IWiaDrvItem::GetDeviceSpecContext method (wiamindr_lh.h)
The IWiaDrvItem::GetDeviceSpecContext method gets a device-specific context.
Syntax
HRESULT GetDeviceSpecContext(
BYTE **__MIDL__IWiaDrvItem0001
);
Parameters
__MIDL__IWiaDrvItem0001
ppSpecContext [out, optional]
Points to a memory location that will receive the address of a device-specific context.
Return value
If the method succeeds, it stores a pointer to the device-specific context in ppSpecContext and returns S_OK. If the method fails because the parameter ppSpecContext specifies an invalid pointer, the method returns E_INVALIDARG. If the method fails for another reason, it returns a standard COM error code.
Remarks
Minidrivers typically use this method to obtain a pointer to a device-specific context associated with an IWiaDrvItem item. The device-specific context is associated with the item when the item is created using the driver services library function wiasCreateDrvItem.
Requirements
| Requirement | Value |
|---|---|
| Target Platform | Desktop |
| Header | wiamindr_lh.h (include Wiamindr.h) |