The VC project documentation shows: (Where is it, who knows please remind me to add, thank you)
.opt engineering regarding the parameter file of the development environment. Such as information such as toolbar position; .aps (appstudio file), resource auxiliary file, binary format, generally do not need to take care of him. The CLW ClassWizard information file is actually the format of the INI file. Interested to study. Sometimes ClassWizard If you have a problem, you can resolve the CLW file. If this file does not exist, you will draw a rebuilt in a time with ClassWizard. .Dsp (developerStudio Project): Project file, text format, but not familiar, do not modify it. DSW (DeveloperStudio Workspace) is a workspace file, other features and DSPs are similar. PLG is compiled information files, compiled error and warning information files (actually an HTML file), generally not large. In Tools-> Options There is an option to control the generation of this file. HPJ (Help Project) is an engineering that generates the help file, with Microsfot Help Compiler can handle. .Mdp (Microsoft DevStudio Project) is an old version of the project file, if you want to open this file If you will be prompted to convert to a new DSP format. .Bsc is used to browse project information, if you use the Source Brower, you must have this file. If you don't have this feature, you can remove your Generate Browse Info file in Project Options. You can speed up the compilation speed. .Map is the image information record file for executing the file unless it is very familiar with the underlying layer, this file is generally not used. .Pch (pre-compiled file) is a pre-compiled file, you can speed up compilation, but file Very big. .Pdb (Program Database) Records some of the data and debug information related to the program. It may be useful when debugging. .Exp only generates when compiling the DLL, record some of the information in the DLL file. Generally Nothing is used. No Compile Browser. This file can be deleted when the function is automatically completed. BUILD will be automatically generated.
