+#if wxUSE_RICHEDIT
+ if ( IsRich() )
+ {
+ CHARRANGE charRange;
+ ::SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &charRange);
+
+ *from = charRange.cpMin;
+ *to = charRange.cpMax;
+ }
+ else
+#endif // !wxUSE_RICHEDIT
+ {
+ wxTextEntry::GetSelection(from, to);
+ }
+}
+
+// ----------------------------------------------------------------------------
+// selection
+// ----------------------------------------------------------------------------
+
+void wxTextCtrl::DoSetSelection(long from, long to, int flags)
+{
+ HWND hWnd = GetHwnd();
+
+#if wxUSE_RICHEDIT
+ if ( IsRich() )
+ {
+ // if from and to are both -1, it means (in wxWidgets) that all text
+ // should be selected, translate this into Windows convention
+ if ( (from == -1) && (to == -1) )
+ {
+ from = 0;
+ }
+
+ CHARRANGE range;
+ range.cpMin = from;
+ range.cpMax = to;
+ ::SendMessage(hWnd, EM_EXSETSEL, 0, (LPARAM)&range);
+ }
+ else
+#endif // wxUSE_RICHEDIT
+ {
+ wxTextEntry::DoSetSelection(from, to, flags);
+ }
+
+ if ( (flags & SetSel_Scroll) && !IsFrozen() )
+ {
+#if wxUSE_RICHEDIT
+ // richedit 3.0 (i.e. the version living in riched20.dll distributed
+ // with Windows 2000 and beyond) doesn't honour EM_SCROLLCARET when
+ // emulating richedit 2.0 unless the control has focus or ECO_NOHIDESEL
+ // option is set (but it does work ok in richedit 1.0 mode...)
+ //
+ // so to make it work we either need to give focus to it here which
+ // will probably create many problems (dummy focus events; window
+ // containing the text control being brought to foreground
+ // unexpectedly; ...) or to temporarily set ECO_NOHIDESEL which may
+ // create other problems too -- and in fact it does because if we turn
+ // on/off this style while appending the text to the control, the
+ // vertical scrollbar never appears in it even if we append tons of
+ // text and to work around this the only solution I found was to use
+ // ES_DISABLENOSCROLL
+ //
+ // this is very ugly but I don't see any other way to make this work
+ long style = 0;
+ if ( GetRichVersion() > 1 )
+ {
+ if ( !HasFlag(wxTE_NOHIDESEL) )
+ {
+ // setting ECO_NOHIDESEL also sets WS_VISIBLE and possibly
+ // others, remember the style so we can reset it later if needed
+ style = ::GetWindowLong(GetHwnd(), GWL_STYLE);
+ ::SendMessage(GetHwnd(), EM_SETOPTIONS,
+ ECOOP_OR, ECO_NOHIDESEL);
+ }
+ //else: everything is already ok
+ }
+#endif // wxUSE_RICHEDIT
+
+ ::SendMessage(hWnd, EM_SCROLLCARET, 0, (LPARAM)0);
+
+#if wxUSE_RICHEDIT
+ // restore ECO_NOHIDESEL if we changed it
+ if ( GetRichVersion() > 1 && !HasFlag(wxTE_NOHIDESEL) )
+ {
+ ::SendMessage(GetHwnd(), EM_SETOPTIONS,
+ ECOOP_AND, ~ECO_NOHIDESEL);
+ if ( style != ::GetWindowLong(GetHwnd(), GWL_STYLE) )
+ ::SetWindowLong(GetHwnd(), GWL_STYLE, style);
+ }
+#endif // wxUSE_RICHEDIT
+ }
+}
+
+// ----------------------------------------------------------------------------
+// Working with files
+// ----------------------------------------------------------------------------
+
+bool wxTextCtrl::DoLoadFile(const wxString& file, int fileType)
+{
+ if ( wxTextCtrlBase::DoLoadFile(file, fileType) )
+ {
+ // update the size limit if needed
+ AdjustSpaceLimit();
+
+ return true;
+ }
+
+ return false;
+}
+
+// ----------------------------------------------------------------------------
+// dirty status
+// ----------------------------------------------------------------------------
+
+bool wxTextCtrl::IsModified() const
+{
+ return ::SendMessage(GetHwnd(), EM_GETMODIFY, 0, 0) != 0;
+}
+
+void wxTextCtrl::MarkDirty()
+{
+ ::SendMessage(GetHwnd(), EM_SETMODIFY, TRUE, 0);
+}
+
+void wxTextCtrl::DiscardEdits()
+{
