Delphi10.2 项目的构成（File Extensions of Files Generated by RAD Studio）
Step1、打开 Delphi10.2，选择【File | New | VCL Forms Application - Delphi】，创建一个 Delphi 应用程序；
Step2、选择【File | Save All】，将我们的默认Delphi程序保存到一个独立的文件夹（例如 F:\Delphi10.2\First）中；
Step3、在 Project Manager 中的 Build Configurations 和 Target Platforms 选项中分别选择 32位 Debug、32 位 Release、64位 Debug和64位 Release组合，并按【F9】运行我们的程序；
Step4、接下来打开Windows资源管理器，打开刚刚保存的文件夹看看，如下图：
并且 Win32(Win64) 的 Debug(Release) 目录下文件如下：
下面结合 Delphi10.2 的帮助文件说明下每个文件的具体意义：
- 【Project1.dpr】Delphi project source; when compiled, produces .exe, .dll, or .ocx file.
- 【Project1.dproj】Delphi project file created by the IDE. Contains the current settings for project options, such as compiler and linker settings, directories, conditional directives, and command-line parameters. Set these options using Project > Options. This file is not used when compiling a project from the command line using the command line compiler.
- 【Project1.dproj.local】User-specific project options.
- 【Project1.identcache】Information used for refactoring.
- 【Project1.res】Compiled and uncompiled resource files.
- 【Unit1.dfm】A Windows VCL form file.
- 【Unit1.pas】Delphi source file.
- 【_history 文件夹】 There are now three versions of the file stored in the current directory in a hidden directory named __history.
- 【_recovery 文件夹】 When Tools > Options > Environment Options > AutoRecover is enabled, RAD Studio saves the recovery files in the hidden folder called
_recovery, in the folder of your project. - 【Win32 文件夹 】Output folder, 32-bit Windows platform
- 【Win64 文件夹】 Output folder, 64-bit Windows platform
- 【Project1.exe】 应用程序
- 【Unit1.dcu】Delphi compiled unit file.
Delphi10.2 VCL Forms Application 的构成
原文：http://www.cnblogs.com/pchmonster/p/7622902.html
