Do you mean
"How do I take the color from a point on the screen? The point can be in the form, or in a panel."
If you do, then there is a complete article on color pickers including an eyedropper here:
Color Picker with Color Wheel and Eye Dropper[
^]
or this site has a complete program which just does the point - to - color conversion.
Access via Google cache because the page is down...[
^]
If this isn't what you mean, either try to explain more clearly, or find a site in your native language!
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