]> git.saurik.com Git - wxWidgets.git/blobdiff - src/aui/framemanager.cpp
fix GetGridColLabelWindow() name
[wxWidgets.git] / src / aui / framemanager.cpp
index 9e91f09a2a1abe8c966fcd7a4b69058dee981648..dc539a20786cf2a7ddfe8ee84cfa957e6437415f 100644 (file)
@@ -29,6 +29,7 @@
 #include "wx/aui/dockart.h"
 #include "wx/aui/floatpane.h"
 #include "wx/aui/tabmdi.h"
+#include "wx/aui/auibar.h"
 
 #ifndef WX_PRECOMP
     #include "wx/panel.h"
@@ -64,12 +65,13 @@ DEFINE_EVENT_TYPE(wxEVT_AUI_FIND_MANAGER)
     // 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)
@@ -255,6 +257,9 @@ public:
         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 );
@@ -297,7 +302,8 @@ static void DrawResizeHint(wxDC& dc, const wxRect& rect)
     wxBrush brush(stipple);
     dc.SetBrush(brush);
 #ifdef __WXMSW__
-    PatBlt(GetHdcOf(dc), rect.GetX(), rect.GetY(), rect.GetWidth(), rect.GetHeight(), PATINVERT);
+    wxMSWDCImpl *impl = (wxMSWDCImpl*) dc.GetImpl();
+    PatBlt(GetHdcOf(*impl), rect.GetX(), rect.GetY(), rect.GetWidth(), rect.GetHeight(), PATINVERT);
 #else
     dc.SetPen(*wxTRANSPARENT_PEN);
 
@@ -566,6 +572,7 @@ 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)
@@ -586,6 +593,7 @@ 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)
     {
@@ -728,6 +736,17 @@ 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__)
+    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
@@ -771,6 +790,7 @@ void wxAuiManager::UpdateHintWindowConfig()
         {
             wxFrame* f = static_cast<wxFrame*>(w);
             can_do_transparent = f->CanSetTransparent();
+
             break;
         }
 
@@ -806,6 +826,8 @@ 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);
@@ -934,6 +956,8 @@ 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;
@@ -967,7 +991,7 @@ 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(),
@@ -1002,6 +1026,22 @@ 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)
     {
@@ -1032,6 +1072,8 @@ bool wxAuiManager::AddPane(wxWindow* window, const wxAuiPaneInfo& pane_info)
         }
     }
 
+
+
     return true;
 }
 
@@ -1069,6 +1111,8 @@ 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)
     {
@@ -1129,6 +1173,8 @@ 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)
     {
@@ -1567,7 +1613,7 @@ 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;
@@ -2179,7 +2225,7 @@ wxSizer* wxAuiManager::LayoutAll(wxAuiPaneInfoArray& panes,
                 dock.toolbar = false;
             if (pane.HasFlag(wxAuiPaneInfo::optionDockFixed))
                 dock.fixed = true;
-            if (pane.state & wxAuiPaneInfo::actionPane)
+            if (pane.HasFlag(wxAuiPaneInfo::actionPane))
                 action_pane_marked = true;
         }
 
@@ -2316,7 +2362,10 @@ wxSizer* wxAuiManager::LayoutAll(wxAuiPaneInfoArray& panes,
                 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;
 
 
 
@@ -2379,6 +2428,7 @@ 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();
@@ -2857,7 +2907,8 @@ bool wxAuiManager::DoDrop(wxAuiDockInfoArray& docks,
                     (part->dock->dock_direction != wxAUI_DOCK_CENTER &&
                      part->dock->dock_direction != wxAUI_DOCK_NONE)))
                 {
-                    drop.Float();
+                    if (drop.IsFloatable())
+                        drop.Float();
                 }
 
                 m_skipping = false;
@@ -3225,7 +3276,7 @@ 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);
@@ -3261,6 +3312,17 @@ 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,
@@ -3558,7 +3620,6 @@ 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 (CanDockPanel(pane))
@@ -3881,6 +3942,8 @@ void wxAuiManager::UpdateButtonOnScreen(wxAuiDockUIPart* button_ui_part,
 
 void wxAuiManager::OnLeftDown(wxMouseEvent& event)
 {
+    m_currentDragItem = -1;
+
     wxAuiDockUIPart* part = HitTest(event.GetX(), event.GetY());
     if (part)
     {
@@ -3976,212 +4039,231 @@ 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();
+        wxRect& rect = m_action_part->dock->rect;
 
-        // get rid of the hint rectangle
-        wxScreenDC dc;
-        DrawResizeHint(dc, m_action_hintrect);
+        wxPoint new_pos(event.m_x - m_action_offset.x,
+            event.m_y - m_action_offset.y);
 
-        // resize the dock or the pane
-        if (m_action_part && m_action_part->type==wxAuiDockUIPart::typeDockSizer)
+        switch (m_action_part->dock->dock_direction)
         {
-            wxRect& rect = m_action_part->dock->rect;
-
-            wxPoint new_pos(event.m_x - m_action_offset.x,
-                            event.m_y - m_action_offset.y);
-
-            switch (m_action_part->dock->dock_direction)
-            {
-                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;
-            }
-
-            Update();
-            Repaint(NULL);
+        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;
         }
-        else if (m_action_part &&
-                 m_action_part->type == wxAuiDockUIPart::typePaneSizer)
-        {
-            wxAuiDockInfo& dock = *m_action_part->dock;
-            wxAuiPaneInfo& pane = *m_action_part->pane;
 
-            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;
+            }
+            else
+            {
+                total_proportion += p.dock_proportion;
             }
+        }
 
-            // 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)
+        // 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())
             {
-                wxAuiPaneInfo& p = *dock.panes.Item(i);
-                if (!p.IsFixed())
-                {
-                    borrow_pane = i;
-                    break;
-                }
+                borrow_pane = i;
+                break;
             }
+        }
 
 
-            // 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"));
+        // 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)
-            {
-                m_action = actionNone;
-                return;
-            }
+        // prevent division by zero
+        if (dock_pixels == 0 || total_proportion == 0 || borrow_pane == -1)
+        {
+            m_action = actionNone;
+            return false;
+        }
 
-            // calculate the new proportion of the pane
-            int new_proportion = (new_pixsize*total_proportion)/dock_pixels;
+        // calculate the new proportion of the pane
+        int new_proportion = (new_pixsize*total_proportion)/dock_pixels;
 
-            // default minimum size
-            int min_size = 0;
+        // 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;
+        // 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);
+            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;
-                }
+            // 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)
+        dock.panes.Item(borrow_pane)->dock_proportion -= prop_diff;
+        pane.dock_proportion = new_proportion;
 
-            // repaint
-            Update();
-            Repaint(NULL);
+        // 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)
@@ -4244,20 +4326,39 @@ 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())
+                    DrawResizeHint(dc, m_action_hintrect);
+                DrawResizeHint(dc, rect);
+                m_action_hintrect = rect;
+            }
+        }
     }
     else if (m_action == actionClickCaption)
     {
@@ -4267,8 +4368,9 @@ 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;
 
@@ -4323,7 +4425,7 @@ 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);
@@ -4398,6 +4500,16 @@ 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