another segfault fix

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

diff --git a/src/msw/textctrl.cpp b/src/msw/textctrl.cpp
index f692d4857896d48cd2e3ca9c481bb98edbe37404..c64bfb06e8f1d7c37eb245124ef9614ae4a207ea 100644 (file)
--- a/src/msw/textctrl.cpp
+++ b/src/msw/textctrl.cpp
@@ -91,6 +91,20 @@
     } ENLINK;
 #endif // ENLINK
 
     } ENLINK;
 #endif // ENLINK
 

+#ifndef SF_UNICODE
+    #define SF_UNICODE 0x0010
+#endif
+
+// ----------------------------------------------------------------------------
+// private functions
+// ----------------------------------------------------------------------------
+
+#if wxUSE_RICHEDIT
+
+DWORD CALLBACK wxRichEditStreamIn(DWORD dwCookie, BYTE *buf, LONG cb, LONG *pcb);
+
+#endif // wxUSE_RICHEDIT
+

 // ----------------------------------------------------------------------------
 // private classes
 // ----------------------------------------------------------------------------
 // ----------------------------------------------------------------------------
 // private classes
 // ----------------------------------------------------------------------------


@@ -161,10 +175,10 @@ END_EVENT_TABLE()
 // creation
 // ----------------------------------------------------------------------------
 
 // creation
 // ----------------------------------------------------------------------------
 

-wxTextCtrl::wxTextCtrl()
+void wxTextCtrl::Init()

 {
 #if wxUSE_RICHEDIT
 {
 #if wxUSE_RICHEDIT

-    m_isRich = FALSE;
+    m_verRichEdit = 0;

 #endif
 }
 
 #endif
 }
 


@@ -185,7 +199,7 @@ bool wxTextCtrl::Create(wxWindow *parent, wxWindowID id,
 
     // translate wxWin style flags to MSW ones, checking for consistency while
     // doing it
 
     // translate wxWin style flags to MSW ones, checking for consistency while
     // doing it

-    long msStyle = ES_LEFT | WS_VISIBLE | WS_CHILD | WS_TABSTOP;
+    long msStyle = ES_LEFT | WS_TABSTOP;

 
     if ( m_windowStyle & wxCLIP_SIBLINGS )
         msStyle |= WS_CLIPSIBLINGS;
 
     if ( m_windowStyle & wxCLIP_SIBLINGS )
         msStyle |= WS_CLIPSIBLINGS;


@@ -200,21 +214,27 @@ bool wxTextCtrl::Create(wxWindow *parent, wxWindowID id,
             msStyle |= WS_VSCROLL;
         m_windowStyle |= wxTE_PROCESS_ENTER;
     }
             msStyle |= WS_VSCROLL;
         m_windowStyle |= wxTE_PROCESS_ENTER;
     }

-    else
+    else // !multiline
+    {
+        // there is really no reason to not have this style for single line
+        // text controls

         msStyle |= ES_AUTOHSCROLL;
         msStyle |= ES_AUTOHSCROLL;

+    }

 
 

-    if (m_windowStyle & wxHSCROLL)
-        msStyle |= (WS_HSCROLL | ES_AUTOHSCROLL);
+    if ( m_windowStyle & wxHSCROLL )
+        msStyle |= WS_HSCROLL | ES_AUTOHSCROLL;

 
 

-    if (m_windowStyle & wxTE_READONLY)
+    if ( m_windowStyle & wxTE_READONLY )

         msStyle |= ES_READONLY;
 
         msStyle |= ES_READONLY;
 

-    if (m_windowStyle & wxTE_PASSWORD) // hidden input
+    if ( m_windowStyle & wxTE_PASSWORD )

         msStyle |= ES_PASSWORD;
 
         msStyle |= ES_PASSWORD;
 

-   if (m_windowStyle & wxTE_AUTO_SCROLL)
-        msStyle |=  ES_AUTOHSCROLL;
+    if ( m_windowStyle & wxTE_AUTO_SCROLL )
+        msStyle |= ES_AUTOHSCROLL;

 
 

+    if ( m_windowStyle & wxTE_NOHIDESEL )
+        msStyle |= ES_NOHIDESEL;

 
     // we always want the characters and the arrows
     m_lDlgCode = DLGC_WANTCHARS | DLGC_WANTARROWS;
 
     // we always want the characters and the arrows
     m_lDlgCode = DLGC_WANTCHARS | DLGC_WANTARROWS;


@@ -252,17 +272,12 @@ bool wxTextCtrl::Create(wxWindow *parent, wxWindowID id,
             }
         }
 
             }
         }
 

-        if ( s_errorGiven )
-        {
-            m_isRich = FALSE;
-        }
-        else
+        if ( !s_errorGiven )

         {
             msStyle |= ES_AUTOVSCROLL;
         {
             msStyle |= ES_AUTOVSCROLL;

-            m_isRich = TRUE;

 
 

-            int ver = wxRichEditModule::GetLoadedVersion();
-            if ( ver == 1 )
+            m_verRichEdit = wxRichEditModule::GetLoadedVersion();
+            if ( m_verRichEdit == 1 )

