Applied patch [ 1701723 ] wxAUI: Added event for doubleclicks on the tabbar bg

[wxWidgets.git] / src / msw / tbar95.cpp

diff --git a/src/msw/tbar95.cpp b/src/msw/tbar95.cpp
index 5e4d811bf00016560be98d5686e6718b00814004..7966a6cd196f389d3f73cb1c0d42dd81a68b4332 100644 (file)
--- a/src/msw/tbar95.cpp
+++ b/src/msw/tbar95.cpp
@@ -40,6 +40,7 @@
     #include "wx/control.h"
     #include "wx/app.h"         // for GetComCtl32Version
     #include "wx/image.h"
     #include "wx/control.h"
     #include "wx/app.h"         // for GetComCtl32Version
     #include "wx/image.h"

+    #include "wx/stattext.h"

 #endif
 
 #include "wx/sysopt.h"
 #endif
 
 #include "wx/sysopt.h"


@@ -148,14 +149,38 @@ public:
                             clientData, shortHelp, longHelp)
     {
         m_nSepCount = 0;
                             clientData, shortHelp, longHelp)
     {
         m_nSepCount = 0;

+        m_staticText = 0;

     }
 
     }
 

-    wxToolBarTool(wxToolBar *tbar, wxControl *control)
-        : wxToolBarToolBase(tbar, control)
+    wxToolBarTool(wxToolBar *tbar, wxControl *control, const wxString& label)
+        : wxToolBarToolBase(tbar, control, label)

     {
     {

+        if ( IsControl() && !m_label.empty() )
+        {
+            // create a control to render the control's label
+            m_staticText = new wxStaticText
+                               (
+                                 m_tbar,
+                                 wxID_ANY,
+                                 m_label,
+                                 wxDefaultPosition,
+                                 wxDefaultSize,
+                                 wxALIGN_CENTRE | wxST_NO_AUTORESIZE
+                               );
+        }
+        else // no label
+        {
+            m_staticText = NULL;
+        }
+

         m_nSepCount = 1;
     }
 
         m_nSepCount = 1;
     }
 

+    virtual ~wxToolBarTool()
+    {
+        delete m_staticText;
+    }
+

     virtual void SetLabel(const wxString& label)
     {
         if ( label == m_label )
     virtual void SetLabel(const wxString& label)
     {
         if ( label == m_label )


@@ -163,12 +188,23 @@ public:
 
         wxToolBarToolBase::SetLabel(label);
 
 
         wxToolBarToolBase::SetLabel(label);
 

+        if ( m_staticText )
+            m_staticText->SetLabel(label);
+

         // we need to update the label shown in the toolbar because it has a
         // pointer to the internal buffer of the old label
         //
         // TODO: use TB_SETBUTTONINFO
     }
 
         // we need to update the label shown in the toolbar because it has a
         // pointer to the internal buffer of the old label
         //
         // TODO: use TB_SETBUTTONINFO
     }
 

+    wxStaticText* GetStaticText()
+    {
+        wxASSERT_MSG( IsControl(),
+                      _T("only makes sense for embedded control tools") );
+
+        return m_staticText;
+    }
+

     // set/get the number of separators which we use to cover the space used by
     // a control in the toolbar
     void SetSeparatorsCount(size_t count) { m_nSepCount = count; }
     // set/get the number of separators which we use to cover the space used by
     // a control in the toolbar
     void SetSeparatorsCount(size_t count) { m_nSepCount = count; }


@@ -176,6 +212,7 @@ public:
 
 private:
     size_t m_nSepCount;
 
 private:
     size_t m_nSepCount;

+    wxStaticText *m_staticText;

 
     DECLARE_NO_COPY_CLASS(wxToolBarTool)
 };
 
     DECLARE_NO_COPY_CLASS(wxToolBarTool)
 };


@@ -201,9 +238,10 @@ wxToolBarToolBase *wxToolBar::CreateTool(int id,
                              clientData, shortHelp, longHelp);
 }
 
                              clientData, shortHelp, longHelp);
 }
 

-wxToolBarToolBase *wxToolBar::CreateTool(wxControl *control)
+wxToolBarToolBase *
+wxToolBar::CreateTool(wxControl *control, const wxString& label)

 {
 {

-    return new wxToolBarTool(this, control);
+    return new wxToolBarTool(this, control, label);

 }
 
 // ----------------------------------------------------------------------------
 }
 
