File Types Created for Visual C++ Projects

This topic describes all the types of files that are associated with Visual C++ projects. The actual files included in your project depend on the project type and the options you select when using a wizard.

• Project Files and Makefiles

• Files Created for CLR Projects

• ATL Program or Control Source and Header Files

• MFC Program or Control Source and Header Files

• Precompiled Header Files

• Resource Files

• Help Files (WinHelp)

• Miscellaneous Project Files

When you create a Visual C++ project, you might be creating a new solution, or you might be adding a project to a solution. Non-trivial applications are commonly developed with multiple projects in a solution.

Projects usually produce either an EXE or a DLL. Projects can be dependent on each other; during the build process, the Visual C++ environment checks dependencies both within and between projects. Each project has core source code, and depending on the kind of project, it may have many other files containing various aspects of the project. The contents of these files are indicated by the file extension. The Visual Studio development environment uses the file extensions to determine how to handle the file contents during a build.

The following table shows common files in a Visual C++ project, and identifies them with their file extension. Throughout this section, Projname represents the name of the project.

File extension	Type	Contents
.asmx	Source	Deployment file.
.asp	Source	Active Server Page file.
.atp	Project	Application template project file.
.bmp, .dib, .gif, .jpg, .jpe, .png	Resource	General image files.
.bsc	Compiling	The browser code file.
.cpp; .c	Source	Main source code files for your application.
.cur	Resource	Cursor bitmap graphic file.
.dbp	Project	Database project file.
.disco	Source	The dynamic discovery document file. Handles XML Web service discovery.
.exe, .dll	Project	Executable or dynamic-link library files.
.h	Source	The header, or include, file.
.htm, .html, .xsp, .asp, .htc, .hta, .xml	Resource	Common Web files.
.HxC	Project	Help project file.
.ico	Resource	Icon bitmap graphic file.
.idb	Compiling	The state file, containing dependency information between source files and class definitions, which can be used by the compiler during minimal rebuild and incremental compilation. Use the /Fd compiler option to specify the name of the .idb file. See /Gm (Enable Minimal Rebuild) for more information.
.idl	Compiling	The interface definition language file. See Interface Definition (IDL) File in the Windows SDK for more information.
.ilk	Linking	Incremental link file. See /INCREMENTAL for more information.
.map	Linking	A text file containing linker information. Use the /Fm compiler option to name the map file. See /MAP for more information.
.ncb	Solution	The no compile browser file.
.obj, .o		Object files, compiled but not linked.
.pch	Debug	Precompiled header file.
.pdb	Debug	The program debug database file. See What Are .pdb Files? for more information.
.rc, .rc2	Resource	Resource script files to generate resources.
.sbr	Compiling	Source browser intermediate file. The input file for BSCMAKE.
.sln	Solution	The solution file.
.suo	Solution	The solution options file.
.txt	Resource	Text file, usually the "readme" file.
.vap	Project	Visual Studio Analyzer project file.
.vbg	Solution	Compatible project group file.
.vbp, .vip, .vbproj	Project	The Visual Basic project file.
.vcproj	Project	The Visual C++ project file. See Project Files and Makefiles for more information.
.vdproj	Project	The Visual Studio deployment project file.
.vmx	Project	The macro project file.
.vup	Project	The utility project file.

For information on other files associated with Visual Studio, see File Types and File Extensions in Visual Studio .NET.

Project files are organized into folders in Solution Explorer. Visual C++ creates a folder for source files, header files, and resource files, but you can reorganize these folders or create new ones. You can use folders to organize explicitly logical clusters of files within the hierarchy of a project. For example, you could create folders to contain all your user interface source files, or specifications, documentation, or test suites. All file folder names should be unique.

When you add an item to a project, you add the item to all configurations for that project, regardless of whether or not the item is buildable. For example, if you have a project named MyProject, adding an item adds it to both the Debug and Release project configurations.

See Also

Concepts

Visual C++ Projects

Wizard Support for Other Languages

Other Resources

Creating and Managing Visual C++ Projects