diff --git a/common_windows.c b/common_windows.c
index d4db842..a8a2444 100644
--- a/common_windows.c
+++ b/common_windows.c
@@ -112,10 +112,9 @@ void paintControlBackground(HWND hwnd, HDC dc)
 			return;
 		if (GetClassNameW(parent, classname, 128) == 0)
 			xpanic("error getting name of focused window class in paintControlBackground()", GetLastError());
-		// skip container and groupboxes
-		if (_wcsicmp(classname, containerclass) != 0)		// container
-			if (_wcsicmp(classname, L"button") != 0)		// groupbox
-				break;
+		// skip groupboxes; they're (supposed to be) transparent
+		if (_wcsicmp(classname, L"button") != 0)
+			break;
 	}
 	if (GetWindowRect(hwnd, &r) == 0)
 		xpanic("error getting control's window rect in paintControlBackground()", GetLastError());
diff --git a/container_windows.c b/container_windows.c
index 7910b92..bbad9ec 100644
--- a/container_windows.c
+++ b/container_windows.c
@@ -3,60 +3,6 @@
 #include "winapi_windows.h"
 #include "_cgo_export.h"
 
-/*
-This could all just be part of Window, but doing so just makes things complex.
-In this case, I chose to waste a window handle rather than keep things super complex.
-If this is seriously an issue in the future, I can roll it back.
-*/
-
-static LRESULT CALLBACK containerWndProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
-{
-	LRESULT lResult;
-
-	if (sharedWndProc(hwnd, uMsg, wParam, lParam, &lResult))
-		return lResult;
-	switch (uMsg) {
-	default:
-		return DefWindowProcW(hwnd, uMsg, wParam, lParam);
-	}
-	xmissedmsg("container", "containerWndProc()", uMsg);
-	return 0;		// unreached
-}
-
-DWORD makeContainerWindowClass(char **errmsg)
-{
-	WNDCLASSW wc;
-
-	ZeroMemory(&wc, sizeof (WNDCLASSW));
-	wc.lpfnWndProc = containerWndProc;
-	wc.hInstance = hInstance;
-	wc.hIcon = hDefaultIcon;
-	wc.hCursor = hArrowCursor;
-	wc.hbrBackground = NULL;//(HBRUSH) (COLOR_BTNFACE + 1);
-	wc.lpszClassName = containerclass;
-	if (RegisterClassW(&wc) == 0) {
-		*errmsg = "error registering container window class";
-		return GetLastError();
-	}
-	return 0;
-}
-
-HWND newContainer(void)
-{
-	HWND hwnd;
-
-	hwnd = CreateWindowExW(
-		WS_EX_CONTROLPARENT | WS_EX_TRANSPARENT,
-		containerclass, L"",
-		WS_CHILD | WS_VISIBLE,
-		CW_USEDEFAULT, CW_USEDEFAULT,
-		100, 100,
-		msgwin, NULL, hInstance, NULL);
-	if (hwnd == NULL)
-		xpanic("container creation failed", GetLastError());
-	return hwnd;
-}
-
 RECT containerBounds(HWND hwnd)
 {
 	RECT r;
diff --git a/container_windows.go b/container_windows.go
index 02da760..953d108 100644
--- a/container_windows.go
+++ b/container_windows.go
@@ -2,18 +2,9 @@
 
 package ui
 
-import (
-	"fmt"
-	"syscall"
-)
-
 // #include "winapi_windows.h"
 import "C"
 
-type container struct {
-	*controlSingleHWND
-}
-
 type sizing struct {
 	sizingbase
 
@@ -26,42 +17,6 @@ type sizing struct {
 	// possibly the HDWP
 }
 
-func makeContainerWindowClass() error {
-	var errmsg *C.char
-
-	err := C.makeContainerWindowClass(&errmsg)
-	if err != 0 || errmsg != nil {
-		return fmt.Errorf("%s: %v", C.GoString(errmsg), syscall.Errno(err))
-	}
-	return nil
-}
-
-func newContainer() *container {
-	// don't set preferredSize(); it should never be called
-	return &container{
-		controlSingleHWND:		newControlSingleHWND(C.newContainer()),
-	}
-}
-
-// TODO merge with controlSingleHWND
-func (c *container) show() {
-	C.ShowWindow(c.hwnd, C.SW_SHOW)
-}
-
-// TODO merge with controlSingleHWND
-func (c *container) hide() {
-	C.ShowWindow(c.hwnd, C.SW_HIDE)
-}
-
-func (c *container) parent() *controlParent {
-	return &controlParent{c.hwnd}
-}
-
-func (c *container) bounds(d *sizing) (int, int, int, int) {
-	r := C.containerBounds(c.hwnd)
-	return int(r.left), int(r.top), int(r.right - r.left), int(r.bottom - r.top)
-}
-
 // For Windows, Microsoft just hands you a list of preferred control sizes as part of the MSDN documentation and tells you to roll with it.
 // These sizes are given in "dialog units", which are independent of the font in use.
 // We need to convert these into standard pixels, which requires we get the device context of the OS window.
diff --git a/uitask_windows.go b/uitask_windows.go
index c3c1884..045933a 100644
--- a/uitask_windows.go
+++ b/uitask_windows.go
@@ -33,9 +33,6 @@ func uiinit() error {
 	if err := makeWindowWindowClass(); err != nil {
 		return fmt.Errorf("error creating Window window class: %v", err)
 	}
-	if err := makeContainerWindowClass(); err != nil {
-		return fmt.Errorf("error creating container window class: %v", err)
-	}
 	if err := makeAreaWindowClass(); err != nil {
 		return fmt.Errorf("error creating Area window class: %v", err)
 	}
diff --git a/winapi_windows.h b/winapi_windows.h
index e6858e5..a7ee19e 100644
--- a/winapi_windows.h
+++ b/winapi_windows.h
@@ -122,9 +122,6 @@ extern intptr_t tableSelectedItem(HWND);
 extern void tableSelectItem(HWND, intptr_t);
 
 // container_windows.c
-#define containerclass L"gouicontainer"
-extern DWORD makeContainerWindowClass(char **);
-extern HWND newContainer();
 extern RECT containerBounds(HWND);
 extern void calculateBaseUnits(HWND, int *, int *, LONG *);