#include "BiTwain.h"
int CALLBACK GetCapabilityOneValue(DWORD dwCap, int iMsg, LPSTR szValue, DWORD cbBuf, LPDWORD pcbNeeded , LPDWORD pcbReturned)
Description
This function retrieves the value of the capability. You should use this function if the capability type is TWON_ONEVALUE. If cbBuf is too small, the pcbReturned will be 0 and pcbNeeded will contain the bytes required to store the value of capability.
Parameters
|
DWORD |
dwCap |
Capability ID. For example CAP_FEEDERENABLED. |
|
Int |
IMsg |
MSG_GET, MSG_GETCURRENT or MSG_GETDEFAULT |
|
LPSTR |
szValue |
This parameter stores the value of capability as text. |
|
DWORD |
cbBuf |
Length in bytes of szValue |
|
LPDWORD |
pcbNeeded |
Legth in bytes of szValue required. |
|
LPDWORD |
pcbReturned |
Length in bytes of text returned. |
Return values
Returns TW_OK on success, otherwise the error code.
Requirements
Header : Declared in BiTwain.h; include BiTwain.h.
Library : Use BiTwain.lib.
DLLs : BiTwain.dll.