diff --git a/redo/unix/GNUmakeinc.mk b/redo/unix/GNUmakeinc.mk
index 48cb6429..d2080e03 100644
--- a/redo/unix/GNUmakeinc.mk
+++ b/redo/unix/GNUmakeinc.mk
@@ -2,12 +2,10 @@
 
 osCFILES = \
 	unix/alloc.c \
-	unix/bin.c \
 	unix/box.c \
 	unix/button.c \
 	unix/checkbox.c \
 	unix/combobox.c \
-	unix/container.c \
 	unix/control.c \
 	unix/datetimepicker.c \
 	unix/entry.c \
diff --git a/redo/unix/checkbox.c b/redo/unix/checkbox.c
index b1509414..3e38d801 100644
--- a/redo/unix/checkbox.c
+++ b/redo/unix/checkbox.c
@@ -19,9 +19,9 @@ uiUnixDefineControl(
 
 static void onToggled(GtkToggleButton *b, gpointer data)
 {
-	struct checkbox *c = (struct checkbox *) data;
+	uiCheckbox *c = uiCheckbox(data);
 
-	(*(c->onToggled))(uiCheckbox(c), c->onToggledData);
+	(*(c->onToggled))(c, c->onToggledData);
 }
 
 static void defaultOnToggled(uiCheckbox *c, void *data)
diff --git a/redo/unix/entry.c b/redo/unix/entry.c
index 56537fdd..64bfed3c 100644
--- a/redo/unix/entry.c
+++ b/redo/unix/entry.c
@@ -18,9 +18,9 @@ uiUnixDefineControl(
 
 static void onChanged(GtkEditable *editable, gpointer data)
 {
-	struct entry *e = (struct entry *) data;
+	uiEntry *e = uiEntry(data);
 
-	(*(e->onChanged))(uiEntry(e), e->onChangedData);
+	(*(e->onChanged))(e, e->onChangedData);
 }
 
 static void defaultOnChanged(uiEntry *e, void *data)
diff --git a/redo/unix/label.c b/redo/unix/label.c
index 61904253..96fe3bf7 100644
--- a/redo/unix/label.c
+++ b/redo/unix/label.c
@@ -1,33 +1,25 @@
 // 11 june 2015
 #include "uipriv_unix.h"
 
-struct label {
-	uiLabel l;
+struct uiLabel {
+	uiUnixControl c;
 	GtkWidget *widget;
 	GtkMisc *misc;
 	GtkLabel *label;
 };
 
-uiDefineControlType(uiLabel, uiTypeLabel, struct label)
+uiUnixDefineControl(
+	uiLabel,								// type name
+	uiLabelType							// type function
+)
 
-static uintptr_t labelHandle(uiControl *c)
+char *uiLabelText(uiLabel *l)
 {
-	struct label *l = (struct label *) c;
-
-	return (uintptr_t) (l->widget);
-}
-
-static char *labelText(uiLabel *ll)
-{
-	struct label *l = (struct label *) ll;
-
 	return uiUnixStrdupText(gtk_label_get_text(l->label));
 }
 
-static void labelSetText(uiLabel *ll, const char *text)
+void uiLabelSetText(uiLabel *l, const char *text)
 {
-	struct label *l = (struct label *) ll;
-
 	gtk_label_set_text(l->label, text);
 	// changing the text might necessitate a change in the label's size
 	uiControlQueueResize(uiControl(l));
@@ -35,21 +27,17 @@ static void labelSetText(uiLabel *ll, const char *text)
 
 uiLabel *uiNewLabel(const char *text)
 {
-	struct label *l;
+	uiLabel *l;
 
-	l = (struct label *) uiNewControl(uiTypeLabel());
+	l = (uiLabel *) uiNewControl(uiTypeLabel());
 
 	l->widget = gtk_label_new(text);
 	l->misc = GTK_MISC(l->widget);
 	l->label = GTK_LABEL(l->widget);
-	uiUnixMakeSingleWidgetControl(uiControl(l), l->widget);
 
 	gtk_misc_set_alignment(l->misc, 0, 0);
 
