Added wxDataViewListIndexModel::RowsDeleted() and various related corrections

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

diff --git a/src/msw/choice.cpp b/src/msw/choice.cpp
index 6abcdaef9aa6822dfe8841f77ea869411f884a8f..9eec9c2332422433a5166bbbd315c221a5af77cb 100644 (file)
--- a/src/msw/choice.cpp
+++ b/src/msw/choice.cpp
@@ -1,5 +1,5 @@
 /////////////////////////////////////////////////////////////////////////////
 /////////////////////////////////////////////////////////////////////////////

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

 // Purpose:     wxChoice
 // Author:      Julian Smart
 // Modified by: Vadim Zeitlin to derive from wxChoiceBase
 // Purpose:     wxChoice
 // Author:      Julian Smart
 // Modified by: Vadim Zeitlin to derive from wxChoiceBase


@@ -17,10 +17,6 @@
 // headers
 // ----------------------------------------------------------------------------
 
 // headers
 // ----------------------------------------------------------------------------
 

-#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
-    #pragma implementation "choice.h"
-#endif
-

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


@@ -28,10 +24,11 @@
     #pragma hdrstop
 #endif
 
     #pragma hdrstop
 #endif
 

-#if wxUSE_CHOICE
+#if wxUSE_CHOICE && !(defined(__SMARTPHONE__) && defined(__WXWINCE__))
+
+#include "wx/choice.h"

 
 #ifndef WX_PRECOMP
 
 #ifndef WX_PRECOMP

-    #include "wx/choice.h"

     #include "wx/utils.h"
     #include "wx/log.h"
     #include "wx/brush.h"
     #include "wx/utils.h"
     #include "wx/log.h"
     #include "wx/brush.h"


@@ -73,7 +70,7 @@ wxBEGIN_FLAGS( wxChoiceStyle )
 
 wxEND_FLAGS( wxChoiceStyle )
 
 
 wxEND_FLAGS( wxChoiceStyle )
 

-IMPLEMENT_DYNAMIC_CLASS_XTI(wxChoice, wxControl,"wx/choice.h")
+IMPLEMENT_DYNAMIC_CLASS_XTI(wxChoice, wxControlWithItems,"wx/choice.h")

 
 wxBEGIN_PROPERTIES_TABLE(wxChoice)
     wxEVENT_PROPERTY( Select , wxEVT_COMMAND_CHOICE_SELECTED , wxCommandEvent )
 
 wxBEGIN_PROPERTIES_TABLE(wxChoice)
     wxEVENT_PROPERTY( Select , wxEVT_COMMAND_CHOICE_SELECTED , wxCommandEvent )


@@ -89,7 +86,7 @@ wxEND_HANDLERS_TABLE()
 
 wxCONSTRUCTOR_4( wxChoice , wxWindow* , Parent , wxWindowID , Id , wxPoint , Position , wxSize , Size )
 #else
 
 wxCONSTRUCTOR_4( wxChoice , wxWindow* , Parent , wxWindowID , Id , wxPoint , Position , wxSize , Size )
 #else

-IMPLEMENT_DYNAMIC_CLASS(wxChoice, wxControl)
+IMPLEMENT_DYNAMIC_CLASS(wxChoice, wxControlWithItems)

 #endif
 /*
     TODO PROPERTIES
 #endif
 /*
     TODO PROPERTIES


@@ -138,11 +135,11 @@ bool wxChoice::CreateAndInit(wxWindow *parent,
 {
     // initialize wxControl
     if ( !CreateControl(parent, id, pos, size, style, validator, name) )
 {
     // initialize wxControl
     if ( !CreateControl(parent, id, pos, size, style, validator, name) )

-        return FALSE;
+        return false;

 
     // now create the real HWND
 
     // now create the real HWND

-    if ( !MSWCreateControl(wxT("COMBOBOX"), _T(""), pos, size) )
-        return FALSE;
+    if ( !MSWCreateControl(wxT("COMBOBOX"), wxEmptyString, pos, size) )
+        return false;

 
 
