correct access for virtual

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

diff --git a/src/msw/listbox.cpp b/src/msw/listbox.cpp
index 7abbf18e2b553e7c78cb29a50a577d046474fdd1..bc989f5d32e3f200e42db7d364acf596063f50e7 100644 (file)
--- a/src/msw/listbox.cpp
+++ b/src/msw/listbox.cpp
@@ -18,23 +18,23 @@
 
 #if wxUSE_LISTBOX
 
 
 #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"
+
+#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/window.h"

 #include "wx/msw/private.h"
 
 #include <windowsx.h>
 
 #include "wx/msw/private.h"
 
 #include <windowsx.h>
 

-#include "wx/dynarray.h"
-#include "wx/log.h"
-

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


@@ -250,15 +250,15 @@ WXDWORD wxListBox::MSWGetStyle(long style, WXDWORD *exstyle) const
 
 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::Delete(unsigned int n)

 {
 {

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

                  wxT("invalid index in wxListBox::Delete") );
 
     // for owner drawn objects, the data is used for storing wxOwnerDrawn
                  wxT("invalid index in wxListBox::Delete") );
 
     // for owner drawn objects, the data is used for storing wxOwnerDrawn


@@ -268,15 +268,13 @@ void wxListBox::Delete(int N)
 #endif // !wxUSE_OWNER_DRAWN
         if ( HasClientObjectData() )
         {
 #endif // !wxUSE_OWNER_DRAWN
         if ( HasClientObjectData() )
         {

-            delete GetClientObject(N);
+            delete GetClientObject(n);

         }
 
         }
 

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

     m_noItems--;
 
     SetHorizontalExtent(wxEmptyString);
     m_noItems--;
 
     SetHorizontalExtent(wxEmptyString);

-
-    InvalidateBestSize();

 }
 
 int wxListBox::DoAppend(const wxString& item)
 }
 
 int wxListBox::DoAppend(const wxString& item)


@@ -296,7 +294,6 @@ int wxListBox::DoAppend(const wxString& item)
 
     SetHorizontalExtent(item);
 
 
     SetHorizontalExtent(item);
 

-    InvalidateBestSize();

     return index;
 }
 
     return index;
 }
 


@@ -312,7 +309,7 @@ void wxListBox::DoSetItems(const wxArrayString& choices, void** clientData)
     ListBox_ResetContent(GetHwnd());
 
     m_noItems = choices.GetCount();
     ListBox_ResetContent(GetHwnd());
 
     m_noItems = choices.GetCount();

-    int i;
+    unsigned int i;

     for (i = 0; i < m_noItems; i++)
     {
         ListBox_AddString(GetHwnd(), choices[i]);
     for (i = 0; i < m_noItems; i++)
     {
         ListBox_AddString(GetHwnd(), choices[i]);


@@ -328,7 +325,7 @@ void wxListBox::DoSetItems(const wxArrayString& choices, void** clientData)
         WX_CLEAR_ARRAY(m_aItems);
 
         // then create new ones
         WX_CLEAR_ARRAY(m_aItems);
 
         // then create new ones

-        for ( size_t ui = 0; ui < (size_t)m_noItems; ui++ ) {
+        for ( unsigned int ui = 0; ui < m_noItems; ui++ ) {

             wxOwnerDrawn *pNewItem = CreateLboxItem(ui);
             pNewItem->SetName(choices[ui]);
             m_aItems.Add(pNewItem);
             wxOwnerDrawn *pNewItem = CreateLboxItem(ui);
             pNewItem->SetName(choices[ui]);
             m_aItems.Add(pNewItem);


@@ -344,8 +341,6 @@ void wxListBox::DoSetItems(const wxArrayString& choices, void** clientData)
         // show the listbox back if we hid it
         ShowWindow(GetHwnd(), SW_SHOW);
     }
         // show the listbox back if we hid it
         ShowWindow(GetHwnd(), SW_SHOW);
     }

-
-    InvalidateBestSize();

