monitor a position on screen and display message when it changes

[jerryrig]

hey there .... i want to constantly monitor a position on screen ...( lower left ) ....and i would like to show a message when any change occurs to that portion ...

there will be a number 4 in lower left part of screen ..... in chrome .. if that number changed to 3 or 2 or 1 ..... i want to show a message to alert me .....

thanks in advance ............

[mikeyww]

A possibly simple way could be to find a pixel color that changes when the number changes. You could then use PixelGetColor in a SetTimer routine.

[jerryrig]

i thought about pixel color and image color ...
if that screen is hidden .. both fails right

[mikeyww]

You are correct!

If your window has controls that change at those times, you could use an AHK "Control" command to detect the change-- but that might not be the case in your window. Running Window Spy will show you window titles as well as control names within the window.

For a Web browser, you may be able to use the Chrome.ahk library or JavaScript to find what you need. Examples are available on the forum (not my expertise!).