X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/c085e333984dc079a001cd3f581aeb1f51a1f227..964688d8ec1cb1a7bfbb8fe906997679d3a005d4:/src/msw/listbox.cpp

diff --git a/src/msw/listbox.cpp b/src/msw/listbox.cpp
index 2dd43b3b64..02d55e900d 100644
--- a/src/msw/listbox.cpp
+++ b/src/msw/listbox.cpp
@@ -3,50 +3,87 @@
 // Purpose:     wxListBox
 // Author:      Julian Smart
 // Modified by: Vadim Zeitlin (owner drawn stuff)
-// Created:     
+// Created:
 // RCS-ID:      $Id$
 // Copyright:   (c) Julian Smart
 // Licence:     wxWindows license
 ///////////////////////////////////////////////////////////////////////////////
 
 #ifdef __GNUG__
-#pragma implementation "listbox.h"
+    #pragma implementation "listbox.h"
 #endif
 
 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 
 #ifdef __BORLANDC__
-#pragma hdrstop
+    #pragma hdrstop
 #endif
 
+#include "wx/window.h"
+#include "wx/msw/private.h"
+
 #ifndef WX_PRECOMP
 #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 "wx/msw/private.h"
-
-#include <windows.h>
 #include <windowsx.h>
 
-#ifdef __GNUWIN32__
-#include <wx/msw/gnuwin32/extra.h>
+#ifdef __WXWINE__
+  #if defined(GetWindowStyle)
+    #undef GetWindowStyle
+  #endif
 #endif
 
-#ifdef GetCharWidth
-#undef GetCharWidth
-#endif
+#include "wx/dynarray.h"
+#include "wx/log.h"
 
 #if wxUSE_OWNER_DRAWN
-  #include  "wx/ownerdrw.h"
+    #include  "wx/ownerdrw.h"
 #endif
 
-#include "wx/dynarray.h"
-#include "wx/log.h"
+#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
+#endif
 
 #if !USE_SHARED_LIBRARY
-  IMPLEMENT_DYNAMIC_CLASS(wxListBox, wxControl)
+    IMPLEMENT_DYNAMIC_CLASS(wxListBox, wxControl)
 #endif
 
 // ============================================================================
@@ -58,18 +95,18 @@
 class wxListBoxItem : public wxOwnerDrawn
 {
 public:
-  wxListBoxItem(const wxString& str = "");
+    wxListBoxItem(const wxString& str = "");
 };
 
-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)
 {
-  return new wxListBoxItem();
+    return new wxListBoxItem();
 }
 
 #endif  //USE_OWNER_DRAWN
@@ -78,70 +115,59 @@ wxOwnerDrawn *wxListBox::CreateItem(size_t n)
 // list box control implementation
 // ============================================================================
 
-// this macro is dangerous but still better than tons of (HWND)GetHWND()
-#define   hwnd    (HWND)GetHWND()
-
 bool wxListBox::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
 {
-/*
-  if (param == LBN_SELCANCEL)
-  {
-    event.extraLong = FALSE;
-  }
-*/
-  if (param == LBN_SELCHANGE)
-  {
-    wxCommandEvent event(wxEVT_COMMAND_LISTBOX_SELECTED, m_windowId);
-    wxArrayInt aSelections;
-    int count = GetSelections(aSelections);
-    if ( count > 0 )
+    /*
+       if (param == LBN_SELCANCEL)
+       {
+       event.extraLong = FALSE;
+       }
+     */
+    if (param == LBN_SELCHANGE)
     {
-      event.m_commandInt = aSelections[0] ;
-      event.m_clientData = GetClientData(event.m_commandInt);
-      wxString str(GetString(event.m_commandInt));
-      if (str != "")
-        event.m_commandString = copystring((char *)(const char *)str);
+        wxCommandEvent event(wxEVT_COMMAND_LISTBOX_SELECTED, m_windowId);
+        wxArrayInt aSelections;
+        int count = GetSelections(aSelections);
+        if ( count > 0 )
+        {
+            event.m_commandInt = aSelections[0] ;
+            event.m_clientData = GetClientData(event.m_commandInt);
+            wxString str(GetString(event.m_commandInt));
+            if (str != _T(""))
+            {
+		event.m_commandString = str;
+            }
+        }
+        else
+        {
+            event.m_commandInt = -1 ;
+            event.m_commandString.Empty();
+        }
+
+        event.SetEventObject( this );
+        ProcessCommand(event);
+        return TRUE;
     }
-    else
+    else if (param == LBN_DBLCLK)
     {
-      event.m_commandInt = -1 ;
-      event.m_commandString = copystring("") ;
+        wxCommandEvent event(wxEVT_COMMAND_LISTBOX_DOUBLECLICKED, m_windowId);
+        event.SetEventObject( this );
+        GetEventHandler()->ProcessEvent(event) ;
+        return TRUE;
     }
 
-    event.SetEventObject( this );
-    ProcessCommand(event);
-    if (event.m_commandString)
-      delete[] event.m_commandString ;
-    return TRUE;
-  }
-  else if (param == LBN_DBLCLK)
-  {
-    wxCommandEvent event(wxEVT_COMMAND_LISTBOX_DOUBLECLICKED, m_windowId);
-    event.SetEventObject( this );
-    GetEventHandler()->ProcessEvent(event) ;
-    return TRUE;
-/*
-    {
-#if WXWIN_COMPATIBILITY
-      wxWindow *parent = (wxWindow *)GetParent();
-      if (parent)
-        parent->GetEventHandler()->OnDefaultAction(this);
-#endif
-      return TRUE;
-    }
- */
-  }
-  return FALSE;
+    return FALSE;
 }
 