+ ::SendMessage(GetHwnd(), EM_SETMODIFY, FALSE, 0);
+}
+
+// ----------------------------------------------------------------------------
+// Positions <-> coords
+// ----------------------------------------------------------------------------
+
+int wxTextCtrl::GetNumberOfLines() const
+{
+ return (int)::SendMessage(GetHwnd(), EM_GETLINECOUNT, 0, 0);
+}
+
+long wxTextCtrl::XYToPosition(long x, long y) const
+{
+ // This gets the char index for the _beginning_ of this line
+ long charIndex = ::SendMessage(GetHwnd(), EM_LINEINDEX, y, 0);
+
+ return charIndex + x;
+}
+
+bool wxTextCtrl::PositionToXY(long pos, long *x, long *y) const
+{
+ HWND hWnd = GetHwnd();
+
+ // This gets the line number containing the character
+ long lineNo;
+#if wxUSE_RICHEDIT
+ if ( IsRich() )
+ {
+ lineNo = ::SendMessage(hWnd, EM_EXLINEFROMCHAR, 0, pos);
+ }
+ else
+#endif // wxUSE_RICHEDIT
+ {
+ lineNo = ::SendMessage(hWnd, EM_LINEFROMCHAR, pos, 0);
+ }
+
+ if ( lineNo == -1 )
+ {
+ // no such line
+ return false;
+ }
+
+ // This gets the char index for the _beginning_ of this line
+ long charIndex = ::SendMessage(hWnd, EM_LINEINDEX, lineNo, 0);
+ if ( charIndex == -1 )
+ {
+ return false;
+ }
+
+ // The X position must therefore be the different between pos and charIndex
+ if ( x )
+ *x = pos - charIndex;
+ if ( y )
+ *y = lineNo;
+
+ return true;
+}
+
+wxTextCtrlHitTestResult
+wxTextCtrl::HitTest(const wxPoint& pt, long *posOut) const
+{
+ // first get the position from Windows
+ LPARAM lParam;
+
+#if wxUSE_RICHEDIT
+ POINTL ptl;
+ if ( IsRich() )
+ {
+ // for rich edit controls the position is passed iva the struct fields
+ ptl.x = pt.x;
+ ptl.y = pt.y;
+ lParam = (LPARAM)&ptl;
+ }
+ else
+#endif // wxUSE_RICHEDIT
+ {
+ // for the plain ones, we are limited to 16 bit positions which are
+ // combined in a single 32 bit value
+ lParam = MAKELPARAM(pt.x, pt.y);
+ }
+
+ LRESULT pos = ::SendMessage(GetHwnd(), EM_CHARFROMPOS, 0, lParam);
+
+ if ( pos == -1 )
+ {
+ // this seems to indicate an error...
+ return wxTE_HT_UNKNOWN;
+ }
+
+#if wxUSE_RICHEDIT
+ if ( !IsRich() )
+#endif // wxUSE_RICHEDIT
+ {
+ // for plain EDIT controls the higher word contains something else
+ pos = LOWORD(pos);
+ }
+
+
+ // next determine where it is relatively to our point: EM_CHARFROMPOS
+ // always returns the closest character but we need to be more precise, so
+ // double check that we really are where it pretends
+ POINTL ptReal;
+
+#if wxUSE_RICHEDIT
+ // FIXME: we need to distinguish between richedit 2 and 3 here somehow but
+ // we don't know how to do it
+ if ( IsRich() )
+ {
+ ::SendMessage(GetHwnd(), EM_POSFROMCHAR, (WPARAM)&ptReal, pos);
+ }
+ else
+#endif // wxUSE_RICHEDIT
+ {
+ LRESULT lRc = ::SendMessage(GetHwnd(), EM_POSFROMCHAR, pos, 0);
+
+ if ( lRc == -1 )
+ {
+ // this is apparently returned when pos corresponds to the last
+ // position
+ ptReal.x =
+ ptReal.y = 0;
+ }
+ else
+ {
+ ptReal.x = LOWORD(lRc);
+ ptReal.y = HIWORD(lRc);
+ }
+ }
+
+ wxTextCtrlHitTestResult rc;
+
+ if ( pt.y > ptReal.y + GetCharHeight() )
+ rc = wxTE_HT_BELOW;
+ else if ( pt.x > ptReal.x + GetCharWidth() )
+ rc = wxTE_HT_BEYOND;
+ else
+ rc = wxTE_HT_ON_TEXT;
+
+ if ( posOut )
+ *posOut = pos;
+
+ return rc;
+}
+
+// ----------------------------------------------------------------------------
+//
+// ----------------------------------------------------------------------------
+
+void wxTextCtrl::ShowPosition(long pos)
+{
+ HWND hWnd = GetHwnd();
+
+ // To scroll to a position, we pass the number of lines and characters
+ // to scroll *by*. This means that we need to:
+ // (1) Find the line position of the current line.