     // choice/combobox normally has "white" (depends on colour scheme, of
 
 
     // choice/combobox normally has "white" (depends on colour scheme, of


@@ -156,9 +153,9 @@ bool wxChoice::CreateAndInit(wxWindow *parent,
     }
 
     // and now we may finally size the control properly (if needed)
     }
 
     // and now we may finally size the control properly (if needed)

-    SetBestSize(size);
+    SetInitialSize(size);

 
 

-    return TRUE;
+    return true;

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


@@ -214,81 +211,72 @@ WXDWORD wxChoice::MSWGetStyle(long style, WXDWORD *exstyle) const
 
 wxChoice::~wxChoice()
 {
 
 wxChoice::~wxChoice()
 {

-    Free();
+    Clear();

 }
 
 // ----------------------------------------------------------------------------
 // adding/deleting items to/from the list
 // ----------------------------------------------------------------------------
 
 }
 
 // ----------------------------------------------------------------------------
 // adding/deleting items to/from the list
 // ----------------------------------------------------------------------------
 

-int wxChoice::DoAppend(const wxString& item)
+int wxChoice::DoInsertItems(const wxArrayStringsAdapter& items,
+                            unsigned int pos,
+                            void **clientData, wxClientDataType type)

 {
 {

-    int n = (int)SendMessage(GetHwnd(), CB_ADDSTRING, 0, (LPARAM)item.c_str());
-    if ( n == CB_ERR )
-    {
-        wxLogLastError(wxT("SendMessage(CB_ADDSTRING)"));
-    }
-    else // ok
-    {
-        // we need to refresh our size in order to have enough space for the
-        // newly added items
-        UpdateVisibleHeight();
-    }
+    MSWAllocStorage(items, CB_INITSTORAGE);

 
 

-    return n;
-}
+    const bool append = pos == GetCount();

 
 

-int wxChoice::DoInsert(const wxString& item, int pos)
-{
-    wxCHECK_MSG(!(GetWindowStyle() & wxCB_SORT), -1, wxT("can't insert into sorted list"));
-    wxCHECK_MSG((pos>=0) && (pos<=GetCount()), -1, wxT("invalid index"));
+    // use CB_ADDSTRING when appending at the end to make sure the control is
+    // resorted if it has wxCB_SORT style
+    const unsigned msg = append ? CB_ADDSTRING : CB_INSERTSTRING;

 
 

-    int n = (int)SendMessage(GetHwnd(), CB_INSERTSTRING, pos, (LPARAM)item.c_str());
-    if ( n == CB_ERR )
+    if ( append )
+        pos = 0;
+
+    int n = wxNOT_FOUND;
+    const unsigned numItems = items.GetCount();
+    for ( unsigned i = 0; i < numItems; ++i )

     {
     {

-        wxLogLastError(wxT("SendMessage(CB_INSERTSTRING)"));
+        n = MSWInsertOrAppendItem(pos, items[i], msg);
+        if ( n == wxNOT_FOUND )
+            return n;
+
+        if ( !append )
+            pos++;
+
+        AssignNewItemClientData(n, clientData, i, type);

     }
     }

-    else // ok
-    {
+
+    // we need to refresh our size in order to have enough space for the
+    // newly added items
+    if ( !IsFrozen() )

         UpdateVisibleHeight();
         UpdateVisibleHeight();

-    }
+
+    InvalidateBestSize();

 
     return n;
 }
 
 
     return n;
 }
 

-void wxChoice::Delete(int n)
+void wxChoice::DoDeleteOneItem(unsigned int n)

 {
 {

-    wxCHECK_RET( n < GetCount(), wxT("invalid item index in wxChoice::Delete") );
-
-    if ( HasClientObjectData() )
-    {
-        delete GetClientObject(n);
-    }
+    wxCHECK_RET( IsValid(n), wxT("invalid item index in wxChoice::Delete") );

 
     SendMessage(GetHwnd(), CB_DELETESTRING, n, 0);
 
 
     SendMessage(GetHwnd(), CB_DELETESTRING, n, 0);
 

-    UpdateVisibleHeight();
+    if ( !IsFrozen() )
+        UpdateVisibleHeight();
+
+    InvalidateBestSize();