-// Listbox item
-wxListBox::wxListBox(void)
+    // Listbox item
+wxListBox::wxListBox()
 {
-  m_noItems = 0;
-  m_selected = 0;
+    m_noItems = 0;
+    m_selected = 0;
 }
 
-bool wxListBox::Create(wxWindow *parent, wxWindowID id,
+bool wxListBox::Create(wxWindow *parent,
+                       wxWindowID id,
                        const wxPoint& pos,
                        const wxSize& size,
                        int n, const wxString choices[],
@@ -149,515 +175,511 @@ bool wxListBox::Create(wxWindow *parent, wxWindowID id,
                        const wxValidator& validator,
                        const wxString& name)
 {
-  m_noItems = n;
-  m_hWnd = 0;
-  m_selected = 0;
+    m_noItems = 0;
+    m_hWnd = 0;
+    m_selected = 0;
 
-  SetName(name);
-  SetValidator(validator);
+    SetName(name);
+    SetValidator(validator);
 
-  if (parent) parent->AddChild(this);
+    if (parent)
+        parent->AddChild(this);
 
-  wxSystemSettings settings;
-  SetBackgroundColour(settings.GetSystemColour(wxSYS_COLOUR_WINDOW));
-  SetForegroundColour(parent->GetForegroundColour());
+    wxSystemSettings settings;
+    SetBackgroundColour(settings.GetSystemColour(wxSYS_COLOUR_WINDOW));
+    SetForegroundColour(parent->GetForegroundColour());
 
-  m_windowId = ( id == -1 ) ? (int)NewControlId() : id;
+    m_windowId = ( id == -1 ) ? (int)NewControlId() : id;
 
-  int x = pos.x;
-  int y = pos.y;
-  int width = size.x;
-  int height = size.y;
-  m_windowStyle = style;
+    int x = pos.x;
+    int y = pos.y;
+    int width = size.x;
+    int height = size.y;
+    m_windowStyle = style;
 
-  DWORD wstyle = 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;
+    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 (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;
+        // we don't support LBS_OWNERDRAWVARIABLE yet
+        wstyle |= LBS_OWNERDRAWFIXED;
     }
 #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) )
-  {
-    wstyle |= WS_BORDER;
-  }
-
-  m_hWnd = (WXHWND)::CreateWindowEx(exStyle, "LISTBOX", NULL,
-                                wstyle | WS_CHILD,
-                                0, 0, 0, 0, 
-                                (HWND)parent->GetHWND(), (HMENU)m_windowId,
-                                wxGetInstance(), NULL);
-
-  wxCHECK_MSG( m_hWnd, FALSE, "Failed to create listbox" );
-
-#if CTL3D
-  if (want3D)
-  {
-    Ctl3dSubclassCtl(hwnd);
-    m_useCtl3D = TRUE;
-  }
-#endif
 
-  // Subclass again to catch messages
-  SubclassWin(m_hWnd);
+    // Without this style, you get unexpected heights, so e.g. constraint layout
+    // doesn't work properly
+    wstyle |= LBS_NOINTEGRALHEIGHT;
 
-  size_t ui;
-  for (ui = 0; ui < (size_t)n; ui++) {
-    Append(choices[ui]);
-  }
+    bool want3D;
+    WXDWORD exStyle = Determine3DEffects(WS_EX_CLIENTEDGE, &want3D) ;
 
-#if wxUSE_OWNER_DRAWN
-    if ( m_windowStyle & wxLB_OWNERDRAW ) {
-      for (ui = 0; ui < (size_t)n; ui++) {
-        // create new item which will process WM_{DRAW|MEASURE}ITEM messages
-        wxOwnerDrawn *pNewItem = CreateItem(ui);
-        pNewItem->SetName(choices[ui]);
-        m_aItems.Add(pNewItem);
-        ListBox_SetItemData(hwnd, ui, pNewItem);
-      }
+    // Even with extended styles, need to combine with WS_BORDER
+    // for them to look right.
+    if ( want3D || wxStyleHasBorder(m_windowStyle) )
+    {
+        wstyle |= WS_BORDER;
+    }
+
+    m_hWnd = (WXHWND)::CreateWindowEx(exStyle, _T("LISTBOX"), NULL,
+            wstyle | WS_CHILD,
+            0, 0, 0, 0,
+            (HWND)parent->GetHWND(), (HMENU)m_windowId,
+            wxGetInstance(), NULL);
+
+    wxCHECK_MSG( m_hWnd, FALSE, _T("Failed to create listbox") );
+
+#if wxUSE_CTL3D
+    if (want3D)
+    {
+        Ctl3dSubclassCtl(GetHwnd());
+        m_useCtl3D = TRUE;
     }
 #endif
 
-  if ( (m_windowStyle & wxLB_MULTIPLE) == 0 )
-    SendMessage(hwnd, LB_SETCURSEL, 0, 0);
+    // Subclass again to catch messages
+    SubclassWin(m_hWnd);
+
+    size_t ui;
+    for (ui = 0; ui < (size_t)n; ui++) {
+        Append(choices[ui]);
+    }
+
+    if ( (m_windowStyle & wxLB_MULTIPLE) == 0 )
+        SendMessage(GetHwnd(), LB_SETCURSEL, 0, 0);
 
-  SetFont(* parent->GetFont());
+    SetFont(parent->GetFont());
 
-  SetSize(x, y, width, height);
+    SetSize(x, y, width, height);
 
-  Show(TRUE);
+    Show(TRUE);
 
