X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/2662e49e09dcdddd8c0c571e70893bc702449e93..baaae89f09ece7ab8a17570ee535683b9d14aeda:/src/msw/listbox.cpp

diff --git a/src/msw/listbox.cpp b/src/msw/listbox.cpp
index 34927877b2..2eeafd8a78 100644
--- a/src/msw/listbox.cpp
+++ b/src/msw/listbox.cpp
@@ -1,5 +1,5 @@
 ///////////////////////////////////////////////////////////////////////////////
-// Name:        listbox.cpp
+// Name:        src/msw/listbox.cpp
 // Purpose:     wxListBox
 // Author:      Julian Smart
 // Modified by: Vadim Zeitlin (owner drawn stuff)
@@ -20,8 +20,7 @@
     #pragma hdrstop
 #endif
 
-#include "wx/window.h"
-#include "wx/msw/private.h"
+#if wxUSE_LISTBOX
 
 #ifndef WX_PRECOMP
 #include "wx/listbox.h"
@@ -32,6 +31,9 @@
 #include "wx/utils.h"
 #endif
 
+#include "wx/window.h"
+#include "wx/msw/private.h"
+
 #include <windowsx.h>
 
 #ifdef __WXWINE__
@@ -48,8 +50,8 @@
 #endif
 
 #ifndef __TWIN32__
-    #if defined(__GNUWIN32__)
-        #include <wx/msw/gnuwin32/extra.h>
+    #ifdef __GNUWIN32_OLD__
+        #include "wx/msw/gnuwin32/extra.h"
     #endif
 #endif
 
@@ -80,9 +82,7 @@
   #endif
 #endif
 
-#if !USE_SHARED_LIBRARY
     IMPLEMENT_DYNAMIC_CLASS(wxListBox, wxControl)
-#endif
 
 // ============================================================================
 // list box item declaration and implementation
@@ -102,7 +102,7 @@ wxListBoxItem::wxListBoxItem(const wxString& str) : wxOwnerDrawn(str, FALSE)
     SetMarginWidth(0);
 }
 
-wxOwnerDrawn *wxListBox::CreateItem(size_t n)
+wxOwnerDrawn *wxListBox::CreateItem(size_t WXUNUSED(n))
 {
     return new wxListBoxItem();
 }
@@ -113,51 +113,11 @@ wxOwnerDrawn *wxListBox::CreateItem(size_t n)
 // list box control implementation
 // ============================================================================
 
-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 )
-        {
-            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 if (param == LBN_DBLCLK)
-    {
-        wxCommandEvent event(wxEVT_COMMAND_LISTBOX_DOUBLECLICKED, m_windowId);
-        event.SetEventObject( this );
-        GetEventHandler()->ProcessEvent(event) ;
-        return TRUE;
-    }
-
-    return FALSE;
-}
+// ----------------------------------------------------------------------------
+// creation
+// ----------------------------------------------------------------------------
 
-    // Listbox item
+// Listbox item
 wxListBox::wxListBox()
 {
     m_noItems = 0;
@@ -178,13 +138,14 @@ bool wxListBox::Create(wxWindow *parent,
     m_selected = 0;
 
     SetName(name);
+#if wxUSE_VALIDATORS
     SetValidator(validator);
+#endif // wxUSE_VALIDATORS
 
     if (parent)
         parent->AddChild(this);
 
-    wxSystemSettings settings;
-    SetBackgroundColour(settings.GetSystemColour(wxSYS_COLOUR_WINDOW));
+    SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW));
     SetForegroundColour(parent->GetForegroundColour());
 
     m_windowId = ( id == -1 ) ? (int)NewControlId() : id;
@@ -196,14 +157,20 @@ bool wxListBox::Create(wxWindow *parent,
     m_windowStyle = style;
 
