Don't hide/show wxActiveXContainer when resizing it.

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

diff --git a/src/msw/combobox.cpp b/src/msw/combobox.cpp
index 71e501dbcc4070b8b68357c12aa15e9bc0ee938f..c5a74dc211f2f993f8bd0a143ae044414e6c207e 100644 (file)
--- a/src/msw/combobox.cpp
+++ b/src/msw/combobox.cpp
@@ -1,337 +1,691 @@
 /////////////////////////////////////////////////////////////////////////////
 /////////////////////////////////////////////////////////////////////////////

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

 // Purpose:     wxComboBox class
 // Author:      Julian Smart
 // Modified by:
 // Created:     01/02/97
 // RCS-ID:      $Id$
 // Purpose:     wxComboBox class
 // Author:      Julian Smart
 // Modified by:
 // Created:     01/02/97
 // RCS-ID:      $Id$

-// Copyright:   (c) Julian Smart and Markus Holzem
+// Copyright:   (c) Julian Smart

 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 

-#ifdef __GNUG__
-#pragma implementation "combobox.h"
-#endif
+// ============================================================================
+// declarations
+// ============================================================================
+
+// ----------------------------------------------------------------------------
+// headers
+// ----------------------------------------------------------------------------

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

-#pragma hdrstop
+    #pragma hdrstop

 #endif
 
 #if wxUSE_COMBOBOX
 
 #endif
 
 #if wxUSE_COMBOBOX
 

+#include "wx/combobox.h"
+

 #ifndef WX_PRECOMP
 #ifndef WX_PRECOMP

-#include "wx/settings.h"
+    #include "wx/msw/wrapcctl.h" // include <commctrl.h> "properly"
+    #include "wx/settings.h"
+    #include "wx/log.h"
+    // for wxEVT_COMMAND_TEXT_ENTER
+    #include "wx/textctrl.h"
+    #include "wx/app.h"
+    #include "wx/brush.h"

 #endif
 
 #endif
 

-#include "wx/combobox.h"

 #include "wx/clipbrd.h"
 #include "wx/clipbrd.h"

+#include "wx/dynlib.h"
+#include "wx/wupdlock.h"

 #include "wx/msw/private.h"
 
 #include "wx/msw/private.h"
 

-#if !USE_SHARED_LIBRARY
-IMPLEMENT_DYNAMIC_CLASS(wxComboBox, wxControl)
+#if wxUSE_UXTHEME
+    #include "wx/msw/uxtheme.h"

 #endif
 
 #endif
 

-bool wxComboBox::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
+#if wxUSE_TOOLTIPS
+    #include "wx/tooltip.h"
+#endif // wxUSE_TOOLTIPS
+
+// ----------------------------------------------------------------------------
+// wxWin macros
+// ----------------------------------------------------------------------------
+
+BEGIN_EVENT_TABLE(wxComboBox, wxControl)
+    EVT_MENU(wxID_CUT, wxComboBox::OnCut)
+    EVT_MENU(wxID_COPY, wxComboBox::OnCopy)
+    EVT_MENU(wxID_PASTE, wxComboBox::OnPaste)
+    EVT_MENU(wxID_UNDO, wxComboBox::OnUndo)
+    EVT_MENU(wxID_REDO, wxComboBox::OnRedo)
+    EVT_MENU(wxID_CLEAR, wxComboBox::OnDelete)
+    EVT_MENU(wxID_SELECTALL, wxComboBox::OnSelectAll)
+
+    EVT_UPDATE_UI(wxID_CUT, wxComboBox::OnUpdateCut)
+    EVT_UPDATE_UI(wxID_COPY, wxComboBox::OnUpdateCopy)
+    EVT_UPDATE_UI(wxID_PASTE, wxComboBox::OnUpdatePaste)
+    EVT_UPDATE_UI(wxID_UNDO, wxComboBox::OnUpdateUndo)
+    EVT_UPDATE_UI(wxID_REDO, wxComboBox::OnUpdateRedo)
+    EVT_UPDATE_UI(wxID_CLEAR, wxComboBox::OnUpdateDelete)
+    EVT_UPDATE_UI(wxID_SELECTALL, wxComboBox::OnUpdateSelectAll)
+END_EVENT_TABLE()
+
+// ----------------------------------------------------------------------------
+// function prototypes
+// ----------------------------------------------------------------------------
+
+LRESULT APIENTRY _EXPORT wxComboEditWndProc(HWND hWnd,
+                                            UINT message,
+                                            WPARAM wParam,
+                                            LPARAM lParam);
+
+// ---------------------------------------------------------------------------
+// global vars
+// ---------------------------------------------------------------------------
+
+// the pointer to standard radio button wnd proc
+static WNDPROC gs_wndprocEdit = (WNDPROC)NULL;
+
+// ============================================================================
+// implementation
+// ============================================================================
+
+// ----------------------------------------------------------------------------
+// wnd proc for subclassed edit control
+// ----------------------------------------------------------------------------
+
+LRESULT APIENTRY _EXPORT wxComboEditWndProc(HWND hWnd,
+                                            UINT message,
+                                            WPARAM wParam,
+                                            LPARAM lParam)

