update

go.mod

@@ -2,4 +2,4 @@ module b612.me/win32api
 
 go 1.16
 
-require golang.org/x/sys v0.0.0-20220310020820-b874c991c1a5
+require golang.org/x/sys v0.18.0

go.sum

@@ -1,2 +1,2 @@
-golang.org/x/sys v0.0.0-20220310020820-b874c991c1a5 h1:y/woIyUBFbpQGKS0u1aHF/40WUDnek3fPOyD08H5Vng=
-golang.org/x/sys v0.0.0-20220310020820-b874c991c1a5/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.18.0 h1:DBdB3niSjOA/O0blCZBqDefyWNYveAYMNF1Wum0DYQ4=
+golang.org/x/sys v0.18.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=

kernel32.go

@@ -282,3 +282,120 @@ func DeviceIoControlPtr(hDevice HANDLE, dwIoControlCode DWORD, lpInBuffer uintpt
 	}
 	return true, nil
 }
+
+func GlobalLock(hMem HGLOBAL) (unsafe.Pointer, error) {
+	kernel32, err := syscall.LoadLibrary("kernel32.dll")
+	if err != nil {
+		return nil, err
+	}
+	defer syscall.FreeLibrary(kernel32)
+	gl, err := syscall.GetProcAddress(syscall.Handle(kernel32), "GlobalLock")
+	if err != nil {
+		return nil, err
+	}
+	r, _, errno := syscall.Syscall(gl, 1, uintptr(hMem), 0, 0)
+	if r == 0 {
+		if errno != 0 {
+			return nil, error(errno)
+		}
+		return nil, syscall.EINVAL
+	}
+	return unsafe.Pointer(r), nil
+}
+
+func GlobalUnlock(hMem HGLOBAL) error {
+	kernel32, err := syscall.LoadLibrary("kernel32.dll")
+	if err != nil {
+		return err
+	}
+	defer syscall.FreeLibrary(kernel32)
+	gu, err := syscall.GetProcAddress(syscall.Handle(kernel32), "GlobalUnlock")
+	if err != nil {
+		return err
+	}
+	r, _, errno := syscall.Syscall(gu, 1, uintptr(hMem), 0, 0)
+	if r == 0 {
+		if errno != 0 {
+			return error(errno)
+		}
+		return syscall.EINVAL
+	}
+	return nil
+}
+
+func GlobalSize(hMem HGLOBAL) (DWORD, error) {
+	kernel32, err := syscall.LoadLibrary("kernel32.dll")
+	if err != nil {
+		return 0, err
+	}
+	defer syscall.FreeLibrary(kernel32)
+	gs, err := syscall.GetProcAddress(syscall.Handle(kernel32), "GlobalSize")
+	if err != nil {
+		return 0, err
+	}
+	r, _, errno := syscall.Syscall(gs, 1, uintptr(hMem), 0, 0)
+	if r == 0 {
+		if errno != 0 {
+			return 0, error(errno)
+		}
+		return 0, syscall.EINVAL
+	}
+	return DWORD(r), nil
+}
+
+func GlobalAlloc(uFlags DWORD, dwBytes uintptr) (HGLOBAL, error) {
+	kernel32, err := syscall.LoadLibrary("kernel32.dll")
+	if err != nil {
+		return 0, err
+	}
+	defer syscall.FreeLibrary(kernel32)
+	ga, err := syscall.GetProcAddress(syscall.Handle(kernel32), "GlobalAlloc")
+	if err != nil {
+		return 0, err
+	}
+	r, _, errno := syscall.Syscall(ga, 2, uintptr(uFlags), dwBytes, 0)
+	if r == 0 {
+		if errno != 0 {
+			return 0, error(errno)
+		}
+		return 0, syscall.EINVAL
+	}
+	return HGLOBAL(r), nil
+}
+
+func GlobalFree(hMem HGLOBAL) error {
+	kernel32, err := syscall.LoadLibrary("kernel32.dll")
+	if err != nil {
+		return err
+	}
+	defer syscall.FreeLibrary(kernel32)
+	gf, err := syscall.GetProcAddress(syscall.Handle(kernel32), "GlobalFree")
+	if err != nil {
+		return err
+	}
+	r, _, errno := syscall.Syscall(gf, 1, uintptr(hMem), 0, 0)
+	if r == 0 {
+		if errno != 0 {
+			return error(errno)
+		}
+		return syscall.EINVAL
+	}
+	return nil
+}
+
+func RtlMoveMemory(Destination, Source unsafe.Pointer, Length uintptr) error {
+	kernel32, err := syscall.LoadLibrary("kernel32.dll")
+	if err != nil {
+		return err
+	}
+	defer syscall.FreeLibrary(kernel32)
+	rmv, err := syscall.GetProcAddress(syscall.Handle(kernel32), "RtlMoveMemory")
+	if err != nil {
+		return err
+	}
+	_, _, errno := syscall.Syscall(rmv, 3, uintptr(unsafe.Pointer(Destination)), uintptr(unsafe.Pointer(Source)), Length)
+	if errno != 0 {
+		return error(errno)
+	}
+	return nil
+}

