Migrated darwin/tab.m and fixed up the other files. Now for darwin/control.m, then we can test...

darwin/button.m

@@ -59,9 +59,13 @@ static buttonDelegateClass *buttonDelegate = nil;
 
 uiDarwinControlAllDefaultsExceptDestroy(uiButton, button)
 
-static void uiButtonDestroy(uiControl *b)
+static void uiButtonDestroy(uiControl *c)
 {
-	[buttonDelegate unregisterButton:uiButton(b)];
+	uiButton *b = uiButton(c);
+
+	[buttonDelegate unregisterButton:b];
+	[b->button release];
+	uiFreeControl(uiControl(b));
 }
 
 char *uiButtonText(uiButton *b)

darwin/checkbox.m

@@ -61,9 +61,13 @@ static checkboxDelegateClass *checkboxDelegate = nil;
 
 uiDarwinControlAllDefaultsExceptDestroy(uiCheckbox, button)
 
-static void uiCheckboxDestroy(uiControl *c)
+static void uiCheckboxDestroy(uiControl *cc)
 {
-	[checkboxDelegate unregisterCheckbox:uiCheckbox(c)];
+	uiCheckbox *c = uiCheckbox(cc);
+
+	[checkboxDelegate unregisterCheckbox:c];
+	[c->button release];
+	uiFreeControl(uiControl(c));
 }
 
 char *uiCheckboxText(uiCheckbox *c)

darwin/combobox.m

@@ -110,6 +110,8 @@ static void uiComboboxDestroy(uiControl *cc)
 		[c->pb unbind:@"selectedIndex"];
 		[c->pbac release];
 	}
+	[c->handle release];
+	uiFreeControl(uiControl(c));
 }
 
 void uiComboboxAppend(uiCombobox *c, const char *text)

darwin/entry.m

@@ -79,7 +79,11 @@ uiDarwinControlAllDefaultsExceptDestroy(uiEntry, textfield)
 
 static void uiEntryDestroy(uiControl *c)
 {
-	[entryDelegate unregisterEntry:uiEntry(c)];
+	uiEntry *e = uiEntry(c);
+
+	[entryDelegate unregisterEntry:e];
+	[e->textfield release];
+	uiFreeControl(e);
 }
 
 char *uiEntryText(uiEntry *e)

darwin/slider.m

@@ -81,7 +81,11 @@ uiDarwinControlAllDefaultsExceptDestroy(uiSlider, slider)
 
 static void uiSliderDestroy(uiControl *c)
 {
-	[sliderDelegate unregisterSlider:uiSlider(c)];
+	uiSlider *s = uiSlider(c);
+
+	[sliderDelegate unregisterSlider:s];
+	[s->slider release];
+	uiFreeControl(uiControl(s));
 }
 
 intmax_t uiSliderValue(uiSlider *s)

darwin/tab.m

@@ -1,6 +1,8 @@
 // 15 august 2015
 #import "uipriv_darwin.h"
 
+// TODO for this and group, make sure simply relaying ourselves out is enough (are the buttons and title, respectively, intrinsic?)
+
 struct uiTab {
 	uiDarwinControl c;
 	NSTabView *tabview;
@@ -12,16 +14,10 @@ struct uiTab {
 	NSMutableArray *margined;		// []NSNumber
 };
 
-static void onDestroy(uiTab *);
-
-uiDarwinDefineControlWithOnDestroy(
-	uiTab,								// type name
-	tabview,								// handle
-	onDestroy(this);						// on destroy
-)
-
-static void onDestroy(uiTab *t)
+static void uiTabDestroy(uiControl *c)
 {
+	uiTab *t = uiTab(c);
+
 	// first remove all tab pages so we can destroy all the children
 	while ([t->tabview numberOfTabViewItems] != 0)
 		[t->tabview removeTabViewItem:[t->tabview tabViewItemAtIndex:0]];
@@ -38,9 +34,25 @@ static void onDestroy(uiTab *t)
 	[t->pages release];
 	[t->views release];
 	[t->margined release];
+	[t->tabview release];
+	uiFreeControl(uiControl(t));
 }
 
+uiDarwinControlDefaultHandle(uiTab, tabview)
+uiDarwinControlDefaultParent(uiTab, tabview)
+uiDarwinControlDefaultSetParent(uiTab, tabview)
+uiDarwinControlDefaultToplevel(uiTab, tabview)
+uiDarwinControlDefaultVisible(uiTab, tabview)
+uiDarwinControlDefaultShow(uiTab, tabview)
+uiDarwinControlDefaultHide(uiTab, tabview)
+uiDarwinControlDefaultEnabled(uiTab, tabview)
+uiDarwinControlDefaultEnable(uiTab, tabview)
+uiDarwinControlDefaultDisable(uiTab, tabview)
+
 // TODO container update
+uiDarwinControlDefaultSyncEnableState(uiTab, tabview)
+
+uiDarwinControlDefaultSetSuperview(uiTab, tabview)
 
 static void tabRelayout(uiDarwinControl *c)
 {
@@ -97,7 +109,7 @@ void uiTabInsertAt(uiTab *t, const char *name, uintmax_t n, uiControl *child)
 	[i setView:view];
 	[t->tabview insertTabViewItem:i atIndex:n];
 
-	uiDarwinControlTriggerRelayout(uiDarwinControl(t));
+	tabRelayout(t);
 }
 
 void uiTabDelete(uiTab *t, uintmax_t n)
@@ -120,6 +132,8 @@ void uiTabDelete(uiTab *t, uintmax_t n)
 
 	i = [t->tabview tabViewItemAtIndex:n];
 	[t->tabview removeTabViewItem:i];
+
+	tabRelayout(t);
 }
 
 uintmax_t uiTabNumPages(uiTab *t)
@@ -141,14 +155,14 @@ void uiTabSetMargined(uiTab *t, uintmax_t n, int margined)
 
 	v = [NSNumber numberWithInt:margined];
 	[t->margined replaceObjectAtIndex:n withObject:v];
-	uiDarwinControlTriggerRelayout(uiDarwinControl(t));
+	tabRelayout(t);
 }
 
 uiTab *uiNewTab(void)
 {
 	uiTab *t;
 
-	t = (uiTab *) uiNewControl(uiTab);
+	uiDarwinNewControl(uiTab, t);
 
 	t->tabview = [[NSTabView alloc] initWithFrame:NSZeroRect];
 	// also good for NSTabView (same selector and everything)
@@ -158,8 +172,5 @@ uiTab *uiNewTab(void)
 	t->views = [NSMutableArray new];
 	t->margined = [NSMutableArray new];
 
-	uiDarwinFinishNewControl(t, uiTab);
-	uiDarwinControl(t)->Relayout = tabRelayout;
-
 	return t;
 }