-	uiControl(l)->Handle = labelHandle;
+	uiUnixFinishNewControl(l, uiLabel);
 
-	uiLabel(l)->Text = labelText;
-	uiLabel(l)->SetText = labelSetText;
-
-	return uiLabel(l);
+	return l;
 }
diff --git a/redo/unix/progressbar.c b/redo/unix/progressbar.c
index 97c91be5..8ca9b5f9 100644
--- a/redo/unix/progressbar.c
+++ b/redo/unix/progressbar.c
@@ -1,25 +1,19 @@
 // 11 june 2015
 #include "uipriv_unix.h"
 
-struct progressbar {
-	uiProgressBar p;
+struct uiProgressBar {
+	uiUnixControl c;
 	GtkWidget *widget;
 	GtkProgressBar *pbar;
 };
 
-uiDefineControlType(uiProgressBar, uiTypeProgressBar, struct progressbar)
+uiUnixDefineControl(
+	uiProgressBar,							// type name
+	uiProgressBarType						// type function
+)
 
-static uintptr_t progressbarHandle(uiControl *c)
+void uiProgressBarSetValue(uiProgressBar *p, int value)
 {
-	struct progressbar *p = (struct progressbar *) c;
-
-	return (uintptr_t) (p->widget);
-}
-
-static void progressbarSetValue(uiProgressBar *pp, int value)
-{
-	struct progressbar *p = (struct progressbar *) pp;
-
 	if (value < 0 || value > 100)
 		complain("value %d out of range in progressbarSetValue()", value);
 	gtk_progress_bar_set_fraction(p->pbar, ((gdouble) value) / 100);
@@ -27,17 +21,14 @@ static void progressbarSetValue(uiProgressBar *pp, int value)
 
 uiProgressBar *uiNewProgressBar(void)
 {
-	struct progressbar *p;
+	uiProgressBar *p;
 
-	p = (struct progressbar *) uiNewControl(uiTypeProgressBar());
+	p = (uiProgressBar *) uiNewControl(uiTypeProgressBar());
 
 	p->widget = gtk_progress_bar_new();
 	p->pbar = GTK_PROGRESS_BAR(p->widget);
-	uiUnixMakeSingleWidgetControl(uiControl(p), p->widget);
 
-	uiControl(p)->Handle = progressbarHandle;
+	uiUnixFinishNewControl(p, uiProgressBar);
 
-	uiProgressBar(p)->SetValue = progressbarSetValue;
-
-	return uiProgressBar(p);
+	return p;
 }
diff --git a/redo/unix/radiobuttons.c b/redo/unix/radiobuttons.c
index c57a89b0..4e73be64 100644
--- a/redo/unix/radiobuttons.c
+++ b/redo/unix/radiobuttons.c
@@ -4,28 +4,28 @@
 // on GTK+ a uiRadioButtons is a GtkBox with each of the GtkRadioButtons as children
 
 struct radiobuttons {
-	uiRadioButtons r;
-	GtkWidget *boxWidget;
-	GtkContainer *boxContainer;
+	uiUnixControl c;
+	GtkWidget *widget;
+	GtkContainer *container;
 	GtkBox *box;
 	GPtrArray *buttons;
 };
 
-uiDefineControlType(uiRadioButtons, uiTypeRadioButtons, struct radiobuttons)
+static void onDestroy(uiRadioButtons *);
 
-// TODO destroy
+uiUnixDefineControlWithOnDestroy(
+	uiRadioButtons,						// type name
+	uiRadioButtonsType,						// type function
+	onDestroy(this);						// on destroy
+)
 
-// TODO note that the handle of a uiRadioButtons is undefined (or at least highly platform-dependent and unreliable)
-static uintptr_t radiobuttonsHandle(uiControl *c)
+static void onDestroy(uiRadioButtons *r)
 {
-	struct radiobuttons *r = (struct radiobuttons *) c;
-
-	return (uintptr_t) (r->boxWidget);
+	// TODO
 }
 
