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05.13.2008 at 05:26AM PDT, ID: 23397428
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9.9

I need a help to display imagen in my dbgrid

Asked by hidrau in Delphi Programming

Hello Guys

I have a table with two fields

Image_cod   = The code of image
Image_blob  = The image jpg

I have 1000 image recored in my table, they are Jpeg image recorded.
I would like to display my images in my dbgrid, I have a component named wwdbgrid from infopower, but unfortunately it only work with bitmap and all images are jpeg.
I could create a dbgrid only displaying the code so that the user could navigator and the image could be displayed in a image, as you can see, I posted the code that I use to display the image in one image, but now, I need to show my pictures in a dbgrid, each picture will display in the 130 x 130.

Is it possible?
ThanksStart Free Trial 
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function JpegStartsInBlob
         (PicField:TBlobField):integer;
var
 bS     : TadoBlobStream;
 buffer : Word;
 hx     : string;
begin
 Result := -1;
 bS := TadoBlobStream.Create(PicField, bmRead);
 try
  while (Result = -1) and
        (bS.Position + 1 < bS.Size) do
  begin
   bS.ReadBuffer(buffer, 1);
   hx:=IntToHex(buffer, 2);
   if hx = 'FF' then begin
     bS.ReadBuffer(buffer, 1);
     hx:=IntToHex(buffer, 2);
     if hx = 'D8' then Result := bS.Position - 2
     else if hx = 'FF' then
      	bS.Position := bS.Position-1;
   end; //if
  end; //while
 finally
  bS.Free
 end;  //try
end;
 
 
var
  bS  : TadoBlobStream;
  Pic : TJpegImage;
begin
  If QcadpictIM_ARQ.IsNull Then
     Begin
       Exit;
     End ;
 
  bS := TadoBlobStream.Create(TBlobField(Qcadpict.FieldByName('IM_ARQ')), bmRead);
  try
    bS.Seek(JpegStartsInBlob(TBlobField(Qcadpict.FieldByName('IM_ARQ'))),
            soFromBeginning);
    Pic:=TJpegImage.Create;
    try
     Pic.LoadFromStream(bS);
     fcImager1.Picture.Graphic := Pic;
    finally
     Pic.Free;
    end;
  finally
    bS.Free
  end;
[+][-]05.14.2008 at 01:29AM PDT, ID: 21562068

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About this solution

Zone: Delphi Programming
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Solution Provided By: TheRealLoki
Participating Experts: 1
Solution Grade: A
 
 
[+][-]05.14.2008 at 01:46AM PDT, ID: 21562150

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