use (new) safer GetTraitsIfExists() in wxMutexGuiEnter/Leave() to avoid crashing...

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

diff --git a/src/msw/listbox.cpp b/src/msw/listbox.cpp
index 93c6f176896511782aabc64a77d582a6c2b30919..9252783bed0406b208a24047ddfa1aea529f7294 100644 (file)
--- a/src/msw/listbox.cpp
+++ b/src/msw/listbox.cpp
@@ -1,18 +1,14 @@
 ///////////////////////////////////////////////////////////////////////////////
 ///////////////////////////////////////////////////////////////////////////////

-// Name:        listbox.cpp
+// Name:        src/msw/listbox.cpp

 // Purpose:     wxListBox
 // Author:      Julian Smart
 // Modified by: Vadim Zeitlin (owner drawn stuff)
 // Created:
 // RCS-ID:      $Id$
 // Copyright:   (c) Julian Smart
 // Purpose:     wxListBox
 // Author:      Julian Smart
 // Modified by: Vadim Zeitlin (owner drawn stuff)
 // Created:
 // RCS-ID:      $Id$
 // Copyright:   (c) Julian Smart

-// Licence:     wxWindows license
+// Licence:     wxWindows licence

 ///////////////////////////////////////////////////////////////////////////////
 
 ///////////////////////////////////////////////////////////////////////////////
 

-#ifdef __GNUG__
-    #pragma implementation "listbox.h"
-#endif
-

 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 
 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 


@@ -20,71 +16,97 @@
     #pragma hdrstop
 #endif
 
     #pragma hdrstop
 #endif
 

-#include "wx/window.h"
-#include "wx/msw/private.h"
+#if wxUSE_LISTBOX

 
 

-#ifndef WX_PRECOMP

 #include "wx/listbox.h"
 #include "wx/listbox.h"

-#include "wx/settings.h"
-#include "wx/brush.h"
-#include "wx/font.h"
-#include "wx/dc.h"
-#include "wx/utils.h"
-#endif
-
-#include <windowsx.h>

 
 

-#ifdef __WXWINE__
-  #if defined(GetWindowStyle)
-    #undef GetWindowStyle
-  #endif
+#ifndef WX_PRECOMP
+    #include "wx/dynarray.h"
+    #include "wx/settings.h"
+    #include "wx/brush.h"
+    #include "wx/font.h"
+    #include "wx/dc.h"
+    #include "wx/utils.h"
+    #include "wx/log.h"
+    #include "wx/window.h"

 #endif
 
 #endif
 

-#include "wx/dynarray.h"
-#include "wx/log.h"
+#include "wx/msw/private.h"
+#include "wx/msw/dc.h"
+
+#include <windowsx.h>

