You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: key.go
    path of file: ./repos/darktile/vendor/golang.org/x/exp/shiny/driver/internal/win32
    
    the code of the file until where you have to start completion: // Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

//go:build windows
// +build windows

package win32

import (
	"fmt"
	"syscall"
	"unicode/utf16"

	"golang.org/x/mobile/event/key"
)

// convVirtualKeyCode converts a Win32 virtual key code number
// into the standard keycodes used by the key package.
func convVirtualKeyCode(vKey uint32) key.Code {
	switch vKey {
	case 0x01: // VK_LBUTTON left mouse button
	case 0x02: // VK_RBUTTON right mouse button
	case 0x03: // VK_CANCEL control-break processing
	case 0x04: // VK_MBUTTON middle mouse button
	case 0x05: // VK_XBUTTON1 X1 mouse button
	case 0x06: // VK_XBUTTON2 X2 mouse button
	case 0x08: // VK_BACK
		return key.CodeDeleteBackspace
	case 0x09: // VK_TAB
		return key.CodeTab
	case 0x0C: // VK_CLEAR
	case 0x0D: // VK_RETURN
		return key.CodeReturnEnter
	case 0x10: // VK_SHIFT
		return key.CodeLeftShift
	case 0x11: // VK_CONTROL
		return key.CodeLeftControl
	case 0x12: // VK_MENU
		return key.CodeLeftAlt
	case 0x13: // VK_PAUSE
	case 0x14: // VK_CAPITAL
		return key.CodeCapsLock
	case 0x15: // VK_KANA, VK_HANGUEL, VK_HANGUL
	case 0x17: // VK_JUNJA
	case 0x18: // VK_FINA, L
	case 0x19: // VK_HANJA, VK_KANJI
	case 0x1B: // VK_ESCAPE
		return key.CodeEscape
	case 0x1C: // VK_CONVERT
	case 0x1D: // VK_NONCONVERT
	case 0x1E: // VK_ACCEPT
	case 0x1F: // VK_MODECHANGE
	case 0x20: // VK_SPACE
		return key.CodeSpacebar
	case 0x21: // VK_PRIOR
		return key.CodePageUp
	case 0x22: // VK_NEXT
		return key.CodePageDown
	case 0x23: // VK_END
		return key.CodeEnd
	case 0x24: // VK_HOME
		return key.CodeHome
	case 0x25: // VK_LEFT
		return key.CodeLeftArrow
	case 0x26: // VK_UP
		return key.CodeUpArrow
	case 0x27: // VK_RIGHT
		return key.CodeRightArrow
	case 0x28: // VK_DOWN
		return key.CodeDownArrow
	case 0x29: // VK_SELECT
	case 0x2A: // VK_PRINT
	case 0x2B: // VK_EXECUTE
	case 0x2C: // VK_SNAPSHOT
	case 0x2D: // VK_INSERT
	case 0x2E: // VK_DELETE
		return key.CodeDeleteForward
	case 0x2F: // VK_HELP
		return key.CodeHelp
	case 0x30:
		return key.Code0
	case 0x31:
		return key.Code1
	case 0x32:
		return key.Code2
	case 0x33:
		return key.Code3
	case 0x34:
		return key.Code4
	case 0x35:
		return key.Code5
	case 0x36:
		return key.Code6
	case 0x37:
		return key.Code7
	case 0x38:
