This component encapsulates an About Box in a non-visual component. It has various string properties to display five different pieces of information in the about box.

Alternatively, the about box can display information extracted from the program's version information resource. This is accessed using a linked TPJVersionInfo component - available from DSP and my website.

Note: The TPJVersionInfo component must be installed before this component.

The About box also displays an icon. This is the icon defined for the application (see the Icon property of TApplication). If no icon has been specified for the application the default Delphi icon is used.

The display attributes and location on the screen can also be customised.

A help file is included that integrates into the IDE for Delphi 3 to 7. It does not integrate with the Delphi 1, 2 and 2005 or later IDEs but can be used independently of the IDE.

TPJVersionInfo is a 32 bit non-visual component for all Win32 versions of Delphi and C++Builder that encapsulates the version information contained in an executable file's resources.

The component reads information from a designated file's VERSIONINFO resource. The required file is specified in the component's FileName property. Setting FileName to the empty string fetches version information for the executable containing the component. The boolean HaveInfo property indicates whether the file contains version information. This component can access variable file information for each language provided in the resource.

Run-time properties enable access to to version information. Properties enable:

• Access to fixed file information, either by field or the whole record.
• Access to the number of translations stored in the version information.
• Selection of the translation for which information is to be returned by other properties.
• Access to the language and code page of the current translation - by code and by name.
• Access to the string file information for the current translation - named properties access the Microsoft-defined string information, while an array property gives access to any string item by name.

The component makes calls to the Windows API. Therefore the version information being read must follow the Microsoft guidelines - be warned that not all software complies!

For detailed information about version information refer to the Win32 SDK.

A help file is provided that integrates with the help system of Delphi 3 to 7. An a-link keyword file is provided for integration with Delphi 6 and 7.

Source code of two demo programs is also provided.

• 40 Ciphers (IDEA, Blowfish, Twofish, DES, Square ...)
• 23 Hashs (MD4/5, SHA/1, RipeMD, Havel, Tiger ...)
• 5 Checksums (CRC32, CRC16-CCITT, CRC16-Standard ...)
• 6 Textformats (MIME Base 64, XX/UU Coding, RFC1760 Six Word ...)
• 2 Randoms (LFSR Linear Feedback Shift Register with variable Period upto 2^2032-1 ...)
• with Ciphers can be encrypt in Modes CTS/CBC/CFB/OFB/ECB
• Ciphers supports Message Authentication Codes in CBC-MAC/CFB-MAC/CTS-MAC
• fast Implementation (i.E. Blowfish > 8Mb/sec, MD4 > 27Mb/sec)
• full and easy objectorientated
• High optimized Assembler Core
• Designtime Components to managing Cipher- and Hashclasses
• Message Authentication Codes for all Hash's (Internet RFC2104-HMAC's ...)
• Internet RFC2289/RFC1760/RFC2444 One Time Password Routines as Component
• Self Test Support for all Cipher-, Hash- and Checksumclasses
• multiple cascading (chanining) from all Cipher-, Hash-, Random- and Compressionclasses
• all Cipher-, Hash-, Randomclasses can be encrypt, decrypt, scramble and wipe any Inputs as String, Stream, File or Buffer in multiple chaining modes
• detailed and full DEMO, Docus for implemented RFC's

TPJWdwState and TPJRegWdwState are a pair of non-visual components that can save and restore a window's size, position and state between program executions. Key features are:

• The components can automatically restore and save window state when the program starts up and closes down.
• The user can provide an event handler to change the stored window's state, size and position values before the window is restored.
• The components can be instructed to always display a window in the normal state regardless of the saved state.
• The window's saved size can be ignored and the form's design size used (useful for dialog boxes and fixed size windows).
• The window can be kept within the current work area of the desktop.

TPJWdwState stores window information in an ini file while TPJRegWdwState uses the Windows registry.

A help file is included that integrates into the Delphi 3-7 OpenHelp system and can be used stand-alone with Delphi 2005 and later.

A property editor is provided for editing HKEY values (such as the registry root key property of TPJRegWdwState). This editor is also available separately.

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Added: 23-08-1999/19-12-2005   |  Version: 4.3.1   |  Downloads: 4112/3812/56

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Author:

Peter D Johnson   [Homepage]   [DSP files]

This code defines a property editor for properties of type HKEY - i.e. registry root keys. The editor causes a drop-down list of all the registry root keys supported by Delphi to be displayed in the object inspector for any property of type HKEY.

Such a property is exposed by my TPJRegWdwState component (available on DSP or from my website). This property editor is included with current releases of that component.

DCPcrypt is an open source library of cryptographic components (encryption and hash algorithms) for Borland Delphi 4, 5, 6, C++ Builder (3?), 4, 5, 6 and Kylix 1, 2 for Linux.

The idea behind DCPcrypt is that it should be possible to "drop in" any algorithm implementation to replace another with minimum or no code changes. To aid in this goal all cryptographic components are descended from one of several base classes, TDCP_cipher for encryption algorithms and TDCP_hash for message digest algorithms.

DCPcrypt v2 contains full implementations of the following algorithms:

• Blowfish, Twofish
• Cast-128, Cast-256
• DES, 3DES
• Ice, Thin Ice, Ice2
• IDEA
• Mars
• Misty1
• RC2, RC4, RC5, RC6
• Rijndael (the new AES)
• Serpent
• TEA
• Haval
• MD4, MD5
• RipeMD-128, RipeMD-160
• SHA-1, SHA-256, SHA-384, SHA-512
• Tiger

System information classes and associated global variables. Information is provided via:

• TPJComputerInfo: a static class that provides information about the user's computer.
• TPJSystemFolders: a static class that gets full path of certain system folders.
• TPJOSInfo: a static class that provides information about the Windows operating system including platform, product and edition, service packs, version numbers, product ID etc.
• Global Win32XXX variables: extra variables to those provided by the SysUtils unit that provide extended OS version information on later NT platform OSs.

Extended operating system detection improved in this release: can now detect Windows Vista, XP Tablet and XP Media Center editions, and WOW64 subsystem of 64 bit Windows.

The TPJSysInfo component and a set of functions that were provided in earlier versions of the unit are also included but are now deprecated.

• TAudioMixer
  Provides an easy interface to manage audio mixer controls.
• TWaveStorage
  Stores a single wave audio and provides access to its informational fields.
• TWaveCollection
  Stores a collection of wave audio's as resource and provides access to their informational fields.< /LI>
• TAudioPlayer
  Plays a wave audio, which is stored in the component.
• TAudioRecorder
  Records wave audio and stores it in the component.
• TStockAudioPlayer
  Plays wave audio from a TWaveStorage or TWaveCollection component, a stream, or a file.
• TStockAudioRecorder
  Records wave audio to a TWaveStorage or TWaveCollection component, a stream, or a file.
• TLiveAudioPlayer
  Plays wave audio from user defined buffers.
• TLiveAudioRecorder
  Records wave audio to user defined buffers.
• TAudioRedirector
  Records wave audio from an input audio device and plays it on an output audio device.
• TMultimediaTimer
  Is a high resolution timer.