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Golang fmt.Print("\033c") and fmt.Print("\x1bc") are not clearing screen(ANSI Escape code not working) how to fix?

Whenever I run fmt.Print("\033c") in Go on Windows cmd it does not clear screen but prints c whenever I do console.log("\033c") in javascript it works fine.

According to the following links this should have worked: https://en.wikipedia.org/wiki/ANSI_escape_code#Windows

https://learn.microsoft.com/en-us/windows/console/console-virtual-terminal-sequences#samples

I have tried logging it in javascript and it works fine I also tried adding a \n character to the end which printed c and changing it to \x1bc which also just printed: c

the following all prints: c on windows cmd


func main() {
  fmt.Print("\033c")
  fmt.Print("\033c\n")
  fmt.Print("\x1bc")
  fmt.Print("\x1bc\n")
  fmt.Println("\033c")
  fmt.Println("\x1bc")
}

I expected that it would just clear the screen as in javascript but for some reason it doesn't

To clarify I am talking about that the ANSI escape code is not working.

like image 546
Ian.V Avatar asked Nov 24 '25 13:11

Ian.V


1 Answers

The problem was that windows needs the ENABLE_VIRTUAL_TERMINAL_PROCESSING(0x0004) console flag I fixed it by using the following code to add the flag to the console:

package main

// #include "Windows.h"
import "C"
import "fmt"

func main() {
    // Needed for getting handle and getting current console mode
    var mode C.DWORD
    handle := C.GetStdHandle(C.STD_OUTPUT_HANDLE)
    C.GetConsoleMode(handle, &mode)

    // Enable Virtual Terminal Processing by adding the flag to the current mode
    C.SetConsoleMode(handle, mode|0x0004)
    fmt.Print("\033c")
}

SetConsoleMode

===EDIT===

Like Matmarbon mentioned in the comments // #include "Windows.h" line is nessecary and you need to have an gcc installed

like image 171
Ian.V Avatar answered Nov 26 '25 13:11

Ian.V



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