		return key.Code8
	case 0x39:
		return key.Code9
	case 0x41:
		return key.CodeA
	case 0x42:
		return key.CodeB
	case 0x43:
		return key.CodeC
	case 0x44:
		return key.CodeD
	case 0x45:
		return key.CodeE
	case 0x46:
		return key.CodeF
	case 0x47:
		return key.CodeG
	case 0x48:
		return key.CodeH
	case 0x49:
		return key.CodeI
	case 0x4A:
		return key.CodeJ
	case 0x4B:
		return key.CodeK
	case 0x4C:
		return key.CodeL
	case 0x4D:
		return key.CodeM
	case 0x4E:
		return key.CodeN
	case 0x4F:
		return key.CodeO
	case 0x50:
		return key.CodeP
	case 0x51:
		return key.CodeQ
	case 0x52:
		return key.CodeR
	case 0x53:
		return key.CodeS
	case 0x54:
		return key.CodeT
	case 0x55:
		return key.CodeU
	case 0x56:
		return key.CodeV
	case 0x57:
		return key.CodeW
	case 0x58:
		return key.CodeX
	case 0x59:
		return key.CodeY
	case 0x5A:
		return key.CodeZ
	case 0x5B: // VK_LWIN
		return key.CodeLeftGUI
	case 0x5C: // VK_RWIN
		return key.CodeRightGUI
	case 0x5D: // VK_APPS
	case 0x5F: // VK_SLEEP
	case 0x60: // VK_NUMPAD0
		return key.CodeKeypad0
	case 0x61: // VK_NUMPAD1
		return key.CodeKeypad1
	case 0x62: // VK_NUMPAD2
		return key.CodeKeypad2
	case 0x63: // VK_NUMPAD3
		return key.CodeKeypad3
	case 0x64: // VK_NUMPAD4
		return key.CodeKeypad4
	case 0x65: // VK_NUMPAD5
		return key.CodeKeypad5
	case 0x66: // VK_NUMPAD6
		return key.CodeKeypad6
	case 0x67: // VK_NUMPAD7
		return key.CodeKeypad7
	case 0x68: // VK_NUMPAD8
		return key.CodeKeypad8
	case 0x69: // VK_NUMPAD9
		return key.CodeKeypad9
	case 0x6A: // VK_MULTIPLY
		return key.CodeKeypadAsterisk
	case 0x6B: // VK_ADD
		return key.CodeKeypadPlusSign
	case 0x6C: // VK_SEPARATOR
	case 0x6D: // VK_SUBTRACT
		return key.CodeKeypadHyphenMinus
	case 0x6E: // VK_DECIMAL
		return key.CodeFullStop
	case 0x6F: // VK_DIVIDE
		return key.CodeKeypadSlash
	case 0x70: // VK_F1
		return key.CodeF1
	case 0x71: // VK_F2
		return key.CodeF2
	case 0x72: // VK_F3
		return key.CodeF3
	case 0x73: // VK_F4
		return key.CodeF4
	case 0x74: // VK_F5
		return key.CodeF5
	case 0x75: // VK_F6
		return key.CodeF6
	case 0x76: // VK_F7
		return key.CodeF7
	case 0x77: // VK_F8
		return key.CodeF8
	case 0x78: // VK_F9
		return key.CodeF9
	case 0x79: // VK_F10
		return key.CodeF10
	case 0x7A: // VK_F11
		return key.CodeF11
	case 0x7B: // VK_F12
		return key.CodeF12
	case 0x7C: // VK_F13
		return key.CodeF13
	case 0x7D: // VK_F14
		return key.CodeF14
	case 0x7E: // VK_F15
		return key.CodeF15
	case 0x7F: // VK_F16
		return k
    