 
 #if wxUSE_OWNER_DRAWN
     #include  "wx/ownerdrw.h"
 #endif
 
 
 #if wxUSE_OWNER_DRAWN
     #include  "wx/ownerdrw.h"
 #endif
 

-#ifndef __TWIN32__
-    #if defined(__GNUWIN32__)
-        #ifndef wxUSE_NORLANDER_HEADERS
-            #include "wx/msw/gnuwin32/extra.h"
-        #endif
-    #endif
-#endif
-
-#ifdef __WXWINE__
-  #ifndef ListBox_SetItemData
-    #define ListBox_SetItemData(hwndCtl, index, data) \
-      ((int)(DWORD)SendMessage((hwndCtl), LB_SETITEMDATA, (WPARAM)(int)(index), (LPARAM)(data)))
-  #endif
-  #ifndef ListBox_GetHorizontalExtent
-    #define ListBox_GetHorizontalExtent(hwndCtl) \
-      ((int)(DWORD)SendMessage((hwndCtl), LB_GETHORIZONTALEXTENT, 0L, 0L))
-  #endif
-  #ifndef ListBox_GetSelCount
-    #define ListBox_GetSelCount(hwndCtl) \
-      ((int)(DWORD)SendMessage((hwndCtl), LB_GETSELCOUNT, 0L, 0L))
-  #endif
-  #ifndef ListBox_GetSelItems
-    #define ListBox_GetSelItems(hwndCtl, cItems, lpItems) \
-      ((int)(DWORD)SendMessage((hwndCtl), LB_GETSELITEMS, (WPARAM)(int)(cItems), (LPARAM)(int *)(lpItems)))
-  #endif
-  #ifndef ListBox_GetTextLen
-    #define ListBox_GetTextLen(hwndCtl, index) \
-      ((int)(DWORD)SendMessage((hwndCtl), LB_GETTEXTLEN, (WPARAM)(int)(index), 0L))
-  #endif
-  #ifndef ListBox_GetText
-    #define ListBox_GetText(hwndCtl, index, lpszBuffer) \
-      ((int)(DWORD)SendMessage((hwndCtl), LB_GETTEXT, (WPARAM)(int)(index), (LPARAM)(LPCTSTR)(lpszBuffer)))
-  #endif
+#if wxUSE_EXTENDED_RTTI
+WX_DEFINE_FLAGS( wxListBoxStyle )
+
+wxBEGIN_FLAGS( wxListBoxStyle )
+    // new style border flags, we put them first to
+    // use them for streaming out
+    wxFLAGS_MEMBER(wxBORDER_SIMPLE)
+    wxFLAGS_MEMBER(wxBORDER_SUNKEN)
+    wxFLAGS_MEMBER(wxBORDER_DOUBLE)
+    wxFLAGS_MEMBER(wxBORDER_RAISED)
+    wxFLAGS_MEMBER(wxBORDER_STATIC)
+    wxFLAGS_MEMBER(wxBORDER_NONE)
+
+    // old style border flags
+    wxFLAGS_MEMBER(wxSIMPLE_BORDER)
+    wxFLAGS_MEMBER(wxSUNKEN_BORDER)
+    wxFLAGS_MEMBER(wxDOUBLE_BORDER)
+    wxFLAGS_MEMBER(wxRAISED_BORDER)
+    wxFLAGS_MEMBER(wxSTATIC_BORDER)
+    wxFLAGS_MEMBER(wxBORDER)
+
+    // standard window styles
+    wxFLAGS_MEMBER(wxTAB_TRAVERSAL)
+    wxFLAGS_MEMBER(wxCLIP_CHILDREN)
+    wxFLAGS_MEMBER(wxTRANSPARENT_WINDOW)
+    wxFLAGS_MEMBER(wxWANTS_CHARS)
+    wxFLAGS_MEMBER(wxFULL_REPAINT_ON_RESIZE)
+    wxFLAGS_MEMBER(wxALWAYS_SHOW_SB )
+    wxFLAGS_MEMBER(wxVSCROLL)
+    wxFLAGS_MEMBER(wxHSCROLL)
+
+    wxFLAGS_MEMBER(wxLB_SINGLE)
+    wxFLAGS_MEMBER(wxLB_MULTIPLE)
+    wxFLAGS_MEMBER(wxLB_EXTENDED)
+    wxFLAGS_MEMBER(wxLB_HSCROLL)
+    wxFLAGS_MEMBER(wxLB_ALWAYS_SB)
+    wxFLAGS_MEMBER(wxLB_NEEDED_SB)
+    wxFLAGS_MEMBER(wxLB_SORT)
+
+wxEND_FLAGS( wxListBoxStyle )
+
+IMPLEMENT_DYNAMIC_CLASS_XTI(wxListBox, wxControlWithItems,"wx/listbox.h")
+
+wxBEGIN_PROPERTIES_TABLE(wxListBox)
+    wxEVENT_PROPERTY( Select , wxEVT_COMMAND_LISTBOX_SELECTED , wxCommandEvent )
+    wxEVENT_PROPERTY( DoubleClick , wxEVT_COMMAND_LISTBOX_DOUBLECLICKED , wxCommandEvent )
+
+    wxPROPERTY( Font , wxFont , SetFont , GetFont  , EMPTY_MACROVALUE, 0 /*flags*/ , wxT("Helpstring") , wxT("group"))
+    wxPROPERTY_COLLECTION( Choices , wxArrayString , wxString , AppendString , GetStrings, 0 /*flags*/ , wxT("Helpstring") , wxT("group") )
+    wxPROPERTY( Selection ,int, SetSelection, GetSelection, EMPTY_MACROVALUE , 0 /*flags*/ , wxT("Helpstring") , wxT("group") )
+    wxPROPERTY_FLAGS( WindowStyle , wxListBoxStyle , long , SetWindowStyleFlag , GetWindowStyleFlag , EMPTY_MACROVALUE , 0 /*flags*/ , wxT("Helpstring") , wxT("group")) // style
+wxEND_PROPERTIES_TABLE()
+
+wxBEGIN_HANDLERS_TABLE(wxListBox)
+wxEND_HANDLERS_TABLE()
+
+wxCONSTRUCTOR_4( wxListBox , wxWindow* , Parent , wxWindowID , Id , wxPoint , Position , wxSize , Size )
+#else
+IMPLEMENT_DYNAMIC_CLASS(wxListBox, wxControlWithItems)

 #endif
 
 #endif
 

-#if !USE_SHARED_LIBRARY
-    IMPLEMENT_DYNAMIC_CLASS(wxListBox, wxControl)
-#endif
+/*
+TODO PROPERTIES
+    selection
+    content
+        item
+*/

 
 // ============================================================================
 // list box item declaration and implementation
 
 // ============================================================================
 // list box item declaration and implementation


@@ -95,16 +117,16 @@
 class wxListBoxItem : public wxOwnerDrawn
 {
 public:
 class wxListBoxItem : public wxOwnerDrawn
 {
 public:

-    wxListBoxItem(const wxString& str = "");
+    wxListBoxItem(const wxString& str = wxEmptyString);

 };
 
 };
 

-wxListBoxItem::wxListBoxItem(const wxString& str) : wxOwnerDrawn(str, FALSE)
+wxListBoxItem::wxListBoxItem(const wxString& str) : wxOwnerDrawn(str, false)

 {
     // no bitmaps/checkmarks
     SetMarginWidth(0);
 }
 
 {
     // no bitmaps/checkmarks
     SetMarginWidth(0);
 }
 

-wxOwnerDrawn *wxListBox::CreateItem(size_t n)
+wxOwnerDrawn *wxListBox::CreateLboxItem(size_t WXUNUSED(n))

 {
     return new wxListBoxItem();
 }
 {
     return new wxListBoxItem();
 }


@@ -123,7 +145,7 @@ wxOwnerDrawn *wxListBox::CreateItem(size_t 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,


@@ -136,107 +158,102 @@ bool wxListBox::Create(wxWindow *parent,
                        const wxString& name)
 {
     m_noItems = 0;
                        const wxString& name)
 {
     m_noItems = 0;

-    m_hWnd = 0;
-    m_selected = 0;
-
-    SetName(name);
-    SetValidator(validator);
-
-    if (parent)
-        parent->AddChild(this);
-
-    wxSystemSettings settings;
-    SetBackgroundColour(settings.GetSystemColour(wxSYS_COLOUR_WINDOW));
-    SetForegroundColour(parent->GetForegroundColour());
-
-    m_windowId = ( id == -1 ) ? (int)NewControlId() : id;
+    m_updateHorizontalExtent = false;

 
 

-    int x = pos.x;
-    int y = pos.y;
-    int width = size.x;
-    int height = size.y;
-    m_windowStyle = style;
+    // initialize base class fields
+    if ( !CreateControl(parent, id, pos, size, style, validator, name) )
+        return false;

 
 