     DWORD wstyle = WS_VISIBLE | WS_VSCROLL | WS_TABSTOP |
-                   LBS_NOTIFY | LBS_HASSTRINGS;
+                   LBS_NOTIFY | LBS_HASSTRINGS /* | WS_CLIPSIBLINGS */;
+
+    wxASSERT_MSG( !(style & wxLB_MULTIPLE) || !(style & wxLB_EXTENDED),
+                  _T("only one of listbox selection modes can be specified") );
+    if ( m_windowStyle & wxCLIP_SIBLINGS )
+        wstyle |= WS_CLIPSIBLINGS;
+
     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 ;
+        wstyle |= LBS_DISABLENOSCROLL;
     if (m_windowStyle & wxLB_HSCROLL)
         wstyle |= WS_HSCROLL;
     if (m_windowStyle & wxLB_SORT)
@@ -221,22 +188,22 @@ bool wxListBox::Create(wxWindow *parent,
     wstyle |= LBS_NOINTEGRALHEIGHT;
 
     bool want3D;
-    WXDWORD exStyle = Determine3DEffects(WS_EX_CLIENTEDGE, &want3D) ;
+    WXDWORD exStyle = Determine3DEffects(WS_EX_CLIENTEDGE, &want3D);
 
-    // Even with extended styles, need to combine with WS_BORDER
-    // for them to look right.
+    // 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,
+    m_hWnd = (WXHWND)::CreateWindowEx(exStyle, wxT("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") );
+    wxCHECK_MSG( m_hWnd, FALSE, wxT("Failed to create listbox") );
 
 #if wxUSE_CTL3D
     if (want3D)
@@ -261,47 +228,46 @@ bool wxListBox::Create(wxWindow *parent,
 
     SetSize(x, y, width, height);
 
-    Show(TRUE);
-
     return TRUE;
 }
 
 wxListBox::~wxListBox()
 {
-#if wxUSE_OWNER_DRAWN
-    size_t uiCount = m_aItems.Count();
-    while ( uiCount-- != 0 ) {
-        delete m_aItems[uiCount];
-    }
-#endif // wxUSE_OWNER_DRAWN
+    Free();
 }
 
 void wxListBox::SetupColours()
 {
-    SetBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_WINDOW));
+    SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW));
     SetForegroundColour(GetParent()->GetForegroundColour());
 }
 
-void wxListBox::SetFirstItem(int N)
-{
-    wxCHECK_RET( N >= 0 && N < m_noItems,
-                 _T("invalid index in wxListBox::SetFirstItem") );
-
-    SendMessage(GetHwnd(),LB_SETTOPINDEX,(WPARAM)N,(LPARAM)0) ;
-}
+// ----------------------------------------------------------------------------
+// implementation of wxListBoxBase methods
+// ----------------------------------------------------------------------------
 
-void wxListBox::SetFirstItem(const wxString& s)
+void wxListBox::DoSetFirstItem(int N)
 {
-    int N = FindString(s) ;
+    wxCHECK_RET( N >= 0 && N < m_noItems,
+                 wxT("invalid index in wxListBox::SetFirstItem") );
 
-    if ( N >= 0 )
-        SetFirstItem(N) ;
+    SendMessage(GetHwnd(), LB_SETTOPINDEX, (WPARAM)N, (LPARAM)0);
 }
 
 void wxListBox::Delete(int N)
 {
     wxCHECK_RET( N >= 0 && N < m_noItems,
-                 _T("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);
     m_noItems--;
@@ -309,155 +275,175 @@ void wxListBox::Delete(int N)
     SetHorizontalExtent("");
 }
 
-void wxListBox::Append(const wxString& item)
+int wxListBox::DoAppend(const wxString& item)
 {
     int index = ListBox_AddString(GetHwnd(), item);
-    m_noItems ++;
+    m_noItems++;
 
 #if wxUSE_OWNER_DRAWN
     if ( m_windowStyle & wxLB_OWNERDRAW ) {
         wxOwnerDrawn *pNewItem = CreateItem(index); // dummy argument
         pNewItem->SetName(item);
-        m_aItems.Add(pNewItem);
+        m_aItems.Insert(pNewItem, index);
         ListBox_SetItemData(GetHwnd(), index, pNewItem);
+        pNewItem->SetFont(GetFont());
     }
-#endif
+#endif // wxUSE_OWNER_DRAWN
 
     SetHorizontalExtent(item);
+
+    return index;
 }
 
-void wxListBox::Append(const wxString& item, void *Client_data)
+void wxListBox::DoSetItems(const wxArrayString& choices, void** clientData)
 {
-    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(_T("Can't use client data with owner-drawn listboxes"));
+    // avoid flicker - but don't need to do this for a hidden listbox
+    bool hideAndShow = IsShown();
+    if ( hideAndShow )
+    {
+        ShowWindow(GetHwnd(), SW_HIDE);
     }
-    else
-#endif
-
-    ListBox_SetItemData(GetHwnd(), index, Client_data);
-
-    SetHorizontalExtent(item);
-}
 