func convVirtualKeyCode(vKey uint32) key.Code {
	switch vKey {
	case 0x01: // VK_LBUTTON left mouse button
	case 0x02: // VK_RBUTTON right mouse button
	case 0x03: // VK_CANCEL control-break processing
	case 0x04: // VK_MBUTTON middle mouse button
	case 0x05: // VK_XBUTTON1 X1 mouse button
	case 0x06: // VK_XBUTTON2 X2 mouse button
	case 0x08: // VK_BACK
		return key.CodeDeleteBackspace
	case 0x09: // VK_TAB
		return key.CodeTab
	case 0x0C: // VK_CLEAR
	case 0x0D: // VK_RETURN
		return key.CodeReturnEnter
	case 0x10: // VK_SHIFT
		return key.CodeLeftShift
	case 0x11: // VK_CONTROL
		return key.CodeLeftControl
	case 0x12: // VK_MENU
		return key.CodeLeftAlt
	case 0x13: // VK_PAUSE
	case 0x14: // VK_CAPITAL
		return key.CodeCapsLock
	case 0x15: // VK_KANA, VK_HANGUEL, VK_HANGUL
	case 0x17: // VK_JUNJA
	case 0x18: // VK_FINA, L
	case 0x19: // VK_HANJA, VK_KANJI
	case 0x1B: // VK_ESCAPE
		return key.CodeEscape
	case 0x1C: // VK_CONVERT
	case 0x1D: // VK_NONCONVERT
	case 0x1E: // VK_ACCEPT
	case 0x1F: // VK_MODECHANGE
	case 0x20: // VK_SPACE
		return key.CodeSpacebar
	case 0x21: // VK_PRIOR
		return key.CodePageUp
	case 0x22: // VK_NEXT
		return key.CodePageDown
	case 0x23: // VK_END
		return key.CodeEnd
	case 0x24: // VK_HOME
		return key.CodeHome
	case 0x25: // VK_LEFT
		return key.CodeLeftArrow
	case 0x26: // VK_UP
		return key.CodeUpArrow
	case 0x27: // VK_RIGHT
		return key.CodeRightArrow
	case 0x28: // VK_DOWN
		return key.CodeDownArrow
	case 0x29: // VK_SELECT
	case 0x2A: // VK_PRINT
	case 0x2B: // VK_EXECUTE
	case 0x2C: // VK_SNAPSHOT
	case 0x2D: // VK_INSERT
	case 0x2E: // VK_DELETE
		return key.CodeDeleteForward
	case 0x2F: // VK_HELP
		return key.CodeHelp
	case 0x30:
		return key.Code0
	case 0x31:
		return key.Code1
	case 0x32:
		return key.Code2
	case 0x33:
		return key.Code3
	case 0x34:
		return key.Code4
	case 0x35:
		return key.Code5
	case 0x36:
		return key.Code6
	case 0x37:
		return key.Code7
	case 0x38:
		return key.Code8
	case 0x39:
		return key.Code9
	case 0x41:
		return key.CodeA
	case 0x42:
		return key.CodeB
	case 0x43:
		return key.CodeC
	case 0x44:
		return key.CodeD
	case 0x45:
		return key.CodeE
	case 0x46:
		return key.CodeF
	case 0x47:
		return key.CodeG
	case 0x48:
		return key.CodeH
	case 0x49:
		return key.CodeI
	case 0x4A:
		return key.CodeJ
	case 0x4B:
		return key.CodeK
	case 0x4C:
		return key.CodeL
	case 0x4D:
		return key.CodeM
	case 0x4E:
		return key.CodeN
	case 0x4F:
		return key.CodeO
	case 0x50:
		return key.CodeP
	case 0x51:
		return key.CodeQ
	case 0x52:
		return key.CodeR
	case 0x53:
		return key.CodeS
	case 0x54:
		return key.CodeT
	case 0x55:
		return key.CodeU
	case 0x56:
		return key.CodeV
	case 0x57:
		return key.CodeW
	case 0x58:
		return key.CodeX
	case 0x59:
		return key.CodeY
	case 0x5A:
		return key.CodeZ
	case 0x5B: // VK_LWIN
		return key.CodeLeftGUI
	case 0x5C: // VK_RWIN
		return key.CodeRightGUI
	case 0x5D: // VK_APPS
	case 0x5F: // VK_SLEEP
	case 0x60: // VK_NUMPAD0
		return key.CodeKeypad0
	case 0x61: // VK_NUMPAD1
		return key.CodeKeypad1
	case 0x62: // VK_NUMPAD2
		return key.CodeKeypad2
	case 0x63: // VK_NUMPAD3
		return key.CodeKeypad3
	case 0x64: // VK_NUMPAD4
		return key.CodeKeypad4
	case 0x65: // VK_NUMPAD5
		return key.CodeKeypad5
	case 0x66: // VK_NUMPAD6
		return key.CodeKeypad6
	case 0x67: // VK_NUMPAD7
		return key.CodeKeypad7
	case 0x68: // VK_NUMPAD8
		return key.CodeKeypad8