-    DWORD wstyle = WS_VISIBLE | WS_VSCROLL | WS_TABSTOP |
-                   LBS_NOTIFY | LBS_HASSTRINGS;
-    if (m_windowStyle & wxLB_MULTIPLE)
-        wstyle |= LBS_MULTIPLESEL;
-    else if (m_windowStyle & wxLB_EXTENDED)
-        wstyle |= LBS_EXTENDEDSEL;
-
-    if (m_windowStyle & wxLB_ALWAYS_SB)
-        wstyle |= LBS_DISABLENOSCROLL;
-    if (m_windowStyle & wxLB_HSCROLL)
-        wstyle |= WS_HSCROLL;
-    if (m_windowStyle & wxLB_SORT)
-        wstyle |= LBS_SORT;
-
-#if wxUSE_OWNER_DRAWN
-    if ( m_windowStyle & wxLB_OWNERDRAW ) {
-        // we don't support LBS_OWNERDRAWVARIABLE yet
-        wstyle |= LBS_OWNERDRAWFIXED;
+    // create the native control
+    if ( !MSWCreateControl(_T("LISTBOX"), wxEmptyString, pos, size) )
+    {
+        // control creation failed
+        return false;

     }
     }

-#endif
-
-    // Without this style, you get unexpected heights, so e.g. constraint layout
-    // doesn't work properly
-    wstyle |= LBS_NOINTEGRALHEIGHT;

 
 

-    bool want3D;
-    WXDWORD exStyle = Determine3DEffects(WS_EX_CLIENTEDGE, &want3D);
-
-    // Even with extended styles, need to combine with WS_BORDER for them to
-    // look right.
-    if ( want3D || wxStyleHasBorder(m_windowStyle) )
+    // initialize the contents
+    for ( int i = 0; i < n; i++ )

     {
     {

-        wstyle |= WS_BORDER;
+        Append(choices[i]);

     }
 
     }
 

-    m_hWnd = (WXHWND)::CreateWindowEx(exStyle, wxT("LISTBOX"), NULL,
-            wstyle | WS_CHILD,
-            0, 0, 0, 0,
-            (HWND)parent->GetHWND(), (HMENU)m_windowId,
-            wxGetInstance(), NULL);
+    // now we can compute our best size correctly, so do it if necessary
+    SetInitialSize(size);

 
 

-    wxCHECK_MSG( m_hWnd, FALSE, wxT("Failed to create listbox") );
+    return true;
+}

 
 

-#if wxUSE_CTL3D
-    if (want3D)
-    {
-        Ctl3dSubclassCtl(GetHwnd());
-        m_useCtl3D = TRUE;
-    }
-#endif
+bool wxListBox::Create(wxWindow *parent,
+                       wxWindowID id,
+                       const wxPoint& pos,
+                       const wxSize& size,
+                       const wxArrayString& choices,
+                       long style,
+                       const wxValidator& validator,
+                       const wxString& name)
+{
+    wxCArrayString chs(choices);
+    return Create(parent, id, pos, size, chs.GetCount(), chs.GetStrings(),
+                  style, validator, name);
+}

 
 

-    // Subclass again to catch messages
-    SubclassWin(m_hWnd);
+wxListBox::~wxListBox()
+{
+    Clear();
+}

 
 

-    size_t ui;
-    for (ui = 0; ui < (size_t)n; ui++) {
-        Append(choices[ui]);
-    }
+WXDWORD wxListBox::MSWGetStyle(long style, WXDWORD *exstyle) const
+{
+    WXDWORD msStyle = wxControl::MSWGetStyle(style, exstyle);

 
 

-    if ( (m_windowStyle & wxLB_MULTIPLE) == 0 )
-        SendMessage(GetHwnd(), LB_SETCURSEL, 0, 0);
+    // always show the vertical scrollbar if necessary -- otherwise it is
+    // impossible to use the control with the mouse
+    msStyle |= WS_VSCROLL;

 
 

-    SetFont(parent->GetFont());
+    // we always want to get the notifications
+    msStyle |= LBS_NOTIFY;

 
 

-    SetSize(x, y, width, height);
+    // without this style, you get unexpected heights, so e.g. constraint
+    // layout doesn't work properly
+    msStyle |= LBS_NOINTEGRALHEIGHT;

 
 

-    Show(TRUE);
+    wxASSERT_MSG( !(style & wxLB_MULTIPLE) || !(style & wxLB_EXTENDED),
+                  _T("only one of listbox selection modes can be specified") );

 
 

-    return TRUE;
-}
+    if ( style & wxLB_MULTIPLE )
+        msStyle |= LBS_MULTIPLESEL;
+    else if ( style & wxLB_EXTENDED )
+        msStyle |= LBS_EXTENDEDSEL;

 
 

-wxListBox::~wxListBox()
-{
-    Free();
+    if ( m_windowStyle & wxLB_ALWAYS_SB )
+        msStyle |= LBS_DISABLENOSCROLL;
+    if ( m_windowStyle & wxLB_HSCROLL )
+        msStyle |= WS_HSCROLL;
+    if ( m_windowStyle & wxLB_SORT )
+        msStyle |= LBS_SORT;
+
+#if wxUSE_OWNER_DRAWN && !defined(__WXWINCE__)
+    if ( m_windowStyle & wxLB_OWNERDRAW )
+    {
+        // we don't support LBS_OWNERDRAWVARIABLE yet and we also always put
+        // the strings in the listbox for simplicity even though we could have
+        // avoided it in this case
+        msStyle |= LBS_OWNERDRAWFIXED | LBS_HASSTRINGS;
+    }
+#endif // wxUSE_OWNER_DRAWN
+
+    return msStyle;

 }
 
 }
 

-void wxListBox::SetupColours()
+void wxListBox::OnInternalIdle()

 {
 {

-    SetBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_WINDOW));
-    SetForegroundColour(GetParent()->GetForegroundColour());
+    wxWindow::OnInternalIdle();
+    
+    if (m_updateHorizontalExtent)
+    {
+        SetHorizontalExtent(wxEmptyString);
+        m_updateHorizontalExtent = false;
+    }

