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DBClearOrderCondition Function (RT)

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DbCopyXStruct Function (RT)

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DbDelete Function (RT)

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DbDriver Function (RT)

DbEval Function (RT)

DBF Function (RT)

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DBFileCopy Function (RT)

DbFilter Function (RT)

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DbGoBottom Function (RT)

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DbLocate Function (RT)

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DbMemoField Function (RT)

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DbScope Function (RT)

DbSeek Function (RT)

DbSelect Function (RT)

DbSelectArea Function (RT)

DbSetDriver Function (RT)

DbSetFilter Function (RT)

DbSetFound Function (RT)

DbSetIndex Function (RT)

DbSetOrder Function (RT)

DbSetOrderCondition Function (RT)

DbSetRelation Function (RT)

DbSetScope Function (RT)

DbSetSelect Function (RT)

DbSkip Function (RT)

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DbStruct Function (RT)

DbSymSelect Function (RT)

DbTotal Function (RT)

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Default Function (RT)

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Descend Function (RT)

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DirChange Function (RT)

Directory Function (RT)

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EmptyField Function (RT)

EmptyPSZ Function (RT)

EmptyRecord Function (RT)

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EnableArrayIndexCheck Function (RT)

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EnforceNumeric Function (RT)

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Eof Function (RT)

ErrorBlock Function (RT)

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ErrorSys Function (RT)

Eval Function (RT)

Evaluate Function (RT)

ExecScript Function (RT)

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FieldGet Function (RT)

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VoDbClearLocate Function (RT)

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VoDbClearScope Function (RT)

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VoDbCloseArea Function (RT)

VoDbCommit Function (RT)

VoDbCommitAll Function (RT)

VoDbContinue Function (RT)

VoDbCreate Function (RT)

VoDbDelete Function (RT)

VoDbDeleted Function (RT)

VoDbEof Function (RT)

VoDbEval Function (RT)

VoDbFieldGet Function (RT)

VoDbFieldGetBytes Function (RT)

VoDbFieldInfo Function (RT)

VoDbFieldPut Function (RT)

VoDbFieldPutBytes Function (RT)

VoDbFileGet Function (RT)

VoDbFilePut Function (RT)

VoDbFilter Function (RT)

VoDbFlock Function (RT)

VoDbFound Function (RT)

VoDbGetScope Function (RT)

VoDbGetSelect Function (RT)

VoDbGoBottom Function (RT)

VoDbGoto Function (RT)

VoDbGoTop Function (RT)

VoDbInfo Function (RT)

VoDbJoinAppend Function (RT)

VoDbLastRec Function (RT)

VoDbLocate Function (RT)

VoDbMemoExt Function (RT)

VoDbOrdBagExt Function (RT)

VoDbOrdCondSet Function (RT)

VoDbOrdCreate Function (RT)

VoDbOrdDestroy Function (RT)

VoDbOrderInfo Function (RT)

VoDbOrdListAdd Function (RT)

VoDbOrdListClear Function (RT)

VoDbOrdListRebuild Function (RT)

VoDbOrdSetFocus Function (RT)

VoDbPack Function (RT)

VoDbRddCount Function (RT)

VoDbRddInfo Function (RT)

VoDbRddList Function (RT)

VoDbRddName Function (RT)

VoDbRddSetDefault Function (RT)

VoDbRecall Function (RT)

VoDbRecno Function (RT)

VoDbRecordGet Function (RT)

VoDbRecordInfo Function (RT)

VoDbRecordPut Function (RT)

VoDbRelation Function (RT)

VoDbRlock Function (RT)

VoDbRSelect Function (RT)

VoDbSeek Function (RT)

VoDbSelect Function (RT)

VoDbSetFilter Function (RT)

VoDbSetFound Function (RT)

VoDbSetLocate Function (RT)

VoDbSetRelation Function (RT)

VoDbSetScope Function (RT)

VoDbSetSelect Function (RT)

VoDbSkip Function (RT)

VoDbSkipScope Function (RT)

VoDbSort Function (RT)

VoDbSymSelect Function (RT)

VoDbTrans Function (RT)

VoDbTransRec Function (RT)

VoDbUnlock Function (RT)

VoDbUnLockAll Function (RT)

VoDbUseArea Function (RT)

VoDbZap Function (RT)

XSharpLoadLibrary Function (RT)

Year Function (RT)

VoDbFieldGet Function

Retrieve the value of a specified database field.

Namespace: XSharp.RT
Assembly: XSharp.RT (in XSharp.RT.dll) Version: 2.19

Syntax

Copy

 FUNCTION VoDbFieldGet(
	wFieldPos AS DWORD,
	ptrRetVal REF USUAL
) AS LOGIC

public static bool VoDbFieldGet(
	uint wFieldPos,
	ref Usual ptrRetVal
)

Request Example View Source

Parameters

wFieldPos: Type: DWord
The position of the field in the record structure for the current work area.
ptrRetVal: Type: Usual
A pointer to a polymorphic value.
This value will receive the requested information if the function is successful and will be unchanged otherwise.
If you just want to retrieve information, this value must be NIL before calling the function.
Although other RDDs may expand on this concept, the supplied RDDs limit using a non-NIL value to a single circumstance in which you can change the information rather than just retrieve it. With the DBS_ALIAS kInfoType, you can specify a non-NIL value, allowing you to specify a string that you can subsequently use to access the indicated field.

Return Value

Type: Logic
TRUE if successful; otherwise, FALSE.

Remarks

VODBFieldGet() is like FieldGet() but is strongly typed. This function, however, does not call the error handler and will not, therefore, produce a runtime error message or create an error object if it fails. Thus, it may be important to check the return value to determine if the function succeeded.
the LastRddError property in the runtime state. will contain needed information regarding any error that occurs.
See FieldGetArea(DWord, Symbol) for more information and an example.

Examples

Reference

Functions, Globals and Defines

XSharp.RT Namespace

FieldGetArea(DWord, Symbol)

FieldGetSym(Symbol)

FieldGetAlias(Symbol, Symbol)

FieldGetArea(DWord, Symbol)

VoDbFieldPut(DWord, Usual)

CoreDbFieldGet(DWord, Object)

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