# DM_LISTGETDATASIZE

The DM_LISTGETDATASIZE message is sent to the dialog manager to retrieve the size of the data associated with an item in a DI_COMBOBOX or DI_LISTBOX list.

### Param1

The ID of the dialog item for which the item data is retrieved.

### Param2

Index of the item for which the data is retrieved.

### Return

Size of the data value the plugin has associated with the item using DM_LISTSETDATA messages.

### Controls

Control | Description
--- | ---
DI_LISTBOX | list
DI_COMBOBOX | combined list

### Remarks

See also:
DialogEx, DM_LISTSETDATA DM_LISTGETDATA