-  return TRUE;
+    return TRUE;
 }
 
-wxListBox::~wxListBox(void)
+wxListBox::~wxListBox()
 {
 #if wxUSE_OWNER_DRAWN
     size_t uiCount = m_aItems.Count();
     while ( uiCount-- != 0 ) {
-      delete m_aItems[uiCount];
+        delete m_aItems[uiCount];
     }
-#endif
+#endif // wxUSE_OWNER_DRAWN
 }
 
-void wxListBox::SetupColours(void)
+void wxListBox::SetupColours()
 {
-  SetBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_WINDOW));
-  SetForegroundColour(GetParent()->GetForegroundColour());
+    SetBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_WINDOW));
+    SetForegroundColour(GetParent()->GetForegroundColour());
 }
 
 void wxListBox::SetFirstItem(int N)
 {
-  SendMessage(hwnd,LB_SETTOPINDEX,(WPARAM)N,(LPARAM)0) ;
+    wxCHECK_RET( N >= 0 && N < m_noItems,
+                 _T("invalid index in wxListBox::SetFirstItem") );
+
+    SendMessage(GetHwnd(),LB_SETTOPINDEX,(WPARAM)N,(LPARAM)0) ;
 }
 
 void wxListBox::SetFirstItem(const wxString& s)
 {
-  int N = FindString(s) ;
+    int N = FindString(s) ;
 
-  if (N>=0)
-    SetFirstItem(N) ;
+    if ( N >= 0 )
+        SetFirstItem(N) ;
 }
 
 void wxListBox::Delete(int N)
 {
-  SendMessage(hwnd, LB_DELETESTRING, N, 0);
-  m_noItems --;
-  SetHorizontalExtent("");
+    wxCHECK_RET( N >= 0 && N < m_noItems,
+                 _T("invalid index in wxListBox::Delete") );
+
+    SendMessage(GetHwnd(), LB_DELETESTRING, N, 0);
+    m_noItems--;
+
+    SetHorizontalExtent("");
 }
 
 void wxListBox::Append(const wxString& item)
 {
-  int index = ListBox_AddString(hwnd, item);
-  m_noItems ++;
+    int index = ListBox_AddString(GetHwnd(), item);
+    m_noItems ++;
 
 #if wxUSE_OWNER_DRAWN
     if ( m_windowStyle & wxLB_OWNERDRAW ) {
-      wxOwnerDrawn *pNewItem = CreateItem(-1); // dummy argument
-      pNewItem->SetName(item);
-      m_aItems.Add(pNewItem);
-      ListBox_SetItemData(hwnd, index, pNewItem);
+        wxOwnerDrawn *pNewItem = CreateItem(index); // dummy argument
+        pNewItem->SetName(item);
+        m_aItems.Add(pNewItem);
+        ListBox_SetItemData(GetHwnd(), index, pNewItem);
     }
 #endif
 
-  SetHorizontalExtent(item);
+    SetHorizontalExtent(item);
 }
 
-void wxListBox::Append(const wxString& item, char *Client_data)
+void wxListBox::Append(const wxString& item, void *Client_data)
 {
-  int index = ListBox_AddString(hwnd, item);
-  m_noItems ++;
+    int index = ListBox_AddString(GetHwnd(), item);
+    m_noItems ++;
 
 #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("Can't use client data with owner-drawn listboxes");
+        // client data must be pointer to wxOwnerDrawn, otherwise we would crash
+        // in OnMeasure/OnDraw.
+        wxFAIL_MSG(_T("Can't use client data with owner-drawn listboxes"));
     }
     else
 #endif
-      ListBox_SetItemData(hwnd, index, Client_data);
 
-  SetHorizontalExtent(item);
+    ListBox_SetItemData(GetHwnd(), index, Client_data);
+
+    SetHorizontalExtent(item);
 }
 
-void wxListBox::Set(int n, const wxString *choices, char** clientData)
+void wxListBox::Set(int n, const wxString *choices, void** clientData)
 {
-  ShowWindow(hwnd, SW_HIDE);
-  ListBox_ResetContent(hwnd);
-  int i;
-  for (i = 0; i < n; i++)
-  {
-    ListBox_AddString(hwnd, choices[i]);
-    if ( clientData )
-      ListBox_SetItemData(hwnd, i, clientData[i]);
-  }
-  m_noItems = n;
+    ShowWindow(GetHwnd(), SW_HIDE);
+    ListBox_ResetContent(GetHwnd());
+    int i;
+    for (i = 0; i < n; i++)
+    {
+        ListBox_AddString(GetHwnd(), choices[i]);
+        if ( clientData )
+            ListBox_SetItemData(GetHwnd(), i, clientData[i]);
+    }
+    m_noItems = n;
 
 #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)n; ui++) {
-        wxOwnerDrawn *pNewItem = CreateItem(ui);
-        pNewItem->SetName(choices[ui]);
-        m_aItems.Add(pNewItem);
-        ListBox_SetItemData(hwnd, ui, pNewItem);
-
-        wxASSERT_MSG(clientData[ui] == NULL,
-                     "Can't use client data with owner-drawn listboxes");
-      }
+        // 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)n; ui++) {
+            wxOwnerDrawn *pNewItem = CreateItem(ui);
+            pNewItem->SetName(choices[ui]);
+            m_aItems.Add(pNewItem);
+            ListBox_SetItemData(GetHwnd(), ui, pNewItem);
+
+            wxASSERT_MSG(clientData[ui] == NULL,
+                    _T("Can't use client data with owner-drawn listboxes"));
+        }
     }
 #endif
 
