Create a text measuring context until a real context is assigned, this allows things...

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

diff --git a/src/msw/listbox.cpp b/src/msw/listbox.cpp
index c48879e34beaffd041616427968858d6d758a214..015b6946f4b121834f42e40cf918dd583240fd16 100644 (file)
--- a/src/msw/listbox.cpp
+++ b/src/msw/listbox.cpp
@@ -32,6 +32,7 @@
 #endif
 
 #include "wx/msw/private.h"
 #endif
 
 #include "wx/msw/private.h"

+#include "wx/msw/dc.h"

 
 #include <windowsx.h>
 
 
 #include <windowsx.h>
 


@@ -76,11 +77,12 @@ wxBEGIN_FLAGS( wxListBoxStyle )
     wxFLAGS_MEMBER(wxLB_HSCROLL)
     wxFLAGS_MEMBER(wxLB_ALWAYS_SB)
     wxFLAGS_MEMBER(wxLB_NEEDED_SB)
     wxFLAGS_MEMBER(wxLB_HSCROLL)
     wxFLAGS_MEMBER(wxLB_ALWAYS_SB)
     wxFLAGS_MEMBER(wxLB_NEEDED_SB)

+    wxFLAGS_MEMBER(wxLB_NO_SB)

     wxFLAGS_MEMBER(wxLB_SORT)
 
 wxEND_FLAGS( wxListBoxStyle )
 
     wxFLAGS_MEMBER(wxLB_SORT)
 
 wxEND_FLAGS( wxListBoxStyle )
 

-IMPLEMENT_DYNAMIC_CLASS_XTI(wxListBox, wxControl,"wx/listbox.h")
+IMPLEMENT_DYNAMIC_CLASS_XTI(wxListBox, wxControlWithItems,"wx/listbox.h")

 
 wxBEGIN_PROPERTIES_TABLE(wxListBox)
     wxEVENT_PROPERTY( Select , wxEVT_COMMAND_LISTBOX_SELECTED , wxCommandEvent )
 
 wxBEGIN_PROPERTIES_TABLE(wxListBox)
     wxEVENT_PROPERTY( Select , wxEVT_COMMAND_LISTBOX_SELECTED , wxCommandEvent )


@@ -97,7 +99,7 @@ wxEND_HANDLERS_TABLE()
 
 wxCONSTRUCTOR_4( wxListBox , wxWindow* , Parent , wxWindowID , Id , wxPoint , Position , wxSize , Size )
 #else
 
 wxCONSTRUCTOR_4( wxListBox , wxWindow* , Parent , wxWindowID , Id , wxPoint , Position , wxSize , Size )
 #else

-IMPLEMENT_DYNAMIC_CLASS(wxListBox, wxControl)
+IMPLEMENT_DYNAMIC_CLASS(wxListBox, wxControlWithItems)

 #endif
 
 /*
 #endif
 
 /*


@@ -144,7 +146,7 @@ wxOwnerDrawn *wxListBox::CreateLboxItem(size_t WXUNUSED(n))
 wxListBox::wxListBox()
 {
     m_noItems = 0;
 wxListBox::wxListBox()
 {
     m_noItems = 0;

-    m_selected = 0;
+    m_updateHorizontalExtent = false;

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


@@ -157,14 +159,14 @@ bool wxListBox::Create(wxWindow *parent,
                        const wxString& name)
 {
     m_noItems = 0;
                        const wxString& name)
 {
     m_noItems = 0;

-    m_selected = 0;
+    m_updateHorizontalExtent = false;

 
     // initialize base class fields
     if ( !CreateControl(parent, id, pos, size, style, validator, name) )
         return false;
 
     // create the native control
 
     // initialize base class fields
     if ( !CreateControl(parent, id, pos, size, style, validator, name) )
         return false;
 
     // create the native control

-    if ( !MSWCreateControl(_T("LISTBOX"), wxEmptyString, pos, size) )
+    if ( !MSWCreateControl(wxT("LISTBOX"), wxEmptyString, pos, size) )

     {
         // control creation failed
         return false;
     {
         // control creation failed
         return false;


@@ -176,7 +178,8 @@ bool wxListBox::Create(wxWindow *parent,
         Append(choices[i]);
     }
 