 // ----------------------------------------------------------------------------


@@ -220,7 +258,7 @@ void wxToolBar::Init()
     m_defaultWidth = DEFAULTBITMAPX;
     m_defaultHeight = DEFAULTBITMAPY;
 
     m_defaultWidth = DEFAULTBITMAPX;
     m_defaultHeight = DEFAULTBITMAPY;
 

-    m_pInTool = 0;
+    m_pInTool = NULL;

 }
 
 bool wxToolBar::Create(wxWindow *parent,
 }
 
 bool wxToolBar::Create(wxWindow *parent,


@@ -265,6 +303,11 @@ bool wxToolBar::MSWCreateToolbar(const wxPoint& pos, const wxSize& size)
     // toolbar-specific post initialisation
     ::SendMessage(GetHwnd(), TB_BUTTONSTRUCTSIZE, sizeof(TBBUTTON), 0);
 
     // toolbar-specific post initialisation
     ::SendMessage(GetHwnd(), TB_BUTTONSTRUCTSIZE, sizeof(TBBUTTON), 0);
 

+#ifdef TB_SETEXTENDEDSTYLE
+    if ( wxApp::GetComCtl32Version() >= 471 )
+        ::SendMessage(GetHwnd(), TB_SETEXTENDEDSTYLE, 0, TBSTYLE_EX_DRAWDDARROWS);
+#endif
+

     return true;
 }
 
     return true;
 }
 


@@ -362,6 +405,17 @@ wxSize wxToolBar::DoGetBestSize() const
         sizeBest.y = size.cy;
     }
 
         sizeBest.y = size.cy;
     }
 

+    if (!IsVertical())
+    {
+        // Without the extra height, DoGetBestSize can report a size that's
+        // smaller than the actual window, causing windows to overlap slightly
+        // in some circumstances, leading to missing borders (especially noticeable
+        // in AUI layouts).
+        if (!(GetWindowStyle() & wxTB_NODIVIDER))
+            sizeBest.y += 2;
+        sizeBest.y ++;
+       }
+

     CacheBestSize(sizeBest);
 
     return sizeBest;
     CacheBestSize(sizeBest);
 
     return sizeBest;


@@ -489,13 +543,16 @@ bool wxToolBar::DoDeleteTool(size_t pos, wxToolBarToolBase *tool)
     // takes care of all normal items)
     for ( /* node -> first after deleted */ ; node; node = node->GetNext() )
     {
     // takes care of all normal items)
     for ( /* node -> first after deleted */ ; node; node = node->GetNext() )
     {

-        wxToolBarToolBase *tool2 = node->GetData();
+        wxToolBarTool *tool2 = (wxToolBarTool*)node->GetData();

         if ( tool2->IsControl() )
         {
             int x;
             wxControl *control = tool2->GetControl();
             control->GetPosition(&x, NULL);
             control->Move(x - width, wxDefaultCoord);
         if ( tool2->IsControl() )
         {
             int x;
             wxControl *control = tool2->GetControl();
             control->GetPosition(&x, NULL);
             control->Move(x - width, wxDefaultCoord);

+
+            wxStaticText* staticText = tool2->GetStaticText();
+            staticText->Move(x - width, wxDefaultCoord);

         }
     }
 
         }
     }
 


@@ -680,8 +737,8 @@ bool wxToolBar::Realize()
                         // no disabled bitmap specified but we still need to
                         // fill the space in the image list with something, so
                         // we grey out the normal bitmap
                         // no disabled bitmap specified but we still need to
                         // fill the space in the image list with something, so
                         // we grey out the normal bitmap

-                        wxImage imgGreyed;
-                        wxCreateGreyedImage(bmp.ConvertToImage(), imgGreyed);
+                        wxImage
+                          imgGreyed = bmp.ConvertToImage().ConvertToGreyscale();

 
 #ifdef wxREMAP_BUTTON_COLOURS
                         if ( remapValue == Remap_Buttons )
 
 #ifdef wxREMAP_BUTTON_COLOURS
                         if ( remapValue == Remap_Buttons )


@@ -856,7 +913,7 @@ bool wxToolBar::Realize()
                 {
                     const wxString& label = tool->GetLabel();
                     if ( !label.empty() )
                 {
                     const wxString& label = tool->GetLabel();
                     if ( !label.empty() )

