X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/ad81651f00edc6f489d9b6a0839d316a964fd521..803c55373484d1e2bfed85b46cbbfff8bfad1276:/src/msw/textctrl.cpp diff --git a/src/msw/textctrl.cpp b/src/msw/textctrl.cpp index 458cb8f4c8..ff6b6c1c97 100644 --- a/src/msw/textctrl.cpp +++ b/src/msw/textctrl.cpp @@ -1,5 +1,5 @@ ///////////////////////////////////////////////////////////////////////////// -// Name: textctrl.cpp +// Name: msw/textctrl.cpp // Purpose: wxTextCtrl // Author: Julian Smart // Modified by: @@ -38,6 +38,8 @@ #include "wx/app.h" #endif +#include "wx/module.h" + #if wxUSE_CLIPBOARD #include "wx/clipbrd.h" #endif @@ -58,10 +60,45 @@ # include #endif -#if wxUSE_RICHEDIT +#if wxUSE_RICHEDIT && !defined(__GNUWIN32_OLD__) #include #endif +// ---------------------------------------------------------------------------- +// private classes +// ---------------------------------------------------------------------------- + +#if wxUSE_RICHEDIT + +// this module initializes RichEdit DLL if needed +class wxRichEditModule : public wxModule +{ +public: + virtual bool OnInit(); + virtual void OnExit(); + + // get the version currently loaded, -1 if none + static int GetLoadedVersion() { return ms_verRichEdit; } + + // load the richedit DLL of at least of required version + static bool Load(int version = 1); + +private: + // the handle to richedit DLL and the version of the DLL loaded + static HINSTANCE ms_hRichEdit; + + // the DLL version loaded or -1 if none + static int ms_verRichEdit; + + DECLARE_DYNAMIC_CLASS(wxRichEditModule) +}; + +HINSTANCE wxRichEditModule::ms_hRichEdit = (HINSTANCE)NULL; +int wxRichEditModule::ms_verRichEdit = -1; + +IMPLEMENT_DYNAMIC_CLASS(wxRichEditModule, wxModule) + +#endif // wxUSE_RICHEDIT // ---------------------------------------------------------------------------- // event tables and other macros @@ -84,9 +121,11 @@ BEGIN_EVENT_TABLE(wxTextCtrl, wxControl) EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste) EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo) EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo) +#ifdef __WIN16__ + EVT_ERASE_BACKGROUND(wxTextCtrl::OnEraseBackground) +#endif END_EVENT_TABLE() - // ============================================================================ // implementation // ============================================================================ @@ -117,17 +156,17 @@ bool wxTextCtrl::Create(wxWindow *parent, wxWindowID id, if ( parent ) parent->AddChild(this); - // set colours - SetupColours(); - // translate wxWin style flags to MSW ones, checking for consistency while // doing it long msStyle = ES_LEFT | WS_VISIBLE | WS_CHILD | WS_TABSTOP; + + if ( m_windowStyle & wxCLIP_SIBLINGS ) + msStyle |= WS_CLIPSIBLINGS; + if ( m_windowStyle & wxTE_MULTILINE ) { wxASSERT_MSG( !(m_windowStyle & wxTE_PROCESS_ENTER), - wxT("wxTE_PROCESS_ENTER style is ignored for multiline " - "text controls (they always process it)") ); + wxT("wxTE_PROCESS_ENTER style is ignored for multiline text controls (they always process it)") ); msStyle |= ES_MULTILINE | ES_WANTRETURN; if ((m_windowStyle & wxTE_NO_VSCROLL) == 0) @@ -143,11 +182,13 @@ bool wxTextCtrl::Create(wxWindow *parent, wxWindowID id, if (m_windowStyle & wxTE_READONLY) msStyle |= ES_READONLY; - if (m_windowStyle & wxHSCROLL) - msStyle |= (WS_HSCROLL | ES_AUTOHSCROLL); if (m_windowStyle & wxTE_PASSWORD) // hidden input msStyle |= ES_PASSWORD; + if (m_windowStyle & wxTE_AUTO_SCROLL) + msStyle |= ES_AUTOHSCROLL; + + // we always want the characters and the