action_offset.x,
-                            event.m_y - m_action_offset.y);
 
-            switch (m_action_part->dock->dock_direction)
+#if wxUSE_STATUSBAR
+        // if there's a status control, the available
+        // height decreases accordingly
+        if (m_frame && m_frame->IsKindOf(CLASSINFO(wxFrame)))
+        {
+            wxFrame* frame = static_cast<wxFrame*>(m_frame);
+            wxStatusBar* status = frame->GetStatusBar();
+            if (status)
             {
-                case wxAUI_DOCK_LEFT:
-                    m_action_part->dock->size = new_pos.x - rect.x;
-                    break;
-                case wxAUI_DOCK_TOP:
-                    m_action_part->dock->size = new_pos.y - rect.y;
-                    break;
-                case wxAUI_DOCK_RIGHT:
-                    m_action_part->dock->size = rect.x + rect.width -
-                                  new_pos.x - m_action_part->rect.GetWidth();
-                    break;
-                case wxAUI_DOCK_BOTTOM:
-                    m_action_part->dock->size = rect.y + rect.height -
-                                  new_pos.y - m_action_part->rect.GetHeight();
-                    break;
+                wxSize status_client_size = status->GetClientSize();
+                available_height -= status_client_size.GetHeight();
             }
-
-            Update();
-            Repaint(NULL);
         }
-        else if (m_action_part &&
-                 m_action_part->type == wxAuiDockUIPart::typePaneSizer)
+#endif
+
+        wxRect& rect = m_action_part->dock->rect;
+
+        wxPoint new_pos(event.m_x - m_action_offset.x,
+            event.m_y - m_action_offset.y);
+        int new_size, old_size = m_action_part->dock->size;
+
+        switch (m_action_part->dock->dock_direction)
         {
-            wxAuiDockInfo& dock = *m_action_part->dock;
-            wxAuiPaneInfo& pane = *m_action_part->pane;
+        case wxAUI_DOCK_LEFT:
+            new_size = new_pos.x - rect.x;
+            if (new_size-old_size > available_width)
+                new_size = old_size+available_width;
+            m_action_part->dock->size = new_size;
+            break;
+        case wxAUI_DOCK_TOP:
+            new_size = new_pos.y - rect.y;
+            if (new_size-old_size > available_height)
+                new_size = old_size+available_height;
+            m_action_part->dock->size = new_size;
+            break;
+        case wxAUI_DOCK_RIGHT:
+            new_size = rect.x + rect.width - new_pos.x -
+                       m_action_part->rect.GetWidth();
+            if (new_size-old_size > available_width)
+                new_size = old_size+available_width;
+            m_action_part->dock->size = new_size;
+            break;
+        case wxAUI_DOCK_BOTTOM:
+            new_size = rect.y + rect.height -
+                new_pos.y - m_action_part->rect.GetHeight();
+            if (new_size-old_size > available_height)
+                new_size = old_size+available_height;
+            m_action_part->dock->size = new_size;
+            break;
+        }
 
-            int total_proportion = 0;
-            int dock_pixels = 0;
-            int new_pixsize = 0;
+        Update();
+        Repaint(NULL);
+    }
+    else if (m_action_part &&
+        m_action_part->type == wxAuiDockUIPart::typePaneSizer)
+    {
+        wxAuiDockInfo& dock = *m_action_part->dock;
+        wxAuiPaneInfo& pane = *m_action_part->pane;
 
-            int caption_size = m_art->GetMetric(wxAUI_DOCKART_CAPTION_SIZE);
-            int pane_border_size = m_art->GetMetric(wxAUI_DOCKART_PANE_BORDER_SIZE);
-            int sash_size = m_art->GetMetric(wxAUI_DOCKART_SASH_SIZE);
+        int total_proportion = 0;
+        int dock_pixels = 0;
+        int new_pixsize = 0;
 