         Append(choices[i]);
     }
 

-    // now we can compute our best size correctly, so do it if necessary
+    // now we can compute our best size correctly, so do it again
+    InvalidateBestSize();

     SetInitialSize(size);
 
     return true;
     SetInitialSize(size);
 
     return true;


@@ -198,17 +201,13 @@ bool wxListBox::Create(wxWindow *parent,
 
 wxListBox::~wxListBox()
 {
 
 wxListBox::~wxListBox()
 {

-    Free();
+    Clear();

 }
 
 WXDWORD wxListBox::MSWGetStyle(long style, WXDWORD *exstyle) const
 {
     WXDWORD msStyle = wxControl::MSWGetStyle(style, exstyle);
 
 }
 
 WXDWORD wxListBox::MSWGetStyle(long style, WXDWORD *exstyle) const
 {
     WXDWORD msStyle = wxControl::MSWGetStyle(style, exstyle);
 

-    // always show the vertical scrollbar if necessary -- otherwise it is
-    // impossible to use the control with the mouse
-    msStyle |= WS_VSCROLL;
-

     // we always want to get the notifications
     msStyle |= LBS_NOTIFY;
 
     // we always want to get the notifications
     msStyle |= LBS_NOTIFY;
 


@@ -217,15 +216,23 @@ WXDWORD wxListBox::MSWGetStyle(long style, WXDWORD *exstyle) const
     msStyle |= LBS_NOINTEGRALHEIGHT;
 
     wxASSERT_MSG( !(style & wxLB_MULTIPLE) || !(style & wxLB_EXTENDED),
     msStyle |= LBS_NOINTEGRALHEIGHT;
 
     wxASSERT_MSG( !(style & wxLB_MULTIPLE) || !(style & wxLB_EXTENDED),

-                  _T("only one of listbox selection modes can be specified") );
+                  wxT("only one of listbox selection modes can be specified") );

 
     if ( style & wxLB_MULTIPLE )
         msStyle |= LBS_MULTIPLESEL;
     else if ( style & wxLB_EXTENDED )
         msStyle |= LBS_EXTENDEDSEL;
 
 
     if ( style & wxLB_MULTIPLE )
         msStyle |= LBS_MULTIPLESEL;
     else if ( style & wxLB_EXTENDED )
         msStyle |= LBS_EXTENDEDSEL;
 

-    if ( m_windowStyle & wxLB_ALWAYS_SB )
-        msStyle |= LBS_DISABLENOSCROLL;
+    wxASSERT_MSG( !(style & wxLB_ALWAYS_SB) || !(style & wxLB_NO_SB),
+                  wxT( "Conflicting styles wxLB_ALWAYS_SB and wxLB_NO_SB." ) );
+
+    if ( !(style & wxLB_NO_SB) )
+    {
+        msStyle |= WS_VSCROLL;
+        if ( style & wxLB_ALWAYS_SB )
+            msStyle |= LBS_DISABLENOSCROLL;
+    }
+

     if ( m_windowStyle & wxLB_HSCROLL )
         msStyle |= WS_HSCROLL;
     if ( m_windowStyle & wxLB_SORT )
     if ( m_windowStyle & wxLB_HSCROLL )
         msStyle |= WS_HSCROLL;
     if ( m_windowStyle & wxLB_SORT )


@@ -244,6 +251,17 @@ WXDWORD wxListBox::MSWGetStyle(long style, WXDWORD *exstyle) const
     return msStyle;
 }
 
     return msStyle;
 }
 

+void wxListBox::OnInternalIdle()
+{
+    wxWindow::OnInternalIdle();
+
+    if (m_updateHorizontalExtent)
+    {
+        SetHorizontalExtent(wxEmptyString);
+        m_updateHorizontalExtent = false;
+    }
+}
+

 // ----------------------------------------------------------------------------
 // implementation of wxListBoxBase methods
 // ----------------------------------------------------------------------------
 // ----------------------------------------------------------------------------
 // implementation of wxListBoxBase methods
 // ----------------------------------------------------------------------------


@@ -256,91 +274,18 @@ void wxListBox::DoSetFirstItem(int N)
     SendMessage(GetHwnd(), LB_SETTOPINDEX, (WPARAM)N, (LPARAM)0);
 }
 