	case 0x69: // VK_NUMPAD9
		return key.CodeKeypad9
	case 0x6A: // VK_MULTIPLY
		return key.CodeKeypadAsterisk
	case 0x6B: // VK_ADD
		return key.CodeKeypadPlusSign
	case 0x6C: // VK_SEPARATOR
	case 0x6D: // VK_SUBTRACT
		return key.CodeKeypadHyphenMinus
	case 0x6E: // VK_DECIMAL
		return key.CodeFullStop
	case 0x6F: // VK_DIVIDE
		return key.CodeKeypadSlash
	case 0x70: // VK_F1
		return key.CodeF1
	case 0x71: // VK_F2
		return key.CodeF2
	case 0x72: // VK_F3
		return key.CodeF3
	case 0x73: // VK_F4
		return key.CodeF4
	case 0x74: // VK_F5
		return key.CodeF5
	case 0x75: // VK_F6
		return key.CodeF6
	case 0x76: // VK_F7
		return key.CodeF7
	case 0x77: // VK_F8
		return key.CodeF8
	case 0x78: // VK_F9
		return key.CodeF9
	case 0x79: // VK_F10
		return key.CodeF10
	case 0x7A: // VK_F11
		return key.CodeF11
	case 0x7B: // VK_F12
		return key.CodeF12
	case 0x7C: // VK_F13
		return key.CodeF13
	case 0x7D: // VK_F14
		return key.CodeF14
	case 0x7E: // VK_F15
		return key.CodeF15
	case 0x7F: // VK_F16
		return key.CodeF16
	case 0x80: // VK_F17
		return key.CodeF17
	case 0x81: // VK_F18
		return key.CodeF18
	case 0x82: // VK_F19
		return key.CodeF19
	case 0x83: // VK_F20
		return key.CodeF20
	case 0x84: // VK_F21
		return key.CodeF21
	case 0x85: // VK_F22
		return key.CodeF22
	case 0x86: // VK_F23
		return key.CodeF23
	case 0x87: // VK_F24
		return key.CodeF24
	case 0x90: // VK_NUMLOCK
		return key.CodeKeypadNumLock
	case 0x91: // VK_SCROLL
	case 0xA0: // VK_LSHIFT
		return key.CodeLeftShift
	case 0xA1: // VK_RSHIFT
		return key.CodeRightShift
	case 0xA2: // VK_LCONTROL
		return key.CodeLeftControl
	case 0xA3: // VK_RCONTROL
		return key.CodeRightControl
	case 0xA4: // VK_LMENU
	case 0xA5: // VK_RMENU
	case 0xA6: // VK_BROWSER_BACK
	case 0xA7: // VK_BROWSER_FORWARD
	case 0xA8: // VK_BROWSER_REFRESH
	case 0xA9: // VK_BROWSER_STOP
	case 0xAA: // VK_BROWSER_SEARCH
	case 0xAB: // VK_BROWSER_FAVORITES
	case 0xAC: // VK_BROWSER_HOME
	case 0xAD: // VK_VOLUME_MUTE
		return key.CodeMute
	case 0xAE: // VK_VOLUME_DOWN
		return key.CodeVolumeDown
	case 0xAF: // VK_VOLUME_UP
		return key.CodeVolumeUp
	case 0xB0: // VK_MEDIA_NEXT_TRACK
	case 0xB1: // VK_MEDIA_PREV_TRACK
	case 0xB2: // VK_MEDIA_STOP
	case 0xB3: // VK_MEDIA_PLAY_PAUSE
	case 0xB4: // VK_LAUNCH_MAIL
	case 0xB5: // VK_LAUNCH_MEDIA_SELECT
	case 0xB6: // VK_LAUNCH_APP1
	case 0xB7: // VK_LAUNCH_APP2
	case 0xBA: // VK_OEM_1 ';:'
		return key.CodeSemicolon
	case 0xBB: // VK_OEM_PLUS '+'
		return key.CodeEqualSign
	case 0xBC: // VK_OEM_COMMA ','
		return key.CodeComma
	case 0xBD: // VK_OEM_MINUS '-'
		return key.CodeHyphenMinus
	case 0xBE: // VK_OEM_PERIOD '.'
		return key.CodeFullStop
	case 0xBF: // VK_OEM_2 '/?'
		return key.CodeSlash
	case 0xC0: // VK_OEM_3 '`~'
		return key.CodeGraveAccent
	case 0xDB: // VK_OEM_4 '[{'
		return key.CodeLeftSquareBracket
	case 0xDC: // VK_OEM_5 '\|'
		return key.CodeBackslash
	case 0xDD: // VK_OEM_6 ']}'
		return key.CodeRightSquareBracket
	case 0xDE: // VK_OEM_7 'single-quote/double-quote'
		return key.CodeApostrophe
	case 0xDF: // VK_OEM_8
		return key.CodeUnknown
	case 0xE2: // VK_OEM_102
	case 0xE5: // VK_PROCESSKEY
	case 0xE7: // VK_PACKET
	case 0xF6: // VK_ATTN
	case 0xF7: // VK_CRSEL
	case 0xF8: // VK_EXSEL
	case 0xF9: // VK_EREOF
	case 0xFA: // VK_PLAY
	case 0xFB: // VK_ZOOM
	case 0xFC: // VK_NONAME
	case 0xFD: // VK_PA1
	case 0xFE: // VK_OEM_CLEAR
	}
	return key.CodeUnknown
}