arrows m_lDlgCode = DLGC_WANTCHARS | DLGC_WANTARROWS; @@ -164,7 +205,7 @@ bool wxTextCtrl::Create(wxWindow *parent, wxWindowID id, m_lDlgCode |= DLGC_WANTTAB; // do create the control - either an EDIT or RICHEDIT - const wxChar *windowClass = wxT("EDIT"); + wxString windowClass = wxT("EDIT"); #if wxUSE_RICHEDIT if ( m_windowStyle & wxTE_RICH ) @@ -176,10 +217,9 @@ bool wxTextCtrl::Create(wxWindow *parent, wxWindowID id, { // first try to load the RichEdit DLL (will do nothing if already // done) - if ( !wxTheApp->InitRichEdit() ) + if ( !wxRichEditModule::Load() ) { - wxLogError(_("Impossible to create a rich edit control, " - "using simple text control instead.")); + wxLogError(_("Impossible to create a rich edit control, using simple text control instead. Please reinstall riched32.dll")); s_errorGiven = TRUE; } @@ -193,12 +233,31 @@ bool wxTextCtrl::Create(wxWindow *parent, wxWindowID id, { msStyle |= ES_AUTOVSCROLL; m_isRich = TRUE; - windowClass = wxT("RICHEDIT"); + + int ver = wxRichEditModule::GetLoadedVersion(); + if ( ver == 1 ) + { + windowClass = wxT("RICHEDIT"); + } + else + { +#ifndef RICHEDIT_CLASS + wxString RICHEDIT_CLASS; + RICHEDIT_CLASS.Printf(_T("RichEdit%d0"), ver); +#if wxUSE_UNICODE + RICHEDIT_CLASS += _T('W'); +#else // ANSI + RICHEDIT_CLASS += _T('A'); +#endif // Unicode/ANSI +#endif // !RICHEDIT_CLASS + + windowClass = RICHEDIT_CLASS; + } } } else m_isRich = FALSE; -#endif +#endif // wxUSE_RICHEDIT bool want3D; WXDWORD exStyle = Determine3DEffects(WS_EX_CLIENTEDGE, &want3D); @@ -212,7 +271,7 @@ bool wxTextCtrl::Create(wxWindow *parent, wxWindowID id, // 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, + windowClass.c_str(), NULL, msStyle, 0, 0, 0, 0, @@ -261,6 +320,9 @@ bool wxTextCtrl::Create(wxWindow *parent, wxWindowID id, } #endif + // set colours + SetupColours(); + SetSize(pos.x, pos.y, size.x, size.y); return TRUE; @@ -298,8 +360,13 @@ void wxTextCtrl::AdoptAttributesFromHWND() void wxTextCtrl::SetupColours() { - // FIXME why is bg colour not inherited from parent? - SetBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_WINDOW)); + 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()); } @@ -309,16 +376,70 @@ void wxTextCtrl::SetupColours() wxString wxTextCtrl::GetValue() const { - return wxGetWindowText(GetHWND()); + // we can't use wxGetWindowText() (i.e. WM_GETTEXT internally) for + // retrieving more than 64Kb under Win9x +#if wxUSE_RICHEDIT + if ( m_isRich ) + { + wxString str; + + int len = GetWindowTextLength(GetHwnd()); + if ( len ) + { + // alloc one extra WORD as needed by the control + wxChar *p = str.GetWriteBuf(++len); + + TEXTRANGE textRange; + textRange.chrg.cpMin = 0; + textRange.chrg.cpMax = -1; + textRange.lpstrText = p; + + (void)SendMessage(GetHwnd(), EM_GETTEXTRANGE, 0, (LPARAM)&textRange); + + // believe it or not, but EM_GETTEXTRANGE uses just CR ('\r') for + // the newlines which is neither Unix nor Windows style (Win95 with + // riched20.dll shows this behaviour) - convert it to something + // reasonable + for ( ; *p; p++ ) + { + if ( *p == _T('\r') ) + *p = _T('\n'); + } + + str.UngetWriteBuf(); + } + //else: no text at all, leave the string empty + + return str; + } +#endif // wxUSE_RICHEDIT + + // WM_GETTEXT uses standard DOS CR+LF (\r\n) convention - convert to the + // same one as above for consitency + wxString str = wxGetWindowText(GetHWND()); + + return wxTextFile::Translate(str, wxTextFileType_Unix); } void wxTextCtrl::SetValue(const wxString& value) { - wxString valueDos = wxTextFile::Translate(value, wxTextFileType_Dos); - - if ( valueDos != GetValue() ) + // if the text is long enough, it's faster to just set it instead of first + // comparing it with the old one (chances are that it will be different + // anyhow, this comparison is there to avoid flicker for small single-line + // edit controls mostly) + if ( (value.length() > 0x400) || (value != GetValue()) ) { - SetWindowText(GetHwnd(), valueDos); + wxString valueDos = wxTextFile::Translate(value, wxTextFileType_Dos); + + SetWindowText(GetHwnd(), valueDos.c_str()); + + // for compatibility with the GTK and because it is more logical, we + // move the cursor to the end of the text after SetValue() + + // 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(); AdjustSpaceLimit(); } @@ -328,6 +449,17 @@ 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()) ) + { + long start, end; + GetSelection(&start, &end); + SetStyle(start, end, m_defaultStyle ); + } +#endif // wxUSE_RICHEDIT + SendMessage(GetHwnd(), EM_REPLACESEL, 0, (LPARAM)valueDos.c_str()); AdjustSpaceLimit(); @@ -380,7 +512,7 @@ bool wxTextCtrl::CanCopy() const // Can copy if there's a selection long from, to; GetSelection(& from, & to); - return (from != to); + return (from != to) ; } bool wxTextCtrl::CanCut() const @@ -388,7 +520,7 @@ bool wxTextCtrl::CanCut() const // Can cut if there's a selection long from, to; GetSelection(& from, & to); - return (from != to); + return (from != to) && (IsEditable()); } bool wxTextCtrl::CanPaste() const @@ -447,7 +579,7 @@ void wxTextCtrl::SetInsertionPoint(long pos) SendMessage(hWnd, EM_SETSEL, 0, MAKELPARAM(pos, pos)); #endif // Win32/16 - static const char *nothing = ""; + static const wxChar *nothing = _T(""); SendMessage(hWnd, EM_REPLACESEL, 0, (LPARAM)nothing); } @@ -503,18 +635,19 @@ void wxTextCtrl::GetSelection(long* from, long* to) const *from = charRange.cpMin; *to = charRange.cpMax; - - return; } -#endif - DWORD dwStart, dwEnd; - WPARAM wParam = (WPARAM) (DWORD*) & dwStart; // receives starting position - LPARAM lParam = (LPARAM) (DWORD*) & dwEnd; // receives ending position + else +#endif // rich/!rich + { + 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, lParam); - *from = dwStart; - *to = dwEnd; + *from = dwStart; + *to = dwEnd; + } } bool wxTextCtrl::IsEditable() const @@ -701,14 +834,19 @@ int wxTextCtrl::GetLineLength(long lineNo) const wxString wxTextCtrl::GetLineText(long lineNo) const { size_t len = (size_t)GetLineLength(lineNo) + 1; - char *buf = (char *)malloc(len); - *(WORD *)buf = len; - int noChars = (int)SendMessage(GetHwnd(), EM_GETLINE, lineNo, (LPARAM)buf); - buf[noChars] = 0; - wxString str(buf); + // there must be at least enough place for the length WORD in the + // buffer + len += sizeof(WORD); + + wxString str; + wxChar *buf = str.GetWriteBuf(len); + + *(WORD *)buf = (WORD)len; + len = (size_t)::SendMessage(GetHwnd(), EM_GETLINE, lineNo, (LPARAM)buf); + buf[len] = 0; - free(buf); + str.UngetWriteBuf(len); return str; } @@ -771,7 +909,8 @@ void wxTextCtrl::OnChar(wxKeyEvent& event) if ( !