bobwarren at howsoft.com
Thu Mar 23 14:44:28 CST 2006
>> Dear All,
>> Suppose I have 2 cards in a stack and I am moving the mouse over the top
>> card (naturally). I want to know what colour is under the mouse pointer
>> in a corresponding position on the 2nd card which is hidden underneath.
>> I have tried, but so far without success. Any ideas anyone?
>Here's something I would try (I don't have the time right now though) :
>- make a screenshot of the card underneath so that in can be imported
>inside an image object (hidden if necessary)
>- get the mouse location (x,y coordinates)
>- then compute the pixel value of the image using the imagedata >property
I have little doubt that the method would work, even without trying it.
I also thought of using imagedata, but I was hoping for a less
cumbersome solution. It's the "compute" bit that might take up a bit of
CP time, especially if some mad hatter like me makes the mouse go
whizzing around the screen! But I see no other alternative at the
moment, and after all, the proof of the pudding is in the eating, so
I'll give it a try in practice.
Thanks again, and also to Richard and (wide-awake) Klaus!
Regards to all,
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