diff --git a/redo/test/page4.c b/redo/test/page4.c
index bed541d6..02c91652 100644
--- a/redo/test/page4.c
+++ b/redo/test/page4.c
@@ -84,13 +84,11 @@ uiBox *makePage4(void)
 	uiComboboxAppend(cbox, "Item 3");
 	uiBoxAppend(page4, uiControl(cbox), 0);
 
-/*
 	rb = uiNewRadioButtons();
 	uiRadioButtonsAppend(rb, "Item 1");
 	uiRadioButtonsAppend(rb, "Item 2");
 	uiRadioButtonsAppend(rb, "Item 3");
 	uiBoxAppend(page4, uiControl(rb), 0);
-*/
 
 	return page4;
 }
diff --git a/redo/windows/radiobuttons.c b/redo/windows/radiobuttons.c
index 2cbeb5db..a40513f3 100644
--- a/redo/windows/radiobuttons.c
+++ b/redo/windows/radiobuttons.c
@@ -4,4 +4,179 @@
 struct radiobuttons {
 	uiRadioButtons r;
 	struct ptrArray *hwnds;
+	uiControl *parent;
 };
+
+static BOOL onWM_COMMAND(uiControl *c, HWND hwnd, WORD code, LRESULT *lResult)
+{
+	struct radiobuttons *r = (struct radiobuttons *) c;
+
+	if (code != BN_CLICKED)
+		return FALSE;
+	*lResult = 0;
+	return TRUE;
+}
+
+static void radiobuttonsDestroy(uiControl *c)
+{
+	// TODO
+}
+
+// radio buttons have more than one handle
+// if we allow deletion, the handles are not permanent
+static uintptr_t radiobuttonsHandle(uiControl *c)
+{
+	return 0;
+}
+
+static uiControl *radiobuttonsParent(uiControl *c)
+{
+	struct radiobuttons *r = (struct radiobuttons *) c;
+
+	return r->parent;
+}
+
+static void radiobuttonsSetParent(uiControl *c, uiControl *parent)
+{
+	struct radiobuttons *r = (struct radiobuttons *) c;
+	HWND newParentHWND;
+	HWND hwnd;
+	uintmax_t i;
+
+	r->parent = parent;
+	newParentHWND = utilWindow;
+	if (r->parent != NULL)
+		newParentHWND = (HWND) uiControlHandle(r->parent);
+	for (i = 0; i < r->hwnds->len; i++) {
+		hwnd = ptrArrayIndex(r->hwnds, HWND, i);
+		if (SetParent(hwnd, newParentHWND) == NULL)
+			logLastError("error setting radio button parent in radiobuttonsSetParent()");
+	}
+}
+
+// TODO
+// from http://msdn.microsoft.com/en-us/library/windows/desktop/dn742486.aspx#sizingandspacing
+#define checkboxHeight 10
+// from http://msdn.microsoft.com/en-us/library/windows/desktop/bb226818%28v=vs.85%29.aspx
+#define checkboxXFromLeftOfBoxToLeftOfLabel 12
+
+static void radiobuttonsPreferredSize(uiControl *c, uiSizing *d, intmax_t *width, intmax_t *height)
+{
+	struct radiobuttons *r = (struct radiobuttons *) c;
+	uintmax_t i;
+	intmax_t wid, maxwid;
+
+	maxwid = 0;
+	for (i = 0; i < r->hwnds->len; i++) {
+		wid = uiWindowsWindowTextWidth(ptrArrayIndex(r->hwnds, HWND, i));
+		if (maxwid < wid)
+			maxwid = wid;
+	}
+	*width = uiWindowsDlgUnitsToX(checkboxXFromLeftOfBoxToLeftOfLabel, d->Sys->BaseX) + maxwid;
+	*height = uiWindowsDlgUnitsToY(checkboxHeight, d->Sys->BaseY) * r->hwnds->len;
+}
+
+// TODO clip to height
