1. An imaging device comprising: imaging means for capturing an image; moving image data generation means for generating moving image data as image data for a moving image from an image captured by the imaging means; still image data generation means for, when the moving image data generation means generates the moving image data, generating still image data as image data for a still image from an image captured by the imaging means; and display data generation means for, when the moving image data is generated, generating first display data for displaying an image corresponding to the moving image data and, when the still image data is generated, generating second display data for displaying an image representing generation of the still image data in parallel with generation of the first display data.