-  SetHorizontalExtent("");
-  ShowWindow(hwnd, SW_SHOW);
+    SetHorizontalExtent("");
+    ShowWindow(GetHwnd(), SW_SHOW);
 }
 
 int wxListBox::FindString(const wxString& s) const
 {
- int pos = ListBox_FindStringExact(hwnd, (WPARAM)-1, s);
- if (pos == LB_ERR)
-   return -1;
- else
-   return pos;
+    int pos = ListBox_FindStringExact(GetHwnd(), (WPARAM)-1, s);
+    if (pos == LB_ERR)
+        return -1;
+    else
+        return pos;
 }
 
-void wxListBox::Clear(void)
+void wxListBox::Clear()
 {
-  ListBox_ResetContent(hwnd);
+    ListBox_ResetContent(GetHwnd());
+
+#if wxUSE_OWNER_DRAWN
+    size_t uiCount = m_aItems.Count();
+    while ( uiCount-- != 0 ) {
+        delete m_aItems[uiCount];
+    }
 
-  m_noItems = 0;
-  ListBox_GetHorizontalExtent(hwnd);
+    m_aItems.Clear();
+#endif // wxUSE_OWNER_DRAWN
+
+    m_noItems = 0;
+    ListBox_GetHorizontalExtent(GetHwnd());
 }
 
 void wxListBox::SetSelection(int N, bool select)
 {
-  if ((m_windowStyle & wxLB_MULTIPLE) || (m_windowStyle & wxLB_EXTENDED))
-    SendMessage(hwnd, LB_SETSEL, select, N);
-  else
-  {
-    int N1 = N;
-    if (!select)
-        N1 = -1;
-    SendMessage(hwnd, LB_SETCURSEL, N1, 0);
-  }
+    wxCHECK_RET( N >= 0 && N < m_noItems,
+                 _T("invalid index in wxListBox::SetSelection") );
+
+    if ((m_windowStyle & wxLB_MULTIPLE) || (m_windowStyle & wxLB_EXTENDED))
+        SendMessage(GetHwnd(), LB_SETSEL, select, N);
+    else
+    {
+        int N1 = N;
+        if (!select)
+            N1 = -1;
+        SendMessage(GetHwnd(), LB_SETCURSEL, N1, 0);
+    }
 }
 
 bool wxListBox::Selected(int N) const
 {
-  return SendMessage(hwnd, LB_GETSEL, N, 0) == 0 ? FALSE : TRUE;
+    wxCHECK_MSG( N >= 0 && N < m_noItems, FALSE,
+                 _T("invalid index in wxListBox::Selected") );
+
+    return SendMessage(GetHwnd(), LB_GETSEL, N, 0) == 0 ? FALSE : TRUE;
 }
 
 void wxListBox::Deselect(int N)
 {
-  if ((m_windowStyle & wxLB_MULTIPLE) || (m_windowStyle & wxLB_EXTENDED))
-    SendMessage(hwnd, LB_SETSEL, FALSE, N);
+    wxCHECK_RET( N >= 0 && N < m_noItems,
+                 _T("invalid index in wxListBox::Deselect") );
+
+    if ((m_windowStyle & wxLB_MULTIPLE) || (m_windowStyle & wxLB_EXTENDED))
+        SendMessage(GetHwnd(), LB_SETSEL, FALSE, N);
 }
 
-char *wxListBox::GetClientData(int N) const
+void *wxListBox::GetClientData(int N) const
 {
-  return (char *)SendMessage(hwnd, LB_GETITEMDATA, N, 0);
+    wxCHECK_MSG( N >= 0 && N < m_noItems, NULL,
+                 _T("invalid index in wxListBox::GetClientData") );
+
+    return (void *)SendMessage(GetHwnd(), LB_GETITEMDATA, N, 0);
 }
 
-void wxListBox::SetClientData(int N, char *Client_data)
+void wxListBox::SetClientData(int N, void *Client_data)
 {
-  if ( ListBox_SetItemData(hwnd, N, Client_data) == LB_ERR )
-    wxLogDebug("LB_SETITEMDATA failed");
+    wxCHECK_RET( N >= 0 && N < m_noItems,
+                 _T("invalid index in wxListBox::SetClientData") );
+
+    if ( ListBox_SetItemData(GetHwnd(), N, Client_data) == LB_ERR )
+        wxLogDebug(_T("LB_SETITEMDATA failed"));
 }
 
 // Return number of selections and an array of selected integers
 int wxListBox::GetSelections(wxArrayInt& aSelections) const
 {
-  aSelections.Empty();
+    aSelections.Empty();
+
+    if ((m_windowStyle & wxLB_MULTIPLE) || (m_windowStyle & wxLB_EXTENDED))
+    {
+        int no_sel = ListBox_GetSelCount(GetHwnd());
+        if (no_sel != 0) {
+            int *selections = new int[no_sel];
+            if ( ListBox_GetSelItems(GetHwnd(), no_sel, selections) == LB_ERR ) {
+                wxFAIL_MSG(_T("This listbox can't have single-selection style!"));
+            }
 
-  if ((m_windowStyle & wxLB_MULTIPLE) || (m_windowStyle & wxLB_EXTENDED))
-  {
-    int no_sel = ListBox_GetSelCount(hwnd);
-    if (no_sel != 0) {
-      int *selections = new int[no_sel];
-      if ( ListBox_GetSelItems(hwnd, no_sel, selections) == LB_ERR ) {
-        wxFAIL_MSG("This listbox can't have single-selection style!");
-      }
+            aSelections.Alloc(no_sel);
+            for ( int n = 0; n < no_sel; n++ )
+                aSelections.Add(selections[n]);
 
