fixing osx_cocoa

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

diff --git a/src/msw/listbox.cpp b/src/msw/listbox.cpp
index 03a5c497ca55a1de0871b369455541ccac9508b1..69565096f7b90a0fd9dc8c3cea7892829375b4fc 100644 (file)
--- a/src/msw/listbox.cpp
+++ b/src/msw/listbox.cpp
@@ -40,75 +40,6 @@
     #include  "wx/ownerdrw.h"
 #endif
 
     #include  "wx/ownerdrw.h"
 #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_NO_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
-
-/*
-TODO PROPERTIES
-    selection
-    content
-        item
-*/
-

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


@@ -118,18 +49,25 @@ TODO PROPERTIES
 class wxListBoxItem : public wxOwnerDrawn
 {
 public:
 class wxListBoxItem : public wxOwnerDrawn
 {
 public:

-    wxListBoxItem(const wxString& str = wxEmptyString);
-};
+    wxListBoxItem(wxListBox *parent)
+        { m_parent = parent; }

 
 

-wxListBoxItem::wxListBoxItem(const wxString& str) : wxOwnerDrawn(str, false)
-{
-    // no bitmaps/checkmarks
-    SetMarginWidth(0);
-}
+    wxListBox *GetParent() const
+        { return m_parent; }
+
+    int GetIndex() const
+        { return m_parent->GetItemIndex(const_cast<wxListBoxItem*>(this)); }
+
+    wxString GetName() const
+        { return m_parent->GetString(GetIndex()); }
+
+private:
+    wxListBox *m_parent;
+};

 
 wxOwnerDrawn *wxListBox::CreateLboxItem(size_t WXUNUSED(n))
 {
 
 wxOwnerDrawn *wxListBox::CreateLboxItem(size_t WXUNUSED(n))
 {

-    return new wxListBoxItem();
+    return new wxListBoxItem(this);

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


@@ -142,11 +80,11 @@ wxOwnerDrawn *wxListBox::CreateLboxItem(size_t WXUNUSED(n))
 // creation
 // ----------------------------------------------------------------------------
 
 // creation
 // ----------------------------------------------------------------------------
 

-// Listbox item
-wxListBox::wxListBox()
+void wxListBox::Init()

 {
     m_noItems = 0;
     m_updateHorizontalExtent = false;
 {
     m_noItems = 0;
     m_updateHorizontalExtent = false;

+    m_selectedByKeyboard = false;

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


@@ -158,15 +96,12 @@ bool wxListBox::Create(wxWindow *parent,
                        const wxValidator& validator,
                        const wxString& name)
 {
                        const wxValidator& validator,
                        const wxString& name)
 {

-    m_noItems = 0;
-    m_updateHorizontalExtent = false;
-

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

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

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


@@ -179,7 +114,6 @@ bool wxListBox::Create(wxWindow *parent,
     }
 
     // now we can compute our best size correctly, so do it again
     }
 
     // now we can compute our best size correctly, so do it again

-    InvalidateBestSize();

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


@@ -216,7 +150,7 @@ WXDWORD wxListBox::MSWGetStyle(long style, WXDWORD *exstyle) const
     msStyle |= LBS_NOINTEGRALHEIGHT;
 
     wxASSERT_MSG( !(style & wxLB_MULTIPLE) || !(style & wxLB_EXTENDED),
     msStyle |= LBS_NOINTEGRALHEIGHT;
 
     wxASSERT_MSG( !(style & wxLB_MULTIPLE) || !(style & wxLB_EXTENDED),

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

 
     if ( style & wxLB_MULTIPLE )
         msStyle |= LBS_MULTIPLESEL;
 
     if ( style & wxLB_MULTIPLE )
         msStyle |= LBS_MULTIPLESEL;