-            wxPoint new_pos(event.m_x - m_action_offset.x,
-                            event.m_y - m_action_offset.y);
+        int caption_size = m_art->GetMetric(wxAUI_DOCKART_CAPTION_SIZE);
+        int pane_border_size = m_art->GetMetric(wxAUI_DOCKART_PANE_BORDER_SIZE);
+        int sash_size = m_art->GetMetric(wxAUI_DOCKART_SASH_SIZE);
 
-            // determine the pane rectangle by getting the pane part
-            wxAuiDockUIPart* pane_part = GetPanePart(pane.window);
-            wxASSERT_MSG(pane_part,
-                       wxT("Pane border part not found -- shouldn't happen"));
+        wxPoint new_pos(event.m_x - m_action_offset.x,
+            event.m_y - m_action_offset.y);
 
-            // determine the new pixel size that the user wants;
-            // this will help us recalculate the pane's proportion
-            if (dock.IsHorizontal())
-                new_pixsize = new_pos.x - pane_part->rect.x;
-            else
-                new_pixsize = new_pos.y - pane_part->rect.y;
+        // determine the pane rectangle by getting the pane part
+        wxAuiDockUIPart* pane_part = GetPanePart(pane.window);
+        wxASSERT_MSG(pane_part,
+            wxT("Pane border part not found -- shouldn't happen"));
 
-            // determine the size of the dock, based on orientation
-            if (dock.IsHorizontal())
-                dock_pixels = dock.rect.GetWidth();
-            else
-                dock_pixels = dock.rect.GetHeight();
+        // determine the new pixel size that the user wants;
+        // this will help us recalculate the pane's proportion
+        if (dock.IsHorizontal())
+            new_pixsize = new_pos.x - pane_part->rect.x;
+        else
+            new_pixsize = new_pos.y - pane_part->rect.y;
 
-            // determine the total proportion of all resizable panes,
-            // and the total size of the dock minus the size of all
-            // the fixed panes
-            int i, dock_pane_count = dock.panes.GetCount();
-            int pane_position = -1;
-            for (i = 0; i < dock_pane_count; ++i)
+        // determine the size of the dock, based on orientation
+        if (dock.IsHorizontal())
+            dock_pixels = dock.rect.GetWidth();
+        else
+            dock_pixels = dock.rect.GetHeight();
+
+        // determine the total proportion of all resizable panes,
+        // and the total size of the dock minus the size of all
+        // the fixed panes
+        int i, dock_pane_count = dock.panes.GetCount();
+        int pane_position = -1;
+        for (i = 0; i < dock_pane_count; ++i)
+        {
+            wxAuiPaneInfo& p = *dock.panes.Item(i);
+            if (p.window == pane.window)
+                pane_position = i;
+
+            // while we're at it, subtract the pane sash
+            // width from the dock width, because this would
+            // skew our proportion calculations
+            if (i > 0)
+                dock_pixels -= sash_size;
+
+            // also, the whole size (including decorations) of
+            // all fixed panes must also be subtracted, because they
+            // are not part of the proportion calculation
+            if (p.IsFixed())
             {
-                wxAuiPaneInfo& p = *dock.panes.Item(i);
-                if (p.window == pane.window)
-                    pane_position = i;
-
-                // while we're at it, subtract the pane sash
-                // width from the dock width, because this would
-                // skew our proportion calculations
-                if (i > 0)
-                    dock_pixels -= sash_size;
-
-                // also, the whole size (including decorations) of
-                // all fixed panes must also be subtracted, because they
-                // are not part of the proportion calculation
-                if (p.IsFixed())
-                {
-                    if (dock.IsHorizontal())
-                        dock_pixels -= p.best_size.x;
-                    else
-                        dock_pixels -= p.best_size.y;
-                }
+                if (dock.IsHorizontal())
+                    dock_pixels -= p.best_size.x;
                 else
-                {
-                    total_proportion += p.dock_proportion;
-                }
+                    dock_pixels -= p.best_size.y;
             }
-
-            // find a pane in our dock to 'steal' space from or to 'give'
-            // space to -- this is essentially what is done when a pane is
-            // resized; the pane should usually be the first non-fixed pane
-            // to the right of the action pane
-            int borrow_pane = -1;
-            for (i = pane_position+1; i < dock_pane_count; ++i)
+            else
             {
-                wxAuiPaneInfo& p = *dock.panes.Item(i);
-                if (!p.IsFixed())
-                {
-                    borrow_pane = i;
-                    break;
-                }
+                total_proportion += p.dock_proportion;
             }
+        }
 