             {
                 windowClass = wxT("RICHEDIT");
             }
             {
                 windowClass = wxT("RICHEDIT");
             }


@@ -270,7 +285,7 @@ bool wxTextCtrl::Create(wxWindow *parent, wxWindowID id,
             {
 #ifndef RICHEDIT_CLASS
                 wxString RICHEDIT_CLASS;
             {
 #ifndef RICHEDIT_CLASS
                 wxString RICHEDIT_CLASS;

-                RICHEDIT_CLASS.Printf(_T("RichEdit%d0"), ver);
+                RICHEDIT_CLASS.Printf(_T("RichEdit%d0"), m_verRichEdit);

 #if wxUSE_UNICODE
                 RICHEDIT_CLASS += _T('W');
 #else // ANSI
 #if wxUSE_UNICODE
                 RICHEDIT_CLASS += _T('W');
 #else // ANSI


@@ -282,43 +297,26 @@ bool wxTextCtrl::Create(wxWindow *parent, wxWindowID id,
             }
         }
     }
             }
         }
     }

-    else
-        m_isRich = FALSE;

 #endif // wxUSE_RICHEDIT
 
 #endif // wxUSE_RICHEDIT
 

-    bool want3D;
-    WXDWORD exStyle = Determine3DEffects(WS_EX_CLIENTEDGE, &want3D);
-
-    // Even with extended styles, need to combine with WS_BORDER for them to
-    // look right.
-    if ( want3D || wxStyleHasBorder(m_windowStyle) )
-        msStyle |= WS_BORDER;
-
-    // NB: don't use pos and size as CreateWindowEx arguments because they
-    //     might be -1 in which case we should use the default values (and
-    //     SetSize called below takes care of it)
-    m_hWnd = (WXHWND)::CreateWindowEx(exStyle,
-                                      windowClass.c_str(),
-                                      NULL,
-                                      msStyle,
-                                      0, 0, 0, 0,
-                                      GetHwndOf(parent),
-                                      (HMENU)m_windowId,
-                                      wxGetInstance(),
-                                      NULL);
-
-    wxCHECK_MSG( m_hWnd, FALSE, wxT("Failed to create text ctrl") );
-
-#if wxUSE_CTL3D
-    if ( want3D )
+    // we need to turn '\n's into "\r\n"s for the multiline controls
+    wxString valueWin;
+    if ( m_windowStyle & wxTE_MULTILINE )

     {
     {

-        Ctl3dSubclassCtl(GetHwnd());
-        m_useCtl3D = TRUE;
+        valueWin = wxTextFile::Translate(value, wxTextFileType_Dos);

     }
     }

-#endif
+    else // single line
+    {
+        valueWin = value;
+    }
+
+    if ( !MSWCreateControl(windowClass, msStyle, pos, size, valueWin) )
+        return FALSE;
+
+    SetBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_WINDOW));

 
 #if wxUSE_RICHEDIT
 
 #if wxUSE_RICHEDIT

-    if (m_isRich)
+    if ( IsRich() )

     {
         // have to enable events manually
         LPARAM mask = ENM_CHANGE | ENM_DROPFILES | ENM_SELCHANGE | ENM_UPDATE;
     {
         // have to enable events manually
         LPARAM mask = ENM_CHANGE | ENM_DROPFILES | ENM_SELCHANGE | ENM_UPDATE;


@@ -334,75 +332,45 @@ bool wxTextCtrl::Create(wxWindow *parent, wxWindowID id,
     }
 #endif // wxUSE_RICHEDIT
 
     }
 #endif // wxUSE_RICHEDIT
 

-    SubclassWin(GetHWND());
-
-    // set font, position, size and initial value
-    wxFont& fontParent = parent->GetFont();
-    if ( fontParent.Ok() )
-    {
-        SetFont(fontParent);
-    }
-    else
-    {
-        SetFont(wxSystemSettings::GetSystemFont(wxSYS_SYSTEM_FONT));
-    }
-
-    // Causes a crash for Symantec C++ and WIN32 for some reason
-#if !(defined(__SC__) && defined(__WIN32__))
-    if ( !value.IsEmpty() )
-    {
-        SetValue(value);
-    }
-#endif
-
-    // set colours
-    SetupColours();
-
-    SetSize(pos.x, pos.y, size.x, size.y);
-

     return TRUE;
 }
 
 // Make sure the window style (etc.) reflects the HWND style (roughly)
 void wxTextCtrl::AdoptAttributesFromHWND()
 {
     return TRUE;
 }
 
 // Make sure the window style (etc.) reflects the HWND style (roughly)
 void wxTextCtrl::AdoptAttributesFromHWND()
 {

-  wxWindow::AdoptAttributesFromHWND();
+    wxWindow::AdoptAttributesFromHWND();

 
 

-  HWND hWnd = GetHwnd();
-  long style = GetWindowLong(hWnd, GWL_STYLE);
+    HWND hWnd = GetHwnd();
+    long style = ::GetWindowLong(hWnd, GWL_STYLE);