@@ -224,7 +158,7 @@ WXDWORD wxListBox::MSWGetStyle(long style, WXDWORD *exstyle) const
         msStyle |= LBS_EXTENDEDSEL;
 
     wxASSERT_MSG( !(style & wxLB_ALWAYS_SB) || !(style & wxLB_NO_SB),
         msStyle |= LBS_EXTENDEDSEL;
 
     wxASSERT_MSG( !(style & wxLB_ALWAYS_SB) || !(style & wxLB_NO_SB),

-                  _T( "Conflicting styles wxLB_ALWAYS_SB and wxLB_NO_SB." ) );
+                  wxT( "Conflicting styles wxLB_ALWAYS_SB and wxLB_NO_SB." ) );

 
     if ( !(style & wxLB_NO_SB) )
     {
 
     if ( !(style & wxLB_NO_SB) )
     {


@@ -254,7 +188,7 @@ WXDWORD wxListBox::MSWGetStyle(long style, WXDWORD *exstyle) const
 void wxListBox::OnInternalIdle()
 {
     wxWindow::OnInternalIdle();
 void wxListBox::OnInternalIdle()
 {
     wxWindow::OnInternalIdle();

-    
+

     if (m_updateHorizontalExtent)
     {
         SetHorizontalExtent(wxEmptyString);
     if (m_updateHorizontalExtent)
     {
         SetHorizontalExtent(wxEmptyString);


@@ -262,6 +196,22 @@ void wxListBox::OnInternalIdle()
     }
 }
 
     }
 }
 

+void wxListBox::MSWOnItemsChanged()
+{
+    // we need to do two things when items change: update their max horizontal
+    // extent so that horizontal scrollbar could be shown or hidden as
+    // appropriate and also invlaidate the best size
+    //
+    // updating the max extent is slow (it's an O(N) operation) and so we defer
+    // it until the idle time but the best size should be invalidated
+    // immediately doing it in idle time is too late -- layout using incorrect
+    // old best size will have been already done by then
+
+    m_updateHorizontalExtent = true;
+
+    InvalidateBestSize();
+}
+

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


@@ -279,11 +229,18 @@ void wxListBox::DoDeleteOneItem(unsigned int n)
     wxCHECK_RET( IsValid(n),
                  wxT("invalid index in wxListBox::Delete") );
 
     wxCHECK_RET( IsValid(n),
                  wxT("invalid index in wxListBox::Delete") );
 

+#if wxUSE_OWNER_DRAWN
+    if ( HasFlag(wxLB_OWNERDRAW) )
+    {
+        delete m_aItems[n];
+        m_aItems.RemoveAt(n);
+    }
+#endif // wxUSE_OWNER_DRAWN
+

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

-    // SetHorizontalExtent(wxEmptyString); can be slow
-    m_updateHorizontalExtent = true;
+    MSWOnItemsChanged();

 
     UpdateOldSelections();
 }
 
     UpdateOldSelections();
 }


@@ -303,26 +260,21 @@ int wxListBox::FindString(const wxString& s, bool bCase) const
 
 void wxListBox::DoClear()
 {
 
 void wxListBox::DoClear()
 {

-    Free();
+#if wxUSE_OWNER_DRAWN
+    if ( HasFlag(wxLB_OWNERDRAW) )
+    {
+        WX_CLEAR_ARRAY(m_aItems);
+    }
+#endif // wxUSE_OWNER_DRAWN

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

-    m_updateHorizontalExtent = true;
+    MSWOnItemsChanged();

 
     UpdateOldSelections();
 }
 
 
     UpdateOldSelections();
 }
 

-void wxListBox::Free()
-{
-#if wxUSE_OWNER_DRAWN
-    if ( m_windowStyle & wxLB_OWNERDRAW )
-    {
-        WX_CLEAR_ARRAY(m_aItems);
-    }
-#endif // wxUSE_OWNER_DRAWN
-}
-

 void wxListBox::DoSetSelection(int N, bool select)
 {
     wxCHECK_RET( N == wxNOT_FOUND || IsValid(N),
 void wxListBox::DoSetSelection(int N, bool select)
 {
     wxCHECK_RET( N == wxNOT_FOUND || IsValid(N),


@@ -330,7 +282,11 @@ void wxListBox::DoSetSelection(int N, bool select)
 
     if ( HasMultipleSelection() )
     {
 
     if ( HasMultipleSelection() )
     {

-        SendMessage(GetHwnd(), LB_SETSEL, select, N);
+        // Setting selection to -1 should deselect everything.
+        const bool deselectAll = N == wxNOT_FOUND;
+        SendMessage(GetHwnd(), LB_SETSEL,
+                    deselectAll ? FALSE : select,
+                    deselectAll ? -1 : N);