     SendMessage(GetHwnd(), LB_SETTOPINDEX, (WPARAM)N, (LPARAM)0);
 }
 

-void wxListBox::Delete(unsigned int n)
+void wxListBox::DoDeleteOneItem(unsigned int n)

 {
     wxCHECK_RET( IsValid(n),
                  wxT("invalid index in wxListBox::Delete") );
 
 {
     wxCHECK_RET( IsValid(n),
                  wxT("invalid index in wxListBox::Delete") );
 

-    // for owner drawn objects, the data is used for storing wxOwnerDrawn
-    // pointers and we shouldn't touch it
-#if !wxUSE_OWNER_DRAWN
-    if ( !(m_windowStyle & wxLB_OWNERDRAW) )
-#endif // !wxUSE_OWNER_DRAWN
-        if ( HasClientObjectData() )
-        {
-            delete GetClientObject(n);
-        }
-

     SendMessage(GetHwnd(), LB_DELETESTRING, n, 0);
     m_noItems--;
 
     SendMessage(GetHwnd(), LB_DELETESTRING, n, 0);
     m_noItems--;
 

-    SetHorizontalExtent(wxEmptyString);
-}
-
-int wxListBox::DoAppend(const wxString& item)
-{
-    int index = ListBox_AddString(GetHwnd(), item);
-    m_noItems++;
-
-#if wxUSE_OWNER_DRAWN
-    if ( m_windowStyle & wxLB_OWNERDRAW ) {
-        wxOwnerDrawn *pNewItem = CreateLboxItem(index); // dummy argument
-        pNewItem->SetName(item);
-        m_aItems.Insert(pNewItem, index);
-        ListBox_SetItemData(GetHwnd(), index, pNewItem);
-        pNewItem->SetFont(GetFont());
-    }
-#endif // wxUSE_OWNER_DRAWN
-
-    SetHorizontalExtent(item);
+    // SetHorizontalExtent(wxEmptyString); can be slow
+    m_updateHorizontalExtent = true;

 
 

-    return index;
-}
-
-void wxListBox::DoSetItems(const wxArrayString& choices, void** clientData)
-{
-    // avoid flicker - but don't need to do this for a hidden listbox
-    bool hideAndShow = IsShown();
-    if ( hideAndShow )
-    {
-        ShowWindow(GetHwnd(), SW_HIDE);
-    }
-
-    ListBox_ResetContent(GetHwnd());
-
-    m_noItems = choices.GetCount();
-    unsigned int i;
-    for (i = 0; i < m_noItems; i++)
-    {
-        ListBox_AddString(GetHwnd(), choices[i]);
-        if ( clientData )
-        {
-            SetClientData(i, clientData[i]);
-        }
-    }
-
-#if wxUSE_OWNER_DRAWN
-    if ( m_windowStyle & wxLB_OWNERDRAW ) {
-        // first delete old items
-        WX_CLEAR_ARRAY(m_aItems);
-
-        // then create new ones
-        for ( unsigned int ui = 0; ui < m_noItems; ui++ ) {
-            wxOwnerDrawn *pNewItem = CreateLboxItem(ui);
-            pNewItem->SetName(choices[ui]);
-            m_aItems.Add(pNewItem);
-            ListBox_SetItemData(GetHwnd(), ui, pNewItem);
-        }
-    }
-#endif // wxUSE_OWNER_DRAWN
-
-    SetHorizontalExtent();
-
-    if ( hideAndShow )
-    {
-        // show the listbox back if we hid it
-        ShowWindow(GetHwnd(), SW_SHOW);
-    }
+    UpdateOldSelections();

 }
 
 int wxListBox::FindString(const wxString& s, bool bCase) const
 }
 
 int wxListBox::FindString(const wxString& s, bool bCase) const


@@ -349,21 +294,23 @@ int wxListBox::FindString(const wxString& s, bool bCase) const
     if (bCase)
        return wxItemContainerImmutable::FindString( s, bCase );
 
     if (bCase)
        return wxItemContainerImmutable::FindString( s, bCase );
 

-    int pos = ListBox_FindStringExact(GetHwnd(), -1, s);
+    int pos = ListBox_FindStringExact(GetHwnd(), -1, s.wx_str());

     if (pos == LB_ERR)
         return wxNOT_FOUND;
     else
         return pos;
 }
 
     if (pos == LB_ERR)
         return wxNOT_FOUND;
     else
         return pos;
 }
 