 
 

-  // retrieve the style to see whether this is an edit or richedit ctrl
+    // retrieve the style to see whether this is an edit or richedit ctrl

 #if wxUSE_RICHEDIT
 #if wxUSE_RICHEDIT

-  wxChar buf[256];
+    wxString classname = wxGetWindowClass(GetHWND());

 
 

-  GetClassName(hWnd, buf, WXSIZEOF(buf));
+    if ( classname.IsSameAs(_T("EDIT"), FALSE /* no case */) )
+    {
+        m_verRichEdit = 0;
+    }
+    else // rich edit?
+    {
+        wxChar c;
+        if ( wxSscanf(classname, _T("RichEdit%d0%c"), &m_verRichEdit, &c) != 2 )
+        {
+            wxLogDebug(_T("Unknown edit control '%s'."), classname.c_str());

 
 

-  if ( wxStricmp(buf, wxT("EDIT")) == 0 )
-    m_isRich = FALSE;
-  else
-    m_isRich = TRUE;
+            m_verRichEdit = 0;
+        }
+    }

 #endif // wxUSE_RICHEDIT
 
 #endif // wxUSE_RICHEDIT
 

-  if (style & ES_MULTILINE)
-    m_windowStyle |= wxTE_MULTILINE;
-  if (style & ES_PASSWORD)
-    m_windowStyle |= wxTE_PASSWORD;
-  if (style & ES_READONLY)
-    m_windowStyle |= wxTE_READONLY;
-  if (style & ES_WANTRETURN)
-    m_windowStyle |= wxTE_PROCESS_ENTER;
-}
-
-void wxTextCtrl::SetupColours()
-{
-    wxColour bkgndColour;
-//    if (IsEditable() || (m_windowStyle & wxTE_MULTILINE))
-        bkgndColour = wxSystemSettings::GetSystemColour(wxSYS_COLOUR_WINDOW);
-//    else
-//        bkgndColour = wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DFACE);
-
-    SetBackgroundColour(bkgndColour);
-    SetForegroundColour(GetParent()->GetForegroundColour());
+    if (style & ES_MULTILINE)
+        m_windowStyle |= wxTE_MULTILINE;
+    if (style & ES_PASSWORD)
+        m_windowStyle |= wxTE_PASSWORD;
+    if (style & ES_READONLY)
+        m_windowStyle |= wxTE_READONLY;
+    if (style & ES_WANTRETURN)
+        m_windowStyle |= wxTE_PROCESS_ENTER;

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


@@ -414,7 +382,7 @@ wxString wxTextCtrl::GetValue() const
     // we can't use wxGetWindowText() (i.e. WM_GETTEXT internally) for
     // retrieving more than 64Kb under Win9x
 #if wxUSE_RICHEDIT
     // we can't use wxGetWindowText() (i.e. WM_GETTEXT internally) for
     // retrieving more than 64Kb under Win9x
 #if wxUSE_RICHEDIT

-    if ( m_isRich )
+    if ( IsRich() )

     {
         wxString str;
 
     {
         wxString str;
 


@@ -464,38 +432,131 @@ void wxTextCtrl::SetValue(const wxString& value)
     // edit controls mostly)
     if ( (value.length() > 0x400) || (value != GetValue()) )
     {
     // edit controls mostly)
     if ( (value.length() > 0x400) || (value != GetValue()) )
     {

-        wxString valueDos = wxTextFile::Translate(value, wxTextFileType_Dos);
+        // it is simpler to do this but it could be more efficient to reproduce
+        // WriteText() logic here
+        Clear();

 
 

-        SetWindowText(GetHwnd(), valueDos.c_str());
+        WriteText(value);

 
 

-        // for compatibility with the GTK and because it is more logical, we
-        // move the cursor to the end of the text after SetValue()
+        // for compatibility, don't move the cursor when doing SetValue()
+        SetInsertionPoint(0);
+    }
+}

 
 

-        // GRG, Jun/2000: Changed this back after a lot of discussion
-        //   in the lists. wxWindows 2.2 will have a set of flags to
-        //   customize this behaviour.
-        //SetInsertionPointEnd();
+#if wxUSE_RICHEDIT

 
 