-      aSelections.Alloc(no_sel);
-      for ( int n = 0; n < no_sel; n++ )
-        aSelections.Add(selections[n]);
+            delete [] selections;
+        }
 
-      delete [] selections;
+        return no_sel;
     }
+    else  // single-selection listbox
+    {
+        aSelections.Add(ListBox_GetCurSel(GetHwnd()));
 
-    return no_sel;
-  }
-  else  // single-selection listbox
-  {
-    aSelections.Add(ListBox_GetCurSel(hwnd));
-
-    return 1;
-  }
+        return 1;
+    }
 }
 
 // Get single selection, for single choice list items
 int wxListBox::GetSelection() const
 {
-  wxCHECK_MSG( !(m_windowStyle & wxLB_MULTIPLE) && 
-               !(m_windowStyle & wxLB_EXTENDED), 
-               -1,
-               "GetSelection() can't be used with multiple-selection "
-               "listboxes, use GetSelections() instead." );
+    wxCHECK_MSG( !(m_windowStyle & wxLB_MULTIPLE) &&
+                 !(m_windowStyle & wxLB_EXTENDED),
+                 -1,
+                 _T("GetSelection() can't be used with multiple-selection "
+                    "listboxes, use GetSelections() instead.") );
 
-  return ListBox_GetCurSel(hwnd);
+    return ListBox_GetCurSel(GetHwnd());
 }
 
 // Find string for position
 wxString wxListBox::GetString(int N) const
 {
-  if (N < 0 || N > m_noItems)
-    return wxString("");
-    
-  int len = (int)SendMessage(hwnd, LB_GETTEXT, N, (LONG)wxBuffer);
-  wxBuffer[len] = 0;
-  return wxString(wxBuffer);
-}
-
-void wxListBox::SetSize(int x, int y, int width, int height, int sizeFlags)
-{
-  int currentX, currentY;
-  GetPosition(&currentX, &currentY);
-
-  int x1 = x;
-  int y1 = y;
-  int w1 = width;
-  int h1 = height;
-
-  if (x == -1 || (sizeFlags & wxSIZE_ALLOW_MINUS_ONE))
-    x1 = currentX;
-  if (y == -1 || (sizeFlags & wxSIZE_ALLOW_MINUS_ONE))
-    y1 = currentY;
-
-  AdjustForParentClientOrigin(x1, y1, sizeFlags);
-
-  // If we're prepared to use the existing size, then...
-  if (width == -1 && height == -1 && ((sizeFlags & wxSIZE_AUTO) != wxSIZE_AUTO))
-  {
-    GetSize(&w1, &h1);
-  }
-
-  int cx; // button font dimensions
-  int cy;
+    wxCHECK_MSG( N >= 0 && N < m_noItems, "",
+                 _T("invalid index in wxListBox::GetClientData") );
 
-  wxGetCharSize(GetHWND(), &cx, &cy,GetFont());
+    int len = ListBox_GetTextLen(GetHwnd(), N);
 
-  float control_width, control_height, control_x, control_y;
-
-  // Deal with default size (using -1 values)
-  if (w1<=0)
-    w1 = DEFAULT_ITEM_WIDTH;
-
-  if (h1<=0)
-    h1 = DEFAULT_ITEM_HEIGHT;
-
-  control_x = (float)x1;
-  control_y = (float)y1;
-  control_width = (float)w1;
-  control_height = (float)h1;
-
-  // Calculations may have made size too small
-  if (control_height <= 0)
-    control_height = (float)DEFAULT_ITEM_HEIGHT;
-
-  if (control_width <= 0)
-    control_width = (float)DEFAULT_ITEM_WIDTH;
-
-//  wxDebugMsg("About to set the listbox height to %d", (int)control_height);
-  MoveWindow(hwnd, (int)control_x, (int)control_y,
-                   (int)control_width, (int)control_height, TRUE);
+    // +1 for terminating NUL
+    wxString result;
+    ListBox_GetText(GetHwnd(), N, result.GetWriteBuf(len + 1));
+    result.UngetWriteBuf();
 