 {
 {

-  if (param == CBN_SELCHANGE)
-  {
-    if (GetSelection() > -1)
+    HWND hwndCombo = ::GetParent(hWnd);
+    wxWindow *win = wxFindWinFromHandle((WXHWND)hwndCombo);
+
+    switch ( message )

     {
     {

-        wxCommandEvent event(wxEVT_COMMAND_COMBOBOX_SELECTED, m_windowId);
-        event.SetInt(GetSelection());
-        event.SetEventObject(this);
-        event.SetString(GetStringSelection());
-        ProcessCommand(event);
+        // forward some messages to the combobox to generate the appropriate
+        // wxEvents from them
+        case WM_KEYUP:
+        case WM_KEYDOWN:
+        case WM_CHAR:
+        case WM_SYSCHAR:
+        case WM_SYSKEYDOWN:
+        case WM_SYSKEYUP:
+        case WM_SETFOCUS:
+        case WM_KILLFOCUS:
+            {
+                wxComboBox *combo = wxDynamicCast(win, wxComboBox);
+                if ( !combo )
+                {
+                    // we can get WM_KILLFOCUS while our parent is already half
+                    // destroyed and hence doesn't look like a combobx any
+                    // longer, check for it to avoid bogus assert failures
+                    if ( !win->IsBeingDeleted() )
+                    {
+                        wxFAIL_MSG( wxT("should have combo as parent") );
+                    }
+                }
+                else if ( combo->MSWProcessEditMsg(message, wParam, lParam) )
+                {
+                    // handled by parent
+                    return 0;
+                }
+            }
+            break;
+
+        case WM_GETDLGCODE:
+            {
+                wxCHECK_MSG( win, 0, wxT("should have a parent") );
+
+                if ( win->GetWindowStyle() & wxTE_PROCESS_ENTER )
+                {
+                    // need to return a custom dlg code or we'll never get it
+                    return DLGC_WANTMESSAGE;
+                }
+            }
+            break;

     }
 
     }
 

-    return TRUE;
-  }
-  else if (param == CBN_EDITCHANGE)
-  {
-    wxCommandEvent event(wxEVT_COMMAND_TEXT_UPDATED, m_windowId);
-    event.SetString(GetValue());
-    event.SetEventObject(this);
-    ProcessCommand(event);
+    return ::CallWindowProc(CASTWNDPROC gs_wndprocEdit, hWnd, message, wParam, lParam);
+}
+
+// ----------------------------------------------------------------------------
+// wxComboBox callbacks
+// ----------------------------------------------------------------------------

 
 

-    return TRUE;
-  }
-  else
-      return FALSE;
+WXLRESULT wxComboBox::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
+{
+    // TODO: handle WM_CTLCOLOR messages from our EDIT control to be able to
+    //       set its colour correctly (to be the same as our own one)
+
+    switch ( nMsg )
+    {
+        case WM_SIZE:
+        // wxStaticBox can generate this message, when modifying the control's style.
+        // This causes the content of the combobox to be selected, for some reason.
+        case WM_STYLECHANGED:
+            {
+                // combobox selection sometimes spontaneously changes when its
+                // size changes, restore it to the old value if necessary
+                if ( !GetEditHWNDIfAvailable() )
+                    break;
+
+                long fromOld, toOld;
+                GetSelection(&fromOld, &toOld);
+
+                // if an editable combobox has a not empty text not from the
+                // list, it tries to autocomplete it from the list when it is
+                // resized, but we don't want this to happen as it doesn't seem
+                // to make any sense, so we forcefully restore the old text
+                wxString textOld;
+                if ( !HasFlag(wxCB_READONLY) && GetCurrentSelection() == -1 )
+                    textOld = GetValue();
+
+                // eliminate flickering during following hacks
+                wxWindowUpdateLocker lock(this);
+
+                WXLRESULT result = wxChoice::MSWWindowProc(nMsg, wParam, lParam);
+
+                if ( !textOld.empty() && GetValue() != textOld )
+                    SetLabel(textOld);
+
+                long fromNew, toNew;
+                GetSelection(&fromNew, &toNew);
+
+                if ( fromOld != fromNew || toOld != toNew )
+                {
+                    SetSelection(fromOld, toOld);
+                }
+
+                return result;
+            }
+    }
+
+    return wxChoice::MSWWindowProc(nMsg, wParam, lParam);

