EasyHook | EasyHook - The reinvention of Windows API Hooking | Cybersecurity library

I was trying to automatically inject a dll to every process (including GUI) whenever it is started by a user . My DLL hooks DoDragDrop method of winapi and communicates with server to decide allow or disallow the drag & drop process. I use easyhook (particularly this tutorial) for hooking part. I created a gist for my code : Gist

In this url it says: Doesn’t work reliably against GUI applications. Stick to console apps. No wonder it didn't work in microsoft edge, and chrome. I also tried code parts in these urls: first second Finally , I already certificated my dll.

Is there any other way apart from appcertdlls? Thank you in advance.

Edit: I can't use appinitdlls, some users might have secure boot enabled.

Edit2: Seems like dlls in some tutorials is under system32 (this, and this) , and I moved mine under system32 too, but it did not work.

i am trying to work on easyhook in python and here is my code

There is a program which I can't modify it's code having been opened. I want to create a "watcher" to hook the closing event of that program in order to make the main window of the program hidden rather than being closed when users try to close that program.

I have googled it and someone says hook the API named OpenProcess would work. I tried using a C# lib called "EasyHook" and succesfully inject a remote process and hook MessageBeep API. Then I tried hooking OpenProcess and TerminateProcess, but the hooked methods of those two methods were never called.

So what is the proper method should I hook or is there any other way can realize my purpose? If there is no way to prevent the process being terminated with task manager, is there any tricks like hooking the close button of the window etc.?

PS. I don't know kernel programing of Windows and driver programing, so I want to realize it in user mode if it is possible.