Re: XForms: drawing on my canvas with the mouse

Stephen Langer (langer@cam.nist.gov)
Thu, 12 Feb 1998 14:55:06 -0500

# To subscribers of the xforms list from "Stephen Langer" <langer@cam.nist.gov> :

> # To subscribers of the xforms list from AMIT BHATNAGAR <amit@cs.dal.ca> :
>
>
> How could I get the mouse to return the x and y values when the mouse
> button is pressed, and again when it is released. I am trying to get mouse
> interaction with a line algorithm. I want the user to be able to draw a
> line with the mouse, simply by dragging the mouse.
>

Use fl_add_canvas_handler() to register callbacks for ButtonPress,
ButtonRelease, and possibly MotionNotify events.

-- Steve

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