L_DicomGetUserInfoCount

#include "ltdic.h"

L_INT EXT_FUNCTION L_DicomGetUserInfoCount(hPDU)

/* a DICOM Associate handle */

Returns the number of User-defined items in the specified DICOM Associate.

Parameter	Description
hPDU	A DICOM Associate handle.

Returns

The number of User-defined items in the specified DICOM Associate.

Comments

For more information about User-defined items, refer to L_DicomAddUserInfo.

Required DLLs and Libraries

LTDIC

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:	L_DicomGetTypeUserInfo, L_DicomGetLengthUserInfo, L_DicomGetDataUserInfo, L_DicomSetUserInfo, L_DicomAddUserInfo, L_DicomDelUserInfo
Topics:	Working with DICOM Associate Connections

Example

#include <windowsx.h>
.
.
.
L_VOID Test(HDICOMPDU hPDU)
{
   L_UCHAR  i;
   L_UCHAR  nType;
   L_UINT16 nLen;
   L_CHAR   szMsg[8000];
   L_CHAR L_FAR *pData=NULL;
   L_CHAR L_FAR *pTemp=NULL;
   L_CHAR szTest1[]={"Just a test\0"};
   L_CHAR szTest2[]={"a second test\0"};

   /* get current user info types, lengths, and data then display them */
   lstrcpy(szMsg, "Current user type, length, data:");
   if(L_DicomGetUserInfoCount(hPDU) > 0)
   {
      for(i = 0; i<L_DicomGetUserInfoCount(hPDU); i++)
      {
         nType = L_DicomGetTypeUserInfo(hPDU, i);
         nLen  = L_DicomGetLengthUserInfo(hPDU, i);
         pData = L_DicomGetDataUserInfo(hPDU, i);
         pTemp = (L_CHAR L_FAR*)GlobalAllocPtr(GMEM_MOVEABLE, nLen*sizeof(L_CHAR));
         memcpy(pTemp, pData, nLen);
         wsprintf(szMsg, "Type =%d\tLength=%d\nData = ", nType, nLen);
         lstrcat(szMsg, "\n");
         lstrcat(szMsg, pTemp);
         GlobalFreePtr(pTemp);
      }
   }
   else
      lstrcat(szMsg, "\nNone");
   MessageBox(NULL, szMsg, "Test", MB_OK);

   /* add a user info item */
   lstrcpy(szMsg, "Add user info item");
   L_DicomAddUserInfo(hPDU, 99, szTest1, lstrlen(szTest1));

   if(L_DicomGetUserInfoCount(hPDU) > 0)
   {
      for(i = 0; i<L_DicomGetUserInfoCount(hPDU); i++)
      {
         nType = L_DicomGetTypeUserInfo(hPDU, i);
         nLen  = L_DicomGetLengthUserInfo(hPDU, i);
         pData = L_DicomGetDataUserInfo(hPDU, i);
         pTemp = (L_CHAR L_FAR*)GlobalAllocPtr(GMEM_MOVEABLE, nLen*sizeof(L_CHAR)+1);
         memcpy(pTemp, pData, nLen);
         pTemp[nLen]='\0';
         lstrcat(szMsg, "\n");
         wsprintf(szMsg, "Type =%d\tLength=%d\nData = ", nType, nLen);
         lstrcat(szMsg, pTemp);
         GlobalFreePtr(pTemp);
      }
   }
   else
      lstrcat(szMsg, "\nNone");
   MessageBox(NULL, szMsg, "Test", MB_OK);

   /* for each user info item, change the data */
   for(i = 0; i<L_DicomGetUserInfoCount(hPDU); i++)
   {
      nType = L_DicomGetTypeUserInfo(hPDU, i);
      L_DicomSetUserInfo(hPDU, i, nType, szTest2, lstrlen(szTest2));
   }

   lstrcpy(szMsg, "Change user data");
   if(L_DicomGetUserInfoCount(hPDU) > 0)
   {
      for(i = 0; i<L_DicomGetUserInfoCount(hPDU); i++)
      {
         nType = L_DicomGetTypeUserInfo(hPDU, i);
         nLen  = L_DicomGetLengthUserInfo(hPDU, i);
         pData = L_DicomGetDataUserInfo(hPDU, i);
         pTemp = (L_CHAR L_FAR*)GlobalAllocPtr(GMEM_MOVEABLE, nLen*sizeof(L_CHAR)+1);
         memcpy(pTemp, pData, nLen);
         pTemp[nLen]='\0';
         lstrcat(szMsg, "\n");
         wsprintf(szMsg, "Type =%d\tLength=%d\nData = ", nType, nLen);
         lstrcat(szMsg, pTemp);
         GlobalFreePtr(pTemp);
      }
   }
   else
      lstrcat(szMsg, "\nNone");
   MessageBox(NULL, szMsg, "Test", MB_OK);

   /* delete the one we added */
   L_DicomDelUserInfo(hPDU, L_DicomGetUserInfoCount(hPDU) - 1);
   lstrcpy(szMsg, "Delete the added user");
   if(L_DicomGetUserInfoCount(hPDU) > 0)
   {
      for(i = 0; i<L_DicomGetUserInfoCount(hPDU); i++)
      {
         nType = L_DicomGetTypeUserInfo(hPDU, i);
         nLen  = L_DicomGetLengthUserInfo(hPDU, i);
         pData = L_DicomGetDataUserInfo(hPDU, i);
         pTemp = (L_CHAR L_FAR*)GlobalAllocPtr(GMEM_MOVEABLE, nLen*sizeof(L_CHAR)+1);
         memcpy(pTemp, pData, nLen);
         pTemp[nLen]='\0';
         lstrcat(szMsg, "\n");
         wsprintf(szMsg, "Type =%d\tLength=%d\nData = ", nType, nLen);
         lstrcat(szMsg, pTemp);
         GlobalFreePtr(pTemp);
      }
   }
   else
      lstrcat(szMsg, "\nNone");
   MessageBox(NULL, szMsg, "Test", MB_OK);
}