 }
 
 }
 

-void wxChoice::Clear()
+void wxChoice::DoClear()

 {
 {

-    Free();
-

     SendMessage(GetHwnd(), CB_RESETCONTENT, 0, 0);
 
     SendMessage(GetHwnd(), CB_RESETCONTENT, 0, 0);
 

-    UpdateVisibleHeight();
-}
+    if ( !IsFrozen() )
+        UpdateVisibleHeight();

 
 

-void wxChoice::Free()
-{
-    if ( HasClientObjectData() )
-    {
-        size_t count = GetCount();
-        for ( size_t n = 0; n < count; n++ )
-        {
-            delete GetClientObject(n);
-        }
-    }
+    InvalidateBestSize();

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


@@ -296,6 +284,17 @@ void wxChoice::Free()
 // ----------------------------------------------------------------------------
 
 int wxChoice::GetSelection() const
 // ----------------------------------------------------------------------------
 
 int wxChoice::GetSelection() const

+{
+    // if m_lastAcceptedSelection is set, it means that the dropdown is
+    // currently shown and that we want to use the last "permanent" selection
+    // instead of whatever is under the mouse pointer currently
+    //
+    // otherwise, get the selection from the control
+    return m_lastAcceptedSelection == wxID_NONE ? GetCurrentSelection()
+                                                : m_lastAcceptedSelection;
+}
+
+int wxChoice::GetCurrentSelection() const

 {
     return (int)SendMessage(GetHwnd(), CB_GETCURSEL, 0, 0);
 }
 {
     return (int)SendMessage(GetHwnd(), CB_GETCURSEL, 0, 0);
 }


@@ -309,63 +308,82 @@ void wxChoice::SetSelection(int n)
 // string list functions
 // ----------------------------------------------------------------------------
 
 // string list functions
 // ----------------------------------------------------------------------------
 

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

 {
 {

-    return (int)SendMessage(GetHwnd(), CB_GETCOUNT, 0, 0);
+    return (unsigned int)SendMessage(GetHwnd(), CB_GETCOUNT, 0, 0);

 }
 
 }
 

-int wxChoice::FindString(const wxString& s) const
+int wxChoice::FindString(const wxString& s, bool bCase) const

 {
 #if defined(__WATCOMC__) && defined(__WIN386__)
     // For some reason, Watcom in WIN386 mode crashes in the CB_FINDSTRINGEXACT message.
     // wxChoice::Do it the long way instead.
 {
 #if defined(__WATCOMC__) && defined(__WIN386__)
     // For some reason, Watcom in WIN386 mode crashes in the CB_FINDSTRINGEXACT message.
     // wxChoice::Do it the long way instead.

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

     {
         // as CB_FINDSTRINGEXACT is case insensitive, be case insensitive too
     {
         // as CB_FINDSTRINGEXACT is case insensitive, be case insensitive too

-        if ( GetString(i).IsSameAs(s, FALSE) )
+        if (GetString(i).IsSameAs(s, bCase))

             return i;
     }
 
     return wxNOT_FOUND;
 #else // !Watcom
             return i;
     }
 
     return wxNOT_FOUND;
 #else // !Watcom

-    int pos = (int)SendMessage(GetHwnd(), CB_FINDSTRINGEXACT,
-                               (WPARAM)-1, (LPARAM)s.c_str());
-
-    return pos == LB_ERR ? wxNOT_FOUND : pos;
+   //TODO:  Evidently some MSW versions (all?) don't like empty strings
+   //passed to SendMessage, so we have to do it ourselves in that case
+   if ( s.empty() )
+   {
+       unsigned int count = GetCount();
+       for ( unsigned int i = 0; i < count; i++ )
+       {
+         if (GetString(i).empty())
+             return i;
+       }
+
+       return wxNOT_FOUND;
+   }
+   else if (bCase)
+   {
+       // back to base class search for not native search type
+       return wxItemContainerImmutable::FindString( s, bCase );
+   }
+   else
+   {
+       int pos = (int)SendMessage(GetHwnd(), CB_FINDSTRINGEXACT,
+                                  (WPARAM)-1, (LPARAM)s.wx_str());
+
+       return pos == LB_ERR ? wxNOT_FOUND : pos;
+   }

