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 -- https://mail.python.org/mailman/listinfo/python-list
