System.Classes.TStream.WriteData
Delphi
function WriteData(const Buffer: TBytes; Count: NativeInt): NativeInt; overload;
function WriteData(const Buffer: Pointer; Count: NativeInt): NativeInt; overload;
function WriteData(const Buffer: Boolean): NativeInt; overload;
function WriteData(const Buffer: Boolean; Count: NativeInt): NativeInt; overload;
function WriteData(const Buffer: AnsiChar): NativeInt; overload;
function WriteData(const Buffer: AnsiChar; Count: NativeInt): NativeInt; overload;
function WriteData(const Buffer: Char): NativeInt; overload;
function WriteData(const Buffer: Char; Count: NativeInt): NativeInt; overload;
function WriteData(const Buffer: Int8): NativeInt; overload;
function WriteData(const Buffer: Int8; Count: NativeInt): NativeInt; overload;
function WriteData(const Buffer: UInt8): NativeInt; overload;
function WriteData(const Buffer: UInt8; Count: NativeInt): NativeInt; overload;
function WriteData(const Buffer: Int16): NativeInt; overload;
function WriteData(const Buffer: Int16; Count: NativeInt): NativeInt; overload;
function WriteData(const Buffer: UInt16): NativeInt; overload;
function WriteData(const Buffer: UInt16; Count: NativeInt): NativeInt; overload;
function WriteData(const Buffer: Int32): NativeInt; overload;
function WriteData(const Buffer: Int32; Count: NativeInt): NativeInt; overload;
function WriteData(const Buffer: UInt32): NativeInt; overload;
function WriteData(const Buffer: UInt32; Count: NativeInt): NativeInt; overload;
function WriteData(const Buffer: Int64): NativeInt; overload;
function WriteData(const Buffer: Int64; Count: NativeInt): NativeInt; overload;
function WriteData(const Buffer: UInt64): NativeInt; overload;
function WriteData(const Buffer: UInt64; Count: NativeInt): NativeInt; overload;
function WriteData(const Buffer: Single): NativeInt; overload;
function WriteData(const Buffer: Single; Count: NativeInt): NativeInt; overload;
function WriteData(const Buffer: Double): NativeInt; overload;
function WriteData(const Buffer: Double; Count: NativeInt): NativeInt; overload;
function WriteData(const Buffer: Extended): NativeInt; overload;
function WriteData(const Buffer: Extended; Count: NativeInt): NativeInt; overload;
function WriteData(const Buffer: TExtended80Rec): NativeInt; overload;
function WriteData(const Buffer: TExtended80Rec; Count: NativeInt): NativeInt; overload;
function WriteData<T>(const Buffer: T): NativeInt; overload;
function WriteData<T>(const Buffer: T; Count: NativeInt): NativeInt; overload;
C++
NativeInt __fastcall WriteData(const System::DynamicArray<System::Byte> Buffer, NativeInt Count)/* overload */;
NativeInt __fastcall WriteData(const void * Buffer, NativeInt Count)/* overload */;
NativeInt __fastcall WriteData(const bool Buffer)/* overload */;
NativeInt __fastcall WriteData(const bool Buffer, NativeInt Count)/* overload */;
NativeInt __fastcall WriteData(const char Buffer)/* overload */;
NativeInt __fastcall WriteData(const char Buffer, NativeInt Count)/* overload */;
NativeInt __fastcall WriteData(const System::WideChar Buffer)/* overload */;
NativeInt __fastcall WriteData(const System::WideChar Buffer, NativeInt Count)/* overload */;
NativeInt __fastcall WriteData(const System::Int8 Buffer)/* overload */;
NativeInt __fastcall WriteData(const System::Int8 Buffer, NativeInt Count)/* overload */;
NativeInt __fastcall WriteData(const System::Byte Buffer)/* overload */;
NativeInt __fastcall WriteData(const System::Byte Buffer, NativeInt Count)/* overload */;
NativeInt __fastcall WriteData(const short Buffer)/* overload */;
NativeInt __fastcall WriteData(const short Buffer, NativeInt Count)/* overload */;
NativeInt __fastcall WriteData(const System::Word Buffer)/* overload */;
NativeInt __fastcall WriteData(const System::Word Buffer, NativeInt Count)/* overload */;
NativeInt __fastcall WriteData(const int Buffer)/* overload */;
NativeInt __fastcall WriteData(const int Buffer, NativeInt Count)/* overload */;
NativeInt __fastcall WriteData(const unsigned Buffer)/* overload */;
NativeInt __fastcall WriteData(const unsigned Buffer, NativeInt Count)/* overload */;
NativeInt __fastcall WriteData(const __int64 Buffer)/* overload */;
NativeInt __fastcall WriteData(const __int64 Buffer, NativeInt Count)/* overload */;
NativeInt __fastcall WriteData(const unsigned __int64 Buffer)/* overload */;
NativeInt __fastcall WriteData(const unsigned __int64 Buffer, NativeInt Count)/* overload */;
NativeInt __fastcall WriteData(const float Buffer)/* overload */;
NativeInt __fastcall WriteData(const float Buffer, NativeInt Count)/* overload */;
NativeInt __fastcall WriteData(const double Buffer)/* overload */;
NativeInt __fastcall WriteData(const double Buffer, NativeInt Count)/* overload */;
NativeInt __fastcall WriteData(const System::Extended Buffer)/* overload */;
NativeInt __fastcall WriteData(const System::Extended Buffer, NativeInt Count)/* overload */;
NativeInt __fastcall WriteData(const System::TExtended80Rec &Buffer)/* overload */;
NativeInt __fastcall WriteData(const System::TExtended80Rec &Buffer, NativeInt Count)/* overload */;
template<typename T> NativeInt __fastcall WriteData(const T Buffer)/* overload */;
template<typename T> NativeInt __fastcall WriteData(const T Buffer, NativeInt Count)/* overload */;
Propriétés
Type | Visibilité | Source | Unité | Parent |
---|---|---|---|---|
function | public | System.Classes.pas System.Classes.hpp |
System.Classes | TStream |
Description
Méthodes responsables d'écrire jusqu'à Count
octets dans le flux à partir de Buffer
.
WriteData est utilisée quand le nombre d'octets à écrire dans le flux n'est pas nécessairement fixé.
WriteData fonctionne en utilisant les algorithmes suivants :
- Si WriteData ne contient pas de paramètre
Count
, WriteData tente d'écrire le nombre d'octetsSizeOf(Buffer)
. WriteData avance la position en cours dans le flux du nombre d'octets transférés. WriteData renvoie le nombre d'octets écrits. - Si WriteData contient le paramètre
Count
:- Si
Count
> SizeOf(Buffer)
, WriteData tente d'écrire le nombre d'octetsSizeOf(Buffer)
. WriteData avance la position en cours dans le flux du nombre d'octetsCount
. - Si
Count
<= SizeOf(Buffer)
, WriteData tente d'écrire le nombre d'octetsCount
dans le flux puis avance la position en cours dans le flux du nombre d'octets transférés. WriteData renvoie le nombre d'octets écrits, ce dernier peut être inférieur àCount
.
- Si
La méthode WriteData appelle Write pour effectuer leur écriture réelle.