-void wxListBox::Set(int n, const wxString *choices, void** clientData)
-{
-    ShowWindow(GetHwnd(), SW_HIDE);
     ListBox_ResetContent(GetHwnd());
+
+    m_noItems = choices.GetCount();
     int i;
-    for (i = 0; i < n; i++)
+    for (i = 0; i < m_noItems; i++)
     {
         ListBox_AddString(GetHwnd(), choices[i]);
         if ( clientData )
+        {
+#if wxUSE_OWNER_DRAWN
+            if ( m_windowStyle & wxLB_OWNERDRAW )
+            {
+                wxASSERT_MSG(clientData[i] == NULL,
+                             wxT("Can't use client data with owner-drawn listboxes"));
+            }
             ListBox_SetItemData(GetHwnd(), i, clientData[i]);
+#else // !wxUSE_OWNER_DRAWN
+            ListBox_SetItemData(GetHwnd(), i, clientData[i]);
+#endif // wxUSE_OWNER_DRAWN/!wxUSE_OWNER_DRAWN
+        }
     }
-    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();
+        WX_CLEAR_ARRAY(m_aItems);
 
         // then create new ones
-        for (ui = 0; ui < (size_t)n; ui++) {
+        for ( size_t 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);
-
-            wxASSERT_MSG(clientData[ui] == NULL,
-                    _T("Can't use client data with owner-drawn listboxes"));
         }
     }
-#endif
+#endif // wxUSE_OWNER_DRAWN
 
-    SetHorizontalExtent("");
-    ShowWindow(GetHwnd(), SW_SHOW);
+    SetHorizontalExtent();
+
+    if ( hideAndShow )
+    {
+        // show the listbox back if we hid it
+        ShowWindow(GetHwnd(), SW_SHOW);
+    }
 }
 
 int wxListBox::FindString(const wxString& s) const
 {
     int pos = ListBox_FindStringExact(GetHwnd(), (WPARAM)-1, s);
     if (pos == LB_ERR)
-        return -1;
+        return wxNOT_FOUND;
     else
         return pos;
 }
 
 void wxListBox::Clear()
 {
+    Free();
+
     ListBox_ResetContent(GetHwnd());
 
+    m_noItems = 0;
+    SetHorizontalExtent();
+}
+
+void wxListBox::Free()
+{
 #if wxUSE_OWNER_DRAWN
-    size_t uiCount = m_aItems.Count();
-    while ( uiCount-- != 0 ) {
-        delete m_aItems[uiCount];
+    if ( m_windowStyle & wxLB_OWNERDRAW )
+    {
+        WX_CLEAR_ARRAY(m_aItems);
     }
-
-    m_aItems.Clear();
+    else
 #endif // wxUSE_OWNER_DRAWN
-
-    m_noItems = 0;
-    ListBox_GetHorizontalExtent(GetHwnd());
+    if ( HasClientObjectData() )
+    {
+        for ( size_t n = 0; n < (size_t)m_noItems; n++ )
+        {
+            delete GetClientObject(n);
+        }
+    }
 }
 
 void wxListBox::SetSelection(int N, bool select)
 {
     wxCHECK_RET( N >= 0 && N < m_noItems,
-                 _T("invalid index in wxListBox::SetSelection") );
+                 wxT("invalid index in wxListBox::SetSelection") );
 
-    if ((m_windowStyle & wxLB_MULTIPLE) || (m_windowStyle & wxLB_EXTENDED))
+    if ( HasMultipleSelection() )
+    {
         SendMessage(GetHwnd(), LB_SETSEL, select, N);
+    }
     else
     {
-        int N1 = N;
-        if (!select)
-            N1 = -1;
-        SendMessage(GetHwnd(), LB_SETCURSEL, N1, 0);
+        SendMessage(GetHwnd(), LB_SETCURSEL, select ? N : -1, 0);
     }
 }
 
-bool wxListBox::Selected(int N) const
+bool wxListBox::IsSelected(int N) const
 {
     wxCHECK_MSG( N >= 0 && N < m_noItems, FALSE,
-                 _T("invalid index in wxListBox::Selected") );
+                 wxT("invalid index in wxListBox::Selected") );
 
     return SendMessage(GetHwnd(), LB_GETSEL, N, 0) == 0 ? FALSE : TRUE;
 }
 
-void wxListBox::Deselect(int N)
+wxClientData* wxListBox::DoGetItemClientObject(int n) const
 {
-    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);
+    return (wxClientData *)DoGetItemClientData(n);
 }
 