+    return result;
 }
 
-// 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.
+// 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)
 {
-  // Only necessary if we want a horizontal scrollbar
-  if (!(m_windowStyle & wxHSCROLL))
-    return;
-  TEXTMETRIC lpTextMetric;
-
-  if (s != "")
-  {
-    int existingExtent = (int)SendMessage(hwnd, LB_GETHORIZONTALEXTENT, 0, 0L);
-    HDC dc = GetWindowDC(hwnd);
-    HFONT oldFont = 0;
-    if (GetFont() && GetFont()->GetResourceHandle())
-      oldFont = (HFONT) ::SelectObject(dc, (HFONT) GetFont()->GetResourceHandle());
-
-    GetTextMetrics(dc, &lpTextMetric);
-    SIZE extentXY;
-    ::GetTextExtentPoint(dc, (LPSTR) (const char *)s, s.Length(), &extentXY);
-    int extentX = (int)(extentXY.cx + lpTextMetric.tmAveCharWidth);
-    
-    if (oldFont)
-      ::SelectObject(dc, oldFont);
-
-    ReleaseDC(hwnd, dc);
-    if (extentX > existingExtent)
-      SendMessage(hwnd, LB_SETHORIZONTALEXTENT, LOWORD(extentX), 0L);
-    return;
-  }
-  else
-  {
-    int largestExtent = 0;
-    HDC dc = GetWindowDC(hwnd);
-    HFONT oldFont = 0;
-    if (GetFont() && GetFont()->GetResourceHandle())
-      oldFont = (HFONT) ::SelectObject(dc, (HFONT) GetFont()->GetResourceHandle());
-
-    GetTextMetrics(dc, &lpTextMetric);
-    int i;
-    for (i = 0; i < m_noItems; i++)
+    // Only necessary if we want a horizontal scrollbar
+    if (!(m_windowStyle & wxHSCROLL))
+        return;
+    TEXTMETRIC lpTextMetric;
+
+    if (s != _T(""))
     {
-      int len = (int)SendMessage(hwnd, LB_GETTEXT, i, (LONG)wxBuffer);
-      wxBuffer[len] = 0;
-      SIZE extentXY;
-      ::GetTextExtentPoint(dc, (LPSTR)wxBuffer, len, &extentXY);
-      int extentX = (int)(extentXY.cx + lpTextMetric.tmAveCharWidth);
-      if (extentX > largestExtent)
-        largestExtent = extentX;
+        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);
+
+        ReleaseDC(GetHwnd(), dc);
+        if (extentX > existingExtent)
+            SendMessage(GetHwnd(), LB_SETHORIZONTALEXTENT, LOWORD(extentX), 0L);
+        return;
+    }
+    else
+    {
+        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++)
+        {
+            int len = (int)SendMessage(GetHwnd(), LB_GETTEXT, i, (LONG)wxBuffer);
+            wxBuffer[len] = 0;
+            SIZE extentXY;
+            ::GetTextExtentPoint(dc, (LPTSTR)wxBuffer, len, &extentXY);
+            int extentX = (int)(extentXY.cx + lpTextMetric.tmAveCharWidth);
+            if (extentX > largestExtent)
+                largestExtent = extentX;
+        }
+        if (oldFont)
+            ::SelectObject(dc, oldFont);
+
+        ReleaseDC(GetHwnd(), dc);
+        SendMessage(GetHwnd(), LB_SETHORIZONTALEXTENT, LOWORD(largestExtent), 0L);
     }
-    if (oldFont)
-      ::SelectObject(dc, oldFont);
-
-    ReleaseDC(hwnd, dc);
-    SendMessage(hwnd, LB_SETHORIZONTALEXTENT, LOWORD(largestExtent), 0L);
-  }
 }
 
 void
 wxListBox::InsertItems(int nItems, const wxString items[], int pos)
 {
-  int i;
-  for (i = 0; i < nItems; i++)
-    ListBox_InsertString(hwnd, i + pos, items[i]);
-  m_noItems += nItems;
+    wxCHECK_RET( pos >= 0 && pos <= m_noItems,
+                 _T("invalid index in wxListBox::InsertItems") );
 
-  #if wxUSE_OWNER_DRAWN
-    if ( m_windowStyle & wxLB_OWNERDRAW ) {
-      for ( i = 0; i < nItems; i++ ) {
-        wxOwnerDrawn *pNewItem = CreateItem((size_t)(pos + i));
-        pNewItem->SetName(items[i]);
-        m_aItems.Insert(pNewItem, (size_t)(pos + i));
-        ListBox_SetItemData(hwnd, i, pNewItem);
-      }
-    }
-  #endif
+    int i;
+    for (i = 0; i < nItems; i++)
+        ListBox_InsertString(GetHwnd(), i + pos, items[i]);
+    m_noItems += nItems;
 
-  SetHorizontalExtent("");
+    SetHorizontalExtent(_T(""));
 }
 
 void wxListBox::SetString(int N, const wxString& s)
 {
-  int sel = -1;
-  if (!(m_windowStyle & wxLB_MULTIPLE) && !(m_windowStyle & wxLB_EXTENDED))
-    sel = GetSelection();
-  
-  char *oldData = (char *)wxListBox::GetClientData(N);
-  
-  SendMessage(hwnd, LB_DELETESTRING, N, 0);
-
-  int newN = N;
-  if (N == (m_noItems - 1))
-    newN = -1;
-    
-  SendMessage(hwnd, LB_INSERTSTRING, newN, (LPARAM) (const char *)s);
-  if (oldData)
-    wxListBox::SetClientData(N, oldData);
-
-  // Selection may have changed
-  if (sel >= 0)
-    SetSelection(sel);
+    wxCHECK_RET( N >= 0 && N < m_noItems,
+                 _T("invalid index in wxListBox::SetString") );
+
+    int sel = -1;
+    if (!(m_windowStyle & wxLB_MULTIPLE) && !(m_windowStyle & wxLB_EXTENDED))
+        sel = GetSelection();
+
+    void *oldData = wxListBox::GetClientData(N);
+
+    SendMessage(GetHwnd(), LB_DELETESTRING, N, 0);
+
+    int newN = N;
+    if (N == (m_noItems - 1))
+        newN = -1;
+
+    SendMessage(GetHwnd(), LB_INSERTSTRING, newN, (LPARAM) (const wxChar *)s);
+    if (oldData)
+        wxListBox::SetClientData(N, oldData);
+
+    // Selection may have changed
+    if (sel >= 0)
+        SetSelection(sel);
 
 #if       wxUSE_OWNER_DRAWN
-  if ( m_windowStyle & wxLB_OWNERDRAW )
-	  // update item's text
-	  m_aItems[N]->SetName(s);
+    if ( m_windowStyle & wxLB_OWNERDRAW )
+        // update item's text
+        m_aItems[N]->SetName(s);
 #endif  //USE_OWNER_DRAWN
 }
 
-int wxListBox::Number (void) const
+int wxListBox::Number () const
 {
-  return m_noItems;
+    return m_noItems;
 }
 