 #endif // Watcom/!Watcom
 }
 
 #endif // Watcom/!Watcom
 }
 

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

 {
 {

-    wxCHECK_RET( n >= 0 && n < GetCount(),
-                 wxT("invalid item index in wxChoice::SetString") );
+    wxCHECK_RET( IsValid(n), wxT("invalid item index in wxChoice::SetString") );

 
     // we have to delete and add back the string as there is no way to change a
     // string in place
 
 
     // we have to delete and add back the string as there is no way to change a
     // string in place
 

-    // we need to preserve the client data
-    void *data;
-    if ( m_clientDataItemsType != wxClientData_None )
-    {
-        data = DoGetItemClientData(n);
-    }
-    else // no client data
-    {
-        data = NULL;
-    }
+    // we need to preserve the client data manually
+    void *oldData = NULL;
+    wxClientData *oldObjData = NULL;
+    if ( HasClientUntypedData() )
+        oldData = GetClientData(n);
+    else if ( HasClientObjectData() )
+        oldObjData = GetClientObject(n);

 
     ::SendMessage(GetHwnd(), CB_DELETESTRING, n, 0);
 
     ::SendMessage(GetHwnd(), CB_DELETESTRING, n, 0);

-    ::SendMessage(GetHwnd(), CB_INSERTSTRING, n, (LPARAM)s.c_str() );
+    ::SendMessage(GetHwnd(), CB_INSERTSTRING, n, (LPARAM)s.wx_str() );

 
 

-    if ( data )
-    {
-        DoSetItemClientData(n, data);
-    }
-    //else: it's already NULL by default
+    // restore the client data
+    if ( oldData )
+        SetClientData(n, oldData);
+    else if ( oldObjData )
+        SetClientObject(n, oldObjData);
+
+    InvalidateBestSize();

 }
 
 }
 

-wxString wxChoice::GetString(int n) const
+wxString wxChoice::GetString(unsigned int n) const

 {
     int len = (int)::SendMessage(GetHwnd(), CB_GETLBTEXTLEN, n, 0);
 
 {
     int len = (int)::SendMessage(GetHwnd(), CB_GETLBTEXTLEN, n, 0);
 


@@ -391,7 +409,7 @@ wxString wxChoice::GetString(int n) const
 // client data
 // ----------------------------------------------------------------------------
 
 // client data
 // ----------------------------------------------------------------------------
 

-void wxChoice::DoSetItemClientData( int n, void* clientData )
+void wxChoice::DoSetItemClientData(unsigned int n, void* clientData)

 {
     if ( ::SendMessage(GetHwnd(), CB_SETITEMDATA,
                        n, (LPARAM)clientData) == CB_ERR )
 {
     if ( ::SendMessage(GetHwnd(), CB_SETITEMDATA,
                        n, (LPARAM)clientData) == CB_ERR )


@@ -400,7 +418,7 @@ void wxChoice::DoSetItemClientData( int n, void* clientData )
     }
 }
 
     }
 }
 

-void* wxChoice::DoGetItemClientData( int n ) const
+void* wxChoice::DoGetItemClientData(unsigned int n) const

 {
     LPARAM rc = SendMessage(GetHwnd(), CB_GETITEMDATA, n, 0);
     if ( rc == CB_ERR )
 {
     LPARAM rc = SendMessage(GetHwnd(), CB_GETITEMDATA, n, 0);
     if ( rc == CB_ERR )


@@ -414,16 +432,6 @@ void* wxChoice::DoGetItemClientData( int n ) const
     return (void *)rc;
 }
 
     return (void *)rc;
 }
 

-void wxChoice::DoSetItemClientObject( int n, wxClientData* clientData )
-{
-    DoSetItemClientData(n, clientData);
-}
-
-wxClientData* wxChoice::DoGetItemClientObject( int n ) const
-{
-    return (wxClientData *)DoGetItemClientData(n);
-}
-