kernel32typedef.go

@@ -113,3 +113,19 @@ type FILE_ID_DESCRIPTOR struct {
 	ObjectId       DWORDLONG
 	ExtendedFileId DWORDLONG
 }
+
+const (
+	GMEM_MOVEABLE       = 0x0002
+	GMEM_ZEROINIT       = 0x0040
+	GMEM_DDESHARE       = 0x2000
+	GMEM_SHARE          = GMEM_DDESHARE
+	GMEM_FIXED          = 0x0000
+	GMEM_DISCARDABLE    = 0x0100
+	GMEM_NOT_BANKED     = 0x1000
+	GMEM_NOTIFY         = 0x4000
+	GMEM_LOWER          = GMEM_NOT_BANKED
+	GMEM_VALID_FLAGS    = 0x7F72
+	GMEM_INVALID_HANDLE = 0x8000
+	GHND                = (GMEM_MOVEABLE | GMEM_ZEROINIT)
+	GPTR                = (GMEM_FIXED | GMEM_ZEROINIT)
+)

shell32.go

@@ -86,3 +86,17 @@ func ShellExecuteEx(muzika *SHELLEXECUTEINFOW) error {
 	}
 	return nil
 }
+
+func DragQueryFile(hDrop HDROP, iFile DWORD, lpszFile *uint16, cch DWORD) (DWORD, error) {
+	shell32, err := syscall.LoadLibrary("shell32.dll")
+	if err != nil {
+		return 0, err
+	}
+	defer syscall.FreeLibrary(shell32)
+	dqf, err := syscall.GetProcAddress(syscall.Handle(shell32), "DragQueryFileW")
+	if err != nil {
+		return 0, err
+	}
+	r, _, _ := syscall.Syscall6(dqf, 4, uintptr(hDrop), uintptr(iFile), uintptr(unsafe.Pointer(lpszFile)), uintptr(cch), 0, 0)
+	return DWORD(r), nil
+}

user32.go

@@ -3,6 +3,7 @@ package win32api
 import (
 	"errors"
 	"syscall"
+	"unsafe"
 )
 