 }
 
 }
 

-bool wxComboBox::Create(wxWindow *parent, wxWindowID id,
-                        const wxString& value,
-                        const wxPoint& pos,
-                        const wxSize& size,
-                        int n, const wxString choices[],
-                        long style,
-                        const wxValidator& validator,
-                        const wxString& name)
+bool wxComboBox::MSWProcessEditMsg(WXUINT msg, WXWPARAM wParam, WXLPARAM lParam)

 {
 {

-  SetName(name);
-  SetValidator(validator);
-  if (parent) parent->AddChild(this);
-//  SetBackgroundColour(parent->GetBackgroundColour()) ;
+    switch ( msg )
+    {
+        case WM_CHAR:
+            // for compatibility with wxTextCtrl, generate a special message
+            // when Enter is pressed
+            if ( wParam == VK_RETURN )
+            {
+                if (SendMessage(GetHwnd(), CB_GETDROPPEDSTATE, 0, 0))
+                    return false;
+
+                wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
+
+                const int sel = GetSelection();
+                event.SetInt(sel);
+                event.SetString(GetValue());
+                InitCommandEventWithItems(event, sel);
+
+                if ( ProcessCommand(event) )
+                {
+                    // don't let the event through to the native control
+                    // because it doesn't need it and may generate an annoying
+                    // beep if it gets it
+                    return true;
+                }
+            }
+            // fall through
+
+        case WM_SYSCHAR:
+            return HandleChar(wParam, lParam);
+
+        case WM_SYSKEYDOWN:
+        case WM_KEYDOWN:
+            return HandleKeyDown(wParam, lParam);
+
+        case WM_SYSKEYUP:
+        case WM_KEYUP:
+            return HandleKeyUp(wParam, lParam);
+
+        case WM_SETFOCUS:
+            return HandleSetFocus((WXHWND)wParam);
+
+        case WM_KILLFOCUS:
+            return HandleKillFocus((WXHWND)wParam);
+
+        case WM_CUT:
+        case WM_COPY:
+        case WM_PASTE:
+            return HandleClipboardEvent(msg);
+    }

 
 

-  // A choice/combobox normally has a white background (or other, depending
-  // on global settings) rather than inheriting the parent's background colour.
-  SetBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_WINDOW));
+    return false;
+}

 
 

-  SetForegroundColour(parent->GetForegroundColour()) ;
+bool wxComboBox::MSWCommand(WXUINT param, WXWORD id)
+{
+    int sel = -1;
+    wxString value;

 
 

-  m_windowStyle = style;
+    switch ( param )
+    {
+        case CBN_DROPDOWN:
+            // remember the last selection, just as wxChoice does
+            m_lastAcceptedSelection = GetCurrentSelection();
+            if ( m_lastAcceptedSelection == -1 )
+            {
+                // but unlike with wxChoice we may have no selection but still
+                // have some text and we should avoid erasing it if the drop
+                // down is cancelled (see #8474)
+                m_lastAcceptedSelection = wxID_NONE;
+            }
+            {
+                wxCommandEvent event(wxEVT_COMMAND_COMBOBOX_DROPDOWN, GetId());
+                event.SetEventObject(this);
+                ProcessCommand(event);
+            }
+            break;
+        case CBN_CLOSEUP:
+            {
+                wxCommandEvent event(wxEVT_COMMAND_COMBOBOX_CLOSEUP, GetId());
+                event.SetEventObject(this);
+                ProcessCommand(event);
+            }
+            break;
+        case CBN_SELENDOK:
+#ifndef __SMARTPHONE__
+            // we need to reset this to prevent the selection from being undone
+            // by wxChoice, see wxChoice::MSWCommand() and comments there
+            m_lastAcceptedSelection = wxID_NONE;
+#endif