+        // new size can never be more than the number of dock pixels
+        if (new_pixsize > dock_pixels)
+            new_pixsize = dock_pixels;
 
-            // demand that the pane being resized is found in this dock
-            // (this assert really never should be raised)
-            wxASSERT_MSG(pane_position != -1, wxT("Pane not found in dock"));
 
-            // prevent division by zero
-            if (dock_pixels == 0 || total_proportion == 0 || borrow_pane == -1)
+        // find a pane in our dock to 'steal' space from or to 'give'
+        // space to -- this is essentially what is done when a pane is
+        // resized; the pane should usually be the first non-fixed pane
+        // to the right of the action pane
+        int borrow_pane = -1;
+        for (i = pane_position+1; i < dock_pane_count; ++i)
+        {
+            wxAuiPaneInfo& p = *dock.panes.Item(i);
+            if (!p.IsFixed())
             {
-                m_action = actionNone;
-                return;
+                borrow_pane = i;
+                break;
             }
+        }
 
-            // calculate the new proportion of the pane
-            int new_proportion = (new_pixsize*total_proportion)/dock_pixels;
 
-            // default minimum size
-            int min_size = 0;
+        // demand that the pane being resized is found in this dock
+        // (this assert really never should be raised)
+        wxASSERT_MSG(pane_position != -1, wxT("Pane not found in dock"));
 
-            // check against the pane's minimum size, if specified. please note
-            // that this is not enough to ensure that the minimum size will
-            // not be violated, because the whole frame might later be shrunk,
-            // causing the size of the pane to violate it's minimum size
-            if (pane.min_size.IsFullySpecified())
-            {
-                min_size = 0;
+        // prevent division by zero
+        if (dock_pixels == 0 || total_proportion == 0 || borrow_pane == -1)
+        {
+            m_action = actionNone;
+            return false;
+        }
 
-                if (pane.HasBorder())
-                    min_size += (pane_border_size*2);
+        // calculate the new proportion of the pane
+        int new_proportion = (new_pixsize*total_proportion)/dock_pixels;
 
-                // calculate minimum size with decorations (border,caption)
-                if (pane_part->orientation == wxVERTICAL)
-                {
-                    min_size += pane.min_size.y;
-                    if (pane.HasCaption())
-                        min_size += caption_size;
-                }
-                else
-                {
-                    min_size += pane.min_size.x;
-                }
+        // default minimum size
+        int min_size = 0;
+
+        // check against the pane's minimum size, if specified. please note
+        // that this is not enough to ensure that the minimum size will
+        // not be violated, because the whole frame might later be shrunk,
+        // causing the size of the pane to violate it's minimum size
+        if (pane.min_size.IsFullySpecified())
+        {
+            min_size = 0;
+
+            if (pane.HasBorder())
+                min_size += (pane_border_size*2);
+
+            // calculate minimum size with decorations (border,caption)
+            if (pane_part->orientation == wxVERTICAL)
+            {
+                min_size += pane.min_size.y;
+                if (pane.HasCaption())
+                    min_size += caption_size;
             }
+            else
+            {
+                min_size += pane.min_size.x;
+            }
+        }
 
