Selects an area on the image.
- x
- A double value which represents the x (horizontal) coordinate of the rectangular area of the image to select.
- y
- A double value which represents the y (vertical) coordinate of the rectangular area of the image to select.
- width
- A double value which represents the width of the rectangular area of the image to select.
- height
- A double value which represents the height of the rectangular area of the image to select.