-                        button.iString = (int)label.c_str();
+                        button.iString = (int)label.wx_str();

                 }
 
                 button.idCommand = tool->GetId();
                 }
 
                 button.idCommand = tool->GetId();


@@ -883,7 +940,7 @@ bool wxToolBar::Realize()
                                 DoToggleTool(tool, true);
                             }
                         }
                                 DoToggleTool(tool, true);
                             }
                         }

-                        else if (tool->IsToggled())
+                        else if ( tool->IsToggled() )

                         {
                             wxToolBarToolsList::compatibility_iterator nodePrev = node->GetPrevious();
                             int prevIndex = i - 1;
                         {
                             wxToolBarToolsList::compatibility_iterator nodePrev = node->GetPrevious();
                             int prevIndex = i - 1;


@@ -897,7 +954,7 @@ bool wxToolBar::Realize()
                                 if ( tool->Toggle(false) )
                                     DoToggleTool(tool, false);
 
                                 if ( tool->Toggle(false) )
                                     DoToggleTool(tool, false);
 

-                                prevButton.fsState = TBSTATE_ENABLED;
+                                prevButton.fsState &= TBSTATE_CHECKED;

                                 nodePrev = nodePrev->GetPrevious();
                                 prevIndex--;
                             }
                                 nodePrev = nodePrev->GetPrevious();
                                 prevIndex--;
                             }


@@ -914,6 +971,10 @@ bool wxToolBar::Realize()
                         button.fsStyle = TBSTYLE_BUTTON;
                         break;
 
                         button.fsStyle = TBSTYLE_BUTTON;
                         break;
 

+                   case wxITEM_DROPDOWN:
+                        button.fsStyle = TBSTYLE_DROPDOWN;
+                        break;
+

                     default:
                         wxFAIL_MSG( _T("unexpected toolbar button kind") );
                         button.fsStyle = TBSTYLE_BUTTON;
                     default:
                         wxFAIL_MSG( _T("unexpected toolbar button kind") );
                         button.fsStyle = TBSTYLE_BUTTON;


@@ -944,7 +1005,7 @@ bool wxToolBar::Realize()
     size_t index = 0;
     for ( node = m_tools.GetFirst(); node; node = node->GetNext(), index++ )
     {
     size_t index = 0;
     for ( node = m_tools.GetFirst(); node; node = node->GetNext(), index++ )
     {

-        wxToolBarToolBase *tool = node->GetData();
+        wxToolBarTool *tool = (wxToolBarTool*)node->GetData();

 
         // we calculate the running y coord for vertical toolbars so we need to
         // get the items size for all items but for the horizontal ones we
 
         // we calculate the running y coord for vertical toolbars so we need to
         // get the items size for all items but for the horizontal ones we


@@ -971,7 +1032,15 @@ bool wxToolBar::Realize()
         }
 
         wxControl *control = tool->GetControl();
         }
 
         wxControl *control = tool->GetControl();

+        wxStaticText * const staticText = tool->GetStaticText();
+

         wxSize size = control->GetSize();
         wxSize size = control->GetSize();

+        wxSize staticTextSize;
+        if ( staticText )
+        {
+            staticTextSize = staticText->GetSize();
+            staticTextSize.y += 3; // margin between control and its label
+        }

 
         // the position of the leftmost controls corner
         int left = wxDefaultCoord;
 
         // the position of the leftmost controls corner
         int left = wxDefaultCoord;


@@ -1026,18 +1095,36 @@ bool wxToolBar::Realize()
             ((wxToolBarTool *)tool)->SetSeparatorsCount(nSeparators);
 
             // adjust the controls width to exactly cover the separators
             ((wxToolBarTool *)tool)->SetSeparatorsCount(nSeparators);
 
             // adjust the controls width to exactly cover the separators

-            control->SetSize((nSeparators + 1)*widthSep, wxDefaultCoord);
+            size.x = (nSeparators + 1)*widthSep;
+            control->SetSize(size.x, wxDefaultCoord);

         }
 
         }
 

-        // position the control itself correctly vertically
-        int height = r.bottom - r.top;
+        // position the control itself correctly vertically centering it on the
+        // icon area of the toolbar
+        int height = r.bottom - r.top - staticTextSize.y;
+

         int diff = height - size.y;
         int diff = height - size.y;

-        if ( diff < 0 )
+        if ( diff < 0 || !HasFlag(wxTB_TEXT) )