 func Keybd_event(keyname string, keydown bool) error {
@@ -47,3 +48,341 @@ func Keybd_event_origin(key, keyenv, down, extra uintptr) error {
 	syscall.Syscall6(keyevent, 4, key, keyenv, down, extra, 0, 0)
 	return nil
 }
+
+func OpenClipboard(hWnd HWND) error {
+	user32, err := syscall.LoadLibrary("user32.dll")
+	if err != nil {
+		return errors.New("Can't Load User32 API")
+	}
+	defer syscall.FreeLibrary(user32)
+	oc, err := syscall.GetProcAddress(syscall.Handle(user32), "OpenClipboard")
+	if err != nil {
+		return errors.New("Can't Load OpenClipboard API")
+	}
+	if hWnd != 0 {
+		if r, _, errno := syscall.Syscall(oc, 1, uintptr(hWnd), 0, 0); r == 0 {
+			return error(errno)
+		}
+		return nil
+	}
+	if r, _, errno := syscall.Syscall(oc, 0, 0, 0, 0); r == 0 {
+		return error(errno)
+	}
+	return nil
+}
+
+func CloseClipboard() error {
+	user32, err := syscall.LoadLibrary("user32.dll")
+	if err != nil {
+		return errors.New("Can't Load User32 API")
+	}
+	defer syscall.FreeLibrary(user32)
+	cc, err := syscall.GetProcAddress(syscall.Handle(user32), "CloseClipboard")
+	if err != nil {
+		return errors.New("Can't Load CloseClipboard API")
+	}
+	if r, _, errno := syscall.Syscall(cc, 0, 0, 0, 0); r == 0 {
+		return error(errno)
+	}
+	return nil
+}
+
+func GetClipboardData(uFormat DWORD) (HGLOBAL, error) {
+	user32, err := syscall.LoadLibrary("user32.dll")
+	if err != nil {
+		return 0, errors.New("Can't Load User32 API")
+	}
+	defer syscall.FreeLibrary(user32)
+	gcd, err := syscall.GetProcAddress(syscall.Handle(user32), "GetClipboardData")
+	if err != nil {
+		return 0, errors.New("Can't Load GetClipboardData API")
+	}
+	r, _, errno := syscall.Syscall(gcd, 1, uintptr(uFormat), 0, 0)
+	if r == 0 {
+		return 0, error(errno)
+	}
+	return HGLOBAL(r), nil
+}
+
+func EnumClipboardFormats(uFormat DWORD) (DWORD, error) {
+	user32, err := syscall.LoadLibrary("user32.dll")
+	if err != nil {
+		return 0, errors.New("Can't Load User32 API")
+	}
+	defer syscall.FreeLibrary(user32)
+	ecf, err := syscall.GetProcAddress(syscall.Handle(user32), "EnumClipboardFormats")
+	if err != nil {
+		return 0, errors.New("Can't Load EnumClipboardFormats API")
+	}
+	r, _, errno := syscall.Syscall(ecf, 1, uintptr(uFormat), 0, 0)
+	if r == 0 {
+		return 0, error(errno)
+	}
+	return DWORD(r), nil
+}
+
+func EnumAllClipboardFormats() ([]DWORD, error) {
+	var formats []DWORD
+	for i := 0; ; i++ {
+		format, err := EnumClipboardFormats(DWORD(i))
+		if err != nil {
+			break
+		}
+		formats = append(formats, format)
+	}
+	return formats, nil
+}
+
+func GetClipboardFormatName(uFormat DWORD) (string, error) {
+	user32, err := syscall.LoadLibrary("user32.dll")
+	if err != nil {
+		return "", errors.New("Can't Load User32 API")
+	}
+	defer syscall.FreeLibrary(user32)
+	gcfn, err := syscall.GetProcAddress(syscall.Handle(user32), "GetClipboardFormatNameW")
+	if err != nil {
+		return "", errors.New("Can't Load GetClipboardFormatName API")
+	}
+	var buffer [256]uint16
+	r, _, errno := syscall.Syscall6(gcfn, 3, uintptr(uFormat), uintptr(unsafe.Pointer(&buffer)), uintptr(len(buffer)), 0, 0, 0)
+	if r == 0 {
+		return "", error(errno)
+	}
+	return syscall.UTF16ToString(buffer[:]), nil
+}
+
+func RegisterClipboardFormat(lpszFormat string) DWORD {
+	user32, err := syscall.LoadLibrary("user32.dll")
+	if err != nil {
+		return 0
+	}
+	defer syscall.FreeLibrary(user32)
+	rcf, err := syscall.GetProcAddress(syscall.Handle(user32), "RegisterClipboardFormatW")
+	if err != nil {
+		return 0
+	}
+	r, _, _ := syscall.Syscall(rcf, 1, uintptr(unsafe.Pointer(syscall.StringToUTF16Ptr(lpszFormat))), 0, 0)
+	return DWORD(r)
+}
+
