1. 修改c_cpp_properties.json

    {"configurations": [{"name": "windows-gcc-x64","includePath": ["${workspaceFolder}/**","D:/mingw64/mingw64/include","D:/openCV_win/build/install/include","D:/openCV_win/build/install/include/opencv2"],"compilerPath": "D:/mingw64/mingw64/bin/gcc.exe","cStandard": "${default}","cppStandard": "${default}","intelliSenseMode": "windows-gcc-x64","compilerArgs": [""]}],"version": 4
   }
   

2. 修改tasks.json

   {"tasks": [{"type": "cppbuild","label": "C/C++: g++.exe 生成活动文件","command": "D:\\mingw64\\mingw64\\bin\\g++.exe","args": ["-fdiagnostics-color=always","-g","${file}","-o","${fileDirname}\\${fileBasenameNoExtension}.exe","-I", "D:/openCV_win/build/install/include/","-I", "D:/openCV_win/build/install/include/opencv2/","-L", "D:/openCV_win/build/install/x64/mingw/bin/lib*"],"options": {"cwd": "${fileDirname}"},"problemMatcher": ["$gcc"],"group": {"kind": "build","isDefault": true},"detail": "调试器生成的任务。"}],"version": "2.0.0"
   }
   

3. launch.json

   {"version": "0.2.0","configurations": [{"name": "C/C++ Runner: Debug Session","type": "cppdbg","request": "launch","args": [],"stopAtEntry": false,"externalConsole": true,"cwd": "${workspaceFolder}","program": "${workspaceFolder}\\${fileBasenameNoExtension}.exe","MIMode": "gdb","miDebuggerPath": "gdb","setupCommands": [{"description": "Enable pretty-printing for gdb","text": "-enable-pretty-printing","ignoreFailures": true}]}]
   }
   

4. 新建test.cpp

    #include <iostream>
   #include <opencv2/opencv.hpp>
   using namespace std;int main() {std::cout << "Hello, World start" << std::endl;cv::Mat img = cv::imread("C:/Users/Pictures/nba/724224.jpg");cv::imshow("img", img);cv::waitKey(0);std::cout << "Hello, World end" << std::endl;return 0;
   }
   

如果F5出错
Unexpected GDB output from command “-exec-run”.
需要修改mingw64的环境变量到git前
运行效果：