-static void radiobuttonsAppend(uiRadioButtons *rr, const char *text)
+void uiRadiobuttonsAppend(uiRadioButtons *r, const char *text)
 {
-	struct radiobuttons *r = (struct radiobuttons *) rr;
 	GtkWidget *rb;
 	GtkRadioButton *previous;
 
@@ -33,7 +33,7 @@ static void radiobuttonsAppend(uiRadioButtons *rr, const char *text)
 	if (r->buttons->len > 0)
 		previous = GTK_RADIO_BUTTON(g_ptr_array_index(r->buttons, 0));
 	rb = gtk_radio_button_new_with_label_from_widget(previous, text);
-	gtk_container_add(r->boxContainer, rb);
+	gtk_container_add(r->container, rb);
 	g_ptr_array_add(r->buttons, rb);
 	gtk_widget_show(rb);
 	uiControlQueueResize(uiControl(r));
@@ -41,20 +41,17 @@ static void radiobuttonsAppend(uiRadioButtons *rr, const char *text)
 
 uiRadioButtons *uiNewRadioButtons(void)
 {
-	struct radiobuttons *r;
+	uiRadioButtons *r;
 
-	r = (struct radiobuttons *) uiNewControl(uiTypeRadioButtons());
+	r = (uiRadioButtons *) uiNewControl(uiTypeRadioButtons());
 
-	r->boxWidget = gtk_box_new(GTK_ORIENTATION_VERTICAL, 0);
-	r->boxContainer = GTK_CONTAINER(r->boxWidget);
-	r->box = GTK_BOX(r->boxWidget);
-	uiUnixMakeSingleWidgetControl(uiControl(r), r->boxWidget);
+	r->widget = gtk_box_new(GTK_ORIENTATION_VERTICAL, 0);
+	r->container = GTK_CONTAINER(r->widget);
+	r->box = GTK_BOX(r->widget);
 
 	r->buttons = g_ptr_array_new();
 
-	uiControl(r)->Handle = radiobuttonsHandle;
+	uiUnixFinishNewControl(r, uiRadioButtons);
 
-	uiRadioButtons(r)->Append = radiobuttonsAppend;
-
-	return uiRadioButtons(r);
+	return r;
 }
diff --git a/redo/unix/separator.c b/redo/unix/separator.c
index b8df34de..b0603a7f 100644
--- a/redo/unix/separator.c
+++ b/redo/unix/separator.c
@@ -1,32 +1,27 @@
 // 11 june 2015
 #include "uipriv_unix.h"
 
-struct separator {
-	uiSeparator s;
+struct uiSeparator {
+	uiUnixControl c;
 	GtkWidget *widget;
 	GtkSeparator *separator;
 };
 
-uiDefineControlType(uiSeparator, uiTypeSeparator, struct separator)
-
-static uintptr_t separatorHandle(uiControl *c)
-{
-	struct separator *s = (struct separator *) c;
-
-	return (uintptr_t) (s->widget);
-}
+uiUnixDefineControl(
+	uiSeparator,							// type name
+	uiSeparatorType						// type function
+)
 
 uiSeparator *uiNewHorizontalSeparator(void)
 {
-	struct separator *s;
+	uiSeparator *s;
 
-	s = (struct separator *) uiNewControl(uiTypeSeparator());
+	s = (uiSeparator *) uiNewControl(uiTypeSeparator());
 
 	s->widget = gtk_separator_new(GTK_ORIENTATION_HORIZONTAL);
 	s->separator = GTK_SEPARATOR(s->widget);
-	uiUnixMakeSingleWidgetControl(uiControl(s), s->widget);
 
-	uiControl(s)->Handle = separatorHandle;
+	uiUnixFinishNewControl(s, uiSeparator);
 
-	return uiSeparator(s);
+	return s;
 }
diff --git a/redo/unix/slider.c b/redo/unix/slider.c
index f681ef68..f082f268 100644
--- a/redo/unix/slider.c
+++ b/redo/unix/slider.c
@@ -1,8 +1,8 @@
 // 11 june 2015
 #include "uipriv_unix.h"
 
