Last Updated September 9, 2001
| 1 | .EXE | Executable File | Build by Linker |
| 2 | .DLL | DLL-file | Build by Linker |
|   | .OCX | OCX-file | Build by Linker |
| 3 | .DSW | Developer Studio Workspace | |
| 4 | .DSP | Developer Studio Project | Serves as MAKE-file in VC++ 6.0 |
| 5 | .H | Header (file) | |
| 6 | .C | C ( implementation file ) | C source file |
|   | .CPP | C Plus Plus ( implementation file ) | C++ source file |
|   | .CXX | C++( implementation file ) | C++ source file |
| 7 | .RC | Resource ( file ) | |
| 8 | .CLW | Class Wizard ( file ) | Class Wizard Data File |
| 9 | .IDL | Interface Definition Language | |
| 10 | .TLB | Type Library (file) | |
| 11 | .TLH; | Type Library Header (file) | |
| 12 | .TLI | ... (file) | |
| 13 | .ODL | Object Description Language | ActiveX Object Description File. Serves the role of ATL IDL-file in MFC ActiveX Controls |
| 14 | .PCH | Precompiled Header (file) | |
| 15 | .RGS | Registry Script (file) | |
| 16 | .MK | Make (file) | |
| 17 | .OBJ | Object (file) | Object file produced by (code) compiler |
| 18 | .RES | Resource Object (file) | Object file produced by rerource compiler |
| 19 | .APS | Application Studio (file) | Resource View Data |
| 20 | .NCB | No Compile Browser (file) | Class View Data |
| 21 | .DEF | Definition (file) | DLL definition file |
| 22 | .EXP | dExport File | |
| 23 | .HPJ | Help Project (file) | Help file activated by CWnd::WinHep() |
| 24 | .OPT | (User )Options | Project Options File |
| 25 | .LIB | LIbrary (file) | |
| 26 | .PLG | Project Log (file) | |
| 27 | .IDB | ... (file) | |
| 28 | .PDB | ... (file) | |
| 29 | .TRG | ... (file) | |
|   | .OCA | ... (file) | |
| 30 | .ILK | ... (file) | |
| 31 | .RC2 | ... (file) | |
| 32 | .CNT | Content (file) | |
| 33 | .LIC | Licence (file) | |
| 34 | .IDB | ... (file) | |
| 35 | .BSC | ... (file) | |
| 36 | .SBR | ... (file) | |
| 37 | .ICO | ... (file) | |
| 38 | .BMP | BitMap (file) |
File Types Created for Visual C++ Projects
Q132340 :: Common File Extensions Used by Visual C++
Q156513 :: Which Visual C++ Files to Add to Source-Code Control