Explicit and implicit loading methods for Dynamic Link Libraries

Explicitly load the dynamic link library, as long as the corresponding DLL is placed under the directory.

Implicit loading of static databases: 1. add the corresponding project-settings-connection-Object Library module. the LIB file requires such configuration, and the corresponding DL must be l in the directory.

2. yes \ stdafx. after adding these two sentences to the H file, the compiler can go to the specified directory. lib is loaded into the project, and the effect is the same as the above configuration. I recommend this method to be better.

# Pragma comment (Lib, ". \ Lib \ ** socket. lib") // dynamic link library for network operations
# Pragma comment (Lib, ". \ Lib \ ** reader. lib") // dynamic link library for serial port operations