+static void radiobuttonsResize(uiControl *c, intmax_t x, intmax_t y, intmax_t width, intmax_t height, uiSizing *d)
+{
+	struct radiobuttons *r = (struct radiobuttons *) c;
+	intmax_t height1;
+	uintmax_t i;
+	HWND hwnd;
+
+	height1 = uiWindowsDlgUnitsToY(checkboxHeight, d->Sys->BaseY);
+	for (i = 0; i < r->hwnds->len; i++) {
+		hwnd = ptrArrayIndex(r->hwnds, HWND, i);
+		moveWindow(hwnd, x, y, width, height1, d);
+		y += height1;
+	}
+}
+
+static void radiobuttonsQueueResize(uiControl *c)
+{
+	queueResize(c);
+}
+
+static uiSizing *radiobuttonsSizing(uiControl *c)
+{
+	// TODO
+	return NULL;
+}
+
+static int radiobuttonsContainerVisible(uiControl *c)
+{
+	// TODO
+	return 1;
+}
+
+static void radiobuttonsSHED(uiControl *c)
+{
+	// TODO
+}
+
+static void radiobuttonsSysFunc(uiControl *c, uiControlSysFuncParams *p)
+{
+	// TODO
+}
+
+static int radiobuttonsStartZOrder(uiControl *c, uiControlSysFuncParams *p)
+{
+	// TODO
+	return 0;
+}
+
+static void radiobuttonsAppend(uiRadioButtons *rr, const char *text)
+{
+	struct radiobuttons *r = (struct radiobuttons *) rr;
+	HWND hwnd, parent;
+	WCHAR *wtext;
+
+	wtext = toUTF16(text);
+	parent = utilWindow;
+	if (r->parent != NULL)
+		parent = (HWND) uiControlHandle(r->parent);
+	hwnd = CreateWindowExW(0,
+		L"button", wtext,
+		BS_RADIOBUTTON | WS_TABSTOP | WS_CHILD | WS_VISIBLE,
+		0, 0,
+		100, 100,
+		parent, NULL, hInstance, NULL);
+	if (hwnd == NULL)
+		logLastError("error creating radio button in radiobuttonsAppend()");
+	ptrArrayAppend(r->hwnds, hwnd);
+	uiControlQueueResize(uiControl(r));
+}
+
+uiRadioButtons *uiNewRadioButtons(void)
+{
+	struct radiobuttons *r;
+
+	r = uiNew(struct radiobuttons);
+	uiTyped(r)->Type = uiTypeRadioButtons();
+
+	r->hwnds = newPtrArray();
+
+	uiControl(r)->Destroy = radiobuttonsDestroy;
+	uiControl(r)->Handle = radiobuttonsHandle;
+	uiControl(r)->Parent = radiobuttonsParent;
+	uiControl(r)->SetParent = radiobuttonsSetParent;
+	uiControl(r)->PreferredSize = radiobuttonsPreferredSize;
+	uiControl(r)->Resize = radiobuttonsResize;
+	uiControl(r)->QueueResize = radiobuttonsQueueResize;
+	uiControl(r)->Sizing = radiobuttonsSizing;
+	uiControl(r)->ContainerVisible = radiobuttonsContainerVisible;
+	uiControl(r)->Show = radiobuttonsSHED;
+	uiControl(r)->Hide = radiobuttonsSHED;
+	uiControl(r)->ContainerShow = radiobuttonsSHED;
+	uiControl(r)->ContainerHide = radiobuttonsSHED;
+	uiControl(r)->Enable = radiobuttonsSHED;
+	uiControl(r)->Disable = radiobuttonsSHED;
+	uiControl(r)->ContainerEnable = radiobuttonsSHED;
+	uiControl(r)->ContainerDisable = radiobuttonsSHED;
+	uiControl(r)->SysFunc = radiobuttonsSysFunc;
+	uiControl(r)->StartZOrder = radiobuttonsStartZOrder;
+
+	uiRadioButtons(r)->Append = radiobuttonsAppend;
+
+	return uiRadioButtons(r);
+}