-        AdjustSpaceLimit();
+DWORD CALLBACK wxRichEditStreamIn(DWORD dwCookie, BYTE *buf, LONG cb, LONG *pcb)
+{
+    *pcb = 0;
+
+    wchar_t *wbuf = (wchar_t *)buf;
+    const wchar_t *wpc = *(const wchar_t **)dwCookie;
+    while ( cb && *wpc )
+    {
+        *wbuf++ = *wpc++;
+
+        cb -= sizeof(wchar_t);
+        (*pcb) += sizeof(wchar_t);
+    }
+
+    *(const wchar_t **)dwCookie = wpc;
+
+    return 0;
+}
+
+extern long wxEncodingToCodepage(wxFontEncoding encoding); // from strconv.cpp
+
+bool wxTextCtrl::StreamIn(const wxString& value, wxFontEncoding encoding)
+{
+#if !wxUSE_UNICODE
+    // we have to use EM_STREAMIN to force richedit control 2.0+ to show any
+    // text in the non default charset - otherwise it thinks it knows better
+    // than we do and always shows it in the default one
+
+    // first get the Windows code page for this encoding
+    long codepage = wxEncodingToCodepage(encoding);
+    if ( codepage == -1 )
+    {
+        // unknown encoding
+        return FALSE;
+    }
+
+    // next translate to Unicode using this code page
+    int len = ::MultiByteToWideChar(codepage, 0, value, -1, NULL, 0);
+    wxWCharBuffer wchBuf(len);
+    if ( !::MultiByteToWideChar(codepage, 0, value, -1,
+                                (wchar_t *)wchBuf.data(), len) )
+    {
+        wxLogLastError(_T("MultiByteToWideChar"));

     }
     }

+
+    // finally, stream it in the control
+    const wchar_t *wpc = wchBuf;
+#else
+    const wchar_t *wpc = value.c_str();
+#endif
+
+    EDITSTREAM eds;
+    wxZeroMemory(eds);
+    eds.dwCookie = (DWORD)&wpc;
+    // the cast below is needed for broken (very) old mingw32 headers
+    eds.pfnCallback = (EDITSTREAMCALLBACK)wxRichEditStreamIn;
+
+    if ( !::SendMessage(GetHwnd(), EM_STREAMIN,
+                        SF_TEXT | SF_UNICODE | SFF_SELECTION,
+                        (LPARAM)&eds) || eds.dwError )
+    {
+        wxLogLastError(_T("EM_STREAMIN"));
+
+        return FALSE;
+    }
+
+    return TRUE;

 }
 
 }
 

+#endif // wxUSE_RICHEDIT
+

 void wxTextCtrl::WriteText(const wxString& value)
 {
     wxString valueDos = wxTextFile::Translate(value, wxTextFileType_Dos);
 
 #if wxUSE_RICHEDIT
 void wxTextCtrl::WriteText(const wxString& value)
 {
     wxString valueDos = wxTextFile::Translate(value, wxTextFileType_Dos);
 
 #if wxUSE_RICHEDIT

-    // ensure that the new text will be in the default style
-    if ( IsRich() &&
-            (m_defaultStyle.HasFont() || m_defaultStyle.HasTextColour()) )
+    // there are several complications with the rich edit controls here
+    bool done = FALSE;
+    if ( IsRich() )

     {
     {

-        long start, end;
-        GetSelection(&start, &end);
-        SetStyle(start, end, m_defaultStyle );
+        // first, ensure that the new text will be in the default style
+        if ( !m_defaultStyle.IsDefault() )
+        {
+            long start, end;
+            GetSelection(&start, &end);
+            SetStyle(start, end, m_defaultStyle );
+        }
+
+        // next check if the text we're inserting must be shown in a non
+        // default charset -- this only works for RichEdit > 1.0
+        if ( GetRichVersion() > 1 )
+        {
+            wxFont font = m_defaultStyle.GetFont();
+            if ( !font.Ok() )
+                font = GetFont();
+
+            if ( font.Ok() )
+            {
+               wxFontEncoding encoding = font.GetEncoding();
+               if ( encoding != wxFONTENCODING_SYSTEM )
+               {
+                   done = StreamIn(valueDos, encoding);
+               }
+            }
+        }

     }
     }

-#endif // wxUSE_RICHEDIT

 
 

-    SendMessage(GetHwnd(), EM_REPLACESEL, 0, (LPARAM)valueDos.c_str());
+    if ( !done )
+#endif // wxUSE_RICHEDIT
+    {
+        ::SendMessage(GetHwnd(), EM_REPLACESEL, 0, (LPARAM)valueDos.c_str());
+    }

 
     AdjustSpaceLimit();
 }
 
     AdjustSpaceLimit();
 }


@@ -503,12 +564,13 @@ void wxTextCtrl::WriteText(const wxString& value)
 void wxTextCtrl::AppendText(const wxString& text)
 {
     SetInsertionPointEnd();
 void wxTextCtrl::AppendText(const wxString& text)
 {
     SetInsertionPointEnd();

+

     WriteText(text);
 }
 
 void wxTextCtrl::Clear()
 {
     WriteText(text);
 }
 
 void wxTextCtrl::Clear()
 {

-    SetWindowText(GetHwnd(), wxT(""));
+    ::SetWindowText(GetHwnd(), wxT(""));

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


@@ -560,23 +622,24 @@ bool wxTextCtrl::CanCut() const
 
 bool wxTextCtrl::CanPaste() const
 {
 
 bool wxTextCtrl::CanPaste() const
 {

+    if ( !IsEditable() )
+        return FALSE;
+

 #if wxUSE_RICHEDIT
 #if wxUSE_RICHEDIT

-    if (m_isRich)
+    if ( IsRich() )