 // For single selection items only
-wxString wxListBox::GetStringSelection (void) const
+wxString wxListBox::GetStringSelection () const
 {
-  int sel = GetSelection ();
-  if (sel > -1)
-    return this->GetString (sel);
-  else
-    return wxString("");
+    int sel = GetSelection ();
+    if (sel > -1)
+        return this->GetString (sel);
+    else
+        return wxString("");
 }
 
 bool wxListBox::SetStringSelection (const wxString& s, bool flag)
 {
-  int sel = FindString (s);
-  if (sel > -1)
+    int sel = FindString (s);
+    if (sel > -1)
     {
-      SetSelection (sel, flag);
-      return TRUE;
+        SetSelection (sel, flag);
+        return TRUE;
     }
-  else
-    return FALSE;
+    else
+        return FALSE;
+}
+
+wxSize wxListBox::DoGetBestSize()
+{
+    // find the widest string
+    int wLine;
+    int wListbox = 0;
+    for ( int i = 0; i < m_noItems; i++ )
+    {
+        wxString str(GetString(i));
+        GetTextExtent(str, &wLine, NULL);
+        if ( wLine > wListbox )
+            wListbox = wLine;
+    }
+
+    // give it some reasonable default value if there are no strings in the
+    // list
+    if ( wListbox == 0 )
+        wListbox = 100;
+
+    // the listbox should be slightly larger than the widest string
+    int cx, cy;
+    wxGetCharSize(GetHWND(), &cx, &cy, &GetFont());
+
+    wListbox += 3*cx;
+
+    int hListbox = EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy)*(wxMax(m_noItems, 7));
+
+    return wxSize(wListbox, hListbox);
 }
 
 // Is this the right thing? Won't setselection generate a command
@@ -668,98 +690,46 @@ bool wxListBox::SetStringSelection (const wxString& s, bool flag)
 // by the actual window system, or a separate function, ProcessCommand)
 void wxListBox::Command (wxCommandEvent & event)
 {
-  if (event.m_extraLong)
-    SetSelection (event.m_commandInt);
-  else
+    if (event.m_extraLong)
+        SetSelection (event.m_commandInt);
+    else
     {
-      Deselect (event.m_commandInt);
-      return;
+        Deselect (event.m_commandInt);
+        return;
     }
-  ProcessCommand (event);
+    ProcessCommand (event);
 }
 
 WXHBRUSH wxListBox::OnCtlColor(WXHDC pDC, WXHWND pWnd, WXUINT nCtlColor,
-			WXUINT message, WXWPARAM wParam, WXLPARAM lParam)
-{
-#if CTL3D
-  if ( m_useCtl3D )
-  {
-    HBRUSH hbrush = Ctl3dCtlColorEx(message, wParam, lParam);
-    return (WXHBRUSH) hbrush;
-  }
+        WXUINT message, WXWPARAM wParam, WXLPARAM lParam)
+{
+#if wxUSE_CTL3D
+    if ( m_useCtl3D )
+    {
+        HBRUSH hbrush = Ctl3dCtlColorEx(message, wParam, lParam);
+        return (WXHBRUSH) hbrush;
+    }
 #endif
 
-  if (GetParent()->GetTransparentBackground())
-    SetBkMode((HDC) pDC, TRANSPARENT);
-  else
-    SetBkMode((HDC) pDC, OPAQUE);
+    if (GetParent()->GetTransparentBackground())
+        SetBkMode((HDC) pDC, TRANSPARENT);
+    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()));
+    ::SetBkColor((HDC) pDC, RGB(GetBackgroundColour().Red(), GetBackgroundColour().Green(), GetBackgroundColour().Blue()));
+    ::SetTextColor((HDC) pDC, RGB(GetForegroundColour().Red(), GetForegroundColour().Green(), GetForegroundColour().Blue()));
 
-  wxBrush *backgroundBrush = wxTheBrushList->FindOrCreateBrush(GetBackgroundColour(), wxSOLID);
+    wxBrush *backgroundBrush = wxTheBrushList->FindOrCreateBrush(GetBackgroundColour(), wxSOLID);
 
-  // Note that this will be cleaned up in wxApp::OnIdle, if backgroundBrush
-  // has a zero usage count.
-  backgroundBrush->RealizeResource();
-  return (WXHBRUSH) backgroundBrush->GetResourceHandle();
+    // Note that this will be cleaned up in wxApp::OnIdle, if backgroundBrush
+    // has a zero usage count.
+    backgroundBrush->RealizeResource();
+    return (WXHBRUSH) backgroundBrush->GetResourceHandle();
 }
 