-void wxListBox::Clear()
+void wxListBox::DoClear()

 {
     Free();
 
     ListBox_ResetContent(GetHwnd());
 
     m_noItems = 0;
 {
     Free();
 
     ListBox_ResetContent(GetHwnd());
 
     m_noItems = 0;

-    SetHorizontalExtent();
+    m_updateHorizontalExtent = true;
+
+    UpdateOldSelections();

 }
 
 void wxListBox::Free()
 }
 
 void wxListBox::Free()


@@ -373,15 +320,7 @@ void wxListBox::Free()
     {
         WX_CLEAR_ARRAY(m_aItems);
     }
     {
         WX_CLEAR_ARRAY(m_aItems);
     }

-    else

 #endif // wxUSE_OWNER_DRAWN
 #endif // wxUSE_OWNER_DRAWN

-    if ( HasClientObjectData() )
-    {
-        for ( unsigned int n = 0; n < m_noItems; n++ )
-        {
-            delete GetClientObject(n);
-        }
-    }

 }
 
 void wxListBox::DoSetSelection(int N, bool select)
 }
 
 void wxListBox::DoSetSelection(int N, bool select)


@@ -397,6 +336,8 @@ void wxListBox::DoSetSelection(int N, bool select)
     {
         SendMessage(GetHwnd(), LB_SETCURSEL, select ? N : -1, 0);
     }
     {
         SendMessage(GetHwnd(), LB_SETCURSEL, select ? N : -1, 0);
     }

+
+    UpdateOldSelections();

 }
 
 bool wxListBox::IsSelected(int N) const
 }
 
 bool wxListBox::IsSelected(int N) const


@@ -407,11 +348,6 @@ bool wxListBox::IsSelected(int N) const
     return SendMessage(GetHwnd(), LB_GETSEL, N, 0) == 0 ? false : true;
 }
 
     return SendMessage(GetHwnd(), LB_GETSEL, N, 0) == 0 ? false : true;
 }
 

-wxClientData* wxListBox::DoGetItemClientObject(unsigned int n) const
-{
-    return (wxClientData *)DoGetItemClientData(n);
-}
-

 void *wxListBox::DoGetItemClientData(unsigned int n) const
 {
     wxCHECK_MSG( IsValid(n), NULL,
 void *wxListBox::DoGetItemClientData(unsigned int n) const
 {
     wxCHECK_MSG( IsValid(n), NULL,


@@ -420,27 +356,15 @@ void *wxListBox::DoGetItemClientData(unsigned int n) const
     return (void *)SendMessage(GetHwnd(), LB_GETITEMDATA, n, 0);
 }
 
     return (void *)SendMessage(GetHwnd(), LB_GETITEMDATA, n, 0);
 }
 

-void wxListBox::DoSetItemClientObject(unsigned int n, wxClientData* clientData)
-{
-    DoSetItemClientData(n, clientData);
-}
-

 void wxListBox::DoSetItemClientData(unsigned int n, void *clientData)
 {
     wxCHECK_RET( IsValid(n),
                  wxT("invalid index in wxListBox::SetClientData") );
 
 void wxListBox::DoSetItemClientData(unsigned int n, void *clientData)
 {
     wxCHECK_RET( IsValid(n),
                  wxT("invalid index in wxListBox::SetClientData") );
 

-#if wxUSE_OWNER_DRAWN
-    if ( m_windowStyle & wxLB_OWNERDRAW )
-    {
-        // client data must be pointer to wxOwnerDrawn, otherwise we would crash
-        // in OnMeasure/OnDraw.
-        wxFAIL_MSG(wxT("Can't use client data with owner-drawn listboxes"));
-    }
-#endif // wxUSE_OWNER_DRAWN
-

     if ( ListBox_SetItemData(GetHwnd(), n, clientData) == LB_ERR )
     if ( ListBox_SetItemData(GetHwnd(), n, clientData) == LB_ERR )

+    {

         wxLogDebug(wxT("LB_SETITEMDATA failed"));
         wxLogDebug(wxT("LB_SETITEMDATA failed"));