 // ----------------------------------------------------------------------------
 // wxMSW specific helpers
 // ----------------------------------------------------------------------------
 // ----------------------------------------------------------------------------
 // wxMSW specific helpers
 // ----------------------------------------------------------------------------


@@ -431,7 +439,7 @@ wxClientData* wxChoice::DoGetItemClientObject( int n ) const
 void wxChoice::UpdateVisibleHeight()
 {
     // be careful to not change the width here
 void wxChoice::UpdateVisibleHeight()
 {
     // be careful to not change the width here

-    DoSetSize(-1, -1, -1, GetSize().y, wxSIZE_USE_EXISTING);
+    DoSetSize(wxDefaultCoord, wxDefaultCoord, wxDefaultCoord, GetSize().y, wxSIZE_USE_EXISTING);

 }
 
 void wxChoice::DoMoveWindow(int x, int y, int width, int height)
 }
 
 void wxChoice::DoMoveWindow(int x, int y, int width, int height)


@@ -458,7 +466,7 @@ void wxChoice::DoGetSize(int *w, int *h) const
     // total height of the control including the drop down list -- but only
     // sometimes, and normally it isn't... I have no idea about what to do with
     // this
     // total height of the control including the drop down list -- but only
     // sometimes, and normally it isn't... I have no idea about what to do with
     // this

-    wxControl::DoGetSize(w, h);    
+    wxControl::DoGetSize(w, h);

 }
 
 void wxChoice::DoSetSize(int x, int y,
 }
 
 void wxChoice::DoSetSize(int x, int y,


@@ -470,42 +478,110 @@ void wxChoice::DoSetSize(int x, int y,
     // the height which we must pass to Windows should be the total height of
     // the control including the drop down list while the height given to us
     // is, of course, just the height of the permanently visible part of it
     // the height which we must pass to Windows should be the total height of
     // the control including the drop down list while the height given to us
     // is, of course, just the height of the permanently visible part of it

-    if ( height != -1 )
+    if ( height != wxDefaultCoord )

     {
         // don't make the drop down list too tall, arbitrarily limit it to 40
         // items max and also don't leave it empty
         size_t nItems = GetCount();
         if ( !nItems )
             nItems = 9;
     {
         // don't make the drop down list too tall, arbitrarily limit it to 40
         // items max and also don't leave it empty
         size_t nItems = GetCount();
         if ( !nItems )
             nItems = 9;

-        else if ( nItems > 39 )
-            nItems = 39;
+        else if ( nItems > 24 )
+            nItems = 24;

 
         // add space for the drop down list
         const int hItem = SendMessage(GetHwnd(), CB_GETITEMHEIGHT, 0, 0);
         height += hItem*(nItems + 1);
     }
 
         // add space for the drop down list
         const int hItem = SendMessage(GetHwnd(), CB_GETITEMHEIGHT, 0, 0);
         height += hItem*(nItems + 1);
     }

+    else
+    {
+        // We cannot pass wxDefaultCoord as height to wxControl. wxControl uses
+        // wxGetWindowRect() to determine the current height of the combobox,
+        // and then again sets the combobox's height to that value. Unfortunately,
+        // wxGetWindowRect doesn't include the dropdown list's height (at least
+        // on Win2K), so this would result in a combobox with dropdown height of
+        // 1 pixel. We have to determine the default height ourselves and call
+        // wxControl with that value instead.
+        int w, h;
+        RECT r;
+        DoGetSize(&w, &h);
+        if (::SendMessage(GetHwnd(), CB_GETDROPPEDCONTROLRECT, 0, (LPARAM) &r) != 0)
+        {
+            height = h + r.bottom - r.top;
+        }
+    }

 
     wxControl::DoSetSize(x, y, width, height, sizeFlags);
 
 
     wxControl::DoSetSize(x, y, width, height, sizeFlags);
 

-    // I'm commenting this out since the code appears to make choices
-    // and comboxes too high when they have associated sizers. I'm sure this
-    // is not the end of the story, which is why I'm leaving it #if'ed out for
-    // now. JACS.
+    // If we're storing a pending size, make sure we store
+    // the original size for reporting back to the app.
+    if (m_pendingSize != wxDefaultSize)
+        m_pendingSize = wxSize(width, heightOrig);
+
+    // This solution works on XP, but causes choice/combobox lists to be
+    // too short on W2K and earlier.

