diff --git a/user32.go b/user32.go
index fd5eb4e..831620a 100644
--- a/user32.go
+++ b/user32.go
@@ -1795,6 +1795,7 @@ var (
 	findWindow                  *windows.LazyProc
 	getActiveWindow             *windows.LazyProc
 	getAncestor                 *windows.LazyProc
+	getCapture                  *windows.LazyProc
 	getCaretPos                 *windows.LazyProc
 	getClassName                *windows.LazyProc
 	getClientRect               *windows.LazyProc
@@ -1845,6 +1846,7 @@ var (
 	loadImage                   *windows.LazyProc
 	loadMenu                    *windows.LazyProc
 	loadString                  *windows.LazyProc
+	mapWindowPoints             *windows.LazyProc
 	messageBeep                 *windows.LazyProc
 	messageBox                  *windows.LazyProc
 	monitorFromWindow           *windows.LazyProc
@@ -1945,6 +1947,7 @@ func init() {
 	findWindow = libuser32.NewProc("FindWindowW")
 	getActiveWindow = libuser32.NewProc("GetActiveWindow")
 	getAncestor = libuser32.NewProc("GetAncestor")
+	getCapture = libuser32.NewProc("GetCapture")
 	getCaretPos = libuser32.NewProc("GetCaretPos")
 	getClassName = libuser32.NewProc("GetClassNameW")
 	getClientRect = libuser32.NewProc("GetClientRect")
@@ -2000,6 +2003,7 @@ func init() {
 	loadImage = libuser32.NewProc("LoadImageW")
 	loadMenu = libuser32.NewProc("LoadMenuW")
 	loadString = libuser32.NewProc("LoadStringW")
+	mapWindowPoints = libuser32.NewProc("MapWindowPoints")
 	messageBeep = libuser32.NewProc("MessageBeep")
 	messageBox = libuser32.NewProc("MessageBoxW")
 	monitorFromWindow = libuser32.NewProc("MonitorFromWindow")
@@ -2464,6 +2468,14 @@ func GetAncestor(hWnd HWND, gaFlags uint32) HWND {
 	return HWND(ret)
 }
 
+func GetCapture() HWND {
+	ret, _, _ := syscall.Syscall(getCapture.Addr(), 0,
+		0,
+		0,
+		0)
+	return HWND(ret)
+}
+
 func GetCaretPos(lpPoint *POINT) bool {
 	ret, _, _ := syscall.Syscall(getCaretPos.Addr(), 1,
 		uintptr(unsafe.Pointer(lpPoint)),
@@ -2935,6 +2947,18 @@ func LoadString(instRes HINSTANCE, id uint32, buf *uint16, length int32) int32 {
 	return int32(ret)
 }
 
+func MapWindowPoints(hWndFrom, hWndTo HWND, lpPoints *POINT, cPoints uint32) int32 {
+	ret, _, _ := syscall.Syscall6(mapWindowPoints.Addr(), 4,
+		uintptr(hWndFrom),
+		uintptr(hWndTo),
+		uintptr(unsafe.Pointer(lpPoints)),
+		uintptr(cPoints),
+		0,
+		0)
+
+	return int32(ret)
+}
+
 // Plays a waveform sound. uType is the sound to be played. The sounds are set by the user through the Sound control panel application.
 // The following values can be used as a sound:
 //