First, create a new project MyLib (encapsulate your own static library)

1. Header file Test.h: (_declspec(dllexport) should be placed in front of the exported class name, indicating that the package should be exported to the library)

#pragma onceclass _declspec(dllexport) Test{public:void say();};

2. Source file Test.cpp:

#include "Test.h"#includevoid Test::say() {std::cout << "Hello! My name is linyu!" << std::endl;}

3. Right-click project properties -> configuration properties -> configuration type (modified to static library.lib):

4. Right-click to generate, a static library will be generated

Second, create a new project TestMyLib (calling the library just encapsulated)

1. Copy the header file Test.h to the source file directory of the project

2. Go back to the project, header file -> right click -> add existing item Test.h

3. Linker->General->Additional library directory, link to the directory where MyLib.lib is located:

4. Linker->Input->Additional dependencies, add the generated library name MyLib.lib

5. Write TestMyLib.cpp file:

#include #include "Test.h"int main(){Test t;t.say();}

6. Click to run

The reason for this problem is that the current project is the Debug version, and the referenced library file is the Release version.

Solution 1: Just change the current Debug mode to Release mode.

Solution 2: Regenerate a debug version of the library file.Then modify the linker--general--additional library directories.Re-include the directory where the debug repository is located.