 #if 0
 #if 0

-    // if the height specified for the visible part of the control is
-    // different from the current one, we need to change it separately
-    // as it is not affected by normal WM_SETSIZE
-    if ( height != -1 )
+    int widthCurrent, heightCurrent;
+    DoGetSize(&widthCurrent, &heightCurrent);
+
+    // the height which we must pass to Windows should be the total height of
+    // the control including the drop down list while the height given to us
+    // is, of course, just the height of the permanently visible part of it
+    if ( height != wxDefaultCoord && height != heightCurrent )
+    {
+        // don't make the drop down list too tall, arbitrarily limit it to 40
+        // items max and also don't leave it empty
+        unsigned int nItems = GetCount();
+        if ( !nItems )
+            nItems = 9;
+        else if ( nItems > 24 )
+            nItems = 24;
+
+        // add space for the drop down list
+        const int hItem = SendMessage(GetHwnd(), CB_GETITEMHEIGHT, 0, 0);
+        height += hItem*(nItems + 1);
+    }
+    else // keep the same height as now

     {
     {

-        const int delta = heightOrig - GetSize().y;
-        if ( delta )
+        // normally wxWindow::DoSetSize() checks if we set the same size as the
+        // window already has and does nothing in this case, but for us the
+        // check fails as the size we pass to it includes the dropdown while
+        // the size returned by our GetSize() does not, so test if the size
+        // didn't really change ourselves here
+        if ( width == wxDefaultCoord || width == widthCurrent )

         {
         {

-            int h = ::SendMessage(GetHwnd(), CB_GETITEMHEIGHT, (WPARAM)-1, 0);
-            SendMessage(GetHwnd(), CB_SETITEMHEIGHT, (WPARAM)-1, h + delta);
+            // size doesn't change, what about position?
+            int xCurrent, yCurrent;
+            DoGetPosition(&xCurrent, &yCurrent);
+            const bool defMeansUnchanged = !(sizeFlags & wxSIZE_ALLOW_MINUS_ONE);
+            if ( ((x == wxDefaultCoord && defMeansUnchanged) || x == xCurrent)
+                    &&
+                 ((y == wxDefaultCoord && defMeansUnchanged) || y == yCurrent) )
+            {
+                // nothing changes, nothing to do
+                return;
+            }
+        }
+
+        // We cannot pass wxDefaultCoord as height to wxControl. wxControl uses
+        // wxGetWindowRect() to determine the current height of the combobox,
+        // and then again sets the combobox's height to that value. Unfortunately,
+        // wxGetWindowRect doesn't include the dropdown list's height (at least
+        // on Win2K), so this would result in a combobox with dropdown height of
+        // 1 pixel. We have to determine the default height ourselves and call
+        // wxControl with that value instead.
+        //
+        // Also notice that sometimes CB_GETDROPPEDCONTROLRECT seems to return
+        // wildly incorrect values (~32000) which looks like a bug in it, just
+        // ignore them in this case
+        RECT r;
+        if ( ::SendMessage(GetHwnd(), CB_GETDROPPEDCONTROLRECT, 0, (LPARAM) &r)
+                    && r.bottom < 30000 )
+        {
+            height = heightCurrent + r.bottom - r.top;

         }
     }
         }
     }

-#else
-    wxUnusedVar(heightOrig);
+
+    wxControl::DoSetSize(x, y, width, height, sizeFlags);

 #endif
 }
 
 #endif
 }
 


@@ -513,8 +589,8 @@ wxSize wxChoice::DoGetBestSize() const
 {
     // find the widest string
     int wChoice = 0;
 {
     // find the widest string
     int wChoice = 0;

-    const size_t nItems = GetCount();
-    for ( size_t i = 0; i < nItems; i++ )
+    const unsigned int nItems = GetCount();
+    for ( unsigned int i = 0; i < nItems; i++ )

