There is no control that can be used to display the checkbox in crystral report but you can still display using some character and a title tweak on it. To display the checkbox in Crystal Report follow the following step.

1. Create New Formula field
2. Use chr(254) for true and chr(168) for false

IF {isTrue} THEN

chr(254)

ELSE

chr(168)

4. Put this on the page and change the font (right click -> Format Object) , under the font tab select Wingdings

5. Preview the report, you should be able to see the checkbox