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Resolved Show Blob-Picture in Datawindow

  1. How-to
0
Votes
Undo
  1. O E
    O E
  2. PowerBuilder
  3. Tuesday, 16 June 2020 11:25 AM UTC

Hello,

how can i show a blob as picture? I saved a the blob in the database. I can select it per selectblob. I can show it in a window using Picture- or Inkpicture-Control. I can't show it in datawindow. I've tried TableBlob- and InkPicture-Control.

There's always a SQL-Select-Error State: 37000. Im using SQL-Anywhere 17. In database I've tried with varchar, binary and long binary.

Can someone help me out?

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Responses (3)
Roland Smith
Roland Smith Accepted Answer Pending Moderation
  1. Thursday, 18 June 2020 16:51 PM UTC
  2. PowerBuilder
  3. # 1

What version of PowerBuilder? Newer versions have a 'Database Binary Object' control on the DataWindow that will autmatically do a SELECTBLOB and display it as a picture.

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Chris Pollach @Appeon
Chris Pollach @Appeon Accepted Answer Pending Moderation
  1. Tuesday, 16 June 2020 21:10 PM UTC
  2. PowerBuilder
  3. # 2

Hi O.E.;

   Since you are using "SQL-Anywhere 17" ... did you set the appropriate BLOB sizes in the DBMS connection?

   If you did not, the Blob data streams will terminate at 32K.  For example:

SQLCA.DBParm = ConnectString='XXXXXX',PBmaxblobsize='10000000',PBmaxtextsize='10000000'"

  Note: You may also modify the PBODBnnn.INI (where nnn= PB releease #) file for the above entries as well when using ODBC to connect. Please check your PB Help for more information.

Regards ... Chris

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Kevin Ridley
Kevin Ridley Accepted Answer Pending Moderation
  1. Tuesday, 16 June 2020 13:30 PM UTC
  2. PowerBuilder
  3. # 3

Try writing the blob data to a file and displaying the file.

Comment
O E
  1. O E
  2. Tuesday, 16 June 2020 14:21 PM UTC
Thanks for your reply.

I've got an solution with files on disk, but this isn't an option in this case.

In this case I need to show the picture without saving it to disk.
  1. Helpful
Kevin Ridley
  1. Kevin Ridley
  2. Thursday, 18 June 2020 16:08 PM UTC
I don't know your requirements, but in the past I've deleted the file after displaying it.
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