Printing TRichViewEdit information with Nevrona RAVE

Return to index

Author

Message

Jonathan Allen

Posted: 09/21/2004 18:46:17

All,

Here is a code sample of using RAVE and TRichView components. This sample

uses a TRVReportHelper, TRichViewEdit, TRVStyle, and TRvSystem componet.

Hope this saves someone else some time!

procedure TForm1.RvSystem1Print(Sender: TObject);

var

  i : Integer;

  MF: TMetaFile;

  MFC: TMetaFileCanvas;

  R,RR: TRect;

  iPaperWidth: Integer;

  iPaperHeight: Integer;

  MyHDC : THandle;

  PageNo : Integer;

  Stream : TStream;

  Res : BOolean;

begin

  Stream := TMemoryStream.Create;

  try

    ARichViewEdit.SaveRVFToStream(Stream,False);

    Stream.Position := 0;

    AReportHelper.RichView.LoadRVFFromStream(Stream);

  finally

    Stream.Free;

  end;

  with Sender as TBaseReport do

  begin

    SetFont('Arial',12);

    YPos := 1.0;

    //Print Some Stuff before the Rich View Edit

    for i:=1 to 40 do

    begin

      PrintLeft(StringOfChar('A',i),0.5);

      CrLf;

    end;

    NewPage;

    //Print TRichViewEdit Control Contents

    MF := TMetaFile.Create;

    MyHDC := GetDC(0);

    iPaperHeight := Trunc((PageHeight-1.0) * GetDeviceCaps(MyHdc,LOGPIXELSY));

    iPaperWidth  := Trunc((PageWidth-1.0) * GetDeviceCaps(MyHdc,LOGPIXELSX));

    ReleaseDC(0,MyHDC);

    AReportHelper.Init(Self.Canvas, iPaperWidth);

    PageNo := 1;

    repeat

      if PageNo > 1 then

        Newpage;

      if AReportHelper.FormatNextPage(iPaperHeight) then

      begin

        MF.Height := iPaperHeight;

        MF.Width :=  iPaperWidth;

        MFC := TMetafileCanvas.Create(MF,0);

        try

          AReportHelper.DrawPage(PageNo,MFC,True,iPaperHeight);

        finally

          MFC.Free;

        end;

        RR := CreateRect(0.5,0.5,PageWidth-1.0,(PageHeight-1.0) );

        StretchDraw(RR,MF);

        Inc(PageNo);

      end

      else

        break;

    until False;

    // Now Print trailing code page

    YPos := 1.0;

    for i:=1 to 40 do

    begin

      PrintLeft(StringOfChar('B',i),0.5);

      CrLf;

    end;

  end;

end;