 
 

-  if ( id == -1 )
-    m_windowId = (int)NewControlId();
-  else
-    m_windowId = id;
+            // set these variables so that they could be also fixed in
+            // CBN_EDITCHANGE below
+            sel = GetSelection();
+            value = GetStringSelection();
+
+            // this string is going to become the new combobox value soon but
+            // we need it to be done right now, otherwise the event handler
+            // could get a wrong value when it calls our GetValue()
+            ::SetWindowText(GetHwnd(), value.wx_str());
+
+            {
+                wxCommandEvent event(wxEVT_COMMAND_COMBOBOX_SELECTED, GetId());
+                event.SetInt(sel);
+                event.SetString(value);
+                InitCommandEventWithItems(event, sel);
+
+                ProcessCommand(event);
+            }
+
+            // fall through: for compability with wxGTK, also send the text
+            // update event when the selection changes (this also seems more
+            // logical as the text does change)
+
+        case CBN_EDITCHANGE:
+            if ( m_allowTextEvents )
+            {
+                wxCommandEvent event(wxEVT_COMMAND_TEXT_UPDATED, GetId());
+
+                // if sel != -1, value was already initialized above
+                if ( sel == -1 )
+                {
+                    value = wxGetWindowText(GetHwnd());
+                }
+
+                event.SetString(value);
+                InitCommandEventWithItems(event, sel);
+
+                ProcessCommand(event);
+            }
+            break;
+
+        default:
+            return wxChoice::MSWCommand(param, id);
+    }

 
 

-  int x = pos.x;
-  int y = pos.y;
-  int width = size.x;
-  int height = size.y;
+    // skip wxChoice version as it would generate its own events for
+    // CBN_SELENDOK and also interfere with our handling of CBN_DROPDOWN
+    return true;
+}

 
 

-  long msStyle = WS_CHILD | WS_TABSTOP | WS_VISIBLE | WS_HSCROLL | WS_VSCROLL |
-      CBS_NOINTEGRALHEIGHT;
+bool wxComboBox::MSWShouldPreProcessMessage(WXMSG *pMsg)
+{
+    // prevent command accelerators from stealing editing
+    // hotkeys when we have the focus
+    if (wxIsCtrlDown())
+    {
+        WPARAM vkey = pMsg->wParam;
+
+        switch (vkey)
+        {
+            case 'C':
+            case 'V':
+            case 'X':
+            case VK_INSERT:
+            case VK_DELETE:
+            case VK_HOME:
+            case VK_END:
+                return false;
+        }
+    }
+
+    return wxChoice::MSWShouldPreProcessMessage(pMsg);
+}
+
+WXHWND wxComboBox::GetEditHWNDIfAvailable() const
+{
+#if wxUSE_DYNLIB_CLASS
+#if defined(WINVER) && WINVER >= 0x0500
+    typedef BOOL (WINAPI *GetComboBoxInfo_t)(HWND, COMBOBOXINFO*);
+    static GetComboBoxInfo_t s_pfnGetComboBoxInfo = NULL;
+    static bool s_triedToLoad = false;
+    if ( !s_triedToLoad )
+    {
+        s_triedToLoad = true;
+        wxLoadedDLL dllUser32("user32.dll");
+        wxDL_INIT_FUNC(s_pfn, GetComboBoxInfo, dllUser32);
+    }
+
+    if ( s_pfnGetComboBoxInfo )
+    {
+        WinStruct<COMBOBOXINFO> info;
+        (*s_pfnGetComboBoxInfo)(GetHwnd(), &info);
+        return info.hwndItem;
+    }
+#endif // WINVER >= 0x0500
+#endif // wxUSE_DYNLIB_CLASS
+
+    if (HasFlag(wxCB_SIMPLE))
+    {
+        POINT pt;
+        pt.x = pt.y = 4;
+        return (WXHWND) ::ChildWindowFromPoint(GetHwnd(), pt);
+    }
+
+    // notice that a slightly safer alternative could be to use FindWindowEx()
+    // but it's not available under WinCE so just take the first child for now
+    // to keep one version of the code for all platforms and fix it later if
+    // problems are discovered
+
+    // we assume that the only child of the combobox is the edit window
+    return (WXHWND)::GetWindow(GetHwnd(), GW_CHILD);
+}
+
+WXHWND wxComboBox::GetEditHWND() const
+{
+    // this function should not be called for wxCB_READONLY controls, it is
+    // the callers responsibility to check this
+    wxASSERT_MSG( !HasFlag(wxCB_READONLY),
+                  wxT("read-only combobox doesn't have any edit control") );
+
+    WXHWND hWndEdit = GetEditHWNDIfAvailable();
+    wxASSERT_MSG( hWndEdit, wxT("combobox without edit control?") );