     {
     {

-        int dataFormat = 0; // 0 == any format
-        return (::SendMessage( GetHwnd(), EM_CANPASTE, (WPARAM) (UINT) dataFormat, 0) != 0);
+        UINT cf = 0; // 0 == any format
+
+        return ::SendMessage(GetHwnd(), EM_CANPASTE, cf, 0) != 0;

     }
     }

-#endif
-    if (!IsEditable())
-        return FALSE;
+#endif // wxUSE_RICHEDIT

 
     // Standard edit control: check for straight text on clipboard
 
     // Standard edit control: check for straight text on clipboard

-    bool isTextAvailable = FALSE;
-    if ( ::OpenClipboard(GetHwndOf(wxTheApp->GetTopWindow())) )
-    {
-        isTextAvailable = (::IsClipboardFormatAvailable(CF_TEXT) != 0);
-        ::CloseClipboard();
-    }
+    if ( !::OpenClipboard(GetHwndOf(wxTheApp->GetTopWindow())) )
+        return FALSE;
+
+    bool isTextAvailable = ::IsClipboardFormatAvailable(CF_TEXT) != 0;
+    ::CloseClipboard();

 
     return isTextAvailable;
 }
 
     return isTextAvailable;
 }


@@ -593,29 +656,15 @@ void wxTextCtrl::SetEditable(bool editable)
 
 void wxTextCtrl::SetInsertionPoint(long pos)
 {
 
 void wxTextCtrl::SetInsertionPoint(long pos)
 {

-    HWND hWnd = GetHwnd();
-#ifdef __WIN32__
+    SetSelection(pos, pos);
+

 #if wxUSE_RICHEDIT
 #if wxUSE_RICHEDIT

-    if ( m_isRich)
-    {
-        CHARRANGE range;
-        range.cpMin = pos;
-        range.cpMax = pos;
-        SendMessage(hWnd, EM_EXSETSEL, 0, (LPARAM) &range);
-        SendMessage(hWnd, EM_SCROLLCARET, (WPARAM)0, (LPARAM)0);
-    }
-    else
-#endif // wxUSE_RICHEDIT
+    if ( !IsRich() )
+#endif

     {
     {

-        SendMessage(hWnd, EM_SETSEL, pos, pos);
-        SendMessage(hWnd, EM_SCROLLCARET, (WPARAM)0, (LPARAM)0);
+        static const wxChar *nothing = _T("");
+        SendMessage(GetHwnd(), EM_REPLACESEL, 0, (LPARAM)nothing);

     }
     }

-#else // Win16
-    SendMessage(hWnd, EM_SETSEL, 0, MAKELPARAM(pos, pos));
-#endif // Win32/16
-
-    static const wxChar *nothing = _T("");
-    SendMessage(hWnd, EM_REPLACESEL, 0, (LPARAM)nothing);

 }
 
 void wxTextCtrl::SetInsertionPointEnd()
 }
 
 void wxTextCtrl::SetInsertionPointEnd()


@@ -627,7 +676,7 @@ void wxTextCtrl::SetInsertionPointEnd()
 long wxTextCtrl::GetInsertionPoint() const
 {
 #if wxUSE_RICHEDIT
 long wxTextCtrl::GetInsertionPoint() const
 {
 #if wxUSE_RICHEDIT

-    if (m_isRich)
+    if ( IsRich() )

     {
         CHARRANGE range;
         range.cpMin = 0;
     {
         CHARRANGE range;
         range.cpMin = 0;


@@ -635,7 +684,7 @@ long wxTextCtrl::GetInsertionPoint() const
         SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &range);
         return range.cpMin;
     }
         SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &range);
         return range.cpMin;
     }

-#endif
+#endif // wxUSE_RICHEDIT

 
     DWORD Pos = (DWORD)SendMessage(GetHwnd(), EM_GETSEL, 0, 0L);
     return Pos & 0xFFFF;
 
     DWORD Pos = (DWORD)SendMessage(GetHwnd(), EM_GETSEL, 0, 0L);
     return Pos & 0xFFFF;


@@ -663,28 +712,53 @@ long wxTextCtrl::GetLastPosition() const
 void wxTextCtrl::GetSelection(long* from, long* to) const
 {
 #if wxUSE_RICHEDIT
 void wxTextCtrl::GetSelection(long* from, long* to) const
 {
 #if wxUSE_RICHEDIT

-    if (m_isRich)
+    if ( IsRich() )

     {
         CHARRANGE charRange;
     {
         CHARRANGE charRange;

-        ::SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) (CHARRANGE*) & charRange);
+        ::SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &charRange);

 
         *from = charRange.cpMin;
         *to = charRange.cpMax;
     }
     else
 
         *from = charRange.cpMin;
         *to = charRange.cpMax;
     }
     else

-#endif // rich/!rich
+#endif // !wxUSE_RICHEDIT

     {
         DWORD dwStart, dwEnd;
     {
         DWORD dwStart, dwEnd;

