Low Level Utilities

The Low Level Utilities package is a runtime package containing units and classes that are used by the other packages on my Delphi Website. 

* Last Updated 4th September 2004

• RAS.PAS is an import unit for the RAS functions in RASAPI32.DLL
  
  
• TWAIN.PAS is an import unit for the TWAIN functions in twain_32.dll
  
• RICHOLE.PAS is an import unit for the IRichEditOle Interface
  
• MultiLanguage_tlb.pas is an import unit for MULTLANG.DLL
  
  
• unitMAPIX is an import unit for some extended MAPI functions
  
  
• GraphFlip contains simple functions to quickly rotate 24bpp bitmaps.
  
  
• unitExGraphics contains SystemPalette2 - a simple black and white palette, and SystemPalette256 - a web compatible 256 colour palette.  It also contains the iHLSToRGB function for converting colour formats.
  
  
• unitCharsetMap contains functions for obtaining font charset and codepage information from ISO charset strings
  
  
• TCallbackComponent can be used as a base for invisible components that require a window handle.
  
  
• TExRegistry, derived from TRegistry provides additional registry handling capabilities, including  support for Multi String values, and importing and exporting regedit compatible .REG files
  
  
• TVirtualMemoryStream derived from TCustomMemoryStream allows you to reserve contiguous blocks of memory.
  
  
• unitMIDIGlobals contains constants, type definitions and low level functions useful for manipulating MIDI data
  
  
• TMidiTrackStream is derived from TVirtualMemoryStream and allows you to load and save track information from MIDI files.
  
  
• TVersionInfo allows you to access details held in Version Info resources from your programs
  
  
• TObjectCache allows you to store objects in a fixed-length cache
  
  
• TStreamTextReader allows you to treat streams like a text file
  
  
• TGoogleLikeStringSearcher allows you to search strings using Google-style expressions
  
  
• TTextFileReader is a fast text file reader.
  
  
• TBTree is a disk-based B-Tree index which associates an integer value with a variable length string.  Supports strings up to about 2000 characters.  Also allows sorted sequential access of strings and their associated integers.
  
  
• TDataTree is a disk-based B-Tree index which associates a variable length string value with an integer.
  
  
• TIndexTree is a disk-based B-Tree index which associates an integer value with another integer value - effectively providing a sparse array of integers.
  
  
• TBTreeIterator is a support class that allows you to quickly iterate through a TBTree
  
  
• TDataTreeIterator is a support class that allows you to quickly iterate through a TDataTree.