 
 

-  if (m_windowStyle & wxCB_READONLY)
-    msStyle |= CBS_DROPDOWNLIST;
-  else if (m_windowStyle & wxCB_SIMPLE)
-    msStyle |= CBS_SIMPLE; // A list (shown always) and edit control
-  else
-    msStyle |= CBS_DROPDOWN;
+    return hWndEdit;
+}
+
+wxWindow *wxComboBox::GetEditableWindow()
+{
+    wxASSERT_MSG( !HasFlag(wxCB_READONLY),
+                  wxT("read-only combobox doesn't have any edit control") );

 
 

-  if (m_windowStyle & wxCB_SORT)
-    msStyle |= CBS_SORT;
+    return this;
+}

 
 

-  bool want3D;
-  WXDWORD exStyle = Determine3DEffects(WS_EX_CLIENTEDGE, &want3D) ;
+// ----------------------------------------------------------------------------
+// wxComboBox creation
+// ----------------------------------------------------------------------------
+
+bool wxComboBox::Create(wxWindow *parent, wxWindowID id,
+                        const wxString& value,
+                        const wxPoint& pos,
+                        const wxSize& size,
+                        int n, const wxString choices[],
+                        long style,
+                        const wxValidator& validator,
+                        const wxString& name)
+{
+    // pretend that wxComboBox is hidden while it is positioned and resized and
+    // show it only right before leaving this method because otherwise there is
+    // some noticeable flicker while the control rearranges itself
+    m_isShown = false;
+
+    if ( !CreateAndInit(parent, id, pos, size, n, choices, style,
+                        validator, name) )
+        return false;
+
+    // we shouldn't call SetValue() for an empty string because this would
+    // (correctly) result in an assert with a read only combobox and is useless
+    // for the other ones anyhow
+    if ( !value.empty() )
+        SetValue(value);
+
+    // a (not read only) combobox is, in fact, 2 controls: the combobox itself
+    // and an edit control inside it and if we want to catch events from this
+    // edit control, we must subclass it as well
+    if ( !(style & wxCB_READONLY) )
+    {
+        gs_wndprocEdit = wxSetWindowProc((HWND)GetEditHWND(), wxComboEditWndProc);
+    }

 
 

-  // Even with extended styles, need to combine with WS_BORDER
-  // for them to look right.
-  if ( want3D || wxStyleHasBorder(m_windowStyle) )
-    msStyle |= WS_BORDER;
+    // and finally, show the control
+    Show(true);

 
 

-  m_hWnd = (WXHWND)::CreateWindowEx(exStyle, wxT("COMBOBOX"), NULL,
-                   msStyle,
-                   0, 0, 0, 0, (HWND) parent->GetHWND(), (HMENU)m_windowId,
-                   wxGetInstance(), NULL);
+    return true;
+}

 
 

-  wxCHECK_MSG( m_hWnd, FALSE, wxT("Failed to create combobox") );
+bool wxComboBox::Create(wxWindow *parent, wxWindowID id,
+                        const wxString& value,
+                        const wxPoint& pos,
+                        const wxSize& size,
+                        const wxArrayString& choices,
+                        long style,
+                        const wxValidator& validator,
+                        const wxString& name)
+{
+    wxCArrayString chs(choices);
+    return Create(parent, id, value, pos, size, chs.GetCount(),
+                  chs.GetStrings(), style, validator, name);
+}

 
 

