dll and exe

• exe files are not DLLs unfortunately, they are different things. In C/C++ coding DLL files lack the main() function
• DLLs have DllMain which handles the process and thread attachment and detachment events. If you compile to an EXE you won't be able to hook into those.

DLL有DllMain，可以hook；
DLL的源代码没有main()，无法执行。