CODEWITHSUNDEEP
goidepositionmouse
Wht Mst
Wht Mst

Reputation: 11

Go lang - Get current mouse cursor position with RobotGo

I'm a beginner in Go and I want to solve a small task: to print the current coordinates of the mouse cursor to the console and update them if the mouse moves. For this, I took the library robotgo, downloaded it using "go get github.com/go-vgo/robotgo", then "go get -u github.com/go-vgo/robotgo", and imported it using import "github.com/go-vgo/robotgo". Here's the code I wrote:

package main

import (
    "fmt"
    "github.com/go-vgo/robotgo"
)

func main() {
    for {
        x, y := robotgo.GetMousePos()
        fmt.Printf("Current position X=%d, Y=%d", x, y)
        if x == 540 && y == 960 {
            fmt.Println("Cursor @center")
        }

        robotgo.Move(x, y)
    }
}

But I'm getting errors:

# github.com/robotn/gohook
C:\CODING\SDK\GO-PATH\pkg\mod\github.com\robotn\[email protected]\event.go:51:10: undefined: addEvent
C:\CODING\SDK\GO-PATH\pkg\mod\github.com\robotn\[email protected]\event.go:62:7: undefined: Start
C:\CODING\SDK\GO-PATH\pkg\mod\github.com\robotn\[email protected]\event.go:75:18: undefined: KeyHold
C:\CODING\SDK\GO-PATH\pkg\mod\github.com\robotn\[email protected]\event.go:83:18: undefined: KeyUp
C:\CODING\SDK\GO-PATH\pkg\mod\github.com\robotn\[email protected]\event.go:95:22: undefined: KeyUp
C:\CODING\SDK\GO-PATH\pkg\mod\github.com\robotn\[email protected]\event.go:96:4: undefined: End
C:\CODING\SDK\GO-PATH\pkg\mod\github.com\robotn\[email protected]\event.go:113:7: undefined: Start
C:\CODING\SDK\GO-PATH\pkg\mod\github.com\robotn\[email protected]\event.go:121:17: undefined: MouseMove
C:\CODING\SDK\GO-PATH\pkg\mod\github.com\robotn\[email protected]\event.go:128:22: undefined: MouseDown
C:\CODING\SDK\GO-PATH\pkg\mod\github.com\robotn\[email protected]\event.go:129:4: undefined: End
C:\CODING\SDK\GO-PATH\pkg\mod\github.com\robotn\[email protected]\event.go:129:4: too many errors

UPD 16.03.2023 problem was solved by completely removing the library and its dependencies, and then reinstalling it.

Upvotes: 1

Views: 1569

Answers (2)

Jason Cameron
Jason Cameron

Reputation: 29

I had this exact problem so I made a library to fix that since I needed a cross-platform solution https://github.com/JasonLovesDoggo/displayindex

It uses compile time build checks (//go:build) along with CGO to interface with native system APIs

each platform is unique but for example, on windows you can get the cursor position with the following code

func getCursorPosition() (x, y int, err error) {
    user32 := syscall.NewLazyDLL("user32.dll")
    getCursorPos := user32.NewProc("GetCursorPos")
    pt := POINT{}
    ret, _, _ := getCursorPos.Call(uintptr(unsafe.Pointer(&pt)))
    if ret == 0 {
        return 0, 0, fmt.Errorf("GetCursorPos failed")
    }
    return int(pt.X), int(pt.Y), nil
}

On linux (x11), you can call the X11 C library then call the XQueryPointer method and on darwin, you can use the CoreGraphics Framework

Upvotes: 1

Carson
Carson

Reputation: 8078

For windows, use the system API :GetCursorPos

//go:build windows

package main

import (
    "fmt"
    "syscall"
    "unsafe"
)

func main() {
    userDll := syscall.NewLazyDLL("user32.dll")
    getWindowRectProc := userDll.NewProc("GetCursorPos")
    type POINT struct {
        X, Y int32
    }
    var pt POINT
    _, _, eno := syscall.SyscallN(getWindowRectProc.Addr(), uintptr(unsafe.Pointer(&pt)))
    if eno != 0 {
        fmt.Println(eno)
    }
    fmt.Printf("[cursor.Pos] X:%d Y:%d\n", pt.X, pt.Y)
}

Upvotes: 2

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