JCL Help:TJclFileMapping.Create@THandle@string@Cardinal@Int64@PSecurityAttributes

 JCL Help: TJclFileMapping.Create Constructor (THandle, string, Cardinal, Int64, PSecurityAttributes)

TJclFileMapping

► TJclFileMapping Methods

[+] TJclFileMapping Methods

► TJclFileMapping Properties

[+] TJclFileMapping Properties

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Summary

Creates an instance of a TJclFileMapping object.

Pascal

 public constructor Create(const FileName: string; FileMode: Cardinal; const Name: string; Protect: Cardinal; const MaximumSize: Int64; SecAttr: PSecurityAttributes); overload;
public constructor Create(const FileHandle: THandle; const Name: string; Protect: Cardinal; const MaximumSize: Int64; SecAttr: PSecurityAttributes); overload;

Parameters

Parameters	Description
const FileName: string	Fully qualified name of the file to map.
FileMode: Cardinal	Access mode to open the file with. See the "File open mode constants" topic in the Delphi help for a list of valid values.
const Name: string	Name for the filemapping object. Specifying a name allows another process to open the same filemapping object.
Protect: Cardinal	Protection attributes for the filemapping object. See the Win32 help file or Platform SDK for the allowed values (look at the description of the CreateFileMapping function, flProtect parameter).
const MaximumSize: Int64	Maximum size of the filemapping object. If you specify 0 the filemapping will be the same size as the underlying disk file (which is not allowed to have a size of 0 itself).
SecAttr: PSecurityAttributes	Security attributes for the filemapping. See the Win32 help file or Platform SDK for details.
const FileHandle: THandle	Handle to a disk file. Must be a valid handle.

Description

Creates an instance of a TJclFileMapping object. The filemapping object is backed by an actual disk file and it is the callers responsibility to ensure the disk file actually exists. As such the FileHandle parameter must be a valid handle or the FileName, FileMode combination must be valid.

About

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Wim De Cleen

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