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use SendInput instead of keybd_event #50

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use SendInput instead of keybd_event #50

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1 change: 1 addition & 0 deletions go.mod
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Original file line number Diff line number Diff line change
@@ -1,3 +1,4 @@
module github.com/micmonay/keybd_event

go 1.16

48 changes: 42 additions & 6 deletions keybd_windows.go
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Original file line number Diff line number Diff line change
Expand Up @@ -2,10 +2,13 @@ package keybd_event

import (
"syscall"
"unsafe"
)

var dll = syscall.NewLazyDLL("user32.dll")
var procKeyBd = dll.NewProc("keybd_event")
var (
user32 = syscall.NewLazyDLL("user32.dll")
procSendInput = user32.NewProc("SendInput")
)

// Press key(s)
func (k *KeyBonding) Press() error {
Expand Down Expand Up @@ -37,7 +40,7 @@ func (k *KeyBonding) Press() error {
return nil
}

//Release key(s)
// Release key(s)
func (k *KeyBonding) Release() error {
if k.hasALT {
upKey(_VK_ALT)
Expand Down Expand Up @@ -76,6 +79,7 @@ func (k *KeyBonding) Launching() error {
err = k.Release()
return err
}

func downKey(key int) {
flag := 0
if key < 0xFFF { // Detect if the key code is virtual or no
Expand All @@ -84,7 +88,7 @@ func downKey(key int) {
key -= 0xFFF
}
vkey := key + 0x80
procKeyBd.Call(uintptr(key), uintptr(vkey), uintptr(flag), 0)
sendInput(key, vkey, flag)
}
func upKey(key int) {
flag := _KEYEVENTF_KEYUP
Expand All @@ -94,8 +98,26 @@ func upKey(key int) {
key -= 0xFFF
}
vkey := key + 0x80
procKeyBd.Call(uintptr(key), uintptr(vkey), uintptr(flag), 0)
sendInput(key, vkey, flag)
}

func sendInput(key int, vkey int, flag int) {
var i input
i.inputType = _INPUT_KEYBOARD
i.ki = keyboardInput{
wVk: uint16(key),
wScan: uint16(vkey),
dwFlags: uint32(flag),
time: 0,
dwExtraInfo: 0,
}
procSendInput.Call(
uintptr(1),
uintptr(unsafe.Pointer(&i)),
uintptr(unsafe.Sizeof(i)),
)
}

func initKeyBD() error { return nil }

const (
Expand All @@ -111,6 +133,7 @@ const (
_VK_RWIN = 0x5C + 0xFFF
_KEYEVENTF_KEYUP = 0x0002
_KEYEVENTF_SCANCODE = 0x0008
_INPUT_KEYBOARD = 1
)
const (
VK_SP1 = 41
Expand Down Expand Up @@ -188,7 +211,7 @@ const (
VK_F22 = 0x85 + 0xFFF
VK_F23 = 0x86 + 0xFFF
VK_F24 = 0x87 + 0xFFF

VK_NUMLOCK = 69
VK_SCROLLLOCK = 70
VK_RESERVED = 0
Expand Down Expand Up @@ -308,3 +331,16 @@ const (
VK_PA1 = 0xFD + 0xFFF
VK_OEM_CLEAR = 0xFE + 0xFFF
)

type input struct {
inputType uint32
ki keyboardInput
padding uint64
}
type keyboardInput struct {
wVk uint16
wScan uint16
dwFlags uint32
time uint32
dwExtraInfo uint64
}