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


@@ -245,116 +262,49 @@ void wxListBox::SetupColours()
 
 void wxListBox::DoSetFirstItem(int N)
 {
 
 void wxListBox::DoSetFirstItem(int N)
 {

-    wxCHECK_RET( N >= 0 && N < m_noItems,
+    wxCHECK_RET( IsValid(N),

                  wxT("invalid index in wxListBox::SetFirstItem") );
 
     SendMessage(GetHwnd(), LB_SETTOPINDEX, (WPARAM)N, (LPARAM)0);
 }
 
                  wxT("invalid index in wxListBox::SetFirstItem") );
 
     SendMessage(GetHwnd(), LB_SETTOPINDEX, (WPARAM)N, (LPARAM)0);
 }
 

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

 {
 {

-    wxCHECK_RET( N >= 0 && N < m_noItems,
+    wxCHECK_RET( IsValid(n),

                  wxT("invalid index in wxListBox::Delete") );
 
                  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);
+    SendMessage(GetHwnd(), LB_DELETESTRING, n, 0);

     m_noItems--;
 
     m_noItems--;
 

-    SetHorizontalExtent("");
-}
-
-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 = CreateItem(index); // dummy argument
-        pNewItem->SetName(item);
-        m_aItems.Add(pNewItem);
-        ListBox_SetItemData(GetHwnd(), index, pNewItem);
-        pNewItem->SetFont(GetFont());
-    }
-#endif
-
-    SetHorizontalExtent(item);
+    // SetHorizontalExtent(wxEmptyString); can be slow
+    m_updateHorizontalExtent = true;

 
 

-    return index;
+    UpdateOldSelections();

 }
 
 }
 

-void wxListBox::DoSetItems(const wxArrayString& choices, void** clientData)
+int wxListBox::FindString(const wxString& s, bool bCase) const

 {
 {

-    ShowWindow(GetHwnd(), SW_HIDE);
-
-    ListBox_ResetContent(GetHwnd());
+    // back to base class search for not native search type
+    if (bCase)
+       return wxItemContainerImmutable::FindString( s, bCase );

 
 

-    m_noItems = choices.GetCount();
-    int i;
-    for (i = 0; i < m_noItems; i++)
-    {
-        ListBox_AddString(GetHwnd(), choices[i]);
-        if ( clientData )
-        {
-#if wxUSE_OWNER_DRAWN
-            wxASSERT_MSG(clientData[i] == NULL,
-                         wxT("Can't use client data with owner-drawn listboxes"));
-#else // !wxUSE_OWNER_DRAWN
-            ListBox_SetItemData(GetHwnd(), i, clientData[i]);
-#endif // wxUSE_OWNER_DRAWN/!wxUSE_OWNER_DRAWN
-        }
-    }
-
-#if wxUSE_OWNER_DRAWN
-    if ( m_windowStyle & wxLB_OWNERDRAW ) {
-        // first delete old items
-        size_t ui = m_aItems.Count();
-        while ( ui-- != 0 ) {
-            delete m_aItems[ui];
-        }
-        m_aItems.Empty();
-
-        // then create new ones
-        for ( ui = 0; ui < (size_t)m_noItems; ui++ ) {
-            wxOwnerDrawn *pNewItem = CreateItem(ui);
-            pNewItem->SetName(choices[ui]);
-            m_aItems.Add(pNewItem);
-            ListBox_SetItemData(GetHwnd(), ui, pNewItem);
-        }
-    }
-#endif // wxUSE_OWNER_DRAWN
-
-    SetHorizontalExtent();
-
-    ShowWindow(GetHwnd(), SW_SHOW);
-}
-
-int wxListBox::FindString(const wxString& s) const
-{
-    int pos = ListBox_FindStringExact(GetHwnd(), (WPARAM)-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()


@@ -362,27 +312,14 @@ void wxListBox::Free()
 #if wxUSE_OWNER_DRAWN
     if ( m_windowStyle & wxLB_OWNERDRAW )
     {
 #if wxUSE_OWNER_DRAWN
     if ( m_windowStyle & wxLB_OWNERDRAW )
     {

-        size_t uiCount = m_aItems.Count();
-        while ( uiCount-- != 0 ) {
-            delete m_aItems[uiCount];
-        }
-
-        m_aItems.Clear();
+        WX_CLEAR_ARRAY(m_aItems);

     }
     }

-    else

 #endif // wxUSE_OWNER_DRAWN
 #endif // wxUSE_OWNER_DRAWN

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

 }
 
 }
 

-void wxListBox::SetSelection(int N, bool select)
+void wxListBox::DoSetSelection(int N, bool select)

 {
 {

-    wxCHECK_RET( N >= 0 && N < m_noItems,
+    wxCHECK_RET( N == wxNOT_FOUND || IsValid(N),

                  wxT("invalid index in wxListBox::SetSelection") );
 
     if ( HasMultipleSelection() )
                  wxT("invalid index in wxListBox::SetSelection") );
 
     if ( HasMultipleSelection() )


@@ -393,37 +330,29 @@ void wxListBox::SetSelection(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
 {

-    wxCHECK_MSG( N >= 0 && N < m_noItems, FALSE,
+    wxCHECK_MSG( IsValid(N), false,

                  wxT("invalid index in wxListBox::Selected") );
 
                  wxT("invalid index in wxListBox::Selected") );
 

-    return SendMessage(GetHwnd(), LB_GETSEL, N, 0) == 0 ? FALSE : TRUE;
+    return SendMessage(GetHwnd(), LB_GETSEL, N, 0) == 0 ? false : true;

 }
 
 }
 

-wxClientData* wxListBox::DoGetItemClientObject(int n) const
+void *wxListBox::DoGetItemClientData(unsigned int n) const

