References ▼
#include "ltwrappr.h"
virtual L_INT LWia::SetPropertyLong(pItem, pszID, uID, lValue)
Sets the Long value for any WIA property of the following types: VT_I1, VT_UI1, VT_I2, VT_UI2, VT_I4, VT_UI4, VT_INT, VT_UINT, VT_R4 and VT_R8.
Valid pointer to a type IWiaItem (WIA Version 1.0) or IWiaItem2 (WIA Version 2.0) object, representing the item that is having the property.
Retrieve this parameter by either calling the LWia::GetRootItem function to get a pointer to the device's root item, or by enumerating the child items of the device by calling LWia::EnumChildItems.
String pointer containing the equivalent property ID string for the WIA property ID (see example below):
| Property ID | Property ID Equivalent String |
|---|---|
| WIA_IPA_TYMED | WIA_IPA_TYMED_STR or "Media Type" |
| WIA_IPA_DEPTH | WIA_IPA_DEPTH_STR or "Bits Per Pixel" |
If this parameter is NULL, the WIA toolkit will use the ID passed through the uID parameter; otherwise, the pszID parameter will be used regardless of whether you pass a valid property ID through the uID parameter.
The property ID of the property.
The uID parameter is required only if the pszID parameter is NULL. If the pszID parameter is not NULL, you can pass 0 for uID.
Variable containing the Long value needed for the specified property ID and for the specified item.
| Value | Meaning |
|---|---|
| SUCCESS | The function was successful. |
| < 1 | An error occurred. Refer to Return Codes. |
This feature is available in LEADTOOLS version 16 or higher.
Call [LWia:SetPropertyLong to set the Long value for any WIA property of the types mentioned above (WIA_DPS_DOCUMENT_HANDLING_SELECT, WIA_IPA_TYMED, etc.)
To customize the Image Data Type property (WIA_IPA_DATATYPE), some drivers using WIA 2.0 require the WIA_IPS_CUR_INTENT property value to be set to WIA_INTENT_NONE.
Required DLLs and Libraries
For an example, refer to LWia::GetPropertyLong.