Canvas

canvas [class]

  :super   xwindow 

  :slots 		 (topleft bottomright) 

Canvas is a xwindow to interact with figures or images. Currently, only the region selection capability has been implemented. At the buttonPress event, the canvas begins to draw a rectangle with the topleft corner at the pressed position and bottomright corner at the current pointer. ButtonRelease causes the notify-method to be sent to the notify-object. Use Xdrawable's methods to draw figures or images in the canvas.