Images in 'OLE object' field type as 'bitmap image'. How can I manipulate in my delphi application

From: Andre Mota (amota_pe_at_hotlink.com.br)
Date: 06/20/04

  • Next message: john hutchings: "Filtering with TClientDataSet connected to ADO"
    Date: Sun, 20 Jun 2004 14:53:03 -0300
    
    

    Hi everybody...

    I have the following problem: In a ms access table, whose field is of the
    type ' OLE Object', I have been recording some objects ole 'Bitmap image'.
    Those images are seen in some 'ms access forms'. In my Delphi application, I
    must save images in that table, not in the binary form, but as objects ole
    (OLEClassName = Paint.Picture). This way, I can continue sells those images
    in the ms access forms.

    Opening the table in my delphi application, I have a TBlobField with the
    images. How can I read the content of those fields for TBitmap objects?. If
    I try to read the content of TBlobField for a TDBImage or TImage objects, I
    obtain the following error: Bitmap image is not valid.
    How I can make the inverse way? How can I record TBitmap objects in
    TBlobField as OLE objects - Image of Bitmap - to continue visualizing them
    in the ms access forms?


  • Next message: john hutchings: "Filtering with TClientDataSet connected to ADO"

    Relevant Pages

    • Re: recovery of the pixel after capGrabFrame
      ... without recording the images in BitMap on the disc ...
      (microsoft.public.vc.mfc)
    • Re: Very Large Bitmaps
      ... Find great Windows Forms articles in Windows Forms Tips and Tricks ... Answer those GDI+ questions with the GDI+ FAQ ... > spaces and 16-bit images etc without the horrible ambiguity and missing ... A bitmap is loaded and expanded to an uncompressed raster so 18000 * ...
      (microsoft.public.dotnet.framework.drawing)
    • Re: Finding Mona
      ... anomolies. ... We can see that even the tiniest bitmap image sticks out like a sore thumb. ... I made a specific hypothesis based on the nature of bitmap images. ... The techniques I listed included statistics. ...
      (talk.origins)
    • Re: Did you know
      ... over bitmap formats if the number of information points are less than ... the svg file in one icon. ... Now try putting that PNG icon at something approaching a usable resolution. ... It doesn't scale better than bitmap images. ...
      (comp.sys.mac.advocacy)
    • Re: Did you know
      ... over bitmap formats if the number of information points are less than in the bitmap. ... Imagine the difference when we have to put four different version of the svg file in one icon. ... Vector graphics scale better than raster graphics, so you don't need as many copies to handle the same range. ... Some kind of art suffers, but that can be solved by having several vector images for certain key sizes. ...
      (comp.sys.mac.advocacy)