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TLH File - What is a .tlh file and how do I open it?

Learn about .TLH files and view a list of programs that open them.

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Overview

What is a TLH file? Header file generated by a Microsoft C/C++ compiler; contains definitions of interfaces and identifiers generated by the #import directive; used in conjunction with a .TLI file to reconstruct compiled type library contents for use in C/C++ source code.

More Information NOTE: The #import directive generates both TLH and TLI files. For example, the command #import "mylib.tlb" generates the "mylib.tlh" and "mylib.tli" files from a .TLB file.

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.TLH File Extension

Typelib Generated C/C++ Header File

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What is a TLH file?

Header file generated by a Microsoft C/C++ compiler; contains definitions of interfaces and identifiers generated by the #import directive; used in conjunction with a .TLI file to reconstruct compiled type library contents for use in C/C++ source code.

More Information

NOTE: The #import directive generates both TLH and TLI files. For example, the command #import "mylib.tlb" generates the "mylib.tlh" and "mylib.tli" files from a .TLB file.

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Programs that open or reference TLH files

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Microsoft Visual Studio 2022

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Updated: July 8, 2010

FAQ

What is a TLH file?↓
Header file generated by a Microsoft C/C++ compiler; contains definitions of interfaces and identifiers generated by the #import directive; used in conjunction with a .TLI file to reconstruct compiled type library contents for use in C/C++ source code.

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