著名安装工具－innosetup源代码

Inno Setup 2.0.19 Copyright (C) 1998-2001 Jordan Russell. All rights reserved. Portions by Martijn Laan. For conditions of distribution and use, see LICENSE.TXT. Source code README 1. Intro ======== First I would like to say that the source code is provided for educational purposes only. Because of its complexity, you probably will not be able to make any serious modificiations to it. Though I've tried to simplify and comment the code as much as possible, on lot of it you'll just have to figure out what it does because I don't have time to thoroughly comment everything. I compile all of Inno Setup's projects with Delphi 2.0 (the original 2.0; I never got the 2.01 update), with the exception of Compil32, which is compiled with Delphi 3.02 (for the better foreign character set support). Although the projects are compilable in later Delphi versions also, I still use Delphi 2 & 3 because of the significantly smaller code size footprint of their VCLs compared to the later versions. You cannot compile the projects under Delphi 1.x; 16-bit support has been dropped beginning with Inno Setup 1.3. If you intend to view or modify Inno Setup's forms, you must install 7 components that Inno Setup uses. The components are named BeveledLabel, GroupRadioButton, NewBevel, NewCheckListBox, NewGauge, NewFCtrl, and RichEditViewer, and are located in the Components directory. If you only want to edit code, then you may skip installation of the components, and choose "Cancel" when Delphi tells you a class can't be found. If you want to compile the CompForm unit, you must also have the SynEdit component suite installed. To download SynEdit, visit: http://synedit.sourceforge.net/ At the time of this writing, I am using the latest source from the SynEdit CVS repository. 2. Overview =========== Inno Setup consists of seven projects: Compil32.dpr - This is the GUI front-end for the compiler. Compil32 does not do the actual compilation itself; it relegates it to ISCmplr.dll. If the ISCmplr project is changed, you normally don't need to recompile Compil32 since it's essentially a text editor, and is not affected by internal changes to the compiler. Note: This is the only project that I compile under Delphi 3 (3.02 to be exact). The rest of the projects are compiled under Delphi 2.0. ISCmplr.dpr - This is a DLL which is loaded by Compil32 to compile scripts. The actual compiler code is in Compile.pas. See CompInt.pas for the various structures and function declarations used to interface to the DLL. SetupClassic.dpr - This is the actual "classic" style "Setup" program. It displays the wizard, and performs all installation-related tasks. SetupLdr.dpr - This is the "setup loader." It extracts a compressed Setup program into the user's TEMP directory and runs it from there. It also displays the "This will install..." message box. SetupModern.dpr - This is the actual "modern" style "Setup" program. Like SetupClassic.dpr it displays the wizard, and performs all installation-related tasks. Uninst.dpr - This is the uninstaller. Keep in mind that installations can append to other installations' uninstall logs, so you should not make changes to the internal file formats. RegSvr.dpr - This program is compiled into installations which use the "restartreplace" flag in the [Files] section along with "regserver" or "regtypelib". It is used to register DLL/OCXes and type libraries on the next reboot. This project rarely, if ever, needs to be recompiled. How do the projects link together? - ISCmplr, SetupClassic, SetupLdr, SetupModern, and Uninst share the unit Struct.pas. This unit contains various data structures and constants shared by the projects. If Struct.pas is changed, you usually will need to recompile ISCmplr, SetupClassic, SetupLdr, and SetupModern so that everything is in synch. Uninst may also need to be recompiled in some cases. - SetupClassic, SetupModern, and Uninst share the unit Undo.pas. Undo performs all uninstallation tasks. If Undo is changed, normally SetupClassic, SetupModern, and Uninst all need to be recompiled. - There are more units which are shared between projects. Search the 'uses' clauses of the projects and units if you aren't sure if a project uses a particular unit. 3. Delphi 2.0x users ONLY ========================= Before you can successfully compile the projects in Delphi 2.0, you must do two things: - Install the latest version of SYSTEM.DCU if you haven't already done so. It can be downloaded from Inprise's site at: http://www.borland.com/devsupport/delphi/downloads/index.html Look for "System.zip" in the "Delphi 2 Items" section. If you do not do this, you will probably get an "I/O Error" message when trying to run the projects. - If the files SHLOBJ.DCU and REGSTR.DCU are missing from your Delphi\Lib directory, download them here: http://www.jrsoftware.org/files/delphi200units.zip 4. Source code tips =================== - If you modify one of these project's source code: SetupClassic, SetupLdr, SetupModern, RegSvr, or Uninst, and want to be able to compile your installations with the new code, you'll need to copy the new EXE file(s) to the Setup Compiler directory under the extension .E32. - When debugging the SETUP project you should set UseSetupLdr=0 in your script, and copy the resulting SETUP.0, SETUP-1.BIN, and SETUP.MSG files to the source code directory. This way you can simulate an actual installation while running under the Delphi debugger. - When I release new versions, you can tell which source code files have changed by checking their date/time stamps. You can then use a file comparison utility such as DOS's "FC" or Microsoft's WinDiff to show the differences between an old version of a file and a new version. - All of the forms in the SetupClassic and SetupModern projects, with the exception of Main.dfm, have Scaled set to False. This is because they dynamically scale themselves at run-time by calling a function named SetFormFont. - A note for those curious: The Setup Compiler creates single EXE Setups by first creating the SETUP.EXE as usual, then concatenating the SETUP.0 and SETUP-1.BIN to the end of the SETUP.EXE, and finally modifying an internal data block in SETUP.EXE so it knows it's in "single EXE" form. - Starting with the 32-bit version of Inno Setup 1.12.7, I am using my own "StripReloc" utility to decrease the size of COMPIL32.EXE and .E32 files. To download StripReloc, go to: http://www.jrsoftware.org/striprlc.htm