diff --git a/nw.lua b/nw.lua
index c3d4bb3..f8db5bd 100644
--- a/nw.lua
+++ b/nw.lua
@@ -997,8 +997,8 @@ end
 function window:_hittest(mx, my)
 	local where
 	if self:_can_set_rect() and self:resizeable() then
-		local ho, vo = 8, 8 --TODO: expose this?
-		local co = (vo + ho) / 2
+		local ho, vo = 8, 8 --TODO: expose these?
+		local co = vo + ho  --...and this (corner radius)
 		local w, h = self:client_size()
 		where = app:_resize_area_hit(mx, my, w, h, ho, vo, co)
 	end
@@ -1009,7 +1009,6 @@ end
 
 function window:_init_manual_resize()
 	if self:frame() ~= 'none' then return end
-	if app:ver'OSX' then return end --TODO: remove this
 
 	local resizing, where, sides, dx, dy
 
@@ -1042,11 +1041,7 @@ function window:_init_manual_resize()
 				self:cursor'arrow'
 			end
 		else
-			if app:ver'X' then
-				mx, my = app.backend:_get_mouse_pos()
-			else
-				mx, my = self:to_screen(mx, my)
-			end
+			mx, my = app:mouse'pos' --need absolute pos because X is async
 			if where == 'move' then
 				local w, h = self:client_size()
 				self:frame_rect(mx + dx, my + dy, w, h)
@@ -1361,6 +1356,18 @@ end
 
 --mouse ----------------------------------------------------------------------
 
+function app:mouse(var)
+	if var == 'inside' then
+		return true
+	elseif var == 'pos' then
+		return self.backend:get_mouse_pos()
+	elseif var == 'x' then
+		return (self.backend:get_mouse_pos())
+	elseif var == 'y' then
+		return select(2, self.backend:get_mouse_pos())
+	end
+end
+
 function window:mouse(var)
 	if not self:_can_get_rect() then return end
 	local inside = self._mouse.inside
diff --git a/nw.md b/nw.md
index 6152348..31b71ba 100644
--- a/nw.md
+++ b/nw.md
@@ -167,7 +167,7 @@ __views__
 `view:moved(x, y, oldx, oldy)`               event: view was moved
 `view:resized(w, h, oldw, oldh)`             event: view was resized
 __mouse__
-`win/view:mouse(var) -> val`                 mouse state: _x, y, pos, inside, left, right, middle, x1, x2_
+`app/win/view:mouse(var) -> val`             mouse state: _x, y, pos, inside, left, right, middle, x1, x2_
 `win/view:mouseenter(x, y)`                  event: mouse entered the client area of the window
 `win/view:mouseleave()`                      event: mouse left the client area of the window
 `win/view:mousemove(x, y)`                   event: mouse was moved
diff --git a/nw_cocoa.lua b/nw_cocoa.lua
index f5de966..4863cdf 100644
--- a/nw_cocoa.lua
+++ b/nw_cocoa.lua
@@ -171,9 +171,7 @@ function window:new(app, frontend, t)
 			not toolbox and t.minimizable and objc.NSMiniaturizableWindowMask or 0,
 			t.resizeable and objc.NSResizableWindowMask or 0)
 	else
-		style = bit.bor(
-			objc.NSBorderlessWindowMask,
-			t.resizeable and objc.NSResizableWindowMask or 0)
+		style = objc.NSBorderlessWindowMask
 		--for frameless windows we have to handle maximization manually.
 		self._frameless = true
 	end
@@ -1315,18 +1313,24 @@ local hi_cursors = {
 }
 
 --resize sides and corners
-cursors.topleft     = hi_cursors.size_diag2
-cursors.topright    = hi_cursors.size_diag1
-cursors.bottomleft  = hi_cursors.size_diag1
-cursors.bottomright = hi_cursors.size_diag2
-cursors.top         = hi_cursors.size_v
-cursors.bottom      = hi_cursors.size_v
-cursors.left        = hi_cursors.size_h
-cursors.right       = hi_cursors.size_h
+hi_cursors.topleft     = hi_cursors.size_diag2
+hi_cursors.topright    = hi_cursors.size_diag1
+hi_cursors.bottomleft  = hi_cursors.size_diag1
+hi_cursors.bottomright = hi_cursors.size_diag2
+hi_cursors.top         = hi_cursors.size_v
+hi_cursors.bottom      = hi_cursors.size_v
+hi_cursors.left        = hi_cursors.size_h
+hi_cursors.right       = hi_cursors.size_h
+
+local cursors_basepath = glue.memoize(function()
+	local basepath = objc.findframework'ApplicationServices.HIServices'
+	if not basepath then return end
+	return basepath..'/Versions/Current/Resources/cursors'
+end)
 
