System.Classes.TStream.WriteData

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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 */;

Properties

Type Visibility Source Unit Parent
function public
System.Classes.pas
System.Classes.hpp
 System.Classes TStream

Description

Methods responsible for writing up to Count bytes from Buffer to the stream.

WriteData is used in cases, where the number of bytes to write to the stream is not necessarily fixed.

WriteData works using the following algorithms:

  • When WriteData does not have the Count parameter, then WriteData tries to write the SizeOf(Buffer) number of bytes. WriteData advances the current position in the stream by the number of bytes transferred. WriteData returns the number of bytes written.
  • When WriteData has the Count parameter, then:
    • If Count > SizeOf(Buffer), then WriteData tries to write the SizeOf(Buffer) number of bytes. WriteData advances the current position in the stream by the Count number of bytes.
    • If Count <= SizeOf(Buffer), then WriteData tries to write up to the Count number of bytes to the stream and then advances the current position in the stream by the number of bytes transferred. WriteData returns the number of bytes written, which may be less than Count.

WriteData methods call Write to do their actual writing.

See Also

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