 
-            // for some reason, an arithmatic error somewhere is causing
-            // the proportion calculations to always be off by 1 pixel;
-            // for now we will add the 1 pixel on, but we really should
-            // determine what's causing this.
-            min_size++;
+        // for some reason, an arithmatic error somewhere is causing
+        // the proportion calculations to always be off by 1 pixel;
+        // for now we will add the 1 pixel on, but we really should
+        // determine what's causing this.
+        min_size++;
 
-            int min_proportion = (min_size*total_proportion)/dock_pixels;
+        int min_proportion = (min_size*total_proportion)/dock_pixels;
 
-            if (new_proportion < min_proportion)
-                new_proportion = min_proportion;
+        if (new_proportion < min_proportion)
+            new_proportion = min_proportion;
 
 
 
-            int prop_diff = new_proportion - pane.dock_proportion;
+        int prop_diff = new_proportion - pane.dock_proportion;
 
-            // borrow the space from our neighbor pane to the
-            // right or bottom (depending on orientation)
-            dock.panes.Item(borrow_pane)->dock_proportion -= prop_diff;
-            pane.dock_proportion = new_proportion;
+        // borrow the space from our neighbor pane to the
+        // right or bottom (depending on orientation);
+        // also make sure we don't make the neighbor too small
+        int prop_borrow = dock.panes.Item(borrow_pane)->dock_proportion;
 
-            // repaint
-            Update();
-            Repaint(NULL);
+        if (prop_borrow - prop_diff < 0)
+        {
+            // borrowing from other pane would make it too small,
+            // so cancel the resize operation
+            prop_borrow = min_proportion;
+        }
+         else
+        {
+            prop_borrow -= prop_diff;
+        }
+
+
+        dock.panes.Item(borrow_pane)->dock_proportion = prop_borrow;
+        pane.dock_proportion = new_proportion;
+
+
+        // repaint
+        Update();
+        Repaint(NULL);
+    }
+
+    return true;
+}
+
+void wxAuiManager::OnLeftUp(wxMouseEvent& event)
+{
+    if (m_action == actionResize)
+    {
+        m_frame->ReleaseMouse();
+
+        if (!wxAuiManager_HasLiveResize(*this))
+        {
+            // get rid of the hint rectangle
+            wxScreenDC dc;
+            DrawResizeHint(dc, m_action_hintrect);
         }
+        if (m_currentDragItem != -1 && wxAuiManager_HasLiveResize(*this))
+            m_action_part = & (m_uiparts.Item(m_currentDragItem));
+
+        DoEndResizeAction(event);
+
+        m_currentDragItem = -1;
+
     }
     else if (m_action == actionClickButton)
     {
         m_hover_button = NULL;
         m_frame->ReleaseMouse();
-        UpdateButtonOnScreen(m_action_part, event);
 
-        // make sure we're still over the item that was originally clicked
-        if (m_action_part == HitTest(event.GetX(), event.GetY()))
+        if (m_action_part)
         {
-            // fire button-click event
-            wxAuiManagerEvent e(wxEVT_AUI_PANE_BUTTON);
-            e.SetManager(this);
-            e.SetPane(m_action_part->pane);
-            e.SetButton(m_action_part->button->button_id);
-            ProcessMgrEvent(e);
+            UpdateButtonOnScreen(m_action_part, event);
+
+            // make sure we're still over the item that was originally clicked
+            if (m_action_part == HitTest(event.GetX(), event.GetY()))
+            {
+                // fire button-click event
+                wxAuiManagerEvent e(wxEVT_AUI_PANE_BUTTON);
+                e.SetManager(this);
+                e.SetPane(m_action_part->pane);
+                e.SetButton(m_action_part->button->button_id);
+                ProcessMgrEvent(e);
+            }
         }
     }
     else if (m_action == actionClickCaption)
@@ -4135,20 +4437,49 @@ void wxAuiManager::OnMotion(wxMouseEvent& event)
 
     if (m_action == actionResize)
     {
-        wxPoint pos = m_action_part->rect.GetPosition();
-        if (m_action_part->orientation == wxHORIZONTAL)
-            pos.y = wxMax(0, event.m_y - m_action_offset.y);
+        // It's necessary to reset m_action_part since it destroyed
+        // by the Update within DoEndResizeAction.
+        if (m_currentDragItem != -1)
+            m_action_part = & (m_uiparts.Item(m_currentDragItem));
         else
-            pos.x = wxMax(0, event.m_x - m_action_offset.x);
+            m_currentDragItem = m_uiparts.Index(* m_action_part);
 
