Solved

Rave print Image (2)

Posted on 2011-03-16
4
581 Views
Last Modified: 2012-05-11
the code below is functional, but -
can I replace

this line :   GraphicFieldToBitmap( ReportTableGraphic  , Bitmap);  

with      .....  ReportTable.FieldbyName('Graphic').as ???  ..... code  
procedure TForm1.RavePrintDBBitmap ( XPOS, YPos , Xsize, YSize : Real ; AReport : TBasereport );
var  Bitmap              : TBitmap;
     TableGraphicField   : TGraphicField;
begin


        // TableGraphicField := ;

        Bitmap := TBitmap.Create;
        try

          GraphicFieldToBitmap( ReportTableGraphic  , Bitmap);
          AReport.PrintBitmapRect(XPos,YPos,XPos + Xsize, YPos + YSize,Bitmap);
        finally
          Bitmap.Free;
        end;

end;

Open in new window

0
Comment
Question by:BdLm
  • 2
4 Comments
 
LVL 32

Expert Comment

by:ewangoya
ID: 35150521

No you cant

There is no TField property that will convert binary data to Image data

You have to convert the data properly to a Graphic object
0
 
LVL 8

Author Comment

by:BdLm
ID: 35150549

the issue I have - the name of the field will change for different table types ......  any other solution
0
 
LVL 32

Assisted Solution

by:ewangoya
ewangoya earned 62 total points
ID: 35150975
you could use a stream to first get the field data then save it to a bitmap

var
  F: TField;
  Bitmap  : TBitmap;
  Stream: TMemoryStream;
begin
   F := ReportTable.FieldbyName(YourFieldName);
   Stream := TmemoryStream.Create;
   try
       TBlobField(F).SaveToStream(Stream);
        Bitmap := TBitmap.Create;
        try
          Stream.Seek(0, soFromBeginning);
          Bitmap.LoadFromStream(Stream);
          AReport.PrintBitmapRect(XPos,YPos,XPos + Xsize, YPos + YSize,Bitmap);
        finally
          Bitmap.Free;
        end;
    finally
       FreeAndNil(Stream);
   end;
0
 
LVL 24

Accepted Solution

by:
jimyX earned 63 total points
ID: 35151002
You can cast the field as follows:
procedure TForm1.RavePrintDBBitmap ( XPOS, YPos , Xsize, YSize : Real ; AReport : TBasereport );
var  Bitmap              : TBitmap;
     TableGraphicField   : TGraphicField;
begin
        // TableGraphicField := ;
        Bitmap := TBitmap.Create;
        try
          //GraphicFieldToBitmap( ReportTableGraphic  , Bitmap);
          GraphicFieldToBitmap(TBlobField(ReportTable.FieldbyName('Graphic')), Bitmap);
          AReport.PrintBitmapRect(XPos,YPos,XPos + Xsize, YPos + YSize,Bitmap);
        finally
          Bitmap.Free;
        end;
end;

Open in new window

0

Featured Post

Free Tool: IP Lookup

Get more info about an IP address or domain name, such as organization, abuse contacts and geolocation.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
how to center only a line in richedit? 4 61
HTML text in the body of an email (delphi code) 12 172
creating threads in delphi 1 136
TEMBEDDEDWB how can i change its user agent ? 8 70
The uses clause is one of those things that just tends to grow and grow. Most of the time this is in the main form, as it's from this form that all others are called. If you have a big application (including many forms), the uses clause in the in…
In this tutorial I will show you how to use the Windows Speech API in Delphi. I will only cover basic functions such as text to speech and controlling the speed of the speech. SAPI Installation First you need to install the SAPI type library, th…
Email security requires an ever evolving service that stays up to date with counter-evolving threats. The Email Laundry perform Research and Development to ensure their email security service evolves faster than cyber criminals. We apply our Threat…
Although Jacob Bernoulli (1654-1705) has been credited as the creator of "Binomial Distribution Table", Gottfried Leibniz (1646-1716) did his dissertation on the subject in 1666; Leibniz you may recall is the co-inventor of "Calculus" and beat Isaac…

830 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question