 {
 {

-    return (wxClientData *)DoGetItemClientData(n);
-}
-
-void *wxListBox::DoGetItemClientData(int n) const
-{
-    wxCHECK_MSG( n >= 0 && n < m_noItems, NULL,
+    wxCHECK_MSG( IsValid(n), NULL,

                  wxT("invalid index in wxListBox::GetClientData") );
 
     return (void *)SendMessage(GetHwnd(), LB_GETITEMDATA, n, 0);
 }
 
                  wxT("invalid index in wxListBox::GetClientData") );
 
     return (void *)SendMessage(GetHwnd(), LB_GETITEMDATA, n, 0);
 }
 

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

 {
 {

-    wxCHECK_RET( n >= 0 && n < m_noItems,
+    wxCHECK_RET( IsValid(n),

                  wxT("invalid index in wxListBox::SetClientData") );
 
 #if wxUSE_OWNER_DRAWN
                  wxT("invalid index in wxListBox::SetClientData") );
 
 #if wxUSE_OWNER_DRAWN


@@ -439,11 +368,6 @@ void wxListBox::DoSetItemClientData(int n, void *clientData)
         wxLogDebug(wxT("LB_SETITEMDATA failed"));
 }
 
         wxLogDebug(wxT("LB_SETITEMDATA failed"));
 }
 

-bool wxListBox::HasMultipleSelection() const
-{
-    return (m_windowStyle & wxLB_MULTIPLE) || (m_windowStyle & wxLB_EXTENDED);
-}
-

 // Return number of selections and an array of selected integers
 int wxListBox::GetSelections(wxArrayInt& aSelections) const
 {
 // Return number of selections and an array of selected integers
 int wxListBox::GetSelections(wxArrayInt& aSelections) const
 {


@@ -451,27 +375,39 @@ int wxListBox::GetSelections(wxArrayInt& aSelections) const
 
     if ( HasMultipleSelection() )
     {
 
     if ( HasMultipleSelection() )
     {

-        int no_sel = ListBox_GetSelCount(GetHwnd());
-        if (no_sel != 0) {
-            int *selections = new int[no_sel];
-            int rc = ListBox_GetSelItems(GetHwnd(), no_sel, selections);
-
-            wxCHECK_MSG(rc != LB_ERR, -1, wxT("ListBox_GetSelItems failed"));
-
-            aSelections.Alloc(no_sel);
-            for ( int n = 0; n < no_sel; n++ )
-                aSelections.Add(selections[n]);
+        int countSel = ListBox_GetSelCount(GetHwnd());
+        if ( countSel == LB_ERR )
+        {
+            wxLogDebug(_T("ListBox_GetSelCount failed"));
+        }
+        else if ( countSel != 0 )
+        {
+            int *selections = new int[countSel];
+
+            if ( ListBox_GetSelItems(GetHwnd(),
+                                     countSel, selections) == LB_ERR )
+            {
+                wxLogDebug(wxT("ListBox_GetSelItems failed"));
+                countSel = -1;
+            }
+            else
+            {
+                aSelections.Alloc(countSel);
+                for ( int n = 0; n < countSel; n++ )
+                    aSelections.Add(selections[n]);
+            }

 
             delete [] selections;
         }
 
 
             delete [] selections;
         }
 

-        return no_sel;
+        return countSel;

     }
     else  // single-selection listbox
     {
     }
     else  // single-selection listbox
     {

-        aSelections.Add(ListBox_GetCurSel(GetHwnd()));
+        if (ListBox_GetCurSel(GetHwnd()) > -1)
+            aSelections.Add(ListBox_GetCurSel(GetHwnd()));

 
 

-        return 1;
+        return aSelections.Count();

     }
 }
 
     }
 }
 


@@ -480,148 +416,191 @@ int wxListBox::GetSelection() const
 {
     wxCHECK_MSG( !HasMultipleSelection(),
                  -1,
 {
     wxCHECK_MSG( !HasMultipleSelection(),
                  -1,

-                 wxT("GetSelection() can't be used with multiple-selection "
-                    "listboxes, use GetSelections() instead.") );
+                 wxT("GetSelection() can't be used with multiple-selection listboxes, use GetSelections() instead.") );

 
     return ListBox_GetCurSel(GetHwnd());
 }
 
 // Find string for position
 
     return ListBox_GetCurSel(GetHwnd());
 }
 
 // Find string for position

-wxString wxListBox::GetString(int N) const
+wxString wxListBox::GetString(unsigned int n) const

 {
 {

-    wxCHECK_MSG( N >= 0 && N < m_noItems, "",
-                 wxT("invalid index in wxListBox::GetClientData") );
+    wxCHECK_MSG( IsValid(n), wxEmptyString,
+                 wxT("invalid index in wxListBox::GetString") );

 
 

-    int len = ListBox_GetTextLen(GetHwnd(), N);
+    int len = ListBox_GetTextLen(GetHwnd(), n);

 
     // +1 for terminating NUL
     wxString result;
 
     // +1 for terminating NUL
     wxString result;

-    ListBox_GetText(GetHwnd(), N, result.GetWriteBuf(len + 1));
-    result.UngetWriteBuf();
+    ListBox_GetText(GetHwnd(), n, (wxChar*)wxStringBuffer(result, len + 1));

 
     return result;
 }
 
 
     return result;
 }
 

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

 {
 {

-    wxCHECK_RET( pos >= 0 && pos <= m_noItems,
-                 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;
+
+    if ( append )
+        pos = 0;
+
+    int n = wxNOT_FOUND;

 
 

-    int nItems = items.GetCount();
-    for ( int i = 0; i < nItems; i++ )
-        ListBox_InsertString(GetHwnd(), i + pos, items[i]);
-    m_noItems += nItems;
+    const unsigned int numItems = items.GetCount();
+    for ( unsigned int i = 0; i < numItems; i++ )
+    {
+        n = MSWInsertOrAppendItem(pos, items[i], msg);
+        if ( n == wxNOT_FOUND )
+            return n;
+
+        if ( !append )
+            pos++;
+
+        ++m_noItems;
+
+#if wxUSE_OWNER_DRAWN
+        if ( HasFlag(wxLB_OWNERDRAW) )
+        {
+            wxOwnerDrawn *pNewItem = CreateLboxItem(n);
+            pNewItem->SetName(items[i]);
+            pNewItem->SetFont(GetFont());
+            m_aItems.Insert(pNewItem, n);

