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Fill a buffer with pointers to all items
PtFileSelItem_t **PtFSAllItems(
                      PtWidget_t *widget,
                      PtFileSelItem_t **buffer );
This function fills a buffer with pointers to all items in the widget.
If buffer is NULL, the function allocates a buffer using malloc(), and terminates it with a NULL entry. It's your application's responsibility to free the buffer when it's no longer needed.
If buffer isn't NULL, the function doesn't add a NULL to the end of it.
A pointer to the buffer.
Photon
| Safety: | |
|---|---|
| Interrupt handler | No | 
| Signal handler | No | 
| Thread | No | 
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