-void *wxListBox::GetClientData(int N) const
+void *wxListBox::DoGetItemClientData(int n) const
 {
-    wxCHECK_MSG( N >= 0 && N < m_noItems, NULL,
-                 _T("invalid index in wxListBox::GetClientData") );
+    wxCHECK_MSG( n >= 0 && n < m_noItems, NULL,
+                 wxT("invalid index in wxListBox::GetClientData") );
 
-    return (void *)SendMessage(GetHwnd(), LB_GETITEMDATA, N, 0);
+    return (void *)SendMessage(GetHwnd(), LB_GETITEMDATA, n, 0);
 }
 
-void wxListBox::SetClientData(int N, void *Client_data)
+void wxListBox::DoSetItemClientObject(int n, wxClientData* clientData)
 {
-    wxCHECK_RET( N >= 0 && N < m_noItems,
-                 _T("invalid index in wxListBox::SetClientData") );
+    DoSetItemClientData(n, clientData);
+}
+
+void wxListBox::DoSetItemClientData(int n, void *clientData)
+{
+    wxCHECK_RET( n >= 0 && n < m_noItems,
+                 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, Client_data) == LB_ERR )
-        wxLogDebug(_T("LB_SETITEMDATA failed"));
+    if ( ListBox_SetItemData(GetHwnd(), n, clientData) == LB_ERR )
+        wxLogDebug(wxT("LB_SETITEMDATA failed"));
 }
 
 // Return number of selections and an array of selected integers
@@ -465,40 +451,50 @@ int wxListBox::GetSelections(wxArrayInt& aSelections) const
 {
     aSelections.Empty();
 
-    if ((m_windowStyle & wxLB_MULTIPLE) || (m_windowStyle & wxLB_EXTENDED))
+    if ( HasMultipleSelection() )
     {
-        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!"));
-            }
+        int countSel = ListBox_GetSelCount(GetHwnd());
+        if ( countSel == LB_ERR )
+        {
+            wxLogDebug(_T("ListBox_GetSelCount failed"));
+        }
+        else if ( countSel != 0 )
+        {
+            int *selections = new int[countSel];
 
-            aSelections.Alloc(no_sel);
-            for ( int n = 0; n < no_sel; n++ )
-                aSelections.Add(selections[n]);
+            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;
         }
 
-        return no_sel;
+        return countSel;
     }
     else  // single-selection listbox
     {
-        aSelections.Add(ListBox_GetCurSel(GetHwnd()));
+        if (ListBox_GetCurSel(GetHwnd()) > -1)
+            aSelections.Add(ListBox_GetCurSel(GetHwnd()));
 
-        return 1;
+        return aSelections.Count();
     }
 }
 
 // Get single selection, for single choice list items
 int wxListBox::GetSelection() const
 {
-    wxCHECK_MSG( !(m_windowStyle & wxLB_MULTIPLE) &&
-                 !(m_windowStyle & wxLB_EXTENDED),
+    wxCHECK_MSG( !HasMultipleSelection(),
                  -1,
-                 _T("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());
 }
@@ -507,7 +503,7 @@ int wxListBox::GetSelection() const
 wxString wxListBox::GetString(int N) const
 {
     wxCHECK_MSG( N >= 0 && N < m_noItems, "",
-                 _T("invalid index in wxListBox::GetClientData") );
+                 wxT("invalid index in wxListBox::GetClientData") );
 
     int len = ListBox_GetTextLen(GetHwnd(), N);
 
@@ -519,6 +515,90 @@ wxString wxListBox::GetString(int N) const
     return result;
 }
 
