Ken and all who posted,
I wanted to post what eventually worked - a combination of several items put forward.
Creating the initial Photo image with no reference, then immediately loading the image from the file.
# Start with a blank image - somehow this causes memory cleanup
$TK{'image-'.$NVP{'Id'}}=$TK{'canvas-'.$NVP{'Id'}}->Photo(-file =>
+ "" );
# Create an image object for the image file of the correct format
$TK{'image-'.$NVP{'Id'}}=$TK{'canvas-'.$NVP{'Id'}}->Photo($NVP{'Id
+'},
-file
+=> $NVP{'File'},
-format
+=> $image{'extension'});
Adding a trap for catching the closure of the popup window ...
# Create a "catch" for closing the window
$TK{'pw-'.$NVP{'Id'}}->protocol('WM_DELETE_WINDOW' => [\&CleanUpOn
+Exit, $NVP{'Id'}]);
And a subroutine to delete the images on the canvas as well as the images on exit ... using the magic delete -> delete(); thing
sub CleanUpOnExit
{
# Get the id
my $ID=shift(@_);
# Delete images on the canvas
$TK{'canvas-' . $ID}->delete("all");
# Delete the original image
(delete $TK{'image-' . $ID})->delete();
# Destroy the popup window
$TK{'pw-' . $ID}->destroy();
# Exit the Tk window
Tk::exit;
}
It no longer chews up memory and even returns memory when the images are closed.
So I wanted to say thanks.
nzsvz9 - formerly known as the mad memory monger of my own creation
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