     }
     else
     {
     }
     else
     {


@@ -350,17 +306,11 @@ bool wxListBox::IsSelected(int N) const
 
 void *wxListBox::DoGetItemClientData(unsigned int n) const
 {
 
 void *wxListBox::DoGetItemClientData(unsigned int n) const
 {

-    wxCHECK_MSG( IsValid(n), NULL,
-                 wxT("invalid index in wxListBox::GetClientData") );
-

     return (void *)SendMessage(GetHwnd(), LB_GETITEMDATA, n, 0);
 }
 
 void wxListBox::DoSetItemClientData(unsigned int n, void *clientData)
 {
     return (void *)SendMessage(GetHwnd(), LB_GETITEMDATA, n, 0);
 }
 
 void wxListBox::DoSetItemClientData(unsigned int n, void *clientData)
 {

-    wxCHECK_RET( IsValid(n),
-                 wxT("invalid index in wxListBox::SetClientData") );
-

     if ( ListBox_SetItemData(GetHwnd(), n, clientData) == LB_ERR )
     {
         wxLogDebug(wxT("LB_SETITEMDATA failed"));
     if ( ListBox_SetItemData(GetHwnd(), n, clientData) == LB_ERR )
     {
         wxLogDebug(wxT("LB_SETITEMDATA failed"));


@@ -377,7 +327,7 @@ int wxListBox::GetSelections(wxArrayInt& aSelections) const
         int countSel = ListBox_GetSelCount(GetHwnd());
         if ( countSel == LB_ERR )
         {
         int countSel = ListBox_GetSelCount(GetHwnd());
         if ( countSel == LB_ERR )
         {

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

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


@@ -469,7 +419,6 @@ int wxListBox::DoInsertItems(const wxArrayStringsAdapter & items,
         if ( HasFlag(wxLB_OWNERDRAW) )
         {
             wxOwnerDrawn *pNewItem = CreateLboxItem(n);
         if ( HasFlag(wxLB_OWNERDRAW) )
         {
             wxOwnerDrawn *pNewItem = CreateLboxItem(n);

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

             pNewItem->SetFont(GetFont());
             m_aItems.Insert(pNewItem, n);
         }
             pNewItem->SetFont(GetFont());
             m_aItems.Insert(pNewItem, n);
         }


@@ -477,14 +426,14 @@ int wxListBox::DoInsertItems(const wxArrayStringsAdapter & items,
         AssignNewItemClientData(n, clientData, i, type);
     }
 
         AssignNewItemClientData(n, clientData, i, type);
     }
 

-    m_updateHorizontalExtent = true;
+    MSWOnItemsChanged();

 
     UpdateOldSelections();
 
     return n;
 }
 
 
     UpdateOldSelections();
 
     return n;
 }
 

-int wxListBox::DoListHitTest(const wxPoint& point) const
+int wxListBox::DoHitTestList(const wxPoint& point) const

 {
     LRESULT lRes = ::SendMessage(GetHwnd(), LB_ITEMFROMPOINT,
                                  0, MAKELPARAM(point.x, point.y));
 {
     LRESULT lRes = ::SendMessage(GetHwnd(), LB_ITEMFROMPOINT,
                                  0, MAKELPARAM(point.x, point.y));


@@ -524,19 +473,11 @@ void wxListBox::SetString(unsigned int n, const wxString& s)
     else if ( oldObjData )
         SetClientObject(n, oldObjData);
 
     else if ( oldObjData )
         SetClientObject(n, oldObjData);
 

-#if wxUSE_OWNER_DRAWN
-    if ( m_windowStyle & wxLB_OWNERDRAW )
-    {
-        // update item's text
-        m_aItems[n]->SetName(s);
-    }
-#endif  //USE_OWNER_DRAWN
-

     // we may have lost the selection
     if ( wasSelected )
         Select(n);
 
     // we may have lost the selection
     if ( wasSelected )
         Select(n);
 

-    m_updateHorizontalExtent = true;
+    MSWOnItemsChanged();

