Dephi selection area

I need to give users the ability to select some area of a picture inside my Delphi application (i.e. draw selection area on the picture)

What is the best way to do it ?
oferlllAsked:
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jimyXCommented:
aikimarkCommented:
Generally, you record the x,y coordinates in the mousedown and mouseup events.  These constitute two opposite corners of a rectangle.

You can enhance the UI by 'overlaying' the current rectangle over the picture in the mousemove event (if the left mouse button is depressed, of course)
rfwoolfCommented:
Great components that were commercial but are now freeware:
www.hicomponents.com
You just drop a TImageEnView on your form, change the MouseInteract properties and then you can refer to the selection by saying e.g.
//To Crop to the selection
ImageEnView1.Proc.CropSel(true);
//To copy the selection to another bitmap for processing
ImageEnView1.CopyToBitmap()
..etc

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Dagan HooverDeveloperCommented:
@rfwoolf: Me likey
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