-struct slider {
-	uiSlider s;
+struct uiSlider {
+	uiUnixControl c;
 	GtkWidget *widget;
 	GtkRange *range;
 	GtkScale *scale;
@@ -11,20 +11,16 @@ struct slider {
 	gulong onChangedSignal;
 };
 
-uiDefineControlType(uiSlider, uiTypeSlider, struct slider)
+uiUnixDefineControl(
+	uiSlider,								// type name
+	uiSliderType							// type function
+)
 
 static void onChanged(GtkRange *range, gpointer data)
 {
-	struct slider *s = (struct slider *) data;
+	uiSlider *s = uiSlider(data);
 
-	(*(s->onChanged))(uiSlider(s), s->onChangedData);
-}
-
-static uintptr_t sliderHandle(uiControl *c)
-{
-	struct slider *s = (struct slider *) c;
-
-	return (uintptr_t) (s->widget);
+	(*(s->onChanged))(s, s->onChangedData);
 }
 
 static void defaultOnChanged(uiSlider *s, void *data)
@@ -32,53 +28,42 @@ static void defaultOnChanged(uiSlider *s, void *data)
 	// do nothing
 }
 
-static intmax_t sliderValue(uiSlider *ss)
+intmax_t uiSliderValue(uiSlider *s)
 {
-	struct slider *s = (struct slider *) ss;
-
 	return (intmax_t) gtk_range_get_value(s->range);
 }
 
-static void sliderSetValue(uiSlider *ss, intmax_t value)
+void uiSliderSetValue(uiSlider *s, intmax_t value)
 {
-	struct slider *s = (struct slider *) ss;
-
 	// we need to inhibit sending of ::value-changed because this WILL send a ::value-changed otherwise
 	g_signal_handler_block(s->range, s->onChangedSignal);
 	gtk_range_set_value(s->range, value);
 	g_signal_handler_unblock(s->range, s->onChangedSignal);
 }
 
-static void sliderOnChanged(uiSlider *ss, void (*f)(uiSlider *, void *), void *data)
+void uiSliderOnChanged(uiSlider *s, void (*f)(uiSlider *, void *), void *data)
 {
-	struct slider *s = (struct slider *) ss;
-
 	s->onChanged = f;
 	s->onChangedData = data;
 }
 
 uiSlider *uiNewSlider(intmax_t min, intmax_t max)
 {
-	struct slider *s;
+	uiSlider *s;
 
-	s = (struct slider *) uiNewControl(uiTypeSlider());
+	s = (uiSlider *) uiNewControl(uiTypeSlider());
 
 	s->widget = gtk_scale_new_with_range(GTK_ORIENTATION_HORIZONTAL, min, max, 1);
 	s->range = GTK_RANGE(s->widget);
 	s->scale = GTK_SCALE(s->widget);
-	uiUnixMakeSingleWidgetControl(uiControl(s), s->widget);
 
 	// TODO needed?
 	gtk_scale_set_digits(s->scale, 0);
 
 	s->onChangedSignal = g_signal_connect(s->scale, "value-changed", G_CALLBACK(onChanged), s);
-	s->onChanged = defaultOnChanged;
+	uiSliderOnChanged(s, defaultOnChanged, NULL);
 
-	uiControl(s)->Handle = sliderHandle;
+	uiUnixFinishNewControl(s, uiSlider);
 
-	uiSlider(s)->Value = sliderValue;
-	uiSlider(s)->SetValue = sliderSetValue;
-	uiSlider(s)->OnChanged = sliderOnChanged;
-
-	return uiSlider(s);
+	return s;
 }
diff --git a/redo/unix/spinbox.c b/redo/unix/spinbox.c
index 9cc9a439..cfc2ade6 100644
--- a/redo/unix/spinbox.c
+++ b/redo/unix/spinbox.c
@@ -1,8 +1,8 @@
 // 11 june 2015
 #include "uipriv_unix.h"
 
