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canvas.Circle defines a circle shape filled by the specified colour. You may also set a StrokeWidth and therefore a different StrokeColor as shown in this example.

The circle will fill the space specified by calling Resize() or by the layout it is controlled by. As the example sets the circle as the window content it will resize to fill the window, within a basic padding (controlled by the theme).

package main

import (


func main() {
	myApp := app.New()
	w := myApp.NewWindow("Circle")

	circle := canvas.NewCircle(color.White)
	circle.StrokeColor = color.Gray{0x99}
	circle.StrokeWidth = 5

	w.Resize(fyne.NewSize(100, 100))

All these have been basic types that can be rendered by our driver with no additional information. Next we will look at more complex types starting with Image.