     {
         int wLine;
         GetTextExtent(GetString(i), &wLine, NULL);
     {
         int wLine;
         GetTextExtent(GetString(i), &wLine, NULL);


@@ -530,23 +606,45 @@ wxSize wxChoice::DoGetBestSize() const
     // the combobox should be slightly larger than the widest string
     wChoice += 5*GetCharWidth();
 
     // the combobox should be slightly larger than the widest string
     wChoice += 5*GetCharWidth();
 

-    return wxSize(wChoice, EDIT_HEIGHT_FROM_CHAR_HEIGHT(GetCharHeight()));
+    wxSize best(wChoice, EDIT_HEIGHT_FROM_CHAR_HEIGHT(GetCharHeight()));
+    CacheBestSize(best);
+    return best;

 }
 
 WXLRESULT wxChoice::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
 {
 }
 
 WXLRESULT wxChoice::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
 {

-    if ( nMsg == WM_LBUTTONUP )
+    switch ( nMsg )

     {
     {

-        int x = (int)LOWORD(lParam);
-        int y = (int)HIWORD(lParam);
-
-        // Ok, this is truly weird, but if a panel with a wxChoice loses the
-        // focus, then you get a *fake* WM_LBUTTONUP message with x = 65535 and
-        // y = 65535. Filter out this nonsense.
-        //
-        // VZ: I'd like to know how to reproduce this please...
-        if ( x == 65535 && y == 65535 )
-            return 0;
+        case WM_LBUTTONUP:
+            {
+                int x = (int)LOWORD(lParam);
+                int y = (int)HIWORD(lParam);
+
+                // Ok, this is truly weird, but if a panel with a wxChoice
+                // loses the focus, then you get a *fake* WM_LBUTTONUP message
+                // with x = 65535 and y = 65535. Filter out this nonsense.
+                //
+                // VZ: I'd like to know how to reproduce this please...
+                if ( x == 65535 && y == 65535 )
+                    return 0;
+            }
+            break;
+
+            // we have to handle both: one for the normal case and the other
+            // for readonly
+        case WM_CTLCOLOREDIT:
+        case WM_CTLCOLORLISTBOX:
+        case WM_CTLCOLORSTATIC:
+            {
+                WXHDC hdc;
+                WXHWND hwnd;
+                UnpackCtlColor(wParam, lParam, &hdc, &hwnd);
+
+                WXHBRUSH hbr = MSWControlColor((WXHDC)hdc, hwnd);
+                if ( hbr )
+                    return (WXLRESULT)hbr;
+                //else: fall through to default window proc
+            }

     }
 
     return wxWindow::MSWWindowProc(nMsg, wParam, lParam);
     }
 
     return wxWindow::MSWWindowProc(nMsg, wParam, lParam);


@@ -554,47 +652,104 @@ WXLRESULT wxChoice::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
 
 bool wxChoice::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
 {
 
 bool wxChoice::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
 {

-    if ( param != CBN_SELCHANGE)
-    {
-        // "selection changed" is the only event we're after
-        return FALSE;
-    }
-
-    int n = GetSelection();
-    if (n > -1)
+    /*
+        The native control provides a great variety in the events it sends in
+        the different selection scenarios (undoubtedly for greater amusement of
+        the programmers using it). For the reference, here are the cases when
+        the final selection is accepted (things are quite interesting when it
+        is cancelled too):
+
+        A. Selecting with just the arrows without opening the dropdown:
+            1. CBN_SELENDOK
+            2. CBN_SELCHANGE
+
+        B. Opening dropdown with F4 and selecting with arrows:
+            1. CBN_DROPDOWN
+            2. many CBN_SELCHANGE while changing selection in the list
+            3. CBN_SELENDOK
+            4. CBN_CLOSEUP
+
+        C. Selecting with the mouse:
+            1. CBN_DROPDOWN
+            -- no intermediate CBN_SELCHANGEs --
+            2. CBN_SELENDOK
+            3. CBN_CLOSEUP
+            4. CBN_SELCHANGE
+
+        Admire the different order of messages in all of those cases, it must
+        surely have taken a lot of effort to Microsoft developers to achieve
+        such originality.
+     */
+    switch ( param )

