update clipmessage

user32.go

@@ -321,3 +321,37 @@ func SetClipboardViewer(hWndNewViewer HWND) (HWND, error) {
 	}
 	return HWND(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 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_typedef.go

@@ -1,5 +1,7 @@
 package win32api
 
+import "syscall"
+
 const (
 	VK_SHIFT        = 0x10
 	VK_CTRL         = 0x11
@@ -209,3 +211,20 @@ const (
 	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
+)