+ // (2) Find the line position of pos.
+ // (3) Scroll by (pos - current).
+ // For now, ignore the horizontal scrolling.
+
+ // Is this where scrolling is relative to - the line containing the caret?
+ // Or is the first visible line??? Try first visible line.
+// int currentLineLineNo1 = (int)::SendMessage(hWnd, EM_LINEFROMCHAR, -1, 0L);
+
+ int currentLineLineNo = (int)::SendMessage(hWnd, EM_GETFIRSTVISIBLELINE, 0, 0);
+
+ int specifiedLineLineNo = (int)::SendMessage(hWnd, EM_LINEFROMCHAR, pos, 0);
+
+ int linesToScroll = specifiedLineLineNo - currentLineLineNo;
+
+ if (linesToScroll != 0)
+ ::SendMessage(hWnd, EM_LINESCROLL, 0, linesToScroll);
+}
+
+long wxTextCtrl::GetLengthOfLineContainingPos(long pos) const
+{
+ return ::SendMessage(GetHwnd(), EM_LINELENGTH, pos, 0);
+}
+
+int wxTextCtrl::GetLineLength(long lineNo) const
+{
+ long pos = XYToPosition(0, lineNo);
+
+ return GetLengthOfLineContainingPos(pos);
+}
+
+wxString wxTextCtrl::GetLineText(long lineNo) const
+{
+ size_t len = (size_t)GetLineLength(lineNo) + 1;
+
+ // there must be at least enough place for the length WORD in the
+ // buffer
+ len += sizeof(WORD);
+
+ wxString str;
+ {
+ wxStringBufferLength tmp(str, len);
+ wxChar *buf = tmp;
+
+ *(WORD *)buf = (WORD)len;
+ len = (size_t)::SendMessage(GetHwnd(), EM_GETLINE, lineNo, (LPARAM)buf);
+
+#if wxUSE_RICHEDIT
+ if ( IsRich() )
+ {
+ // remove the '\r' returned by the rich edit control, the user code
+ // should never see it
+ if ( buf[len - 2] == wxT('\r') && buf[len - 1] == wxT('\n') )
+ {
+ // richedit 1.0 uses "\r\n" as line terminator, so remove "\r"
+ // here and "\n" below
+ buf[len - 2] = wxT('\n');
+ len--;
+ }
+ else if ( buf[len - 1] == wxT('\r') )
+ {
+ // richedit 2.0+ uses only "\r", replace it with "\n"
+ buf[len - 1] = wxT('\n');
+ }
+ }
+#endif // wxUSE_RICHEDIT
+
+ // remove the '\n' at the end, if any (this is how this function is
+ // supposed to work according to the docs)
+ if ( buf[len - 1] == wxT('\n') )
+ {
+ len--;
+ }
+
+ buf[len] = 0;
+ tmp.SetLength(len);
+ }
+
+ return str;
+}
+
+void wxTextCtrl::SetMaxLength(unsigned long len)
+{
+#if wxUSE_RICHEDIT
+ if ( IsRich() )
+ {
+ ::SendMessage(GetHwnd(), EM_EXLIMITTEXT, 0, len ? len : 0x7fffffff);
+ }
+ else
+#endif // wxUSE_RICHEDIT
projects / wxWidgets.git / blobdiff