#include "BiTwain.h"
int CALLBACK GetCapabilityEnum(DWORD dwCap, int iMsg, double* pdValue, LPDWORD dwCurIdx, LPDWORD dwDefIdx, DWORD cbBuf, LPDWORD pcbNeeded , LPDWORD pcbReturned)
Description
This function retrieves the values of the capability. You should use this function if the capability container type is TWON_ENUMERATION. If cbBuf is too small, the pcbReturned will be 0 and pcbNeeded will contain the number of valus in the array.
Parameters
|
DWORD |
dwCap |
Capability ID. For example ICAP_XRESOLUTION. |
|
Int |
IMsg |
MSG_GET, MSG_GETCURRENT or MSG_GETDEFAULT |
|
LPDWORD |
dwCurIdx |
The index of the current value in the enumeration. |
|
LPDWORD |
dwDefIdx |
The indef of the default value in the enumeration. |
|
double* |
pdValue |
This parameter stores the values of capability array as doubles |
|
DWORD |
cbBuf |
Length of the pValue. |
|
LPDWORD |
pcbNeeded |
Number of values in the array. |
|
LPDWORD |
pcbReturned |
Number of values in the pdValues 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.