         {
         {

-            // the control is too high, resize to fit
-            control->SetSize(wxDefaultCoord, height - 2);
+            // not enough room for the static text
+            if ( staticText )
+                staticText->Hide();
+
+            // recalculate height & diff without the staticText control
+            height = r.bottom - r.top;
+            diff = height - size.y;
+            if ( diff < 0 )
+            {
+                // the control is too high, resize to fit
+                control->SetSize(wxDefaultCoord, height - 2);

 
 

-            diff = 2;
+                diff = 2;
+            }
+        }
+        else // enough space for both the control and the label
+        {
+            if ( staticText )
+                staticText->Show();

         }
 
         int top;
         }
 
         int top;


@@ -1057,6 +1144,11 @@ bool wxToolBar::Realize()
         }
 
         control->Move(left, top + (diff + 1) / 2);
         }
 
         control->Move(left, top + (diff + 1) / 2);

+        if ( staticText )
+        {
+            staticText->Move(left + (size.x - staticTextSize.x)/2,
+                             r.bottom - staticTextSize.y);
+        }

     }
 
     // the max index is the "real" number of buttons - i.e. counting even the
     }
 
     // the max index is the "real" number of buttons - i.e. counting even the


@@ -1073,7 +1165,7 @@ bool wxToolBar::Realize()
     {
         // if not set yet, have one column
         m_maxRows = 1;
     {
         // if not set yet, have one column
         m_maxRows = 1;

-        SetRows(m_nButtons);        
+        SetRows(m_nButtons);

     }
 
     InvalidateBestSize();
     }
 
     InvalidateBestSize();


@@ -1125,11 +1217,38 @@ bool wxToolBar::MSWOnNotify(int WXUNUSED(idCtrl),
                             WXLPARAM lParam,
                             WXLPARAM *WXUNUSED(result))
 {
                             WXLPARAM lParam,
                             WXLPARAM *WXUNUSED(result))
 {

+    LPNMHDR hdr = (LPNMHDR)lParam;
+    if ( hdr->code == TBN_DROPDOWN )
+    {
+        LPNMTOOLBAR tbhdr = (LPNMTOOLBAR)lParam;
+
+        wxCommandEvent evt(wxEVT_COMMAND_TOOL_DROPDOWN_CLICKED, tbhdr->iItem);
+        if ( GetEventHandler()->ProcessEvent(evt) )
+        {
+            // Event got handled, don't display default popup menu
+            return false;
+        }
+
+        const wxToolBarToolBase * const tool = FindById(tbhdr->iItem);
+        wxCHECK_MSG( tool, false, _T("drop down message for unknown tool") );
+
+        wxMenu * const menu = tool->GetDropdownMenu();
+        if ( !menu )
+            return false;
+
+        // Display popup menu below button
+        RECT r;
+        if (::SendMessage(GetHwnd(), TB_GETITEMRECT, GetToolPos(tbhdr->iItem), (LPARAM)&r))
+            PopupMenu(menu, r.left, r.bottom);
+
+        return true;
+    }
+
+

     if( !HasFlag(wxTB_NO_TOOLTIPS) )
     {
 #if wxUSE_TOOLTIPS
         // First check if this applies to us
     if( !HasFlag(wxTB_NO_TOOLTIPS) )
     {
 #if wxUSE_TOOLTIPS
         // First check if this applies to us

-        NMHDR *hdr = (NMHDR *)lParam;

 
         // the tooltips control created by the toolbar is sometimes Unicode, even
         // in an ANSI application - this seems to be a bug in comctl32.dll v5
 
         // the tooltips control created by the toolbar is sometimes Unicode, even
         // in an ANSI application - this seems to be a bug in comctl32.dll v5


@@ -1340,7 +1459,7 @@ void wxToolBar::SetToolNormalBitmap( int id, const wxBitmap& bitmap )
 
         tool->SetNormalBitmap(bitmap);
         Realize();
 
         tool->SetNormalBitmap(bitmap);
         Realize();

-    }    
+    }

 }
 
 void wxToolBar::SetToolDisabledBitmap( int id, const wxBitmap& bitmap )
 }
 
 void wxToolBar::SetToolDisabledBitmap( int id, const wxBitmap& bitmap )