-        WPARAM wParam = (WPARAM) &dwStart; // receives starting position
-        LPARAM lParam = (LPARAM) &dwEnd;   // receives ending position
-
-        ::SendMessage(GetHwnd(), EM_GETSEL, wParam, lParam);
+        ::SendMessage(GetHwnd(), EM_GETSEL, (WPARAM)&dwStart, (LPARAM)&dwEnd);

 
         *from = dwStart;
         *to = dwEnd;
     }
 }
 
 
         *from = dwStart;
         *to = dwEnd;
     }
 }
 

+wxString wxTextCtrl::GetStringSelection() const
+{
+    // the base class version works correctly for the rich text controls
+    // because there the lines are terminated with just '\r' which means that
+    // the string length is not changed in the result of the translations doen
+    // in GetValue() but for the normal ones when we replace "\r\n" with '\n'
+    // we break the indices
+#if wxUSE_RICHEDIT
+    if ( IsRich() )
+        return wxTextCtrlBase::GetStringSelection();
+#endif // wxUSE_RICHEDIT
+
+    long from, to;
+    GetSelection(&from, &to);
+
+    wxString str;
+    if ( from < to )
+    {
+        str = wxGetWindowText(GetHWND()).Mid(from, to - from);
+
+        // and now that we have the correct selection, convert it to the
+        // correct format
+        str = wxTextFile::Translate(str, wxTextFileType_Unix);
+    }
+
+    return str;
+}
+

 bool wxTextCtrl::IsEditable() const
 {
     long style = ::GetWindowLong(GetHwnd(), GWL_STYLE);
 bool wxTextCtrl::IsEditable() const
 {
     long style = ::GetWindowLong(GetHwnd(), GWL_STYLE);


@@ -693,62 +767,72 @@ bool wxTextCtrl::IsEditable() const
 }
 
 // ----------------------------------------------------------------------------
 }
 
 // ----------------------------------------------------------------------------

-// Editing
+// selection

 // ----------------------------------------------------------------------------
 
 // ----------------------------------------------------------------------------
 

-void wxTextCtrl::Replace(long from, long to, const wxString& value)
+void wxTextCtrl::SetSelection(long from, long to)

 {
 {

-    HWND hWnd = GetHwnd();
-    long fromChar = from;
-    long toChar = to;
-
-    // Set selection and remove it
-#ifdef __WIN32__
-    SendMessage(hWnd, EM_SETSEL, fromChar, toChar);
-    SendMessage(hWnd, EM_REPLACESEL, (WPARAM)TRUE, (LPARAM)value.c_str());
-#else
-    SendMessage(hWnd, EM_SETSEL, (WPARAM)0, (LPARAM)MAKELONG(fromChar, toChar));
-    SendMessage(hWnd, EM_REPLACESEL, (WPARAM)0, (LPARAM)value.c_str());
-#endif
+    DoSetSelection(from, to);

 }
 
 }
 

-void wxTextCtrl::Remove(long from, long to)
+void wxTextCtrl::DoSetSelection(long from, long to, bool scrollCaret)

 {
 {

+    // if from and to are both -1, it means (in wxWindows) that all text should
+    // be selected - translate into Windows convention
+    if ( (from == -1) && (to == -1) )
+    {
+        from = 0;
+        to = -1;
+    }
+

     HWND hWnd = GetHwnd();
     HWND hWnd = GetHwnd();

-    long fromChar = from;
-    long toChar = to;

 
 

-    // Cut all selected text

 #ifdef __WIN32__
 #ifdef __WIN32__

-    SendMessage(hWnd, EM_SETSEL, fromChar, toChar);
-    SendMessage(hWnd, EM_REPLACESEL, (WPARAM)TRUE, (LPARAM)"");
-#else
-    SendMessage(hWnd, EM_SETSEL, (WPARAM)0, (LPARAM)MAKELONG(fromChar, toChar));
-    SendMessage(hWnd, EM_REPLACESEL, (WPARAM)0, (LPARAM)"");
-#endif
-}
-
-void wxTextCtrl::SetSelection(long from, long to)
-{
-    HWND hWnd = GetHwnd();
-    long fromChar = from;
-    long toChar = to;
+#if wxUSE_RICHEDIT
+    if ( IsRich() )
+    {
+        CHARRANGE range;
+        range.cpMin = from;
+        range.cpMax = to;
+        SendMessage(hWnd, EM_EXSETSEL, 0, (LPARAM) &range);
+    }
+    else
+#endif // wxUSE_RICHEDIT
+    {
+        SendMessage(hWnd, EM_SETSEL, (WPARAM)from, (LPARAM)to);
+    }

 
 

-    // if from and to are both -1, it means (in wxWindows) that all text should
-    // be selected. Translate into Windows convention
-    if ((from == -1) && (to == -1))
+    if ( scrollCaret )

     {
     {

-      fromChar = 0;
-      toChar = -1;
+        SendMessage(hWnd, EM_SCROLLCARET, (WPARAM)0, (LPARAM)0);

