I want to make a dll with an exposed C function accessible to applications on the system. Is there a better way to make it available than modifying %PATH%?
Because people don't like adding it to %PATH% 这里.
You have three options if you want to allow implicit linking to the dll :-
Create a native Win32 assembly that contains the dll and install it to WinSxS. This requires creating a simple .manifest file, the use of some crypto tools to sign the assembly (being the manifest file and the dll), and creating an MSI installer - or call IAssemblyCache directly to perform the actual install.
Install the dll to System32 - with this option you need to ensure the dll has a relativly unique name.
Ad the path to the dll to the someplace on the PATH (or modify path to point to the dll).
Other options if implicit linking to the C Function isn't critical:-
Create an COM interface that exposes the c-method. Register the path to the dll in the registry and users of the dll use CoCreateInstance to get the interface containing the function.
Store the path to the dll in the registry, and expect users of the dll to use that path with LoadLibrary, and GetProcAddress to load the dll.
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