+func EmptyClipboard() error {
+	user32, err := syscall.LoadLibrary("user32.dll")
+	if err != nil {
+		return errors.New("Can't Load User32 API")
+	}
+	defer syscall.FreeLibrary(user32)
+	ec, err := syscall.GetProcAddress(syscall.Handle(user32), "EmptyClipboard")
+	if err != nil {
+		return errors.New("Can't Load EmptyClipboard API")
+	}
+	if r, _, errno := syscall.Syscall(ec, 0, 0, 0, 0); r == 0 {
+		return error(errno)
+	}
+	return nil
+}
+
+func CountClipboardFormats() (int, error) {
+	user32, err := syscall.LoadLibrary("user32.dll")
+	if err != nil {
+		return 0, errors.New("Can't Load User32 API")
+	}
+	defer syscall.FreeLibrary(user32)
+	ccf, err := syscall.GetProcAddress(syscall.Handle(user32), "CountClipboardFormats")
+	if err != nil {
+		return 0, errors.New("Can't Load CountClipboardFormats API")
+	}
+	r, _, errno := syscall.Syscall(ccf, 0, 0, 0, 0)
+	if r == 0 {
+		return 0, error(errno)
+	}
+	return int(r), nil
+}
+
+func GetClipboardOwner() (HWND, error) {
+	user32, err := syscall.LoadLibrary("user32.dll")
+	if err != nil {
+		return 0, errors.New("Can't Load User32 API")
+	}
+	defer syscall.FreeLibrary(user32)
+	gco, err := syscall.GetProcAddress(syscall.Handle(user32), "GetClipboardOwner")
+	if err != nil {
+		return 0, errors.New("Can't Load GetClipboardOwner API")
+	}
+	r, _, errno := syscall.Syscall(gco, 0, 0, 0, 0)
+	if r == 0 {
+		return 0, error(errno)
+	}
+	return HWND(r), nil
+}
+
+func GetUpdatedClipboardFormats(lpuiFormats unsafe.Pointer, cFormats int, pcFormats unsafe.Pointer) (int, error) {
+	user32, err := syscall.LoadLibrary("user32.dll")
+	if err != nil {
+		return 0, errors.New("Can't Load User32 API")
+	}
+	defer syscall.FreeLibrary(user32)
+	gucf, err := syscall.GetProcAddress(syscall.Handle(user32), "GetUpdatedClipboardFormats")
+	if err != nil {
+		return 0, errors.New("Can't Load GetUpdatedClipboardFormats API")
+	}
+	r, _, errno := syscall.Syscall(gucf, 3, uintptr(lpuiFormats), uintptr(cFormats), uintptr(pcFormats))
+	if r == 0 {
+		return 0, error(errno)
+	}
+	return int(r), nil
+}
+
+func GetUpdatedClipboardFormatsAll() ([]DWORD, error) {
+	var res []DWORD
+	formats := make([]uint32, 32)
+	var count uint32
+	_, err := GetUpdatedClipboardFormats(unsafe.Pointer(&formats[0]), len(formats), unsafe.Pointer(&count))
+	if err != nil {
+		return nil, err
+	}
+	for i := 0; i < int(count); i++ {
+		res = append(res, DWORD(formats[i]))
+	}
+	return res, err
+}
+
+func IsClipboardFormatAvailable(uFormat DWORD) (bool, error) {
+	user32, err := syscall.LoadLibrary("user32.dll")
+	if err != nil {
+		return false, err
+	}
+	defer syscall.FreeLibrary(user32)
+	icfa, err := syscall.GetProcAddress(syscall.Handle(user32), "IsClipboardFormatAvailable")
+	if err != nil {
+		return false, err
+	}
+	r, _, _ := syscall.Syscall(icfa, 1, uintptr(uFormat), 0, 0)
+	return r != 0, nil
+}
+
+func AddClipboardFormatListener(hWnd HWND) (bool, error) {
+	user32, err := syscall.LoadLibrary("user32.dll")
+	if err != nil {
+		return false, err
+	}
+	defer syscall.FreeLibrary(user32)
+	acfl, err := syscall.GetProcAddress(syscall.Handle(user32), "AddClipboardFormatListener")
+	if err != nil {
+		return false, err
+	}
+	r, _, _ := syscall.Syscall(acfl, 1, uintptr(hWnd), 0, 0)
+	return r != 0, nil
+}
+
+func RemoveClipboardFormatListener(hWnd HWND) (bool, error) {
+	user32, err := syscall.LoadLibrary("user32.dll")
+	if err != nil {
+		return false, err
+	}
+	defer syscall.FreeLibrary(user32)
+	rcfl, err := syscall.GetProcAddress(syscall.Handle(user32), "RemoveClipboardFormatListener")
+	if err != nil {
+		return false, err
+	}
+	r, _, _ := syscall.Syscall(rcfl, 1, uintptr(hWnd), 0, 0)