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


@@ -369,8 +364,6 @@ void wxListBox::Clear()
 
     m_noItems = 0;
     SetHorizontalExtent();
 
     m_noItems = 0;
     SetHorizontalExtent();

-
-    InvalidateBestSize();

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


@@ -384,7 +377,7 @@ void wxListBox::Free()
 #endif // wxUSE_OWNER_DRAWN
     if ( HasClientObjectData() )
     {
 #endif // wxUSE_OWNER_DRAWN
     if ( HasClientObjectData() )
     {

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

         {
             delete GetClientObject(n);
         }
         {
             delete GetClientObject(n);
         }


@@ -393,8 +386,7 @@ void wxListBox::Free()
 
 void wxListBox::DoSetSelection(int N, bool select)
 {
 
 void wxListBox::DoSetSelection(int N, bool select)
 {

-    wxCHECK_RET( N == wxNOT_FOUND ||
-                    (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() )


@@ -409,33 +401,33 @@ void wxListBox::DoSetSelection(int N, bool select)
 
 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") );
 
     return SendMessage(GetHwnd(), LB_GETSEL, N, 0) == 0 ? false : true;
 }
 
                  wxT("invalid index in wxListBox::Selected") );
 
     return SendMessage(GetHwnd(), LB_GETSEL, N, 0) == 0 ? false : true;
 }
 

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

 {
     return (wxClientData *)DoGetItemClientData(n);
 }
 
 {
     return (wxClientData *)DoGetItemClientData(n);
 }
 

-void *wxListBox::DoGetItemClientData(int n) const
+void *wxListBox::DoGetItemClientData(unsigned 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)
+void wxListBox::DoSetItemClientObject(unsigned int n, wxClientData* clientData)

 {
     DoSetItemClientData(n, 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


@@ -505,28 +497,28 @@ int wxListBox::GetSelection() const
 }
 
 // Find string for position
 }
 
 // Find string for position

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

 {
 {

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

                  wxT("invalid index in wxListBox::GetString") );
 
                  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, (wxChar*)wxStringBuffer(result, len + 1));
+    ListBox_GetText(GetHwnd(), n, (wxChar*)wxStringBuffer(result, len + 1));

 
     return result;
 }
 
 void
 
     return result;
 }
 
 void

-wxListBox::DoInsertItems(const wxArrayString& items, int pos)
+wxListBox::DoInsertItems(const wxArrayString& items, unsigned int pos)

 {
 {

-    wxCHECK_RET( pos >= 0 && pos <= m_noItems,
+    wxCHECK_RET( IsValidInsert(pos),

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

-    int nItems = items.GetCount();
-    for ( int i = 0; i < nItems; i++ )
+    unsigned int nItems = items.GetCount();
+    for ( unsigned int i = 0; i < nItems; i++ )

     {
         int idx = ListBox_InsertString(GetHwnd(), i + pos, items[i]);
 
     {
         int idx = ListBox_InsertString(GetHwnd(), i + pos, items[i]);
 


@@ -548,13 +540,11 @@ wxListBox::DoInsertItems(const wxArrayString& items, int pos)
     m_noItems += nItems;
 
     SetHorizontalExtent();
     m_noItems += nItems;
 
     SetHorizontalExtent();

-
-    InvalidateBestSize();

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

-    LRESULT lRes =  ::SendMessage(GetHwnd(), LB_ITEMFROMPOINT, 
+    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
                                   0L, MAKELONG(point.x, point.y));
 
     // non zero high-order word means that this item is outside of the client


@@ -562,118 +552,110 @@ int wxListBox::DoListHitTest(const wxPoint& point) const
     return HIWORD(lRes) ? wxNOT_FOUND : lRes;
 }
 
     return HIWORD(lRes) ? wxNOT_FOUND : lRes;
 }
 

-void wxListBox::SetString(int N, const wxString& s)
+void wxListBox::SetString(unsigned int n, const wxString& s)