@@ -1352,7 +1471,7 @@ void wxToolBar::SetToolDisabledBitmap( int id, const wxBitmap& bitmap )
 
         tool->SetDisabledBitmap(bitmap);
         Realize();
 
         tool->SetDisabledBitmap(bitmap);
         Realize();

-    }    
+    }

 }
 
 // ----------------------------------------------------------------------------
 }
 
 // ----------------------------------------------------------------------------


@@ -1380,9 +1499,14 @@ void wxToolBar::OnSysColourChanged(wxSysColourChangedEvent& event)
 
 void wxToolBar::OnMouseEvent(wxMouseEvent& event)
 {
 
 void wxToolBar::OnMouseEvent(wxMouseEvent& event)
 {

-    if (event.Leaving() && m_pInTool)
+    if ( event.Leaving() )

     {
     {

-        OnMouseEnter( -1 );
+        if ( m_pInTool )
+        {
+            OnMouseEnter(wxID_ANY);
+            m_pInTool = NULL;
+        }
+

         event.Skip();
         return;
     }
         event.Skip();
         return;
     }


@@ -1409,6 +1533,9 @@ void wxToolBar::OnEraseBackground(wxEraseEvent& event)
     RECT rect = wxGetClientRect(GetHwnd());
     HDC hdc = GetHdcOf((*event.GetDC()));
 
     RECT rect = wxGetClientRect(GetHwnd());
     HDC hdc = GetHdcOf((*event.GetDC()));
 

+    int majorVersion, minorVersion;
+    wxGetOsVersion(& majorVersion, & minorVersion);
+

 #if wxUSE_UXTHEME
     // we may need to draw themed colour so that we appear correctly on
     // e.g. notebook page under XP with themes but only do it if the parent
 #if wxUSE_UXTHEME
     // we may need to draw themed colour so that we appear correctly on
     // e.g. notebook page under XP with themes but only do it if the parent


@@ -1429,6 +1556,30 @@ void wxToolBar::OnEraseBackground(wxEraseEvent& event)
                 wxLogApiError(_T("DrawThemeParentBackground(toolbar)"), hr);
         }
     }
                 wxLogApiError(_T("DrawThemeParentBackground(toolbar)"), hr);
         }
     }

+
+    // Only draw a rebar theme on Vista, since it doesn't jive so well with XP
+    if ( !UseBgCol() && majorVersion >= 6 )
+    {
+        wxUxThemeEngine *theme = wxUxThemeEngine::GetIfActive();
+        if ( theme )
+        {
+            wxUxThemeHandle hTheme(this, L"REBAR");
+
+            RECT r;
+            wxRect rect = GetClientRect();
+            wxCopyRectToRECT(rect, r);
+
+            HRESULT hr = theme->DrawThemeBackground(hTheme, hdc, 0, 0, & r, NULL);
+            if ( hr == S_OK )
+                return;
+
+            // it can also return S_FALSE which seems to simply say that it
+            // didn't draw anything but no error really occurred
+            if ( FAILED(hr) )
+                wxLogApiError(_T("DrawThemeParentBackground(toolbar)"), hr);
+        }
+    }
+

 #endif // wxUSE_UXTHEME
 
     if ( UseBgCol() || (GetMSWToolbarStyle() & TBSTYLE_TRANSPARENT) )
 #endif // wxUSE_UXTHEME
 
     if ( UseBgCol() || (GetMSWToolbarStyle() & TBSTYLE_TRANSPARENT) )


@@ -1513,6 +1664,10 @@ bool wxToolBar::HandlePaint(WXWPARAM wParam, WXLPARAM lParam)
         // no controls, nothing to erase
         return false;
 
         // no controls, nothing to erase
         return false;
 

+    wxSize clientSize = GetClientSize();
+    int majorVersion, minorVersion;
+    wxGetOsVersion(& majorVersion, & minorVersion);
+

     // prepare the DC on which we'll be drawing
     wxClientDC dc(this);
     dc.SetBrush(wxBrush(GetBackgroundColour(), wxSOLID));
     // prepare the DC on which we'll be drawing
     wxClientDC dc(this);
     dc.SetBrush(wxBrush(GetBackgroundColour(), wxSOLID));


@@ -1539,12 +1694,18 @@ bool wxToolBar::HandlePaint(WXWPARAM wParam, WXLPARAM lParam)
     //     otherwise
     for ( node = m_tools.GetFirst(); node; node = node->GetNext() )
     {
     //     otherwise
     for ( node = m_tools.GetFirst(); node; node = node->GetNext() )
     {