     }
     }

+#else // Win16
+    // WPARAM is 0: selection is scrolled into view
+    SendMessage(hWnd, EM_SETSEL, (WPARAM)0, (LPARAM)MAKELONG(from, to));
+#endif // Win32/16
+}
+
+// ----------------------------------------------------------------------------
+// Editing
+// ----------------------------------------------------------------------------
+
+void wxTextCtrl::Replace(long from, long to, const wxString& value)
+{
+    // Set selection and remove it
+    DoSetSelection(from, to, FALSE);

 
 

+    SendMessage(GetHwnd(), EM_REPLACESEL,

 #ifdef __WIN32__
 #ifdef __WIN32__

-    SendMessage(hWnd, EM_SETSEL, (WPARAM)fromChar, (LPARAM)toChar);
-    SendMessage(hWnd, EM_SCROLLCARET, (WPARAM)0, (LPARAM)0);
+                TRUE,

 #else
 #else

-    // WPARAM is 0: selection is scrolled into view
-    SendMessage(hWnd, EM_SETSEL, (WPARAM)0, (LPARAM)MAKELONG(fromChar, toChar));
+                FALSE,

 #endif
 #endif

+                (LPARAM)value.c_str());
+}
+
+void wxTextCtrl::Remove(long from, long to)
+{
+    Replace(from, to, _T(""));

 }
 
 bool wxTextCtrl::LoadFile(const wxString& file)
 }
 
 bool wxTextCtrl::LoadFile(const wxString& file)


@@ -796,7 +880,7 @@ bool wxTextCtrl::PositionToXY(long pos, long *x, long *y) const
     // This gets the line number containing the character
     int lineNo;
 #if wxUSE_RICHEDIT
     // This gets the line number containing the character
     int lineNo;
 #if wxUSE_RICHEDIT

-    if ( m_isRich )
+    if ( IsRich() )

     {
         lineNo = (int)SendMessage(hWnd, EM_EXLINEFROMCHAR, 0, (LPARAM)pos);
     }
     {
         lineNo = (int)SendMessage(hWnd, EM_EXLINEFROMCHAR, 0, (LPARAM)pos);
     }


@@ -878,6 +962,11 @@ wxString wxTextCtrl::GetLineText(long lineNo) const
     return str;
 }
 
     return str;
 }
 

+void wxTextCtrl::SetMaxLength(unsigned long len)
+{
+    ::SendMessage(GetHwnd(), EM_LIMITTEXT, len, 0);
+}
+

 // ----------------------------------------------------------------------------
 // Undo/redo
 // ----------------------------------------------------------------------------
 // ----------------------------------------------------------------------------
 // Undo/redo
 // ----------------------------------------------------------------------------


@@ -928,6 +1017,52 @@ void wxTextCtrl::OnDropFiles(wxDropFilesEvent& event)
     }
 }
 
     }
 }
 

+// ----------------------------------------------------------------------------
+// kbd input processing
+// ----------------------------------------------------------------------------
+
+bool wxTextCtrl::MSWShouldPreProcessMessage(WXMSG* pMsg)
+{
+    MSG *msg = (MSG *)pMsg;
+
+    // check for our special keys here: if we don't do it and the parent frame
+    // uses them as accelerators, they wouldn't work at all, so we disable
+    // usual preprocessing for them
+    if ( msg->message == WM_KEYDOWN )
+    {
+        WORD vkey = msg->wParam;
+        if ( (HIWORD(msg->lParam) & KF_ALTDOWN) == KF_ALTDOWN )
+        {
+            if ( vkey == VK_BACK )
+                return FALSE;
+        }
+        else // no Alt
+        {
+            if ( wxIsCtrlDown() )
+            {
+                switch ( vkey )
+                {
+                    case 'C':
+                    case 'V':
+                    case 'X':
+                    case VK_INSERT:
+                    case VK_DELETE:
+                    case VK_HOME:
+                    case VK_END:
+                        return FALSE;
+                }
+            }
+            else if ( wxIsShiftDown() )
+            {
+                if ( vkey == VK_INSERT || vkey == VK_DELETE )
+                    return FALSE;
+            }
+        }
+    }
+
+    return wxControl::MSWShouldPreProcessMessage(pMsg);
+}
+

 void wxTextCtrl::OnChar(wxKeyEvent& event)
 {
     switch ( event.KeyCode() )
 void wxTextCtrl::OnChar(wxKeyEvent& event)
 {
     switch ( event.KeyCode() )


@@ -974,8 +1109,8 @@ bool wxTextCtrl::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
         case EN_KILLFOCUS:
             {
                 wxFocusEvent event(param == EN_KILLFOCUS ? wxEVT_KILL_FOCUS
         case EN_KILLFOCUS:
             {
                 wxFocusEvent event(param == EN_KILLFOCUS ? wxEVT_KILL_FOCUS

-                        : wxEVT_SET_FOCUS,
-                        m_windowId);
+                                                         : wxEVT_SET_FOCUS,
+                                   m_windowId);

                 event.SetEventObject( this );
                 GetEventHandler()->ProcessEvent(event);
             }
                 event.SetEventObject( this );
                 GetEventHandler()->ProcessEvent(event);
             }