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


@@ -550,9 +491,6 @@ unsigned int wxListBox::GetCount() const
 
 void wxListBox::SetHorizontalExtent(const wxString& s)
 {
 
 void wxListBox::SetHorizontalExtent(const wxString& s)
 {

-    // 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;
     // the rest is only necessary if we want a horizontal scrollbar
     if ( !HasFlag(wxHSCROLL) )
         return;


@@ -635,25 +573,30 @@ wxSize wxListBox::DoGetBestClientSize() const
 
 bool wxListBox::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
 {
 
 bool wxListBox::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
 {

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

     wxEventType evtType;
     wxEventType evtType;

-    int n;
+    int n = wxNOT_FOUND;

     if ( param == LBN_SELCHANGE )
     {
     if ( param == LBN_SELCHANGE )
     {

+        if ( HasMultipleSelection() )
+            return CalcAndSendEvent();
+

         evtType = wxEVT_COMMAND_LISTBOX_SELECTED;
         evtType = wxEVT_COMMAND_LISTBOX_SELECTED;

-        n = SendMessage(GetHwnd(), LB_GETCARETINDEX, 0, 0);

 
 

-        // NB: conveniently enough, LB_ERR is the same as wxNOT_FOUND
+        if ( m_selectedByKeyboard )
+        {
+            // We shouldn't use the mouse position to find the item as mouse
+            // can be anywhere, ask the listbox itself. Notice that this can't
+            // be used when the item is selected using the mouse however as
+            // LB_GETCARETINDEX will always return a valid item, even if the
+            // mouse is clicked below all the items, which is why we find the
+            // item ourselves below in this case.
+            n = SendMessage(GetHwnd(), LB_GETCARETINDEX, 0, 0);
+        }
+        //else: n will be determined below from the mouse position

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

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

     }
     else
     {
     }
     else
     {


@@ -661,36 +604,108 @@ bool wxListBox::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
         return false;
     }
 
         return false;
     }
 

-    // retrieve the affected item
+    // Find the item position if it was a mouse-generated selection event or a
+    // double click event (which is always generated using the mouse)

     if ( n == wxNOT_FOUND )
     if ( n == wxNOT_FOUND )

-        return false;
+    {
+        const DWORD pos = ::GetMessagePos();
+        const wxPoint pt(GET_X_LPARAM(pos), GET_Y_LPARAM(pos));
+        n = HitTest(ScreenToClient(wxPoint(pt)));
+    }

 
 

-    wxCommandEvent event(evtType, m_windowId);
-    event.SetEventObject(this);
+    // We get events even when mouse is clicked outside of any valid item from
+    // Windows, just ignore them.
+    if ( n == wxNOT_FOUND )
+       return false;

 
 

-    if ( HasClientObjectData() )
-        event.SetClientObject( GetClientObject(n) );
-    else if ( HasClientUntypedData() )
-        event.SetClientData( GetClientData(n) );
+    if ( param == LBN_SELCHANGE )
+    {
+        if ( !DoChangeSingleSelection(n) )
+            return false;
+    }

 
 

-    event.SetString(GetString(n));
-    event.SetInt(n);
+    // Do generate an event otherwise.
+    return SendEvent(evtType, n, true /* selection */);
+}

 
 

-    return HandleWindowEvent(event);
+WXLRESULT
+wxListBox::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
+{
+    // Remember whether there was a keyboard or mouse event before
+    // LBN_SELCHANGE: this allows us to correctly determine the item affected
+    // by it in MSWCommand() above in any case.
+    if ( WM_KEYFIRST <= nMsg && nMsg <= WM_KEYLAST )
+        m_selectedByKeyboard = true;
+    else if ( WM_MOUSEFIRST <= nMsg && nMsg <= WM_MOUSELAST )
+        m_selectedByKeyboard = false;
+
+    return wxListBoxBase::MSWWindowProc(nMsg, wParam, lParam);