-        wxRect rect(m_frame->ClientToScreen(pos),
+        if (m_action_part)
+        {
+            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
+                pos.x = wxMax(0, event.m_x - m_action_offset.x);
+
+            if (wxAuiManager_HasLiveResize(*this))
+            {
+                m_frame->ReleaseMouse();
+                DoEndResizeAction(event);
+                m_frame->CaptureMouse();
+            }
+            else
+            {
+                wxRect rect(m_frame->ClientToScreen(pos),
                     m_action_part->rect.GetSize());
+                wxScreenDC dc;
 
-        wxScreenDC dc;
-        if (!m_action_hintrect.IsEmpty())
-            DrawResizeHint(dc, m_action_hintrect);
-        DrawResizeHint(dc, rect);
-        m_action_hintrect = rect;
+                if (!m_action_hintrect.IsEmpty())
+                {
+                    // remove old resize hint
+                    DrawResizeHint(dc, m_action_hintrect);
+                    m_action_hintrect = wxRect();
+                }
+
+                // draw new resize hint, if it's inside the managed frame
+                wxRect frame_screen_rect = m_frame->GetScreenRect();
+                if (frame_screen_rect.Contains(rect))
+                {
+                    DrawResizeHint(dc, rect);
+                    m_action_hintrect = rect;
+                }
+            }
+        }
     }
     else if (m_action == actionClickCaption)
     {
@@ -4158,8 +4489,9 @@ void wxAuiManager::OnMotion(wxMouseEvent& event)
         // caption has been clicked.  we need to check if the mouse
         // is now being dragged. if it is, we need to change the
         // mouse action to 'drag'
-        if (abs(event.m_x - m_action_start.x) > drag_x_threshold ||
-            abs(event.m_y - m_action_start.y) > drag_y_threshold)
+        if (m_action_part &&
+            (abs(event.m_x - m_action_start.x) > drag_x_threshold ||
+             abs(event.m_y - m_action_start.y) > drag_y_threshold))
         {
             wxAuiPaneInfo* pane_info = m_action_part->pane;
 
@@ -4214,7 +4546,7 @@ void wxAuiManager::OnMotion(wxMouseEvent& event)
         wxAuiPaneInfo& pane = GetPane(m_action_window);
         wxASSERT_MSG(pane.IsOk(), wxT("Pane window not found"));
 
-        pane.state |= wxAuiPaneInfo::actionPane;
+        pane.SetFlag(wxAuiPaneInfo::actionPane, true);
 
         wxPoint pt = event.GetPosition();
         DoDrop(m_docks, m_panes, pane, pt, m_action_offset);
@@ -4289,6 +4621,16 @@ void wxAuiManager::OnLeaveWindow(wxMouseEvent& WXUNUSED(event))
     }
 }
 
+void wxAuiManager::OnCaptureLost(wxMouseCaptureLostEvent& WXUNUSED(event))
+{
+    // cancel the operation in progress, if any
+    if ( m_action != actionNone )
+    {
+        m_action = actionNone;
+        HideHint();
+    }
+}
+
 void wxAuiManager::OnChildFocus(wxChildFocusEvent& event)
 {
     // when a child pane has it's focus set, we should change the
@@ -4296,7 +4638,8 @@ 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();
@@ -4325,7 +4668,16 @@ 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();
         }
     }