Исключения в билдере. Головная боль!

procedure TCustomRichEdit.Print(const Caption: string);
var
  Range: TFormatRange;
  LastChar, MaxLen, LogX, LogY, OldMap: Integer;
  SaveRect: TRect;
  TextLen: TGetTextLengthEx;
{$IF DEFINED(CLR)}
  Buffer: IntPtr;
{$IFEND}
begin
{$IF NOT DEFINED(CLR)}
  FillChar(Range, SizeOf(TFormatRange), 0);
{$IFEND}
  with Printer, Range do
  begin
    Title := Caption;
    BeginDoc;
    hdc := Handle;
    hdcTarget := hdc;
    LogX := GetDeviceCaps(Handle, LOGPIXELSX);
    LogY := GetDeviceCaps(Handle, LOGPIXELSY);
    if IsRectEmpty(PageRect) then
    begin
      rc.right := PageWidth * 1440 div LogX;
      rc.bottom := PageHeight * 1440 div LogY;
    end
    else begin
      rc.left := PageRect.Left * 1440 div LogX;
      rc.top := PageRect.Top * 1440 div LogY;
      rc.right := PageRect.Right * 1440 div LogX;
      rc.bottom := PageRect.Bottom * 1440 div LogY;
    end;
    rcPage := rc;
    SaveRect := rc;
    LastChar := 0;
 
    // retrieve number of characters in rich edit control
    TextLen.Flags := GTL_NUMCHARS;
{$IF DEFINED(CLR)}
    if Marshal.SystemDefaultCharSize = 1 then
      TextLen.CodePage := CP_ACP // Active ANSI code page
    else
      TextLen.CodePage := 1200;  // Unicode
    Buffer := Marshal.AllocHGlobal(Marshal.SizeOf(TypeOf(TGetTextLengthEx)));
    try
      Marshal.StructureToPtr(TObject(TextLen), Buffer, False);
      MaxLen := SendMessage(Self.Handle, EM_GETTEXTLENGTHEX, LPARAM(Buffer), 0);
    finally
      Marshal.FreeHGlobal(Buffer);
    end;
{$ELSE}
    TextLen.CodePage := 1200;  // Unicode
    MaxLen := SendMessage(Self.Handle, EM_GETTEXTLENGTHEX, LPARAM(@TextLen), 0);
{$IFEND}
 
    chrg.cpMax := -1;
    // ensure printer DC is in text map mode
    OldMap := SetMapMode(hdc, MM_TEXT);
    SendMessage(Self.Handle, EM_FORMATRANGE, 0, 0);    // flush buffer
    try
      repeat
        rc := SaveRect;
        chrg.cpMin := LastChar;
        LastChar := SendStructMessage(Self.Handle, EM_FORMATRANGE, 1, Range);
        if (LastChar < MaxLen) and (LastChar <> -1) then
          NewPage;
      until (LastChar >= MaxLen) or (LastChar = -1);
      EndDoc;
    finally
      SendMessage(Self.Handle, EM_FORMATRANGE, 0, 0);  // flush buffer
      SetMapMode(hdc, OldMap);       // restore previous map mode
    end;
  end;
end;

LastChar := SendStructMessage(Self.Handle, EM_FORMATRANGE, 1, Range);