-/*
-#if wxUSE_CTL3D
-  if (want3D)
-  {
-    Ctl3dSubclassCtl(wx_combo);
-    m_useCtl3D = TRUE;
-  }
+WXDWORD wxComboBox::MSWGetStyle(long style, WXDWORD *exstyle) const
+{
+    // we never have an external border
+    WXDWORD msStyle = wxChoice::MSWGetStyle
+                      (
+                        (style & ~wxBORDER_MASK) | wxBORDER_NONE, exstyle
+                      );
+
+    // usually WS_TABSTOP is added by wxControl::MSWGetStyle() but as we're
+    // created hidden (see Create() above), it is not done for us but we still
+    // want to have this style
+    msStyle |= WS_TABSTOP;
+
+    // remove the style always added by wxChoice
+    msStyle &= ~CBS_DROPDOWNLIST;
+
+    if ( style & wxCB_READONLY )
+        msStyle |= CBS_DROPDOWNLIST;
+#ifndef __WXWINCE__
+    else if ( style & wxCB_SIMPLE )
+        msStyle |= CBS_SIMPLE; // A list (shown always) and edit control

 #endif
 #endif

-*/
+    else
+        msStyle |= CBS_DROPDOWN;

 
 

-  // Subclass again for purposes of dialog editing mode
-  SubclassWin(m_hWnd);
+    // there is no reason to not always use CBS_AUTOHSCROLL, so do use it
+    msStyle |= CBS_AUTOHSCROLL;

 
 

-  SetFont(parent->GetFont());
-  int i;
-  for (i = 0; i < n; i++)
-  {
-    Append(choices[i]);
-  }
+    // NB: we used to also add CBS_NOINTEGRALHEIGHT here but why?

 
 

-  SetSelection(i);
+    return msStyle;
+}

 
 

-  SetSize(x, y, width, height);
-  if ( !value.IsEmpty() )
-  {
-    SetValue(value);
-  }
+// ----------------------------------------------------------------------------
+// wxComboBox text control-like methods
+// ----------------------------------------------------------------------------

 
 

-  return TRUE;
+wxString wxComboBox::GetValue() const
+{
+    return HasFlag(wxCB_READONLY) ? GetStringSelection()
+                                  : wxTextEntry::GetValue();

 }
 
 void wxComboBox::SetValue(const wxString& value)
 {
 }
 
 void wxComboBox::SetValue(const wxString& value)
 {

-  // If newlines are denoted by just 10, must stick 13 in front.
-  int singletons = 0;
-  int len = value.Length();
-  int i;
-  for (i = 0; i < len; i ++)
-  {
-    if ((i > 0) && (value[i] == 10) && (value[i-1] != 13))
-      singletons ++;
-  }
-  if (singletons > 0)
-  {
-    wxChar *tmp = new wxChar[len + singletons + 1];
-    int j = 0;
-    for (i = 0; i < len; i ++)
+    if ( HasFlag(wxCB_READONLY) )
+        SetStringSelection(value);
+    else
+        wxTextEntry::SetValue(value);
+}
+
+void wxComboBox::Clear()
+{
+    wxChoice::Clear();
+    if ( !HasFlag(wxCB_READONLY) )
+        wxTextEntry::Clear();
+}
+
+void wxComboBox::GetSelection(long *from, long *to) const
+{
+    if ( !HasFlag(wxCB_READONLY) )

     {
     {

-      if ((i > 0) && (value[i] == 10) && (value[i-1] != 13))
-      {
-        tmp[j] = 13;
-        j ++;
-      }
-      tmp[j] = value[i];
-      j ++;
+        wxTextEntry::GetSelection(from, to);
+    }
+    else // text selection doesn't make sense for read only comboboxes
+    {
+        if ( from )
+            *from = -1;
+        if ( to )
+            *to = -1;

     }
     }

-    tmp[j] = 0;
-    SetWindowText(GetHwnd(), tmp);
-    delete[] tmp;
-  }
-  else
-    SetWindowText(GetHwnd(), value);

 }
 
 }
 

-// Clipboard operations
-void wxComboBox::Copy()
+bool wxComboBox::IsEditable() const

 {
 {

-  HWND hWnd = GetHwnd();
-  SendMessage(hWnd, WM_COPY, 0, 0L);
+    return !HasFlag(wxCB_READONLY) && wxTextEntry::IsEditable();

 }
 
 }
 

-void wxComboBox::Cut()
+// ----------------------------------------------------------------------------
+// standard event handling
+// ----------------------------------------------------------------------------
+
+void wxComboBox::OnCut(wxCommandEvent& WXUNUSED(event))

 {
 {

-  HWND hWnd = GetHwnd();
-  SendMessage(hWnd, WM_CUT, 0, 0L);
+    Cut();