+void
+wxListBox::DoInsertItems(const wxArrayString& items, int pos)
+{
+    wxCHECK_RET( pos >= 0 && pos <= m_noItems,
+                 wxT("invalid index in wxListBox::InsertItems") );
+
+    int nItems = items.GetCount();
+    for ( int i = 0; i < nItems; i++ )
+    {
+        int idx = ListBox_InsertString(GetHwnd(), i + pos, items[i]);
+
+#if wxUSE_OWNER_DRAWN
+        if ( m_windowStyle & wxLB_OWNERDRAW )
+        {
+            wxOwnerDrawn *pNewItem = CreateItem(idx);
+            pNewItem->SetName(items[i]);
+            pNewItem->SetFont(GetFont());
+            m_aItems.Insert(pNewItem, idx);
+
+            ListBox_SetItemData(GetHwnd(), idx, pNewItem);
+        }
+#endif // wxUSE_OWNER_DRAWN
+    }
+
+    m_noItems += nItems;
+
+    SetHorizontalExtent();
+}
+
+void wxListBox::SetString(int N, const wxString& s)
+{
+    wxCHECK_RET( N >= 0 && N < m_noItems,
+                 wxT("invalid index in wxListBox::SetString") );
+
+    // remember the state of the item
+    bool wasSelected = IsSelected(N);
+
+    void *oldData = NULL;
+    wxClientData *oldObjData = NULL;
+    if ( m_clientDataItemsType == wxClientData_Void )
+        oldData = GetClientData(N);
+    else if ( m_clientDataItemsType == wxClientData_Object )
+        oldObjData = GetClientObject(N);
+
+    // delete and recreate it
+    SendMessage(GetHwnd(), LB_DELETESTRING, N, 0);
+
+    int newN = N;
+    if ( N == m_noItems - 1 )
+        newN = -1;
+
+    ListBox_InsertString(GetHwnd(), newN, s);
+
+    // restore the client data
+    if ( oldData )
+        SetClientData(N, oldData);
+    else if ( oldObjData )
+        SetClientObject(N, oldObjData);
+
+    // we may have lost the selection
+    if ( wasSelected )
+        Select(N);
+
+#if wxUSE_OWNER_DRAWN
+    if ( m_windowStyle & wxLB_OWNERDRAW )
+    {
+        // 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
+}
+
+int wxListBox::GetCount() const
+{
+    return m_noItems;
+}
+
+// ----------------------------------------------------------------------------
+// helpers
+// ----------------------------------------------------------------------------
+
 // 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.
@@ -529,7 +609,7 @@ void wxListBox::SetHorizontalExtent(const wxString& s)
         return;
     TEXTMETRIC lpTextMetric;
 
-    if (s != _T(""))
+    if ( !s.IsEmpty() )
     {
         int existingExtent = (int)SendMessage(GetHwnd(), LB_GETHORIZONTALEXTENT, 0, 0L);
         HDC dc = GetWindowDC(GetHwnd());
@@ -548,7 +628,6 @@ void wxListBox::SetHorizontalExtent(const wxString& s)
         ReleaseDC(GetHwnd(), dc);
         if (extentX > existingExtent)
             SendMessage(GetHwnd(), LB_SETHORIZONTALEXTENT, LOWORD(extentX), 0L);
-        return;
     }
     else
     {
@@ -578,80 +657,7 @@ void wxListBox::SetHorizontalExtent(const wxString& s)
     }
 }
 
-void
-wxListBox::InsertItems(int nItems, const wxString items[], int pos)
-{
-    wxCHECK_RET( pos >= 0 && pos <= m_noItems,
-                 _T("invalid index in wxListBox::InsertItems") );
-
-    int i;
-    for (i = 0; i < nItems; i++)
-        ListBox_InsertString(GetHwnd(), i + pos, items[i]);
-    m_noItems += nItems;
-
-    SetHorizontalExtent(_T(""));
-}
-
-void wxListBox::SetString(int N, const wxString& s)
-{
-    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);
-#endif  //USE_OWNER_DRAWN
-}
-
-int wxListBox::Number () const
-{
-    return m_noItems;
-}
-
-// For single selection items only
-wxString wxListBox::GetStringSelection () const
-{
-    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)
-    {
-        SetSelection (sel, flag);
-        return TRUE;
-    }
-    else
-        return FALSE;
-}
-
-wxSize wxListBox::DoGetBestSize()
+wxSize wxListBox::DoGetBestSize() const
 {
     // find the widest string
     int wLine;
@@ -675,60 +681,62 @@ wxSize wxListBox::DoGetBestSize()
 
     wListbox += 3*cx;
 
-    int hListbox = EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy)*(wxMax(m_noItems, 7));
+    // 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);
 }
 