 {
 {

-    wxCHECK_RET( N >= 0 && N < m_noItems,
+    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;
     if ( m_clientDataItemsType == wxClientData_Void )
 
     void *oldData = NULL;
     wxClientData *oldObjData = NULL;
     if ( m_clientDataItemsType == wxClientData_Void )

-        oldData = GetClientData(N);
+        oldData = GetClientData(n);

     else if ( m_clientDataItemsType == wxClientData_Object )
     else if ( m_clientDataItemsType == wxClientData_Object )

-        oldObjData = GetClientObject(N);
+        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;
 
     ListBox_InsertString(GetHwnd(), newN, s);
 
     // restore the client data
     if ( oldData )
         newN = -1;
 
     ListBox_InsertString(GetHwnd(), newN, s);
 
     // restore the client data
     if ( oldData )

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

     else if ( oldObjData )
     else if ( oldObjData )

-        SetClientObject(N, oldObjData);
+        SetClientObject(n, oldObjData);

 
 #if wxUSE_OWNER_DRAWN
     if ( m_windowStyle & wxLB_OWNERDRAW )
     {
         // update item's text
 
 #if wxUSE_OWNER_DRAWN
     if ( m_windowStyle & wxLB_OWNERDRAW )
     {
         // update item's text

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

 
         // reassign the item's data
 
         // reassign the item's data

-        ListBox_SetItemData(GetHwnd(), N, m_aItems[N]);
+        ListBox_SetItemData(GetHwnd(), n, m_aItems[n]);

     }
 #endif  //USE_OWNER_DRAWN
 
     // we may have lost the selection
     if ( wasSelected )
     }
 #endif  //USE_OWNER_DRAWN
 
     // we may have lost the selection
     if ( wasSelected )

-        Select(N);
+        Select(n);

 
 

-    InvalidateBestSize();
+    SetHorizontalExtent();

 }
 
 }
 

-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.empty() )
-    {
-        int existingExtent = (int)SendMessage(GetHwnd(), LB_GETHORIZONTALEXTENT, 0, 0L);
-        HDC dc = GetWindowDC(GetHwnd());
-        HFONT oldFont = 0;
-        if (GetFont().Ok() && GetFont().GetResourceHandle() != 0)
-            oldFont = (HFONT) ::SelectObject(dc, (HFONT) GetFont().GetResourceHandle());
-
-        GetTextMetrics(dc, &lpTextMetric);
-        SIZE extentXY;
-        ::GetTextExtentPoint32(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
-    {
-        int largestExtent = 0;
-        HDC dc = GetWindowDC(GetHwnd());
-        HFONT oldFont = 0;
-        if (GetFont().Ok() && GetFont().GetResourceHandle() != 0)
-            oldFont = (HFONT) ::SelectObject(dc, (HFONT) GetFont().GetResourceHandle());
+    TEXTMETRIC lpTextMetric;
+    ::GetTextMetrics(dc, &lpTextMetric);

 
 

-        GetTextMetrics(dc, &lpTextMetric);
+    int largestExtent = 0;
+    SIZE extentXY;

 
 

-        for (int i = 0; i < m_noItems; i++)
+    if ( s.empty() )
+    {
+        // set extent to the max length of all strings
+        for ( unsigned int i = 0; i < m_noItems; i++ )

         {
         {

-            wxString str = GetString(i);
-            SIZE extentXY;
+            const wxString str = GetString(i);

             ::GetTextExtentPoint32(dc, str.c_str(), str.length(), &extentXY);
             ::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


@@ -681,7 +663,7 @@ 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);


@@ -746,7 +728,7 @@ bool wxListBox::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
         else if ( HasClientUntypedData() )
             event.SetClientData( GetClientData(n) );
 
         else if ( HasClientUntypedData() )
             event.SetClientData( GetClientData(n) );
 

-        event.SetString( GetString(n) );
+        event.SetString(GetString(n));

         event.SetExtraLong( HasMultipleSelection() ? IsSelected(n) : true );
     }
 
         event.SetExtraLong( HasMultipleSelection() ? IsSelected(n) : true );
     }