What is the Name of a Casper movie with widower father and his daughter?

The movie you are referring to is called "Casper" (1995). In the movie, a widower father named Dr. James Harvey moves into a haunted mansion with his teenage daughter Kat. They befriend a mischievous ghost named Casper who resides in the house. Throughout the movie, they try to help Casper find peace and move on to the afterlife.