Re: Loading images from a non-URL source

Frank D. Engel, Jr. Wed, 21 Jul 2004 06:26:42 -0700

So then something like this attached to a button should work? It doesn't seem to. I select a JPEG image file (I tried several different ones).

on mouseUp
  answer file "Select an image file:" as sheet
  put it into x
  if there is a file x then
    open file x
    read from file x until EOF
    put it into y
    close file x
    set the text of image "Logo" to y
  end if
end mouseUp

If I set the filename of image "Logo" to x, then the image appears, but I need to be able to take the data from a database field (and to take image data from a file and store it in the field), so I need functionality similar to the above.

What am I missing here?

On Jul 20, 2004, at 18:00, Jeanne A. E. DeVoto wrote:

At 10:51 PM +0200 7/20/2004, Klaus Major wrote:
Hi Frank,
How can I take binary image data stored in a variable (obtained programmatically, usually from a database query) and display it in an image field without first storing it to a file? I can't seem to find any information on this.
I tried this, but it doesn't seem to work:
set the fileName of image "Logo" to empty
set the imageData of image "Logo" to an_obtained_value
when using "the imagedata" you have to make sure that the "target" image has EXACTLY the same dimensions as the "source" image, or you might expereince ugly results...
But you can:
...
put a_var_with_binary_data into img 1
...
and it will resize to the correct dimensions :-)
It's also important to know that imageData and the content of an image (its text property) aren't in the same format.

The imageData is an invariant format that provides the RGB data for each pixel. The text of the image is the image's data in whatever format - PNG, GIF, JPEG, or whatever format the image is encoded in.

Normally, if you get the data from some other source, it will be in PNG, GIF, etc., so you'll use a statement like put myImageData into image "My Image" Only if you're modifying the image data yourself do you use the imageData, usually. -- jeanne a. e. devoto ~ [EMAIL PROTECTED] http://www.jaedworks.com _______________________________________________ use-revolution mailing list [EMAIL PROTECTED] http://lists.runrev.com/mailman/listinfo/use-revolution


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Re: Loading images from a non-URL source

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