在VS代码中使用.natvis文件可视化C++对象

Question

根据this link的说法，.natvis文件可以用来可视化原生对象。具体地说，我希望能够使用this .natvis file检查Eigen::Matrix对象。

但是，上面的链接并不包含任何关于如何在VS代码中实际使用.natvis文件的信息。是否可以使用自定义的.natvis文件？

下面是我的launch.json文件以供参考：

{
    // Use IntelliSense to learn about possible attributes.
    // Hover to view descriptions of existing attributes.
    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
    "version": "0.2.0",
    "configurations": [
        {
            "name": "g++-8 build and debug active file",
            "type": "cppdbg",
            "request": "launch",
            "program": "${fileDirname}/${fileBasenameNoExtension}",
            "stopAtEntry": false,
            "cwd": "${workspaceFolder}",
            "environment": [],
            "externalConsole": false,
            "MIMode": "gdb",
            "setupCommands": [
                {
                    "description": "Enable pretty-printing for gdb",
                    "text": "-enable-pretty-printing",
                    "ignoreFailures": true
                }
            ],
            "preLaunchTask": "g++-8 build active file",
            "miDebuggerPath": "/usr/bin/gdb"
        }
    ]
}

Answer 1

launch.json文件有一个visualizerFile选项：

    {
        "name": "g++-8 build and debug active file",
        "visualizerFile": "${workspaceFolder}/path/to/file.natvis",
        "showDisplayString": true,
        ...
    },

此处还有一些文档(请参阅visualizerFile和showDisplayString表条目)：https://docs.microsoft.com/en-us/cpp/build/launch-vs-schema-reference-cpp?view=vs-2019#c-linux-properties

您可能还会对这个问题感兴趣：https://github.com/Microsoft/vscode-cpptools/issues/925