+bool wxTextCtrl::IsModified() const
+{
+ return SendMessage(GetHwnd(), EM_GETMODIFY, 0, 0) != 0;
+}
+
+// Makes 'unmodified'
+void wxTextCtrl::DiscardEdits()
+{
+ SendMessage(GetHwnd(), EM_SETMODIFY, FALSE, 0L);
+}
+
+int wxTextCtrl::GetNumberOfLines() const
+{
+ return (int)SendMessage(GetHwnd(), EM_GETLINECOUNT, (WPARAM)0, (LPARAM)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, (WPARAM)y, (LPARAM)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, (LPARAM)pos);
+ }
+ else
+#endif // wxUSE_RICHEDIT
+ {
+ lineNo = SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)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, (WPARAM)lineNo, (LPARAM)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;
+}
+
+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, (WPARAM)-1, (LPARAM)0L);
+
+ int currentLineLineNo = (int)SendMessage(hWnd, EM_GETFIRSTVISIBLELINE, (WPARAM)0, (LPARAM)0L);
+
+ int specifiedLineLineNo = (int)SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)pos, (LPARAM)0L);
+
+ int linesToScroll = specifiedLineLineNo - currentLineLineNo;
+
+ if (linesToScroll != 0)
+ (void)SendMessage(hWnd, EM_LINESCROLL, (WPARAM)0, (LPARAM)linesToScroll);
+}
+
+long wxTextCtrl::GetLengthOfLineContainingPos(long pos) const
+{
+ return ::SendMessage(GetHwnd(), EM_LINELENGTH, (WPARAM)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;
+ wxChar *buf = str.GetWriteBuf(len);
+
+ *(WORD *)buf = (WORD)len;
+ len = (size_t)::SendMessage(GetHwnd(), EM_GETLINE, lineNo, (LPARAM)buf);
+ buf[len] = 0;
+
+ str.UngetWriteBuf(len);
+
+ return str;
+}
+
+void wxTextCtrl::SetMaxLength(unsigned long len)
+{
+ ::SendMessage(GetHwnd(), EM_LIMITTEXT, len, 0);
+}
+
+// ----------------------------------------------------------------------------
+// Undo/redo
+// ----------------------------------------------------------------------------
+
+void wxTextCtrl::Undo()
+{
+ if (CanUndo())
+ {
+ ::SendMessage(GetHwnd(), EM_UNDO, 0, 0);
+ }
+}
+
+void wxTextCtrl::Redo()
projects / wxWidgets.git / blobdiff