This is a game mod implemented as a planted DLL file. It works by wrapping an existing DLL the game already uses and because it's in the game directory it's loaded before the one in the system directory.
To install just copy winmm.dll to the game directory (the directory that contains eqgame.exe).
To uninstall remove or rename winmm.dll.
Once the game runs the mod will create a config file named eqclientmod.ini which contains toggles for the included mods along with a brief description of what they do.
CPU high clock speed overflow fix. If you have a CPU that's more than 4.2 Ghz you probably need this to make the game run at the right speed.
This issue happens with all AMD Ryzen 7xxx and 9xxxx CPUs at least. The game normally samples the TSC by using the rdtsc instruction. This mod makes it use a modern API called QueryPerformanceCounter.
The game has a gamma slider in it but it does it in a really annoying way that changes the desktop gamma. It tries to restore it when the game exits but this doesn't always happen with multiple clients and crashes.
This mod disables the gamma functionality by detouring the function that would do this and instead doing nothing. If you like the gamma, make sure you edit eqclientmod.ini and disable this mod.
This mod adds the extra command handling that some of the other hacks use but it's not strictly necessary to enable this to use the other hacks. Basic commands included: /eqclientmod /crash
This hack removes the requirement to pass the 'patchme' argument to the program to start it.
This hack renames the application window from EverQuest to Client1, Client2, etc depending on how many other windows are already open. This is intended for macro software like hotkeynet and AutoHotKey to make it easier to search for the window.
This hack makes EQ borderless windowed when the startup window is desktop-sized. The game should be in windowed mode (WindowedMode=TRUE) and the resolution (WindowedWidth/WindowedHeight) should be set equal to the desktop resolution to trigger this hack. If you change resolution in game you will have to exit and restart the game to get the mod to activate.