+	return r != 0, nil
+}
+
+func SetClipboardData(uFormat DWORD, hMem HGLOBAL) (HGLOBAL, error) {
+	user32, err := syscall.LoadLibrary("user32.dll")
+	if err != nil {
+		return 0, errors.New("Can't Load User32 API")
+	}
+	defer syscall.FreeLibrary(user32)
+	scd, err := syscall.GetProcAddress(syscall.Handle(user32), "SetClipboardData")
+	if err != nil {
+		return 0, errors.New("Can't Load SetClipboardData API")
+	}
+	r, _, errno := syscall.Syscall(scd, 2, uintptr(uFormat), uintptr(hMem), 0)
+	if r == 0 {
+		return 0, error(errno)
+	}
+	return HGLOBAL(r), nil
+}
+
+func SetClipboardViewer(hWndNewViewer HWND) (HWND, error) {
+	user32, err := syscall.LoadLibrary("user32.dll")
+	if err != nil {
+		return 0, errors.New("Can't Load User32 API")
+	}
+	defer syscall.FreeLibrary(user32)
+	scv, err := syscall.GetProcAddress(syscall.Handle(user32), "SetClipboardViewer")
+	if err != nil {
+		return 0, errors.New("Can't Load SetClipboardViewer API")
+	}
+	r, _, errno := syscall.Syscall(scv, 1, uintptr(hWndNewViewer), 0, 0)
+	if r == 0 {
+		return 0, error(errno)
+	}
+	return HWND(r), nil
+}
+
+func GetClipboardSequenceNumber() (DWORD, error) {
+	user32, err := syscall.LoadLibrary("user32.dll")
+	if err != nil {
+		return 0, errors.New("Can't Load User32 API")
+	}
+	defer syscall.FreeLibrary(user32)
+	gcsn, err := syscall.GetProcAddress(syscall.Handle(user32), "GetClipboardSequenceNumber")
+	if err != nil {
+		return 0, errors.New("Can't Load GetClipboardSequenceNumber API")
+	}
+	r, _, errno := syscall.Syscall(gcsn, 0, 0, 0, 0)
+	if r == 0 {
+		return 0, error(errno)
+	}
+	return DWORD(r), nil
+}
+
+func CreateWindowEx(dwExStyle DWORD, lpClassName, lpWindowName string, dwStyle DWORD, x, y, nWidth, nHeight int, hWndParent HWND, hMenu HMENU, hInstance HINSTANCE, lpParam unsafe.Pointer) (HWND, error) {
+	user32, err := syscall.LoadLibrary("user32.dll")
+	if err != nil {
+		return 0, errors.New("Can't Load User32 API")
+	}
+	defer syscall.FreeLibrary(user32)
+	cwe, err := syscall.GetProcAddress(syscall.Handle(user32), "CreateWindowExW")
+	if err != nil {
+		return 0, errors.New("Can't Load CreateWindowEx API")
+	}
+	r, _, errno := syscall.Syscall12(cwe, 11, uintptr(dwExStyle), uintptr(unsafe.Pointer(syscall.StringToUTF16Ptr(lpClassName))), uintptr(unsafe.Pointer(syscall.StringToUTF16Ptr(lpWindowName))), uintptr(dwStyle), uintptr(x), uintptr(y), uintptr(nWidth), uintptr(nHeight), uintptr(hWndParent), uintptr(hMenu), uintptr(hInstance), uintptr(lpParam))
+	if r == 0 {
+		return 0, error(errno)
+	}
+	return HWND(r), nil
+}
+
+func DestoryWindow(hWnd HWND) (bool, error) {
+	user32, err := syscall.LoadLibrary("user32.dll")
+	if err != nil {
+		return false, errors.New("Can't Load User32 API")
+	}
+	defer syscall.FreeLibrary(user32)
+	dw, err := syscall.GetProcAddress(syscall.Handle(user32), "DestroyWindow")
+	if err != nil {
+		return false, errors.New("Can't Load DestroyWindow API")
+	}
+	r, _, _ := syscall.Syscall(dw, 1, uintptr(hWnd), 0, 0)
+	return r != 0, nil
+}
+
+func GetMessage(lpMsg *MSG, hWnd HWND, wMsgFilterMin, wMsgFilterMax DWORD) (DWORD, error) {
+	user32, err := syscall.LoadLibrary("user32.dll")
+	if err != nil {
+		return 0, errors.New("Can't Load User32 API")
+	}
+	defer syscall.FreeLibrary(user32)
+	gm, err := syscall.GetProcAddress(syscall.Handle(user32), "GetMessageW")
+	if err != nil {
+		return 0, errors.New("Can't Load GetMessage API")
+	}
+	r, _, errno := syscall.Syscall6(gm, 4, uintptr(unsafe.Pointer(lpMsg)), uintptr(hWnd), uintptr(wMsgFilterMin), uintptr(wMsgFilterMax), 0, 0)
+	if r == 0 {
+		return 0, error(errno)
+	}
+	return DWORD(r), nil
+}