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

-// wxCheckListBox support
+// owner-drawn list boxes support

 // ----------------------------------------------------------------------------
 
 #if wxUSE_OWNER_DRAWN
 
 // ----------------------------------------------------------------------------
 
 #if wxUSE_OWNER_DRAWN
 

+// misc overloaded methods
+// -----------------------
+
+bool wxListBox::SetFont(const wxFont &font)
+{
+    if ( HasFlag(wxLB_OWNERDRAW) )
+    {
+        const unsigned count = m_aItems.GetCount();
+        for ( unsigned i = 0; i < count; i++ )
+            m_aItems[i]->SetFont(font);
+    }
+
+    wxListBoxBase::SetFont(font);
+
+    return true;
+}
+
+bool wxListBox::GetItemRect(size_t n, wxRect& rect) const
+{
+    wxCHECK_MSG( IsValid(n), false,
+                 wxT("invalid index in wxListBox::GetItemRect") );
+
+    RECT rc;
+
+    if ( ListBox_GetItemRect(GetHwnd(), n, &rc) != LB_ERR )
+    {
+        rect = wxRectFromRECT(rc);
+        return true;
+    }
+    else
+    {
+        // couldn't retrieve rect: for example, item isn't visible
+        return false;
+    }
+}
+
+bool wxListBox::RefreshItem(size_t n)
+{
+    wxRect rect;
+    if ( !GetItemRect(n, rect) )
+        return false;
+
+    RECT rc;
+    wxCopyRectToRECT(rect, rc);
+
+    return ::InvalidateRect((HWND)GetHWND(), &rc, FALSE) == TRUE;
+}
+
+

 // drawing
 // -------
 
 // drawing
 // -------
 

-// space beneath/above each row in pixels
-// "standard" checklistbox use 1 here, some might prefer 2. 0 is ugly.
-#define OWNER_DRAWN_LISTBOX_EXTRA_SPACE    (1)
+namespace
+{
+    // space beneath/above each row in pixels
+    static const int LISTBOX_EXTRA_SPACE = 1;
+
+} // anonymous namespace

 
 // the height is the same for all items
 // TODO should be changed for LBS_OWNERDRAWVARIABLE style listboxes
 
 // the height is the same for all items
 // TODO should be changed for LBS_OWNERDRAWVARIABLE style listboxes


@@ -700,7 +715,7 @@ bool wxListBox::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
 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( HasFlag(wxLB_OWNERDRAW), false );

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


@@ -714,7 +729,7 @@ bool wxListBox::MSWOnMeasure(WXMEASUREITEMSTRUCT *item)
         wxDCTemp dc((WXHDC)hdc);
         dc.SetFont(GetFont());
 
         wxDCTemp dc((WXHDC)hdc);
         dc.SetFont(GetFont());
 

-        pStruct->itemHeight = dc.GetCharHeight() + 2*OWNER_DRAWN_LISTBOX_EXTRA_SPACE;
+        pStruct->itemHeight = dc.GetCharHeight() + 2 * LISTBOX_EXTRA_SPACE;

         pStruct->itemWidth  = dc.GetCharWidth();
     }
 
         pStruct->itemWidth  = dc.GetCharWidth();
     }
 


@@ -731,7 +746,7 @@ bool wxListBox::MSWOnMeasure(WXMEASUREITEMSTRUCT *item)
 bool wxListBox::MSWOnDraw(WXDRAWITEMSTRUCT *item)
 {
     // only owner-drawn control should receive this message
 bool wxListBox::MSWOnDraw(WXDRAWITEMSTRUCT *item)
 {
     // only owner-drawn control should receive this message

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

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


@@ -745,7 +760,7 @@ bool wxListBox::MSWOnDraw(WXDRAWITEMSTRUCT *item)
 
     return pItem->OnDrawItem(dc, wxRectFromRECT(pStruct->rcItem),
                              (wxOwnerDrawn::wxODAction)pStruct->itemAction,
 
     return pItem->OnDrawItem(dc, wxRectFromRECT(pStruct->rcItem),
                              (wxOwnerDrawn::wxODAction)pStruct->itemAction,

-                             (wxOwnerDrawn::wxODStatus)pStruct->itemState);
+                             (wxOwnerDrawn::wxODStatus)(pStruct->itemState | wxOwnerDrawn::wxODHidePrefix));

 }
 
 #endif // wxUSE_OWNER_DRAWN
 }
 
 #endif // wxUSE_OWNER_DRAWN