+    }

 }
 
 // Return number of selections and an array of selected integers
 }
 
 // Return number of selections and an array of selected integers


@@ -453,7 +377,7 @@ int wxListBox::GetSelections(wxArrayInt& aSelections) const
         int countSel = ListBox_GetSelCount(GetHwnd());
         if ( countSel == LB_ERR )
         {
         int countSel = ListBox_GetSelCount(GetHwnd());
         if ( countSel == LB_ERR )
         {

-            wxLogDebug(_T("ListBox_GetSelCount failed"));
+            wxLogDebug(wxT("ListBox_GetSelCount failed"));

         }
         else if ( countSel != 0 )
         {
         }
         else if ( countSel != 0 )
         {


@@ -511,45 +435,63 @@ wxString wxListBox::GetString(unsigned int n) const
     return result;
 }
 
     return result;
 }
 

-void
-wxListBox::DoInsertItems(const wxArrayString& items, unsigned int pos)
+int wxListBox::DoInsertItems(const wxArrayStringsAdapter & items,
+                             unsigned int pos,
+                             void **clientData,
+                             wxClientDataType type)

 {
 {

-    wxCHECK_RET( IsValidInsert(pos),
-                 wxT("invalid index in wxListBox::InsertItems") );
+    MSWAllocStorage(items, LB_INITSTORAGE);
+
+    const bool append = pos == GetCount();
+
+    // we must use CB_ADDSTRING when appending as only it works correctly for
+    // the sorted controls
+    const unsigned msg = append ? LB_ADDSTRING : LB_INSERTSTRING;

 
 

-    unsigned int nItems = items.GetCount();
-    for ( unsigned int i = 0; i < nItems; i++ )
+    if ( append )
+        pos = 0;
+
+    int n = wxNOT_FOUND;
+
+    const unsigned int numItems = items.GetCount();
+    for ( unsigned int i = 0; i < numItems; i++ )

     {
     {

-        int idx = ListBox_InsertString(GetHwnd(), i + pos, items[i]);
+        n = MSWInsertOrAppendItem(pos, items[i], msg);
+        if ( n == wxNOT_FOUND )
+            return n;
+
+        if ( !append )
+            pos++;
+
+        ++m_noItems;

 
 #if wxUSE_OWNER_DRAWN
 
 #if wxUSE_OWNER_DRAWN

-        if ( m_windowStyle & wxLB_OWNERDRAW )
+        if ( HasFlag(wxLB_OWNERDRAW) )

         {
         {

-            wxOwnerDrawn *pNewItem = CreateLboxItem(idx);
+            wxOwnerDrawn *pNewItem = CreateLboxItem(n);

             pNewItem->SetName(items[i]);
             pNewItem->SetFont(GetFont());
             pNewItem->SetName(items[i]);
             pNewItem->SetFont(GetFont());

-            m_aItems.Insert(pNewItem, idx);
-
-            ListBox_SetItemData(GetHwnd(), idx, pNewItem);
+            m_aItems.Insert(pNewItem, n);

         }
         }

-#else
-        wxUnusedVar(idx);

 #endif // wxUSE_OWNER_DRAWN
 #endif // wxUSE_OWNER_DRAWN

+        AssignNewItemClientData(n, clientData, i, type);

     }
 
     }
 

-    m_noItems += nItems;
+    m_updateHorizontalExtent = true;

 
 

-    SetHorizontalExtent();
+    UpdateOldSelections();
+
+    return n;

 }
 
 int wxListBox::DoListHitTest(const wxPoint& point) const
 {
 }
 
 int wxListBox::DoListHitTest(const wxPoint& point) const
 {

-    LRESULT lRes =  ::SendMessage(GetHwnd(), LB_ITEMFROMPOINT,
-                                  0L, MAKELONG(point.x, point.y));
+    LRESULT lRes = ::SendMessage(GetHwnd(), LB_ITEMFROMPOINT,
+                                 0, MAKELPARAM(point.x, point.y));

 
     // non zero high-order word means that this item is outside of the client
     // area, IOW the point is outside of the listbox
 
     // non zero high-order word means that this item is outside of the client
     // area, IOW the point is outside of the listbox

-    return HIWORD(lRes) ? wxNOT_FOUND : lRes;
+    return HIWORD(lRes) ? wxNOT_FOUND : LOWORD(lRes);

 }
 
 void wxListBox::SetString(unsigned int n, const wxString& s)
 }
 
 void wxListBox::SetString(unsigned int n, const wxString& s)