 }
 
 }
 

-void wxComboBox::Paste()
+void wxComboBox::OnCopy(wxCommandEvent& WXUNUSED(event))

 {
 {

-  HWND hWnd = GetHwnd();
-  SendMessage(hWnd, WM_PASTE, 0, 0L);
+    Copy();

 }
 
 }
 

-void wxComboBox::SetEditable(bool editable)
+void wxComboBox::OnPaste(wxCommandEvent& WXUNUSED(event))

 {
 {

-  // Can't implement in MSW?
-//  HWND hWnd = GetHwnd();
-//  SendMessage(hWnd, EM_SETREADONLY, (WPARAM)!editable, (LPARAM)0L);
+    Paste();

 }
 
 }
 

-void wxComboBox::SetInsertionPoint(long pos)
+void wxComboBox::OnUndo(wxCommandEvent& WXUNUSED(event))

 {
 {

-/*
-  HWND hWnd = GetHwnd();
-#ifdef __WIN32__
-  SendMessage(hWnd, EM_SETSEL, pos, pos);
-  SendMessage(hWnd, EM_SCROLLCARET, (WPARAM)0, (LPARAM)0);
-#else
-  SendMessage(hWnd, EM_SETSEL, 0, MAKELPARAM(pos, pos));
-#endif
-  char *nothing = "";
-  SendMessage(hWnd, EM_REPLACESEL, 0, (LPARAM)nothing);
-*/
+    Undo();

 }
 
 }
 

-void wxComboBox::SetInsertionPointEnd()
+void wxComboBox::OnRedo(wxCommandEvent& WXUNUSED(event))

 {
 {

-/*
-  long pos = GetLastPosition();
-  SetInsertionPoint(pos);
-*/
+    Redo();

 }
 
 }
 

-long wxComboBox::GetInsertionPoint() const
+void wxComboBox::OnDelete(wxCommandEvent& WXUNUSED(event))

 {
 {

-/*
-  DWORD Pos=(DWORD)SendMessage(GetHwnd(), EM_GETSEL, 0, 0L);
-  return Pos&0xFFFF;
-*/
-  return 0;
+    RemoveSelection();

 }
 
 }
 

-long wxComboBox::GetLastPosition() const
+void wxComboBox::OnSelectAll(wxCommandEvent& WXUNUSED(event))

 {
 {

-/*
-    HWND hWnd = GetHwnd();
+    SelectAll();
+}

 
 

-    // Will always return a number > 0 (according to docs)
-    int noLines = (int)SendMessage(hWnd, EM_GETLINECOUNT, (WPARAM)0, (LPARAM)0L);
+void wxComboBox::OnUpdateCut(wxUpdateUIEvent& event)
+{
+    event.Enable( CanCut() );
+}

 
 

-    // This gets the char index for the _beginning_ of the last line
-    int charIndex = (int)SendMessage(hWnd, EM_LINEINDEX, (WPARAM)(noLines-1), (LPARAM)0L);
+void wxComboBox::OnUpdateCopy(wxUpdateUIEvent& event)
+{
+    event.Enable( CanCopy() );
+}

 
 

-    // Get number of characters in the last line. We'll add this to the character
-    // index for the last line, 1st position.
-    int lineLength = (int)SendMessage(hWnd, EM_LINELENGTH, (WPARAM)charIndex, (LPARAM)0L);
+void wxComboBox::OnUpdatePaste(wxUpdateUIEvent& event)
+{
+    event.Enable( CanPaste() );
+}

 
 

-    return (long)(charIndex + lineLength);
-*/
-  return 0;
+void wxComboBox::OnUpdateUndo(wxUpdateUIEvent& event)
+{
+    event.Enable( IsEditable() && CanUndo() );

 }
 
 }
 

-void wxComboBox::Replace(long from, long to, const wxString& value)
+void wxComboBox::OnUpdateRedo(wxUpdateUIEvent& event)

 {
 {

-#if wxUSE_CLIPBOARD
-    HWND hWnd = GetHwnd();
-    long fromChar = from;
-    long toChar = to;
+    event.Enable( IsEditable() && CanRedo() );
+}

 
 

