Re: Comparing pictures

donJ <[email protected]> Fri, 16 Mar 2018 15:59:04 -0600
Newsgroups gmane.comp.lang.realbasic.user
Message-ID <[email protected]>
On 03/16/2018 10:42 AM, Jean-Luc Arnaud wrote:
> Hi all,
>
> I'm used to drawing icons in Listbox cells.
>
> I need to compare these icons with pictures, in order to determine 
> what action should fire when clicked.
>
> I know coordinates of each icon in the cell.
>
> 1) Is the RGBSurface and Pixel comparison a good way?
>
> 2) How to get an RGBSurface of a cell area in the CellClick event? I 
> can't figure out how to get a Graphics object of the area and then a 
> RGBSurface.
>
> All suggestion welcome, including MBS plugins use.
>
> TIA for your help.
>
Hi Jean-Luc,
As I recall, RGBSurface is pretty slow. As you draw the icon, could you 
put an identifier in a cell tag or an array and check that instead of 
reading the icon directly? Just a thought.

Don Jungk