@@ -562,9 +504,9 @@ void wxListBox::SetString(unsigned int n, const wxString& s)
 
     void *oldData = NULL;
     wxClientData *oldObjData = NULL;
 
     void *oldData = NULL;
     wxClientData *oldObjData = NULL;

-    if ( m_clientDataItemsType == wxClientData_Void )
+    if ( HasClientUntypedData() )

         oldData = GetClientData(n);
         oldData = GetClientData(n);

-    else if ( m_clientDataItemsType == wxClientData_Object )
+    else if ( HasClientObjectData() )

         oldObjData = GetClientObject(n);
 
     // delete and recreate it
         oldObjData = GetClientObject(n);
 
     // delete and recreate it


@@ -574,7 +516,7 @@ void wxListBox::SetString(unsigned int n, const wxString& s)
     if ( n == (m_noItems - 1) )
         newN = -1;
 
     if ( n == (m_noItems - 1) )
         newN = -1;
 

-    ListBox_InsertString(GetHwnd(), newN, s);
+    ListBox_InsertString(GetHwnd(), newN, s.wx_str());

 
     // restore the client data
     if ( oldData )
 
     // restore the client data
     if ( oldData )


@@ -587,9 +529,6 @@ void wxListBox::SetString(unsigned int n, const wxString& s)
     {
         // update item's text
         m_aItems[n]->SetName(s);
     {
         // update item's text
         m_aItems[n]->SetName(s);

-
-        // reassign the item's data
-        ListBox_SetItemData(GetHwnd(), n, m_aItems[n]);

     }
 #endif  //USE_OWNER_DRAWN
 
     }
 #endif  //USE_OWNER_DRAWN
 


@@ -597,7 +536,7 @@ void wxListBox::SetString(unsigned int n, const wxString& s)
     if ( wasSelected )
         Select(n);
 
     if ( wasSelected )
         Select(n);
 

-    SetHorizontalExtent();
+    m_updateHorizontalExtent = true;

 }
 
 unsigned int wxListBox::GetCount() const
 }
 
 unsigned int wxListBox::GetCount() const


@@ -658,7 +597,7 @@ void wxListBox::SetHorizontalExtent(const wxString& s)
     //else: it shouldn't change
 }
 
     //else: it shouldn't change
 }
 

-wxSize wxListBox::DoGetBestSize() const
+wxSize wxListBox::DoGetBestClientSize() const

 {
     // find the widest string
     int wLine;
 {
     // find the widest string
     int wLine;


@@ -677,22 +616,17 @@ wxSize wxListBox::DoGetBestSize() const
         wListbox = 100;
 
     // the listbox should be slightly larger than the widest string
         wListbox = 100;
 
     // the listbox should be slightly larger than the widest string

-    int cx, cy;
-    wxGetCharSize(GetHWND(), &cx, &cy, GetFont());
-
-    wListbox += 3*cx;
+    wListbox += 3*GetCharWidth();

 
 

-    // Add room for the scrollbar
+    // add room for the scrollbar

     wListbox += wxSystemSettings::GetMetric(wxSYS_VSCROLL_X);
 
     // don't make the listbox too tall (limit height to 10 items) but don't
     // make it too small neither
     wListbox += wxSystemSettings::GetMetric(wxSYS_VSCROLL_X);
 
     // don't make the listbox too tall (limit height to 10 items) but don't
     // make it too small neither

-    int hListbox = EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy)*
+    int hListbox = SendMessage(GetHwnd(), LB_GETITEMHEIGHT, 0, 0)*

                     wxMin(wxMax(m_noItems, 3), 10);
 
                     wxMin(wxMax(m_noItems, 3), 10);
 

-    wxSize best(wListbox, hListbox);
-    CacheBestSize(best);
-    return best;
+    return wxSize(wListbox, hListbox);

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


@@ -701,14 +635,25 @@ wxSize wxListBox::DoGetBestSize() const
 
 bool wxListBox::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
 {
 
 bool wxListBox::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
 {

+    if ((param == LBN_SELCHANGE) && HasMultipleSelection())
+    {
+        CalcAndSendEvent();
+        return true;
+    }
+

     wxEventType evtType;
     wxEventType evtType;

