Is it possible to draw a BUTTON?
Jason Benjamin
hexusnexus at gmail.com
Wed Jul 27 17:51:25 EDT 2016
On Wed, 27 Jul 2016 13:18:16 -0700, huey.y.jiang wrote:
> Hi Folks,
>
> It is common to put a BUTTON on a canvas by the means of coding.
> However, in my application, I need to draw a circle on canvas, and then
> make this circle to work as if it is a button. When the circle is
> clicked, it triggers a new image to be displayed. Somebody can help?
> Thanks!
It depends on what GUI toolkit you use. Can you give more specific
information?
Since a canvas is refreshed (updated) every time the function for redraw
is called, it is as simple as changing the variable for what should be
drawn when a click event is sent to the canvas and the area hot-spot is
the same as the area of the button. Buffered drawing is similar.
--
[The Computer] was the first machine man built that assisted the power of
his brain instead of the strength of his arm. - Grace Hopper
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