# CallbackBase1 Class (CPP)

**Header:** #include <UnigineCallback.h>


A base class for engine callbacks.


This class allows you to create your own callbacks with zero or one argument.


## CallbackBase1 Class

### Members

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## void run ( )

Executes the callback function without arguments.
## void run ( A0 a0 )

Executes the callback function with one argument
### Arguments

- *A0* **a0** - Argument of the callback function.