user32_test.go

@@ -0,0 +1,78 @@
+package win32api
+
+import (
+	"fmt"
+	"syscall"
+	"testing"
+	"unsafe"
+)
+
+func TestClipboardReadText(t *testing.T) {
+	if err := OpenClipboard(0); err != nil {
+		t.Error(err)
+	}
+	formats, err := EnumAllClipboardFormats()
+	if err != nil {
+		t.Error(err)
+	}
+	tp := CF_UNICODETEXT
+	fmt.Println("lenghth", len(formats))
+	for _, f := range formats {
+		fmt.Println("Clipboard Format:", f)
+		d, e := GetClipboardFormatName(f)
+		fmt.Println("Clipboard Format Name:", d, e)
+		if d == "HTML Format" {
+			tp = RegisterClipboardFormat("HTML Format")
+			fmt.Println("HTML Format:", tp)
+		}
+		if d == "DataObject" {
+			tp = f
+			fmt.Println("DataObject:", tp)
+		}
+		if f > 20000 {
+			tp = f
+		}
+	}
+
+	mem, err := GetClipboardData(tp)
+	if err != nil {
+		t.Error(err)
+	}
+	p, err := GlobalLock(mem)
+	if err != nil {
+		t.Error(err)
+	}
+	defer GlobalUnlock(mem)
+	//n := 0
+	if tp == 13 {
+		var buf []uint16
+		for ptr := unsafe.Pointer(p); *(*uint16)(ptr) != 0; ptr = unsafe.Pointer(uintptr(ptr) + unsafe.Sizeof(*((*uint16)(unsafe.Pointer(p))))) {
+			buf = append(buf, *(*uint16)(ptr))
+		}
+		str := syscall.UTF16ToString(buf)
+		fmt.Println("\n\nClipboard Data:", str)
+		if err := CloseClipboard(); err != nil {
+			t.Error(err)
+		}
+		return
+	}
+	size, err := GlobalSize(mem)
+	if err != nil {
+		t.Error(err)
+	}
+	fmt.Println("Size:", size)
+	var buf []byte
+	for i := 0; i < int(size); i++ {
+		buf = append(buf, *(*byte)(unsafe.Pointer(uintptr(p) + uintptr(i))))
+	}
+	fmt.Println("\n\nClipboard Data:", "ok")
+	fmt.Println("Clipboard Test Done")
+}
+
+func TestGetUpdatedClipboardFormatsAll(t *testing.T) {
+	d, e := GetUpdatedClipboardFormatsAll()
+	if e != nil {
+		t.Error(e)
+	}
+	fmt.Println(d)
+}

user32_typedef.go

@@ -1,5 +1,7 @@
 package win32api
 
+import "syscall"
+
 const (
 	VK_SHIFT        = 0x10
 	VK_CTRL         = 0x11
@@ -178,3 +180,51 @@ const (
 	VK_PA1                 = 0xFD
 	VK_OEM_CLEAR           = 0xFE
 )
+
+// 剪贴板标准格式
+const (
+	CF_BITMAP          DWORD = 2
+	CF_DIB             DWORD = 8
+	CF_DIBV5           DWORD = 17
+	CF_DIF             DWORD = 5
+	CF_DSPBITMAP       DWORD = 130
+	CF_DSPENHMETAFILE  DWORD = 142
+	CF_DSPMETAFILEPICT DWORD = 131
+	CF_DSPTEXT         DWORD = 129
+	CF_ENHMETAFILE     DWORD = 14
+	CF_GDIOBJFIRST     DWORD = 0x0300
+	CF_GDIOBJLAST      DWORD = 0x03FF
+	CF_HDROP           DWORD = 15
+	CF_LOCALE          DWORD = 16
+	CF_METAFILEPICT    DWORD = 3
+	CF_OEMTEXT         DWORD = 7
+	CF_OWNERDISPLAY    DWORD = 0x0080
+	CF_PALETTE         DWORD = 9
+	CF_PENDATA         DWORD = 10
+	CF_PRIVATEFIRST    DWORD = 0x0200
+	CF_PRIVATELAST     DWORD = 0x02FF
+	CF_RIFF            DWORD = 11
+	CF_SYLK            DWORD = 4
+	CF_TEXT            DWORD = 1
+	CF_TIFF            DWORD = 6
+	CF_UNICODETEXT     DWORD = 13
+	CF_WAVE            DWORD = 12
+	CF_HENHMETAFILE    DWORD = 14
+)
+
+type MSG struct {
+	Hwnd    syscall.Handle
+	Message uint32
+	WParam  uintptr
+	LParam  uintptr
+	Time    uint32
+	Pt      POINT
+}
+
+type POINT struct {
+	X, Y int32
+}
+
+const (
+	WM_CLIPBOARDUPDATE DWORD = 0x031D
+)