Opening a TLH File

The TLH file type is primarily associated with Visual Studio.

TLH	File extension: TLH
	File type:	type library header

What is a TLH file

TLH files mostly belong to Visual Studio by Microsoft. A TLH file is a header which is auto-generated from the type library (Typelib) or a C# or C++ application created with Visual Studio integrated development environment. Unlike library header (H) files, TLH headers are usually empty and only used when compiling an application providing the TLB file in the project is included in a library (CPP or CS) file using the #import (instead of #include) directive. A TLI file containing information used to reconstruct a compiled type library is generated alongside the TLH file.

How to open a TLH file

You need a suitable software like Visual Studio to open a TLH file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your TLH file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a TLH file directly in the browser:. Just drag the file onto this browser window and drop it.

Online TLH Text Viewer

Choose your .tlh file to analyze

or drag and drop it here

Online File Viewer

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Programs that open and convert TLH files:

Visual Studio by Microsoft
See the previous paragraphs to learn more about the main application. TLH files are often referred to as Visual Studio developers because this type of file is primarily created or used by this software.
Adder100

Technical Data for TLH File Extension

File classification:

Developer

Related files:

tlb, hh, res

The following listing is compiled from the database produced by the 'Associate This!' program, selected data from the main FILExt database and file extension information submitted by users.

ProgramID: tlhfile, FileType: TLH file, AppName: Microsoft (R) Developer Studio

ProgramID: tlhfile, FileType: Typelib Generated C/C++ Header File, AppName: Microsoft Visual Studio NET 2002
EXEFile: devenv.exe

ProgramID: tlhfile
EXEFile: %ProgramFiles%\Microsoft Visual Studio .NET\Common7\IDE\devenv.exe /dde

ProgramID: VisualStudio.tlh.7.1
EXEFile: %ProgramFiles%\Microsoft Visual Studio .NET 2003\Common7\IDE\devenv.exe /dde

ProgramID: VisualStudio.tlh.7.1
EXEFile: %ProgramFiles%\Visual Studio .NET 2003\Common7\IDE\devenv.exe /dde

ProgramID: VisualStudio.tlh.8.0
EXEFile: %ProgramFiles%\Microsoft Visual Studio 8\Common7\IDE\devenv.exe /dde %1

ProgramID: VCExpress.tlh.8.0
EXEFile: %ProgramFiles%\Microsoft Visual Studio 8\Common7\IDE\VCExpress.exe /dde %1

ProgramID: VCExpress.tlh.8.0
EXEFile: %ProgramFiles%\Microsoft Visual Studio 8\Common7\IDE\VCExpress.exe /dde

ProgramID: VisualStudio.tlh.9.0
EXEFile: %ProgramFiles%\Microsoft Visual Studio 9.0\Common7\IDE\devenv.exe

ProgramID: VCExpress.tlh.9.0
EXEFile: %ProgramFiles%\Microsoft Visual Studio 9.0\Common7\IDE\VCExpress.exe

Show all 10 listings To Top

a tlh type library header is a special file format by Microsoft and should only be edited and saved with the appropriate software.

How to solve problems with TLH files

Associate the TLH file extension with the correct application.
Update your software that should actually open type library headers. Because only the current version supports the latest TLH file format. Search, therefore, e.g. on the Microsoft manufacturer website after an available Visual Studio update.
To make sure that your TLH file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
Click here to open your .TLH file online - secure, fast, and no downloads needed.