-        wxToolBarToolBase *tool = node->GetData();
+        wxToolBarTool *tool = (wxToolBarTool*)node->GetData();

         if ( tool->IsControl() )
         {
             // get the control rect in our client coords
             wxControl *control = tool->GetControl();
         if ( tool->IsControl() )
         {
             // get the control rect in our client coords
             wxControl *control = tool->GetControl();

+            wxStaticText *staticText = tool->GetStaticText();

             wxRect rectCtrl = control->GetRect();
             wxRect rectCtrl = control->GetRect();

+            wxRect rectStaticText(0,0,0,0);
+            if ( staticText )
+            {
+                rectStaticText = staticText->GetRect();
+            }

 
             // iterate over all buttons
             TBBUTTON tbb;
 
             // iterate over all buttons
             TBBUTTON tbb;


@@ -1576,14 +1737,56 @@ bool wxToolBar::HandlePaint(WXWPARAM wParam, WXLPARAM lParam)
                 // does it intersect the control?
                 wxRect rectItem;
                 wxCopyRECTToRect(r, rectItem);
                 // does it intersect the control?
                 wxRect rectItem;
                 wxCopyRECTToRect(r, rectItem);

-                if ( rectCtrl.Intersects(rectItem) )
+                if ( rectCtrl.Intersects(rectItem) || (staticText && rectStaticText.Intersects(rectItem)))

                 {
                     // yes, do erase it!
                 {
                     // yes, do erase it!

-                    dc.DrawRectangle(rectItem);

 
 

+                    bool haveRefreshed = false;
+
+#if wxUSE_UXTHEME
+                    if ( !UseBgCol() && !GetParent()->UseBgCol() )
+                    {
+                        // Don't use DrawThemeBackground
+                    }
+                    else if ( !UseBgCol() && majorVersion >= 6 )
+                    {
+                        wxUxThemeEngine *theme = wxUxThemeEngine::GetIfActive();
+                        if ( theme )
+                        {
+                            wxUxThemeHandle hTheme(this, L"REBAR");
+
+                            RECT clipRect = r;
+
+                            // Draw the whole background since the pattern may be position sensitive;
+                            // but clip it to the area of interest.
+                            r.left = 0;
+                            r.right = clientSize.x;
+                            r.top = 0;
+                            r.bottom = clientSize.y;
+
+                            HRESULT hr = theme->DrawThemeBackground(hTheme, (HDC) dc.GetHDC(), 0, 0, & r, & clipRect);
+                            if ( hr == S_OK )
+                                haveRefreshed = true;
+                        }
+                    }
+#endif
+
+                    if (!haveRefreshed)
+                        dc.DrawRectangle(rectItem);
+                }
+
+                if ( rectCtrl.Intersects(rectItem) )
+                {

                     // Necessary in case we use a no-paint-on-size
                     // style in the parent: the controls can disappear
                     control->Refresh(false);
                     // Necessary in case we use a no-paint-on-size
                     // style in the parent: the controls can disappear
                     control->Refresh(false);

+                               }
+
+                if ( staticText && rectStaticText.Intersects(rectItem) )
+                {
+                    // Necessary in case we use a no-paint-on-size
+                    // style in the parent: the controls can disappear
+                    staticText->Refresh(false);

                 }
             }
         }
                 }
             }
         }


@@ -1598,18 +1801,11 @@ void wxToolBar::HandleMouseMove(WXWPARAM WXUNUSED(wParam), WXLPARAM lParam)
             y = GET_Y_LPARAM(lParam);
     wxToolBarToolBase* tool = FindToolForPosition( x, y );
 
             y = GET_Y_LPARAM(lParam);
     wxToolBarToolBase* tool = FindToolForPosition( x, y );
 

-    // cursor left current tool
-    if ( tool != m_pInTool && !tool )
-    {
-        m_pInTool = 0;
-        OnMouseEnter( -1 );
-    }
-
-    // cursor entered a tool
-    if ( tool != m_pInTool && tool )
+    // has the current tool changed?
+    if ( tool != m_pInTool )

     {
         m_pInTool = tool;
     {
         m_pInTool = tool;

-        OnMouseEnter( tool->GetId() );
+        OnMouseEnter(tool ? tool->GetId() : wxID_ANY);

     }
 }
 
     }
 }