-    // Set selection and remove it
-#ifdef __WIN32__
-    SendMessage(hWnd, CB_SETEDITSEL, fromChar, toChar);
-#else
-    SendMessage(hWnd, CB_SETEDITSEL, (WPARAM)0, (LPARAM)MAKELONG(fromChar, toChar));
-#endif
-    SendMessage(hWnd, WM_CUT, (WPARAM)0, (LPARAM)0);
+void wxComboBox::OnUpdateDelete(wxUpdateUIEvent& event)
+{
+    event.Enable(IsEditable() && HasSelection());
+}

 
 

-    // Now replace with 'value', by pasting.
-    wxSetClipboardData(wxDF_TEXT, (wxObject *)(const wxChar *)value, 0, 0);
+void wxComboBox::OnUpdateSelectAll(wxUpdateUIEvent& event)
+{
+    event.Enable(IsEditable() && !wxTextEntry::IsEmpty());
+}

 
 

-    // Paste into edit control
-    SendMessage(hWnd, WM_PASTE, (WPARAM)0, (LPARAM)0L);
-#endif
+void wxComboBox::MSWDoPopupOrDismiss(bool show)
+{
+    wxASSERT_MSG( !HasFlag(wxCB_SIMPLE),
+                  wxT("can't popup/dismiss the list for simple combo box") );
+
+    // we *must* set focus to the combobox before showing or hiding the drop
+    // down as without this we get WM_LBUTTONDOWN messages with invalid HWND
+    // when hiding it (whether programmatically or manually) resulting in a
+    // crash when we pass them to IsDialogMessage()
+    //
+    // this can be seen in the combo page of the widgets sample under Windows 7
+    SetFocus();
+
+    ::SendMessage(GetHwnd(), CB_SHOWDROPDOWN, show, 0);

 }
 
 }
 

-void wxComboBox::Remove(long from, long to)
+#if wxUSE_TOOLTIPS
+
+void wxComboBox::DoSetToolTip(wxToolTip *tip)

 {
 {

-    HWND hWnd = GetHwnd();
-    long fromChar = from;
-    long toChar = to;
+    wxChoice::DoSetToolTip(tip);

 
 

-    // Cut all selected text
-#ifdef __WIN32__
-    SendMessage(hWnd, CB_SETEDITSEL, fromChar, toChar);
-#else
-    SendMessage(hWnd, CB_SETEDITSEL, (WPARAM)0, (LPARAM)MAKELONG(fromChar, toChar));
-#endif
-    SendMessage(hWnd, WM_CUT, (WPARAM)0, (LPARAM)0);
+    if ( tip && !HasFlag(wxCB_READONLY) )
+        tip->Add(GetEditHWND());

 }
 
 }
 

-void wxComboBox::SetSelection(long from, long to)
+#endif // wxUSE_TOOLTIPS
+
+#if wxUSE_UXTHEME
+
+bool wxComboBox::SetHint(const wxString& hintOrig)

 {
 {

-    HWND hWnd = GetHwnd();
-    long fromChar = from;
-    long toChar = to;
-    // if from and to are both -1, it means
-    // (in wxWindows) that all text should be selected.
-    // This translates into Windows convention
-    if ((from == -1) && (to == -1))
+    wxString hint(hintOrig);
+    if ( wxUxThemeEngine::GetIfActive() )

     {
     {

-      fromChar = 0;
-      toChar = -1;
+        // under XP (but not Vista) there is a bug in cue banners
+        // implementation for combobox edit control: the first character is
+        // partially chopped off, so prepend a space to make it fully visible
+        hint.insert(0, " ");

     }
 
     }
 

-#ifdef __WIN32__
-    SendMessage(hWnd, CB_SETEDITSEL, (WPARAM)fromChar, (LPARAM)toChar);
-//    SendMessage(hWnd, EM_SCROLLCARET, (WPARAM)0, (LPARAM)0);
-#else
-    // WPARAM is 0: selection is scrolled into view
-    SendMessage(hWnd, CB_SETEDITSEL, (WPARAM)0, (LPARAM)MAKELONG(fromChar, toChar));
-#endif
+    return wxTextEntry::SetHint(hint);

 }
 
 }
 

-void wxComboBox::DoSetSize(int x, int y,
-                           int width, int height,
-                           int sizeFlags)
-{
-    wxControl::DoSetSize(x, y, width, height, sizeFlags);
-}
-
-#endif
- // wxUSE_COMBOBOX
+#endif // wxUSE_UXTHEME

 
 

+#endif // wxUSE_COMBOBOX