## GLOBALCTRLFUNC_CB (since 3.20)

Global callback for a restricted set of keys. Called only when the Ctrl+F? key combinations are pressed. It was designed to be used for internal application debugging porpoises only. Do not use it for release code.

### Callback

    void function(int c); [in C]

c: identifier of typed key. Please refer to the Keyboard Codes table for a list of possible values.

### Notes

It can only be set using IupSetFunction(name, func).

#### Lua Binding

To modify this action use the iup.SetGlobalCallback(name, func) function.

### See Also

IupSetFunction