 
 

-    SetHorizontalExtent();
+            ListBox_SetItemData(GetHwnd(), n, pNewItem);
+        }
+#endif // wxUSE_OWNER_DRAWN
+        AssignNewItemClientData(n, clientData, i, type);
+    }
+
+    m_updateHorizontalExtent = true;
+
+    UpdateOldSelections();
+
+    return n;

 }
 
 }
 

-void wxListBox::SetString(int N, const wxString& s)
+int wxListBox::DoListHitTest(const wxPoint& point) const

 {
 {

-    wxCHECK_RET( N >= 0 && N < m_noItems,
+    LRESULT lRes =  ::SendMessage(GetHwnd(), LB_ITEMFROMPOINT,
+                                  0L, MAKELONG(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
+    return HIWORD(lRes) ? wxNOT_FOUND : lRes;
+}
+
+void wxListBox::SetString(unsigned int n, const wxString& s)
+{
+    wxCHECK_RET( IsValid(n),

                  wxT("invalid index in wxListBox::SetString") );
 
     // remember the state of the item
                  wxT("invalid index in wxListBox::SetString") );
 
     // remember the state of the item

-    bool wasSelected = IsSelected(N);
+    bool wasSelected = IsSelected(n);

 
     void *oldData = NULL;
     wxClientData *oldObjData = NULL;
 
     void *oldData = NULL;
     wxClientData *oldObjData = NULL;

-    if ( m_clientDataItemsType == ClientData_Void )
-        oldData = GetClientData(N);
-    else if ( m_clientDataItemsType == ClientData_Object )
-        oldObjData = GetClientObject(N);
+    if ( HasClientUntypedData() )
+        oldData = GetClientData(n);
+    else if ( HasClientObjectData() )
+        oldObjData = GetClientObject(n);

 
     // delete and recreate it
 
     // delete and recreate it

-    SendMessage(GetHwnd(), LB_DELETESTRING, N, 0);
+    SendMessage(GetHwnd(), LB_DELETESTRING, n, 0);

 
 

-    int newN = N;
-    if ( N == m_noItems - 1 )
+    int newN = n;
+    if ( n == (m_noItems - 1) )

         newN = -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 )

-        SetClientData(N, oldData);
+        SetClientData(n, oldData);

     else if ( oldObjData )
     else if ( oldObjData )

-        SetClientObject(N, oldObjData);
-
-    // we may have lost the selection
-    if ( wasSelected )
-        Select(N);
+        SetClientObject(n, oldObjData);

 
 #if wxUSE_OWNER_DRAWN
     if ( m_windowStyle & wxLB_OWNERDRAW )
 
 #if wxUSE_OWNER_DRAWN
     if ( m_windowStyle & wxLB_OWNERDRAW )

+    {

         // update item's text
         // update item's text

-        m_aItems[N]->SetName(s);
+        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

+
+    // we may have lost the selection
+    if ( wasSelected )
+        Select(n);
+
+    m_updateHorizontalExtent = true;

 }
 
 }
 

-int wxListBox::GetCount() const
+unsigned int wxListBox::GetCount() const

 {
     return m_noItems;
 }
 
 // ----------------------------------------------------------------------------
 {
     return m_noItems;
 }
 
 // ----------------------------------------------------------------------------

-// helpers
+// size-related stuff

 // ----------------------------------------------------------------------------
 
 // ----------------------------------------------------------------------------
 

-// Windows-specific code to set the horizontal extent of the listbox, if
-// necessary. If s is non-NULL, it's used to calculate the horizontal extent.
-// Otherwise, all strings are used.

 void wxListBox::SetHorizontalExtent(const wxString& s)
 {
 void wxListBox::SetHorizontalExtent(const wxString& s)
 {

-    // Only necessary if we want a horizontal scrollbar
-    if (!(m_windowStyle & wxHSCROLL))
+    // in any case, our best size could have changed
+    InvalidateBestSize();
+
+    // the rest is only necessary if we want a horizontal scrollbar
+    if ( !HasFlag(wxHSCROLL) )

         return;
         return;

-    TEXTMETRIC lpTextMetric;

 
 

-    if ( !s.IsEmpty() )
-    {
-        int existingExtent = (int)SendMessage(GetHwnd(), LB_GETHORIZONTALEXTENT, 0, 0L);
-        HDC dc = GetWindowDC(GetHwnd());
-        HFONT oldFont = 0;
-        if (GetFont().Ok() && GetFont().GetResourceHandle())
-            oldFont = (HFONT) ::SelectObject(dc, (HFONT) GetFont().GetResourceHandle());
-
-        GetTextMetrics(dc, &lpTextMetric);
-        SIZE extentXY;
-        ::GetTextExtentPoint(dc, (LPTSTR) (const wxChar *)s, s.Length(), &extentXY);
-        int extentX = (int)(extentXY.cx + lpTextMetric.tmAveCharWidth);

 
 

-        if (oldFont)
-            ::SelectObject(dc, oldFont);
+    WindowHDC dc(GetHwnd());
+    SelectInHDC selFont(dc, GetHfontOf(GetFont()));

 
 

-        ReleaseDC(GetHwnd(), dc);
-        if (extentX > existingExtent)
-            SendMessage(GetHwnd(), LB_SETHORIZONTALEXTENT, LOWORD(extentX), 0L);
-    }
-    else
+    TEXTMETRIC lpTextMetric;
+    ::GetTextMetrics(dc, &lpTextMetric);
+
+    int largestExtent = 0;
+    SIZE extentXY;
+
+    if ( s.empty() )

