Extract text from C/C++ header files (TLH)
To convert TLH Header files to another format, you need Microsoft Visual Studio or other Developer software.
To convert other file formats to the "C++ Header File" file type, you need software like Microsoft Visual Studio or a similar tool.
A .TLH file is a Type Library Header file automatically generated by the Microsoft Visual C++ compiler. It is created when a developer uses the #import directive on a Component Object Model (COM) type library, such as a DLL, TLB, or OCX file. The compiler reads the type library and generates this header to expose the COM interfaces, GUIDs, and structures in native C++ syntax.
Because these files are automatically generated during the build process, manually editing a .TLH file is useless. The compiler will overwrite your changes the next time it runs the #import statement. This makes the file highly restricted in its utility - it is strictly meant for the compiler, not for end-users or manual configuration.
Standard online converters fail to process .TLH files because they do not recognize the extension as a standard document format. However, underneath the rare extension, it is simply a plain text file. The best conversion targets are standard text formats like TXT, H, or CPP if you need to share the code with other developers who lack the original COM library. We can inspect the raw text content inside the .TLH file so you can read the generated class definitions and COM interfaces without needing a full IDE installed.
Convert.Guru analyzes your TLH file, detects the exact format, and lets you read the text inside.
Users also converted TLB, HH and PRI files.
If you want to convert TLH file to JS, TS, PY, JAVA, CPP, C, CS, PHP, RB, GO, RS or SWIFT, you can use Microsoft Visual Studio or similar software from the "Developer Source Code" category. In the File menu, look for Save As… or Export….
To convert SH, PY, KT, PS1, SWIFT, LUA, PL, JAVA, SCALA, JS, VBS or TS files to TLH, try Microsoft Visual Studio or another comparable tool in the "Developer Source Code" category.
The history of Convert.Guru began over 25 years ago in California with Tom Simondi’s file-format database. A former contributor to Space Shuttle development and a software pioneer of the 1980s, Simondi established a trusted resource for file type analysis that was even referenced by Microsoft Windows XP. Today, we use modern technology to process and convert thousands of file formats while continually improving our TLH converter.