Description
What version of Go are you using (go version)?
$ go version go version go1.16 windows/amd64
Does this issue reproduce with the latest release?
Yes. It also happens to me on Go 1.15.4
What operating system and processor architecture are you using (go env)?
go env Output
$ go env set GO111MODULE= set GOARCH=amd64 set GOBIN= set GOCACHE=C:\Users\lenni\AppData\Local\go-build set GOENV=C:\Users\lenni\AppData\Roaming\go\env set GOEXE=.exe set GOFLAGS= set GOHOSTARCH=amd64 set GOHOSTOS=windows set GOINSECURE= set GOMODCACHE=C:\Users\lenni\go\pkg\mod set GONOPROXY= set GONOSUMDB= set GOOS=windows set GOPATH=C:\Users\lenni\go set GOPRIVATE= set GOPROXY=https://proxy.golang.org,direct set GOROOT=C:\Users\lenni\scoop\apps\go\current set GOSUMDB=sum.golang.org set GOTMPDIR= set GOTOOLDIR=C:\Users\lenni\scoop\apps\go\current\pkg\tool\windows_amd64 set GOVCS= set GOVERSION=go1.16 set GCCGO=gccgo set AR=ar set CC=gcc set CXX=g++ set CGO_ENABLED=1 set GOMOD=D:\Programmieren\termios\go.mod set CGO_CFLAGS=-g -O2 set CGO_CPPFLAGS= set CGO_CXXFLAGS=-g -O2 set CGO_FFLAGS=-g -O2 set CGO_LDFLAGS=-g -O2 set PKG_CONFIG=pkg-config set GOGCCFLAGS=-m64 -mthreads -fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -fdebug-prefix-map=C:\Users\lenni\AppData\Local\Temp\go-build2957794104=/tmp/go-build -gno-record-gcc-switches
What did you do?
I am currently writing a simple command-line editor in Go. For this, I want my program to be able to read every of the user's keypresses. For this, I think I have to set the Console Mode to only ENABLE_WINDOW_INPUT.
Here is my code (sorry for inline code, I think Go Playground is not really applicable):
package main
import "golang.org/x/sys/windows"
var in windows.Handle
var oldMode uint32
func main() {
err := SetRaw()
if err != nil {
panic(err)
}
buf := make([]uint16, 20)
Read(buf)
os.Stdout.Write([]byte("Read"))
Close()
}
func SetRaw() error {
var err error
in, err = windows.Open("CONIN$", windows.O_RDWR, 0)
if err != nil {
return err
}
err = windows.GetConsoleMode(in, &oldMode)
err = windows.SetConsoleMode(in, windows.ENABLE_WINDOW_INPUT)
if err != nil {
return err
}
return nil
}
// Read reads a single keypress
func Read(p []uint16) (int, error) {
//return windows.Read(in, p)
var tmp_arg uint32
var inputControl byte = 0
err := windows.ReadConsole(in, &p[0], 1, &tmp_arg, &inputControl)
return 0, err
}
func Close() {
windows.SetConsoleMode(in, oldMode)
windows.Close(in)
}
What did you expect to see?
I'd expect this program to start, and close after I pressed an arrow key.
What did you see instead?
The program starts, but does only exit if I press a letter key (a-z, 0-9). Special keys as F1 through F12, the arrow keys or home/end/pgup/pgdown don't work.
If I set the console mode to ENABLE_WINDOW_INPUT | ENABLE_VIRTUAL_TERMINAL_INPUT instead, the behaviour is as expected, but then I don't have support on older Windows devices (7, 8, ...)
Thanks for any help in advance.