     {
     {

-        int largestExtent = 0;
-        HDC dc = GetWindowDC(GetHwnd());
-        HFONT oldFont = 0;
-        if (GetFont().Ok() && GetFont().GetResourceHandle())
-            oldFont = (HFONT) ::SelectObject(dc, (HFONT) GetFont().GetResourceHandle());
-
-        GetTextMetrics(dc, &lpTextMetric);
-        int i;
-        for (i = 0; i < m_noItems; i++)
+        // set extent to the max length of all strings
+        for ( unsigned int i = 0; i < m_noItems; i++ )

         {
         {

-            int len = (int)SendMessage(GetHwnd(), LB_GETTEXT, i, (LONG)wxBuffer);
-            wxBuffer[len] = 0;
-            SIZE extentXY;
-            ::GetTextExtentPoint(dc, (LPTSTR)wxBuffer, len, &extentXY);
+            const wxString str = GetString(i);
+            ::GetTextExtentPoint32(dc, str.c_str(), str.length(), &extentXY);
+

             int extentX = (int)(extentXY.cx + lpTextMetric.tmAveCharWidth);
             int extentX = (int)(extentXY.cx + lpTextMetric.tmAveCharWidth);

-            if (extentX > largestExtent)
+            if ( extentX > largestExtent )

                 largestExtent = extentX;
         }
                 largestExtent = extentX;
         }

-        if (oldFont)
-            ::SelectObject(dc, oldFont);
+    }
+    else // just increase the extent to the length of this string
+    {
+        int existingExtent = (int)SendMessage(GetHwnd(),
+                                              LB_GETHORIZONTALEXTENT, 0, 0L);

 
 

-        ReleaseDC(GetHwnd(), dc);
-        SendMessage(GetHwnd(), LB_SETHORIZONTALEXTENT, LOWORD(largestExtent), 0L);
+        ::GetTextExtentPoint32(dc, s.c_str(), s.length(), &extentXY);
+
+        int extentX = (int)(extentXY.cx + lpTextMetric.tmAveCharWidth);
+        if ( extentX > existingExtent )
+            largestExtent = extentX;

     }
     }

+
+    if ( largestExtent )
+        SendMessage(GetHwnd(), LB_SETHORIZONTALEXTENT, LOWORD(largestExtent), 0L);
+    //else: it shouldn't change

 }
 
 wxSize wxListBox::DoGetBestSize() const
 }
 
 wxSize wxListBox::DoGetBestSize() const


@@ -629,7 +608,7 @@ wxSize wxListBox::DoGetBestSize() const
     // find the widest string
     int wLine;
     int wListbox = 0;
     // find the widest string
     int wLine;
     int wListbox = 0;

-    for ( int i = 0; i < m_noItems; i++ )
+    for (unsigned int i = 0; i < m_noItems; i++)

     {
         wxString str(GetString(i));
         GetTextExtent(str, &wLine, NULL);
     {
         wxString str(GetString(i));
         GetTextExtent(str, &wLine, NULL);


@@ -644,13 +623,21 @@ wxSize wxListBox::DoGetBestSize() const
 
     // the listbox should be slightly larger than the widest string
     int cx, cy;
 
     // the listbox should be slightly larger than the widest string
     int cx, cy;

-    wxGetCharSize(GetHWND(), &cx, &cy, &GetFont());
+    wxGetCharSize(GetHWND(), &cx, &cy, GetFont());

 
     wListbox += 3*cx;
 
 
     wListbox += 3*cx;
 

-    int hListbox = EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy)*(wxMax(m_noItems, 7));
+    // 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
+    int hListbox = EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy)*
+                    wxMin(wxMax(m_noItems, 3), 10);

 
 

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

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


@@ -659,68 +646,49 @@ wxSize wxListBox::DoGetBestSize() const
 
 bool wxListBox::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
 {
 
 bool wxListBox::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
 {

-    if ( param == LBN_SELCHANGE )
+    if ((param == LBN_SELCHANGE) && HasMultipleSelection())

     {
     {

-        wxCommandEvent event(wxEVT_COMMAND_LISTBOX_SELECTED, m_windowId);
-        event.SetEventObject( this );
-
-        wxArrayInt aSelections;
-        int n, count = GetSelections(aSelections);
-        if ( count > 0 )
-        {
-            n = aSelections[0];
-            if ( HasClientObjectData() )
-                event.SetClientObject( GetClientObject(n) );
-            else if ( HasClientUntypedData() )
-                event.SetClientData( GetClientData(n) );
-            event.SetString( GetString(n) );
-        }
-        else
-        {
-            n = -1;
-        }
-
-        event.m_commandInt = n;
+        CalcAndSendEvent();
+        return true;
+    }

 
 

-        return GetEventHandler()->ProcessEvent(event);
+    wxEventType evtType;
+    if ( param == LBN_SELCHANGE )
+    {
+        evtType = wxEVT_COMMAND_LISTBOX_SELECTED;

     }
     else if ( param == LBN_DBLCLK )
     {
     }
     else if ( param == LBN_DBLCLK )
     {

-        wxCommandEvent event(wxEVT_COMMAND_LISTBOX_DOUBLECLICKED, m_windowId);
-        event.SetEventObject( this );
-
-        return GetEventHandler()->ProcessEvent(event);
+        evtType = wxEVT_COMMAND_LISTBOX_DOUBLECLICKED;
+    }
+    else
+    {
+        // some event we're not interested in
+        return false;

     }
     }

-    //else:

 
 

-    return FALSE;
-}
+    wxCommandEvent event(evtType, m_windowId);
+    event.SetEventObject( this );

 
 

-WXHBRUSH wxListBox::OnCtlColor(WXHDC pDC, WXHWND pWnd, WXUINT nCtlColor,
-                               WXUINT message, WXWPARAM wParam, WXLPARAM lParam)
-{
-#if wxUSE_CTL3D
-    if ( m_useCtl3D )
+    // retrieve the affected item
+    int n = SendMessage(GetHwnd(), LB_GETCARETINDEX, 0, 0);
+    if ( n != LB_ERR )

