Image processing apparatus and method of controlling image processing apparatus

The invention provides an image processing apparatus and a method of controlling the image processing apparatus. The image processing apparatus includes a display for displaying operational information for executing image processing, an operation unit for giving an input instruction in association with a display region appearing on the display, and a controller for controlling the display in accordance with the input instruction on the operation unit. The controller is configured to determine whether an input instruction of a flick operation is given through the operation unit in association with a prescribed display region appearing on the display. If it is determined that the input instruction of the flick operation is given, the controller is configured to enlarge a range of the prescribed display region in which the input instruction is allowed, and to display the enlarged display region on the display.