diff --git a/area_windows.go b/area_windows.go
index 943c5af..6daf4bf 100644
--- a/area_windows.go
+++ b/area_windows.go
@@ -474,8 +474,8 @@ func areaMouseEvent(s *sysData, button uint, up bool, wparam _WPARAM, lparam _LP
 	var me MouseEvent
 
 	xpos, ypos := getScrollPos(s.hwnd)		// mouse coordinates are relative to control; make them relative to Area
-	xpos += lparam._X()
-	ypos += lparam._Y()
+	xpos += lparam.X()
+	ypos += lparam.Y()
 	me.Pos = image.Pt(int(xpos), int(ypos))
 	if !me.Pos.In(image.Rect(0, 0, s.areawidth, s.areaheight)) {		// outside the actual Area; no event
 		return
diff --git a/common_windows.go b/common_windows.go
index 52bfddf..85dce45 100644
--- a/common_windows.go
+++ b/common_windows.go
@@ -50,14 +50,14 @@ func _MAKEINTRESOURCE(what uint16) uintptr {
 	return uintptr(what)
 }
 
-func (l _LPARAM) _X() int32 {
+func (l _LPARAM) X() int32 {
 	// according to windowsx.h
 	loword := uint16(l & 0xFFFF)
 	short := int16(loword)	// convert to signed...
 	return int32(short)		// ...and sign extend
 }
 
-func (l _LPARAM) _Y() int32 {
+func (l _LPARAM) Y() int32 {
 	// according to windowsx.h
 	hiword := uint16((l & 0xFFFF0000) >> 16)
 	short := int16(hiword)	// convert to signed...