     {
     {

-        HBRUSH hbrush = Ctl3dCtlColorEx(message, wParam, lParam);
-        return (WXHBRUSH) hbrush;
-    }
-#endif
+        if ( HasClientObjectData() )
+            event.SetClientObject( GetClientObject(n) );
+        else if ( HasClientUntypedData() )
+            event.SetClientData( GetClientData(n) );

 
 

-    if (GetParent()->GetTransparentBackground())
-        SetBkMode((HDC) pDC, TRANSPARENT);
+        event.SetString(GetString(n));
+    }

     else
     else

-        SetBkMode((HDC) pDC, OPAQUE);
-
-    ::SetBkColor((HDC) pDC, RGB(GetBackgroundColour().Red(), GetBackgroundColour().Green(), GetBackgroundColour().Blue()));
-    ::SetTextColor((HDC) pDC, RGB(GetForegroundColour().Red(), GetForegroundColour().Green(), GetForegroundColour().Blue()));
+    {
+        return false;
+    }

 
 

-    wxBrush *backgroundBrush = wxTheBrushList->FindOrCreateBrush(GetBackgroundColour(), wxSOLID);
+    event.SetInt(n);

 
 

-    // Note that this will be cleaned up in wxApp::OnIdle, if backgroundBrush
-    // has a zero usage count.
-    backgroundBrush->RealizeResource();
-    return (WXHBRUSH) backgroundBrush->GetResourceHandle();
+    return HandleWindowEvent(event);

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


@@ -744,49 +712,62 @@ WXHBRUSH wxListBox::OnCtlColor(WXHDC pDC, WXHWND pWnd, WXUINT nCtlColor,
 bool wxListBox::MSWOnMeasure(WXMEASUREITEMSTRUCT *item)
 {
     // only owner-drawn control should receive this message
 bool wxListBox::MSWOnMeasure(WXMEASUREITEMSTRUCT *item)
 {
     // only owner-drawn control should receive this message

-    wxCHECK( ((m_windowStyle & wxLB_OWNERDRAW) == wxLB_OWNERDRAW), FALSE );
+    wxCHECK( ((m_windowStyle & wxLB_OWNERDRAW) == wxLB_OWNERDRAW), false );

 
     MEASUREITEMSTRUCT *pStruct = (MEASUREITEMSTRUCT *)item;
 
 
     MEASUREITEMSTRUCT *pStruct = (MEASUREITEMSTRUCT *)item;
 

+#ifdef __WXWINCE__
+    HDC hdc = GetDC(NULL);
+#else

     HDC hdc = CreateIC(wxT("DISPLAY"), NULL, NULL, 0);
     HDC hdc = CreateIC(wxT("DISPLAY"), NULL, NULL, 0);

+#endif

 
 

-    wxDC dc;
-    dc.SetHDC((WXHDC)hdc);
-    dc.SetFont(wxSystemSettings::GetSystemFont(wxSYS_ANSI_VAR_FONT));
-
-    pStruct->itemHeight = dc.GetCharHeight() + 2*OWNER_DRAWN_LISTBOX_EXTRA_SPACE;
-    pStruct->itemWidth  = dc.GetCharWidth();
+    {
+        wxDCTemp dc((WXHDC)hdc);
+        dc.SetFont(GetFont());

 
 

-    dc.SetHDC(0);
+        pStruct->itemHeight = dc.GetCharHeight() + 2*OWNER_DRAWN_LISTBOX_EXTRA_SPACE;
+        pStruct->itemWidth  = dc.GetCharWidth();
+    }

 
 

+#ifdef __WXWINCE__
+    ReleaseDC(NULL, hdc);
+#else

     DeleteDC(hdc);
     DeleteDC(hdc);

+#endif

 
 

-    return TRUE;
+    return true;

 }
 
 // forward the message to the appropriate item
 bool wxListBox::MSWOnDraw(WXDRAWITEMSTRUCT *item)
 {
     // only owner-drawn control should receive this message
 }
 
 // forward the message to the appropriate item
 bool wxListBox::MSWOnDraw(WXDRAWITEMSTRUCT *item)
 {
     // only owner-drawn control should receive this message

-    wxCHECK( ((m_windowStyle & wxLB_OWNERDRAW) == wxLB_OWNERDRAW), FALSE );
+    wxCHECK( ((m_windowStyle & wxLB_OWNERDRAW) == wxLB_OWNERDRAW), false );

 
     DRAWITEMSTRUCT *pStruct = (DRAWITEMSTRUCT *)item;
 
     DRAWITEMSTRUCT *pStruct = (DRAWITEMSTRUCT *)item;

+    UINT itemID = pStruct->itemID;
+
+    // the item may be -1 for an empty listbox
+    if ( itemID == (UINT)-1 )
+        return false;

 
 

-    long data = ListBox_GetItemData(GetHwnd(), pStruct->itemID);
+    LRESULT data = ListBox_GetItemData(GetHwnd(), pStruct->itemID);

 
 

-    wxCHECK( data && (data != LB_ERR), FALSE );
+    wxCHECK( data && (data != LB_ERR), false );

 
     wxListBoxItem *pItem = (wxListBoxItem *)data;
 
 
     wxListBoxItem *pItem = (wxListBoxItem *)data;
 

-    wxDC dc;
-    dc.SetHDC((WXHDC)pStruct->hDC, FALSE);
-    wxRect rect(wxPoint(pStruct->rcItem.left, pStruct->rcItem.top),
-            wxPoint(pStruct->rcItem.right, pStruct->rcItem.bottom));
+    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, rect,

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

 }
 
 }
 

-#endif
-    // wxUSE_OWNER_DRAWN
+#endif // wxUSE_OWNER_DRAWN
+
+#endif // wxUSE_LISTBOX