Self
Self : Pointer
| Parameter | Type | Description | |
|---|---|---|---|
| Function result | Pointer | ← | Pointer to form object (if any) whose method is currently being executed. Otherwise Nil (->[]) if outside of context |
This command is not thread-safe, it cannot be used in preemptive code.
Compatibility Note
This command is kept only for compatibility reasons. Starting with version 12 of 4D, it is recommended to use the OBJECT Get pointer command.
Description
The Self command returns a pointer to the object whose object method is currently being executed.
Self is used to reference a variable within its own object method. It returns a valid pointer when it is called from within an object method or from within a project method that is called directly or indirectly by an object method.
If Self is called out of context, it returns a Is nil pointer pointer (->[]).
Tip: Self is useful when several objects on a form need to perform the same task, yet operate on themselves.
Note: When it is used in the context of a list box, the function returns a pointer to the list box or the column of the list box depending on the context. For more information, please refer to the Managing List Box Objects section.
Example
See the example for the RESOLVE POINTER command.