     {
     {

-        wxCommandEvent event(wxEVT_COMMAND_CHOICE_SELECTED, m_windowId);
-        event.SetInt(n);
-        event.SetEventObject(this);
-        event.SetString(GetStringSelection());
-        if ( HasClientObjectData() )
-            event.SetClientObject( GetClientObject(n) );
-        else if ( HasClientUntypedData() )
-            event.SetClientData( GetClientData(n) );
-        ProcessCommand(event);
+        case CBN_DROPDOWN:
+            // we use this value both because we don't want to track selection
+            // using CB_GETCURSEL while the dropdown is opened and because we
+            // need to reset the selection back to it if it's eventually
+            // cancelled by user
+            m_lastAcceptedSelection = GetCurrentSelection();
+            if ( m_lastAcceptedSelection == -1 )
+            {
+                // no current selection so no need to restore it later (this
+                // happens when opening a combobox containing text not from its
+                // list of items and we shouldn't erase this text)
+                m_lastAcceptedSelection = wxID_NONE;
+            }
+            break;
+
+        case CBN_CLOSEUP:
+            // if the selection was accepted by the user, it should have been
+            // reset to wxID_NONE by CBN_SELENDOK, otherwise the selection was
+            // cancelled and we must restore the old one
+            if ( m_lastAcceptedSelection != wxID_NONE )
+            {
+                SetSelection(m_lastAcceptedSelection);
+                m_lastAcceptedSelection = wxID_NONE;
+            }
+            break;
+
+        case CBN_SELENDOK:
+            // reset it to prevent CBN_CLOSEUP from undoing the selection (it's
+            // ok to reset it now as GetCurrentSelection() will now return the
+            // same thing anyhow)
+            m_lastAcceptedSelection = wxID_NONE;
+
+            {
+                const int n = GetSelection();
+
+                wxCommandEvent event(wxEVT_COMMAND_CHOICE_SELECTED, m_windowId);
+                event.SetInt(n);
+                event.SetEventObject(this);
+
+                if ( n > -1 )
+                {
+                    event.SetString(GetStringSelection());
+                    InitCommandEventWithItems(event, n);
+                }
+
+                ProcessCommand(event);
+            }
+            break;
+
+        // don't handle CBN_SELENDCANCEL: just leave m_lastAcceptedSelection
+        // valid and the selection will be undone in CBN_CLOSEUP above
+
+        // don't handle CBN_SELCHANGE neither, we don't want to generate events
+        // while the dropdown is opened -- but do add it if we ever need this
+
+        default:
+            return false;

     }
 
     }
 

-    return TRUE;
+    return true;

 }
 
 }
 

-WXHBRUSH wxChoice::OnCtlColor(WXHDC pDC, WXHWND WXUNUSED(pWnd), WXUINT WXUNUSED(nCtlColor),
-                               WXUINT WXUNUSED(message),
-                               WXWPARAM WXUNUSED(wParam),
-                               WXLPARAM WXUNUSED(lParam)
-     )
+WXHBRUSH wxChoice::MSWControlColor(WXHDC hDC, WXHWND hWnd)

 {
 {

-    HDC hdc = (HDC)pDC;
-    wxColour colBack = GetBackgroundColour();
-
-    if (!IsEnabled())
-        colBack = wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE);
-
-    ::SetBkColor(hdc, wxColourToRGB(colBack));
-    ::SetTextColor(hdc, wxColourToRGB(GetForegroundColour()));
-
-    wxBrush *brush = wxTheBrushList->FindOrCreateBrush(colBack, wxSOLID);
+    if ( !IsEnabled() )
+        return MSWControlColorDisabled(hDC);

 
 

-    return (WXHBRUSH)brush->GetResourceHandle();
+    return wxChoiceBase::MSWControlColor(hDC, hWnd);

 }
 
 }
 

-#endif // wxUSE_CHOICE
+#endif // wxUSE_CHOICE && !(__SMARTPHONE__ && __WXWINCE__)