 long wxListBox::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
 {
-#if 0
-  switch (nMsg)
-  {
-        case WM_INITDIALOG:
-        case WM_ACTIVATE:
-        case WM_SETFOCUS:
-        case WM_KILLFOCUS:
-	case WM_CREATE:
-	case WM_PAINT:
-	case WM_QUERYDRAGICON:
-        case WM_SIZE:
-        case WM_RBUTTONDOWN:
-        case WM_RBUTTONUP:
-        case WM_RBUTTONDBLCLK:
-        case WM_MBUTTONDOWN:
-        case WM_MBUTTONUP:
-        case WM_MBUTTONDBLCLK:
-        case WM_LBUTTONDOWN:
-        case WM_LBUTTONUP:
-        case WM_LBUTTONDBLCLK:
-        case WM_MOUSEMOVE:
-        case WM_COMMAND:
-        case WM_NOTIFY:
-        case WM_DESTROY:
-        case WM_MENUSELECT:
-        case WM_INITMENUPOPUP:
-        case WM_DRAWITEM:
-        case WM_MEASUREITEM:
-        case WM_KEYDOWN:
-        case WM_KEYUP:
-        case WM_CHAR: // Always an ASCII character
-        case WM_HSCROLL:
-        case WM_VSCROLL:
-        case WM_CTLCOLORBTN:
-        case WM_CTLCOLORDLG:
-        case WM_CTLCOLORLISTBOX:
-        case WM_CTLCOLORMSGBOX:
-        case WM_CTLCOLORSCROLLBAR:
-        case WM_CTLCOLORSTATIC:
-        case WM_CTLCOLOREDIT:
-        case WM_SYSCOLORCHANGE:
-        case WM_ERASEBKGND:
-        case WM_MDIACTIVATE:
-        case WM_DROPFILES:
-        case WM_QUERYENDSESSION:
-        case WM_CLOSE:
-        case WM_GETMINMAXINFO:
-		case WM_NCHITTEST:
-            return MSWDefWindowProc(nMsg, wParam, lParam );
-    }
-#endif
-
-  return wxControl::MSWWindowProc(nMsg, wParam, lParam);
+    return wxControl::MSWWindowProc(nMsg, wParam, lParam);
 }
 
 #if wxUSE_OWNER_DRAWN
@@ -772,48 +742,50 @@ long wxListBox::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
 #define OWNER_DRAWN_LISTBOX_EXTRA_SPACE    (1)
 
 // the height is the same for all items
-// ## should be changed for LBS_OWNERDRAWVARIABLE style listboxes
-//    NB: can't forward this to wxListBoxItem because LB_SETITEMDATA
-//        message is not yet sent when we get here!
+// TODO should be changed for LBS_OWNERDRAWVARIABLE style listboxes
+
+// NB: can't forward this to wxListBoxItem because LB_SETITEMDATA
+//     message is not yet sent when we get here!
 bool wxListBox::MSWOnMeasure(WXMEASUREITEMSTRUCT *item)
 {
-  // only owner-drawn control should receive this message
-  wxCHECK( ((m_windowStyle & wxLB_OWNERDRAW) == wxLB_OWNERDRAW), FALSE );
+    // only owner-drawn control should receive this message
+    wxCHECK( ((m_windowStyle & wxLB_OWNERDRAW) == wxLB_OWNERDRAW), FALSE );
 
-  MEASUREITEMSTRUCT *pStruct = (MEASUREITEMSTRUCT *)item;
+    MEASUREITEMSTRUCT *pStruct = (MEASUREITEMSTRUCT *)item;
 
-  wxDC dc;
-  dc.SetHDC((WXHDC)CreateIC("DISPLAY", NULL, NULL, 0));
-  dc.SetFont(wxSystemSettings::GetSystemFont(wxSYS_ANSI_VAR_FONT));
+    wxDC dc;
+    dc.SetHDC((WXHDC)CreateIC(_T("DISPLAY"), NULL, NULL, 0));
+    dc.SetFont(wxSystemSettings::GetSystemFont(wxSYS_ANSI_VAR_FONT));
 
-  pStruct->itemHeight = dc.GetCharHeight() + 2*OWNER_DRAWN_LISTBOX_EXTRA_SPACE;
-  pStruct->itemWidth  = dc.GetCharWidth();
+    pStruct->itemHeight = dc.GetCharHeight() + 2*OWNER_DRAWN_LISTBOX_EXTRA_SPACE;
+    pStruct->itemWidth  = dc.GetCharWidth();
 
-  return TRUE;
+    return TRUE;
 }
 
 // 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 );
+    // only owner-drawn control should receive this message
+    wxCHECK( ((m_windowStyle & wxLB_OWNERDRAW) == wxLB_OWNERDRAW), FALSE );
+
+    DRAWITEMSTRUCT *pStruct = (DRAWITEMSTRUCT *)item;
+
+    long data = ListBox_GetItemData(GetHwnd(), pStruct->itemID);
 
-  DRAWITEMSTRUCT *pStruct = (DRAWITEMSTRUCT *)item;
-  wxListBoxItem *pItem = (wxListBoxItem *)SendMessage(hwnd, LB_GETITEMDATA, 
-                                                      pStruct->itemID, 0);
+    wxCHECK( data && (data != LB_ERR), FALSE );
 
-  wxCHECK( (int)pItem != LB_ERR, FALSE );
+    wxListBoxItem *pItem = (wxListBoxItem *)data;
 
-  wxDC dc;
-  dc.SetHDC((WXHDC)pStruct->hDC, FALSE);
-  wxRect rect(pStruct->rcItem.left, pStruct->rcItem.top,
-              pStruct->rcItem.right - pStruct->rcItem.left, 
-              pStruct->rcItem.bottom - pStruct->rcItem.top);
+    wxDC dc;
+    dc.SetHDC((WXHDC)pStruct->hDC, FALSE);
+    wxRect rect(wxPoint(pStruct->rcItem.left, pStruct->rcItem.top),
+            wxPoint(pStruct->rcItem.right, pStruct->rcItem.bottom));
 
-  return pItem->OnDrawItem(dc, rect, 
-                           (wxOwnerDrawn::wxODAction)pStruct->itemAction,
-                           (wxOwnerDrawn::wxODStatus)pStruct->itemState);
+    return pItem->OnDrawItem(dc, rect,
+            (wxOwnerDrawn::wxODAction)pStruct->itemAction,
+            (wxOwnerDrawn::wxODStatus)pStruct->itemState);
 }
 
 #endif
-  // wxUSE_OWNER_DRAWN
+    // wxUSE_OWNER_DRAWN