@@ -992,7 +1127,13 @@ bool wxTextCtrl::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
 
         case EN_MAXTEXT:
             // the text size limit has been hit - increase it
 
         case EN_MAXTEXT:
             // the text size limit has been hit - increase it

-            AdjustSpaceLimit();
+            if ( !AdjustSpaceLimit() )
+            {
+                wxCommandEvent event(wxEVT_COMMAND_TEXT_MAXLEN, m_windowId);
+                InitCommandEvent(event);
+                event.SetString(GetValue());
+                ProcessCommand(event);
+            }

             break;
 
             // the other notification messages are not processed
             break;
 
             // the other notification messages are not processed


@@ -1079,19 +1220,35 @@ void wxTextCtrl::OnEraseBackground(wxEraseEvent& event)
     ::SetMapMode(hdc, mode);
 
 }
     ::SetMapMode(hdc, mode);
 
 }

-#endif
+#endif // Win16

 
 

-void wxTextCtrl::AdjustSpaceLimit()
+bool wxTextCtrl::AdjustSpaceLimit()

 {
 #ifndef __WIN16__
 {
 #ifndef __WIN16__

-    unsigned int len = ::GetWindowTextLength(GetHwnd()),
-    limit = ::SendMessage(GetHwnd(), EM_GETLIMITTEXT, 0, 0);
+    unsigned int limit = ::SendMessage(GetHwnd(), EM_GETLIMITTEXT, 0, 0);
+
+    // HACK: we try to automatically extend the limit for the amount of text
+    //       to allow (interactively) entering more than 64Kb of text under
+    //       Win9x but we shouldn't reset the text limit which was previously
+    //       set explicitly with SetMaxLength()
+    //
+    //       we could solve this by storing the limit we set in wxTextCtrl but
+    //       to save space we prefer to simply test here the actual limit
+    //       value: we consider that SetMaxLength() can only be called for
+    //       values < 32Kb
+    if ( limit < 0x8000 )
+    {
+        // we've got more text than limit set by SetMaxLength()
+        return FALSE;
+    }
+
+    unsigned int len = ::GetWindowTextLength(GetHwnd());

     if ( len >= limit )
     {
         limit = len + 0x8000;    // 32Kb
 
 #if wxUSE_RICHEDIT
     if ( len >= limit )
     {
         limit = len + 0x8000;    // 32Kb
 
 #if wxUSE_RICHEDIT

-        if ( m_isRich )
+        if ( IsRich() )

         {
             // as a nice side effect, this also allows passing limit > 64Kb
             ::SendMessage(GetHwnd(), EM_EXLIMITTEXT, 0, limit);
         {
             // as a nice side effect, this also allows passing limit > 64Kb
             ::SendMessage(GetHwnd(), EM_EXLIMITTEXT, 0, limit);


@@ -1110,6 +1267,9 @@ void wxTextCtrl::AdjustSpaceLimit()
         }
     }
 #endif // !Win16
         }
     }
 #endif // !Win16

+
+    // we changed the limit
+    return TRUE;

 }
 
 bool wxTextCtrl::AcceptsFocus() const
 }
 
 bool wxTextCtrl::AcceptsFocus() const


@@ -1346,7 +1506,9 @@ bool wxTextCtrl::SetStyle(long start, long end, const wxTextAttr& style)
     bool changeSel = start != startOld || end != endOld;
 
     if ( changeSel )
     bool changeSel = start != startOld || end != endOld;
 
     if ( changeSel )

-        SendMessage(GetHwnd(), EM_SETSEL, (WPARAM) start, (LPARAM) end);
+    {
+        DoSetSelection(start, end, FALSE);
+    }

 
     // initialize CHARFORMAT struct
 #if wxUSE_RICHEDIT2
 
     // initialize CHARFORMAT struct
 #if wxUSE_RICHEDIT2


@@ -1359,6 +1521,9 @@ bool wxTextCtrl::SetStyle(long start, long end, const wxTextAttr& style)
 
     if ( style.HasFont() )
     {
 
     if ( style.HasFont() )
     {

+        // VZ: CFM_CHARSET doesn't seem to do anything at all in RichEdit 2.0
+        //     but using it doesn't seem to hurt neither so leaving it for now
+

         cf.dwMask |= CFM_FACE | CFM_SIZE | CFM_CHARSET |
                      CFM_ITALIC | CFM_BOLD | CFM_UNDERLINE;
 
         cf.dwMask |= CFM_FACE | CFM_SIZE | CFM_CHARSET |
                      CFM_ITALIC | CFM_BOLD | CFM_UNDERLINE;
 


@@ -1419,7 +1584,7 @@ bool wxTextCtrl::SetStyle(long start, long end, const wxTextAttr& style)
     if ( changeSel )
     {
         // restore the original selection
     if ( changeSel )
     {
         // restore the original selection

-        SendMessage(GetHwnd(), EM_SETSEL, (WPARAM)startOld, (LPARAM)endOld);
+        DoSetSelection(startOld, endOld, FALSE);

     }
 
     return ok;
     }
 
     return ok;