-// Is this the right thing? Won't setselection generate a command
-// event too? No! It'll just generate a setselection event.
-// But we still can't have this being called whenever a real command
-// is generated, because it sets the selection, which will already
-// have been done! (Unless we have an optional argument for calling
-// by the actual window system, or a separate function, ProcessCommand)
-void wxListBox::Command (wxCommandEvent & event)
+// ----------------------------------------------------------------------------
+// callbacks
+// ----------------------------------------------------------------------------
+
+bool wxListBox::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
 {
-    if (event.m_extraLong)
-        SetSelection (event.m_commandInt);
+    wxEventType evtType;
+    if ( param == LBN_SELCHANGE )
+    {
+        evtType = wxEVT_COMMAND_LISTBOX_SELECTED;
+    }
+    else if ( param == LBN_DBLCLK )
+    {
+        evtType = wxEVT_COMMAND_LISTBOX_DOUBLECLICKED;
+    }
     else
     {
-        Deselect (event.m_commandInt);
-        return;
+        // some event we're not interested in
+        return FALSE;
     }
-    ProcessCommand (event);
-}
 
-WXHBRUSH wxListBox::OnCtlColor(WXHDC pDC, WXHWND pWnd, WXUINT nCtlColor,
-        WXUINT message, WXWPARAM wParam, WXLPARAM lParam)
-{
-#if wxUSE_CTL3D
-    if ( m_useCtl3D )
+    wxCommandEvent event(evtType, m_windowId);
+    event.SetEventObject( this );
+
+    wxArrayInt aSelections;
+    int n, count = GetSelections(aSelections);
+    if ( count > 0 )
     {
-        HBRUSH hbrush = Ctl3dCtlColorEx(message, wParam, lParam);
-        return (WXHBRUSH) hbrush;
+        n = aSelections[0];
+        if ( HasClientObjectData() )
+            event.SetClientObject( GetClientObject(n) );
+        else if ( HasClientUntypedData() )
+            event.SetClientData( GetClientData(n) );
+        event.SetString( GetString(n) );
     }
-#endif
-
-    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()));
+    {
+        n = -1;
+    }
 
-    wxBrush *backgroundBrush = wxTheBrushList->FindOrCreateBrush(GetBackgroundColour(), wxSOLID);
+    event.m_commandInt = 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 GetEventHandler()->ProcessEvent(event);
 }
 
-long wxListBox::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
-{
-    return wxControl::MSWWindowProc(nMsg, wParam, lParam);
-}
+// ----------------------------------------------------------------------------
+// wxCheckListBox support
+// ----------------------------------------------------------------------------
 
 #if wxUSE_OWNER_DRAWN
 
@@ -751,13 +759,19 @@ bool wxListBox::MSWOnMeasure(WXMEASUREITEMSTRUCT *item)
 
     MEASUREITEMSTRUCT *pStruct = (MEASUREITEMSTRUCT *)item;
 
+    HDC hdc = CreateIC(wxT("DISPLAY"), NULL, NULL, 0);
+
     wxDC dc;
-    dc.SetHDC((WXHDC)CreateIC(_T("DISPLAY"), NULL, NULL, 0));
-    dc.SetFont(wxSystemSettings::GetSystemFont(wxSYS_ANSI_VAR_FONT));
+    dc.SetHDC((WXHDC)hdc);
+    dc.SetFont(wxSystemSettings::GetFont(wxSYS_ANSI_VAR_FONT));
 
     pStruct->itemHeight = dc.GetCharHeight() + 2*OWNER_DRAWN_LISTBOX_EXTRA_SPACE;
     pStruct->itemWidth  = dc.GetCharWidth();
 
+    dc.SetHDC(0);
+
+    DeleteDC(hdc);
+
     return TRUE;
 }
 
@@ -768,6 +782,11 @@ bool wxListBox::MSWOnDraw(WXDRAWITEMSTRUCT *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
+    if ( itemID == (UINT)-1 )
+        return FALSE;
 
     long data = ListBox_GetItemData(GetHwnd(), pStruct->itemID);
 
@@ -775,15 +794,15 @@ bool wxListBox::MSWOnDraw(WXDRAWITEMSTRUCT *item)
 
     wxListBoxItem *pItem = (wxListBoxItem *)data;
 
-    wxDC dc;
-    dc.SetHDC((WXHDC)pStruct->hDC, FALSE);
+    wxDCTemp dc((WXHDC)pStruct->hDC);
     wxRect rect(wxPoint(pStruct->rcItem.left, pStruct->rcItem.top),
-            wxPoint(pStruct->rcItem.right, pStruct->rcItem.bottom));
+                wxPoint(pStruct->rcItem.right, pStruct->rcItem.bottom));
 
     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