+    int n;

     if ( param == LBN_SELCHANGE )
     {
         evtType = wxEVT_COMMAND_LISTBOX_SELECTED;
     if ( param == LBN_SELCHANGE )
     {
         evtType = wxEVT_COMMAND_LISTBOX_SELECTED;

+        n = SendMessage(GetHwnd(), LB_GETCARETINDEX, 0, 0);
+
+        // NB: conveniently enough, LB_ERR is the same as wxNOT_FOUND

     }
     else if ( param == LBN_DBLCLK )
     {
         evtType = wxEVT_COMMAND_LISTBOX_DOUBLECLICKED;
     }
     else if ( param == LBN_DBLCLK )
     {
         evtType = wxEVT_COMMAND_LISTBOX_DOUBLECLICKED;

+        n = HitTest(ScreenToClient(wxGetMousePosition()));

     }
     else
     {
     }
     else
     {


@@ -716,25 +661,22 @@ bool wxListBox::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
         return false;
     }
 
         return false;
     }
 

-    wxCommandEvent event(evtType, m_windowId);
-    event.SetEventObject( this );
-

     // retrieve the affected item
     // retrieve the affected item

-    int n = SendMessage(GetHwnd(), LB_GETCARETINDEX, 0, 0);
-    if ( n != LB_ERR )
-    {
-        if ( HasClientObjectData() )
-            event.SetClientObject( GetClientObject(n) );
-        else if ( HasClientUntypedData() )
-            event.SetClientData( GetClientData(n) );
+    if ( n == wxNOT_FOUND )
+        return false;

 
 

-        event.SetString(GetString(n));
-        event.SetExtraLong( HasMultipleSelection() ? IsSelected(n) : true );
-    }
+    wxCommandEvent event(evtType, m_windowId);
+    event.SetEventObject(this);
+
+    if ( HasClientObjectData() )
+        event.SetClientObject( GetClientObject(n) );
+    else if ( HasClientUntypedData() )
+        event.SetClientData( GetClientData(n) );

 
 

+    event.SetString(GetString(n));

     event.SetInt(n);
 
     event.SetInt(n);
 

-    return GetEventHandler()->ProcessEvent(event);
+    return HandleWindowEvent(event);

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


@@ -792,24 +734,16 @@ bool wxListBox::MSWOnDraw(WXDRAWITEMSTRUCT *item)
     wxCHECK( ((m_windowStyle & wxLB_OWNERDRAW) == wxLB_OWNERDRAW), false );
 
     DRAWITEMSTRUCT *pStruct = (DRAWITEMSTRUCT *)item;
     wxCHECK( ((m_windowStyle & wxLB_OWNERDRAW) == wxLB_OWNERDRAW), false );
 
     DRAWITEMSTRUCT *pStruct = (DRAWITEMSTRUCT *)item;

-    UINT itemID = pStruct->itemID;

 
     // the item may be -1 for an empty listbox
 
     // the item may be -1 for an empty listbox

-    if ( itemID == (UINT)-1 )
+    if ( pStruct->itemID == (UINT)-1 )

         return false;
 
         return false;
 

-    long data = ListBox_GetItemData(GetHwnd(), pStruct->itemID);
-
-    wxCHECK( data && (data != LB_ERR), false );
-
-    wxListBoxItem *pItem = (wxListBoxItem *)data;
+    wxListBoxItem *pItem = (wxListBoxItem *)m_aItems[pStruct->itemID];

 
     wxDCTemp dc((WXHDC)pStruct->hDC);
 
     wxDCTemp dc((WXHDC)pStruct->hDC);

-    wxPoint pt1(pStruct->rcItem.left, pStruct->rcItem.top);
-    wxPoint pt2(pStruct->rcItem.right, pStruct->rcItem.bottom);
-    wxRect rect(pt1, pt2);

 
 

-    return pItem->OnDrawItem(dc, rect,
+    return pItem->OnDrawItem(dc, wxRectFromRECT(pStruct->rcItem),

                              (wxOwnerDrawn::wxODAction)pStruct->itemAction,
                              (wxOwnerDrawn::wxODStatus)pStruct->itemState);
 }
                              (wxOwnerDrawn::wxODAction)pStruct->itemAction,
                              (wxOwnerDrawn::wxODStatus)pStruct->itemState);
 }