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- // BDE32 3.x - (C) Copyright 1996 by Borland International
-
- // recupdat.c
- #include "snipit.h"
-
- static const char szTblName[] = "contacts";
- static const char szTblType[] = szPARADOX;
-
- //=====================================================================
- // Function:
- // RecordUpdate();
- //
- // Description:
- // This example shows how to update records in a table.
- //=====================================================================
- void
- RecordUpdate(void)
- {
- DBIResult rslt; // Value returned from IDAPI functions
- hDBIDb hDb; // Handle to the database
- hDBICur hCur; // Handle to the table
- pBYTE pRecBuf; // Pointer to the record buffer
- CURProps curProps; // Properties of the table
- CHAR szLastName[20]; // Last Name
- CHAR szFirstName[20]; // First Name
- CHAR szCompany[30]; // Company Name
- CHAR szPhone[16]; // Phone Number
-
- Screen("*** Updating Records ***\r\n");
-
- BREAK_IN_DEBUGGER();
-
- Screen(" Initializing IDAPI...\r\n");
- if (InitAndConnect(&hDb) != DBIERR_NONE)
- {
- Screen("\r\n*** End of Example ***");
- return;
- }
-
- Screen(" Setting the database directory...");
- rslt = DbiSetDirectory(hDb, (pCHAR) szTblDirectory);
- ChkRslt(rslt, "SetDirectory");
-
- Screen(" Opening the \"%s\" table...", szTblName);
-
- rslt = DbiOpenTable(hDb, (pCHAR) szTblName, (pCHAR) szTblType,
- NULL, NULL, NULL, dbiREADWRITE, dbiOPENSHARED,
- xltFIELD, FALSE, NULL, &hCur);
- if (ChkRslt(rslt, "OpenTable") != DBIERR_NONE)
- {
- CloseDbAndExit(&hDb);
- Screen("\r\n*** End of Example ***");
- return;
- }
-
- // Add a record.
- Screen(" \r\n Determine the size of the record and allocate a"
- " buffer to hold records...");
-
- // Allocate memory for the record buffer
- rslt = DbiGetCursorProps(hCur, &curProps);
- ChkRslt(rslt, "GetCursorProps");
-
- pRecBuf = (pBYTE) malloc(curProps.iRecBufSize);
- if (pRecBuf == NULL)
- {
- Screen(" Error - Out of memory");
- rslt = DbiCloseCursor(&hCur);
- ChkRslt(rslt, "CloseCursor");
- CloseDbAndExit(&hDb);
- Screen("\r\n*** End of Example ***");
- return;
- }
-
- // Set the data to add.
- strcpy(szLastName, "Smith");
- strcpy(szFirstName, "John");
- strcpy(szCompany, "Kauai Dive Shoppe");
- strcpy(szPhone, "(304) 113-2244");
-
- Screen(" Initialize the record buffer...");
- rslt = DbiInitRecord(hCur, pRecBuf);
- ChkRslt(rslt, "InitRecord");
-
- Screen(" Add the fields to the record buffer...");
- rslt = DbiPutField(hCur, 1, pRecBuf, (pBYTE) szLastName);
- ChkRslt(rslt, "PutField");
-
- rslt = DbiPutField(hCur, 2, pRecBuf, (pBYTE) szFirstName);
- ChkRslt(rslt, "PutField");
-
- rslt = DbiPutField(hCur, 3, pRecBuf, (pBYTE) szCompany);
- ChkRslt(rslt, "PutField");
-
- rslt = DbiPutField(hCur, 4, pRecBuf, (pBYTE) szPhone);
- ChkRslt(rslt, "PutField");
-
-
- Screen(" Add the record to the table...\r\n");
-
- rslt = DbiInsertRecord(hCur, dbiNOLOCK, pRecBuf);
- if (ChkRslt(rslt, "InsertRecord") != DBIERR_NONE)
- {
- if (rslt == DBIERR_KEYVIOL)
- {
- Screen(" Expected error - Continue...");
- }
- else
- {
- rslt = DbiCloseCursor(&hCur);
- ChkRslt(rslt, "CloseCursor");
- CloseDbAndExit(&hDb);
- Screen("\r\n*** End of Example ***");
- return;
- }
- }
-
- Screen(" Search for the value in the table...\r\n");
- rslt = DbiSetToKey(hCur, keySEARCHEQ, FALSE, 0, 0, pRecBuf);
- ChkRslt(rslt, "SetToKey");
-
- Screen(" Change the phone number of the just added record...\r\n");
-
- Screen(" Get the record from the table...");
- rslt = DbiGetNextRecord(hCur, dbiWRITELOCK, pRecBuf, NULL);
- ChkRslt(rslt, "GetNextRecord");
-
- Screen(" Change the value in the \"Phone\" field...");
- strcpy(szPhone, "(304) 222-9876");
- rslt = DbiPutField(hCur, 4, pRecBuf, (pBYTE) szPhone);
- ChkRslt(rslt, "PutField");
-
- Screen(" Write the changes to the table...");
- rslt = DbiModifyRecord(hCur, pRecBuf, TRUE);
- ChkRslt(rslt, "ModifyRecord");
-
- Screen("\r\n Delete the record which was added...");
- rslt = DbiDeleteRecord(hCur, NULL);
- ChkRslt(rslt, "DeleteRecord");
-
- free(pRecBuf);
-
- Screen(" Close the %s table...", szTblName);
- rslt = DbiCloseCursor(&hCur);
- ChkRslt(rslt, "CloseCursor");
-
- Screen(" Close the database and exit IDAPI...");
- CloseDbAndExit(&hDb);
-
- Screen("\r\n*** End of Example ***");
- }
-