-struct spinbox {
-	uiSpinbox s;
+struct uiSpinbox {
+	uiUnixControl c;
 	GtkWidget *widget;
 	GtkEntry *entry;
 	GtkSpinButton *spinButton;
@@ -11,20 +11,16 @@ struct spinbox {
 	gulong onChangedSignal;
 };
 
-uiDefineControlType(uiSpinbox, uiTypeSpinbox, struct spinbox)
+uiUnixDefineControl(
+	uiSpinbox,							// type name
+	uiSpinboxType							// type function
+)
 
 static void onChanged(GtkSpinButton *sb, gpointer data)
 {
-	struct spinbox *s = (struct spinbox *) data;
+	uiSpinbox *s = uiSpinbox(data);
 
-	(*(s->onChanged))(uiSpinbox(s), s->onChangedData);
-}
-
-static uintptr_t spinboxHandle(uiControl *c)
-{
-	struct spinbox *s = (struct spinbox *) c;
-
-	return (uintptr_t) (s->widget);
+	(*(s->onChanged))(s, s->onChangedData);
 }
 
 static void defaultOnChanged(uiSpinbox *s, void *data)
@@ -32,17 +28,13 @@ static void defaultOnChanged(uiSpinbox *s, void *data)
 	// do nothing
 }
 
-static intmax_t spinboxValue(uiSpinbox *ss)
+intmax_t uiSpinboxValue(uiSpinbox *s)
 {
-	struct spinbox *s = (struct spinbox *) ss;
-
 	return (intmax_t) gtk_spin_button_get_value(s->spinButton);
 }
 
-static void spinboxSetValue(uiSpinbox *ss, intmax_t value)
+void uiSpinboxSetValue(uiSpinbox *s, intmax_t value)
 {
-	struct spinbox *s = (struct spinbox *) ss;
-
 	// we need to inhibit sending of ::value-changed because this WILL send a ::value-changed otherwise
 	g_signal_handler_block(s->spinButton, s->onChangedSignal);
 	// TODO does this clamp?
@@ -50,39 +42,32 @@ static void spinboxSetValue(uiSpinbox *ss, intmax_t value)
 	g_signal_handler_unblock(s->spinButton, s->onChangedSignal);
 }
 
-static void spinboxOnChanged(uiSpinbox *ss, void (*f)(uiSpinbox *, void *), void *data)
+void uiSpinboxOnChanged(uiSpinbox *s, void (*f)(uiSpinbox *, void *), void *data)
 {
-	struct spinbox *s = (struct spinbox *) ss;
-
 	s->onChanged = f;
 	s->onChangedData = data;
 }
 
 uiSpinbox *uiNewSpinbox(intmax_t min, intmax_t max)
 {
-	struct spinbox *s;
+	uiSpinbox *s;
 
 	if (min >= max)
 		complain("error: min >= max in uiNewSpinbox()");
 
-	s = (struct spinbox *) uiNewControl(uiTypeSpinbox());
+	s = (uiSpinbox *) uiNewControl(uiTypeSpinbox());
 
 	s->widget = gtk_spin_button_new_with_range(min, max, 1);
 	s->entry = GTK_ENTRY(s->widget);
 	s->spinButton = GTK_SPIN_BUTTON(s->widget);
-	uiUnixMakeSingleWidgetControl(uiControl(s), s->widget);
 
 	// TODO needed?
 	gtk_spin_button_set_digits(s->spinButton, 0);
 
 	s->onChangedSignal = g_signal_connect(s->spinButton, "value-changed", G_CALLBACK(onChanged), s);
-	s->onChanged = defaultOnChanged;
+	uiSpinboxOnChanged(s, defaultOnChanged, NULL);
 
-	uiControl(s)->Handle = spinboxHandle;
+	uiUnixFinishNewControl(s, uiSpinbox);
 
-	uiSpinbox(s)->Value = spinboxValue;
-	uiSpinbox(s)->SetValue = spinboxSetValue;
-	uiSpinbox(s)->OnChanged = spinboxOnChanged;
-
-	return uiSpinbox(s);
+	return s;
 }