LWia::FreeItem

Summary

Frees the items enumerated by the LWia::EnumChildItems function.

Syntax

#include "ltwrappr.h"

virtual L_INT LWia::FreeItem(pItem)

Parameters

L_VOID * pItem

Pointer to a type IWiaItem or IWiaItem2 object(IWiaItem if using WIA Version 1.0, IWiaItem2 if using WIA Version 2.0), that was retrieved through the LWia::EnumItemsCallBack when the device's child items were enumerated.

Returns

Value	Meaning
SUCCESS	The function was successful.
<	An error occurred. Refer to Return Codes.

Comments

This feature is available in LEADTOOLS version 16 or higher.

It is the user's responsibility to free the items enumerated by the LWia::EnumChildItems function through the LWia::EnumItemsCallBack function. To do so, call the LWia::FreeItem function for each item enumerated through the callback mentioned above.

Note: This function is called internally by LWia::AcquireSimple.

Required DLLs and Libraries

• LTWIA
• For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application.

See Also

Functions

• LWia::EnumChildItems
• LWia::GetRootItem
• LWia::EnumItemsCallBack
• LWia::EnumDevices
• LWia::InitSession
• LWia::EndSession
• Class Members

Topics

• Managing WIA Sources
• WIA Functionality: Property Functions
• WIA Functionality: Callbacks

Example

For an example, refer to LWia::GetRootItem.