(m_windowStyle & wxTE_MULTILINE) ) { wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId); - event.SetEventObject( this ); + InitCommandEvent(event); + event.SetString(GetValue()); if ( GetEventHandler()->ProcessEvent(event) ) return; } @@ -784,30 +923,19 @@ void wxTextCtrl::OnChar(wxKeyEvent& event) // ourselves the fact that we got here means that the user code // decided to skip processing of this TAB - probably to let it // do its default job. - // - // NB: Notice that Ctrl-Tab is handled elsewhere and Alt-Tab is - // handled by Windows { wxNavigationKeyEvent eventNav; eventNav.SetDirection(!event.ShiftDown()); - eventNav.SetWindowChange(FALSE); + eventNav.SetWindowChange(event.ControlDown()); eventNav.SetEventObject(this); - if ( GetEventHandler()->ProcessEvent(eventNav) ) + if ( GetParent()->GetEventHandler()->ProcessEvent(eventNav) ) return; } break; - - default: - event.Skip(); - return; } - // don't just call event.Skip() because this will cause TABs and ENTERs - // be passed upwards and we don't always want this - instead process it - // right here - - // FIXME + // no, we didn't process it event.Skip(); } @@ -829,24 +957,23 @@ bool wxTextCtrl::MSWCommand(WXUINT param, WXWORD WXUNUSED(id)) case EN_CHANGE: { wxCommandEvent event(wxEVT_COMMAND_TEXT_UPDATED, m_windowId); - wxString val(GetValue()); - if ( !val.IsNull() ) - event.m_commandString = WXSTRINGCAST val; - event.SetEventObject( this ); + InitCommandEvent(event); + event.SetString(GetValue()); ProcessCommand(event); } break; - case EN_ERRSPACE: + case EN_MAXTEXT: // the text size limit has been hit - increase it AdjustSpaceLimit(); break; // the other notification messages are not processed case EN_UPDATE: - case EN_MAXTEXT: + case EN_ERRSPACE: case EN_HSCROLL: case EN_VSCROLL: + return FALSE; default: return FALSE; } @@ -855,25 +982,107 @@ bool wxTextCtrl::MSWCommand(WXUINT param, WXWORD WXUNUSED(id)) return TRUE; } +WXHBRUSH wxTextCtrl::OnCtlColor(WXHDC pDC, WXHWND WXUNUSED(pWnd), WXUINT WXUNUSED(nCtlColor), +#if wxUSE_CTL3D + WXUINT message, + WXWPARAM wParam, + WXLPARAM lParam +#else + WXUINT WXUNUSED(message), + WXWPARAM WXUNUSED(wParam), + WXLPARAM WXUNUSED(lParam) +#endif + ) +{ +#if wxUSE_CTL3D + if ( m_useCtl3D ) + { + HBRUSH hbrush = Ctl3dCtlColorEx(message, wParam, lParam); + return (WXHBRUSH) hbrush; + } +#endif // wxUSE_CTL3D + + HDC hdc = (HDC)pDC; + if (GetParent()->GetTransparentBackground()) + SetBkMode(hdc, TRANSPARENT); + else + SetBkMode(hdc, OPAQUE); + + wxColour colBack = GetBackgroundColour(); + + if (!IsEnabled() && (GetWindowStyle() & wxTE_MULTILINE) == 0) + colBack = wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DFACE); + + ::SetBkColor(hdc, wxColourToRGB(colBack)); + ::SetTextColor(hdc, wxColourToRGB(GetForegroundColour())); + + wxBrush *brush = wxTheBrushList->FindOrCreateBrush(colBack, wxSOLID); + + return (WXHBRUSH)brush->GetResourceHandle(); +} + +// In WIN16, need to override normal erasing because +// Ctl3D doesn't use the wxWindows background colour. +#ifdef __WIN16__ +void wxTextCtrl::OnEraseBackground(wxEraseEvent& event) +{ + wxColour col(m_backgroundColour); + +#if wxUSE_CTL3D + if (m_useCtl3D) + col = wxSystemSettings::GetSystemColour(wxSYS_COLOUR_WINDOW); +#endif + + RECT rect; + ::GetClientRect(GetHwnd(), &rect); + + COLORREF ref = PALETTERGB(col.Red(), + col.Green(), + col.Blue()); + HBRUSH hBrush = ::CreateSolidBrush(ref); + if ( !hBrush ) + wxLogLastError(wxT("CreateSolidBrush")); + + HDC hdc = (HDC)event.GetDC()->GetHDC(); + + int mode = ::SetMapMode(hdc, MM_TEXT); + + ::FillRect(hdc, &rect, hBrush); + ::DeleteObject(hBrush); + ::SetMapMode(hdc, mode); + +} +#endif + void wxTextCtrl::AdjustSpaceLimit() { #ifndef __WIN16__ unsigned int len = ::GetWindowTextLength(GetHwnd()), limit = ::SendMessage(GetHwnd(), EM_GETLIMITTEXT, 0, 0); - if ( len > limit ) + if ( len >= limit ) { limit = len + 0x8000; // 32Kb #if wxUSE_RICHEDIT - if ( m_isRich || limit > 0xffff ) -#else - if ( limit > 0xffff ) -#endif - ::SendMessage(GetHwnd(), EM_LIMITTEXT, 0, limit); + if ( m_isRich ) + { + // as a nice side effect, this also allows passing limit > 64Kb + ::SendMessage(GetHwnd(), EM_EXLIMITTEXT, 0, limit); + } else +#endif // wxUSE_RICHEDIT + { + if ( limit > 0xffff ) + { + // this will set it to a platform-dependent maximum (much more + // than 64Kb under NT) + limit = 0; + } + ::SendMessage(GetHwnd(), EM_LIMITTEXT, limit, 0); + } } -#endif +#endif // !Win16 } bool wxTextCtrl::AcceptsFocus() const @@ -892,7 +1101,7 @@ wxSize wxTextCtrl::DoGetBestSize() const int hText = EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy); if ( m_windowStyle & wxTE_MULTILINE ) { - hText *= wxMin(GetNumberOfLines(), 5); + hText *= wxMax(GetNumberOfLines(), 5); } //else: for single line control everything is ok @@ -903,27 +1112,27 @@ wxSize wxTextCtrl::DoGetBestSize() const // standard handlers for standard edit menu events // ---------------------------------------------------------------------------- -void wxTextCtrl::OnCut(wxCommandEvent& event) +void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event)) { Cut(); } -void wxTextCtrl::OnCopy(wxCommandEvent& event) +void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event)) { Copy(); } -void wxTextCtrl::OnPaste(wxCommandEvent& event) +void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event)) { Paste(); } -void wxTextCtrl::OnUndo(wxCommandEvent& event) +void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event)) { Undo(); } -void wxTextCtrl::OnRedo(wxCommandEvent& event) +void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event)) { Redo(); } @@ -953,3 +1162,223 @@ void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event) event.Enable( CanRedo() ); } +// the rest of the file only deals with the rich edit controls +#if wxUSE_RICHEDIT + +// ---------------------------------------------------------------------------- +// colour setting for the rich edit controls +// ---------------------------------------------------------------------------- + +// Watcom C++ doesn't define this +#ifndef SCF_ALL +#define SCF_ALL 0x0004 +#endif + +bool wxTextCtrl::SetBackgroundColour(const wxColour& colour) +{ + if ( !wxTextCtrlBase::SetBackgroundColour(colour) ) + { + // colour didn't really change + return FALSE; + } + + if ( IsRich() ) + { + // rich edit doesn't use WM_CTLCOLOR, hence we need to send + // EM_SETBKGNDCOLOR additionally + ::SendMessage(GetHwnd(), EM_SETBKGNDCOLOR, 0, wxColourToRGB(colour)); + } + + return TRUE; +} + +bool wxTextCtrl::SetForegroundColour(const wxColour& colour) +{ + if ( !wxTextCtrlBase::SetForegroundColour(colour) ) + { + // colour didn't really change + return FALSE; + } + + if ( IsRich() ) + { + // change the colour of everything + CHARFORMAT cf; + wxZeroMemory(cf); + cf.cbSize = sizeof(cf); + cf.dwMask = CFM_COLOR; + cf.crTextColor = wxColourToRGB(colour); + ::SendMessage(GetHwnd(), EM_SETCHARFORMAT, SCF_ALL, (LPARAM)&cf); + } + + return TRUE; +} + +// ---------------------------------------------------------------------------- +// styling support for rich edit controls +// ---------------------------------------------------------------------------- + +bool wxTextCtrl::SetStyle(long start, long end, const wxTextAttr& style) +{ + if ( !IsRich() ) + { + // can't do it with normal text control + return FALSE; + } + + // the rich text control doesn't handle setting background colour, so don't + // even try if it's the only thing we want to change + if ( !style.HasFont() && !style.HasTextColour() ) + { + // nothing to do: return TRUE if there was really nothing to doand + // FALSE fi we failed to set bg colour + return !style.HasBackgroundColour(); + } + + // order the range if needed + if ( start > end ) + { + long tmp = start; + start = end; + end = tmp; + } + + // we can only change the format of the selection, so select the range we + // want and restore the old selection later + long startOld, endOld; + GetSelection(&startOld, &endOld); + + // but do we really have to change the selection? + bool changeSel = start != startOld || end != endOld; + + if ( changeSel ) + SendMessage(GetHwnd(), EM_SETSEL, (WPARAM) start, (LPARAM) end); + + // initialize CHARFORMAT struct + CHARFORMAT cf; + wxZeroMemory(cf); + cf.cbSize = sizeof(cf); + + if ( style.HasFont() ) + { + cf.dwMask |= CFM_FACE | CFM_SIZE | CFM_CHARSET; + + // fill in data from LOGFONT but recalculate lfHeight because we need + // the real height in twips and not the negative number which + // wxFillLogFont() returns (this is correct in general and works with + // the Windows font mapper, but not here) + LOGFONT lf; + wxFillLogFont(&lf, &style.GetFont()); + cf.yHeight = 20*style.GetFont().GetPointSize(); // 1 pt = 20 twips + cf.bCharSet = lf.lfCharSet; + cf.bPitchAndFamily = lf.lfPitchAndFamily; + wxStrncpy( cf.szFaceName, lf.lfFaceName, WXSIZEOF(cf.szFaceName) ); + + // also deal with underline/italic/bold attributes + if ( lf.lfItalic ) + { + cf.dwMask |= CFM_ITALIC; + cf.dwEffects |= CFE_ITALIC; + } + + if ( lf.lfWeight == FW_BOLD ) + { + cf.dwMask |= CFM_BOLD; + cf.dwEffects |= CFE_BOLD; + } + + if ( lf.lfUnderline ) + { + cf.dwMask |= CFM_UNDERLINE; + cf.dwEffects |= CFE_UNDERLINE; + } + + // strikeout fonts are not supported by wxWindows + } + + if ( style.HasTextColour() ) + { + cf.dwMask |= CFM_COLOR; + cf.crTextColor = wxColourToRGB(style.GetTextColour()); + } + + // do format the selection + bool ok = ::SendMessage(GetHwnd(), EM_SETCHARFORMAT, + SCF_SELECTION, (LPARAM)&cf) != 0; + if ( !ok ) + { + wxLogDebug(_T("SendMessage(EM_SETCHARFORMAT, SCF_SELECTION) failed")); + } + + if ( changeSel ) + { + // restore the original selection + SendMessage(GetHwnd(), EM_SETSEL, (WPARAM)startOld, (LPARAM)endOld); + } + + return ok; +} + +// ---------------------------------------------------------------------------- +// wxRichEditModule +// ---------------------------------------------------------------------------- + +bool wxRichEditModule::OnInit() +{ + // don't do anything - we will load it when needed + return TRUE; +} + +void wxRichEditModule::OnExit() +{ + if ( ms_hRichEdit ) + { + FreeLibrary(ms_hRichEdit); + } +} + +/* static */ +bool wxRichEditModule::Load(int version) +{ + wxCHECK_MSG( version >= 1 && version <= 3, FALSE, + _T("incorrect richedit control version requested") ); + + if ( version <= ms_verRichEdit ) + { + // we've already got this or better + return TRUE; + } + + if ( ms_hRichEdit ) + { + ::FreeLibrary(ms_hRichEdit); + } + + // always try load riched20.dll first - like this we won't have to reload + // it later if we're first asked for RE 1 and then for RE 2 or 3 + wxString dllname = _T("riched20.dll"); + ms_hRichEdit = ::LoadLibrary(dllname); + ms_verRichEdit = 2; // no way to tell if it's 2 or 3, assume 2 + + if ( !ms_hRichEdit && (version == 1) ) + { + // fall back to RE 1 + dllname = _T("riched32.dll"); + ms_hRichEdit = ::LoadLibrary(dllname); + ms_verRichEdit = 1; + } + + if ( !ms_hRichEdit ) + { + wxLogSysError(_("Could not load Rich Edit DLL '%s'"), dllname.c_str()); + + ms_verRichEdit = -1; + + return FALSE; + } + + return TRUE; +} + +#endif // wxUSE_RICHEDIT +