How to Convert POTX to MHTML via C++
Get Started with .NET File Automation APIs
Install via Package Manager Console of Visual Studio with
Alternatively, get the offline MSI installer or DLLs in a ZIP file from downloads .
Convert Protected POTX to MHTML via C++
Using the API, you can also open the password-protected document. If your input POTX document is password protected, you cannot convert it to MHTML without using the password. When your document is password protected, it means it enforces certain restrictions on the presentation. To remove the restrictions, the password has to be entered. A password-protected presentation is considered a locked presentation. The API allows you to open the encrypted document by passing the correct password in a LoadOptions object. The following code example shows how to open an encrypted document with a password.