I have a form used to process image files.  The active image is displayed along 
with a listbox of previously processed image files from a table.  I want to 
allow the user to temporarily display any image from the list to verify that 
the active image is unique and not a duplicate of one already processed. 
 
I am using the mouse down event to display the temporary image and the mouse up 
event to redisplay to the active one.  This gives the functionality I want but 
when I select a new item from the list, I need to click it twice in order to 
display the proper image.  Apparently the listbox.value property is not updated 
until the mouse up event.  My code reads the value property during the mouse 
down event.  This explains the need for a double select when there is a 
selection change.
 
My intent in choosing the select and hold approach is to prevent confusion 
about which image is being viewed.  The only time a non-active image is 
displayed is when the mouse button is held down.
 
Does someone know of a way to have the listbox approach always work on the 
first click or have another approach to suggest?
 
TIA - Joe


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