 local load_hicursor = objc.memoize(function(name)
-	basepath = basepath or objc.findframework(
-		'ApplicationServices.HIServices/Versions/Current/Resources/cursors')
+	local basepath = cursors_basepath()
+	if not basepath then return end
 	local curpath = string.format('%s/%s/cursor.pdf', basepath, name)
 	local infopath = string.format('%s/%s/info.plist', basepath, name)
 	local image = objc.NSImage:alloc():initByReferencingFile(curpath)
@@ -1354,7 +1358,8 @@ function Window:cursorUpdate(event)
 	if self:nw_clientarea_hit(event) then
 		local cursor, visible = self.frontend:cursor()
 		if visible then
-			load_cursor(cursor):set()
+			local cursor = load_cursor(cursor) or load_cursor'arrow'
+			cursor:set()
 			objc.NSCursor:unhide()
 		else
 			objc.NSCursor:hide()
@@ -1640,7 +1645,7 @@ function app:key(name)
 	end
 end
 
---mouse/settings -------------------------------------------------------------
+--mouse/app ------------------------------------------------------------------
 
 function app:double_click_time()
 	return objc.NSEvent:doubleClickInterval() --seconds
@@ -1650,6 +1655,17 @@ function app:double_click_target_area()
 	return 4, 4 --like in Windows
 end
 
+function app:get_mouse_pos()
+	--TODO: this returns the current mouse location outside of the event stream.
+	--We don't want that! We want the mouse location at "this event" time. Find a way!
+	local p = objc.NSEvent:mouseLocation()
+	return p.x, primary_screen_h() - p.y
+end
+
+function app:set_mouse_pos()
+	--TODO
+end
+
 --rendering/bitmap -----------------------------------------------------------
 
 --make a bitmap that can be painted on the current NSGraphicsContext.
diff --git a/nw_demo.lua b/nw_demo.lua
index 4aa2a7b..feff05c 100644
--- a/nw_demo.lua
+++ b/nw_demo.lua
@@ -315,13 +315,26 @@ function win:hittest(mx, my, where)
 	self.max_hover = box2d.hit(mx, my, unpack(max_rect))
 	self.close_hover = box2d.hit(mx, my, unpack(close_rect))
 	self.titlebar_hover =
-		not where --the titlebar is below the invisible resize grips
-		and not self:ismaximized()
-		and not self:fullscreen()
+		not where --the titlebar is below the invisible resize grip
 		and box2d.hit(mx, my, unpack(titlebar_rect))
 
-	if self.min_hover or self.max_hover or self.close_hover then return false end
-	if self.titlebar_hover then return 'move' end
+	if self.min_hover or self.max_hover or self.close_hover then
+		return false --titlebar buttons are above the invisible resize grip
+	elseif self.titlebar_hover then
+		if self:ismaximized() or self:fullscreen() then return end
+		return 'move'
+	end
+end
+
+function win:click(button, count)
+	if count == 2 and self.titlebar_hover then
+		if self:ismaximized() then
+			self:restore()
+		else
+			self:maximize()
+		end
+		return true
+	end
 end
 
 function win:mouseup(x, y)
diff --git a/nw_winapi.lua b/nw_winapi.lua
index cc1611a..e7e0a26 100644
--- a/nw_winapi.lua
+++ b/nw_winapi.lua
@@ -1137,6 +1137,15 @@ function app:double_click_target_area()
 	return w, h
 end
 
+function app:get_mouse_pos()
+	local p = winapi.GetCursorPos()
+	return p.x, p.y
+end
+
+function app:set_mouse_pos(x, y)
+	winapi.SetCursorPos(x, y)
+end
+
 --TODO: get lost mouse events http://blogs.msdn.com/b/oldnewthing/archive/2012/03/14/10282406.aspx
 
 local function unpack_buttons(b)
diff --git a/nw_xlib.lua b/nw_xlib.lua
index 3004c64..1c1d6c2 100644
--- a/nw_xlib.lua
+++ b/nw_xlib.lua
@@ -1242,11 +1242,15 @@ function window:_setmouse(e)
 	return m
 end
 
-function app:_get_mouse_pos()
+function app:get_mouse_pos()
 	local x, y = xlib.query_pointer(xlib.screen.root)
 	return x, y
 end
 
+function app:set_mouse_pos(x, y)
+	--TODO
+end
+
 function window:ButtonPress(e)
 	if self._disabled then return end
 	if e.button == C.Button4 then --wheel up