How Can I Easily Query WMI from Go?

Querying WMI from Go

To execute WMI queries from Go, utilizing DLL calls is feasible. However, navigating the complexities of COM-based Windows APIs can be daunting. Fortunately, there are alternative solutions that provide a more straightforward approach.

One recommended solution is to leverage the GitHub repository by StackExchange/wmi. This package encapsulates the techniques outlined in the accepted answer, offering a convenient interface for WMI queries.

Using the StackExchange/wmi Package

Here's a code snippet that demonstrates how to use the StackExchange/wmi package:

package main

import (
        "context"
        "fmt"
        "log"

        "github.com/StackExchange/wmi"
)

func main() {
        query := wmi.CreateQuery(&wmi.Query{
                Namespace:  "root\cimv2",
                Query:      "SELECT * FROM Win32_Process",
                Projection: []string{"Caption", "ProcessId"},
        })
        processes, err := query.Execute(context.Background())
        if err != nil {
                log.Fatal(err)
        }
        fmt.Printf("%-5s%-20v", "PID", "Name")
        fmt.Println()
        for _, p := range processes {
                fmt.Printf("%-5v%-20v\n", p.Properties["ProcessId"].Value.Value().(uint32), p.Properties["Caption"].Value.Value().(string))
        }
}

This example will fetch information about running processes, including their process IDs and names. The StackExchange/wmi package handles the intricacies of COM and WMI, simplifying the querying process for Go developers.

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