diff --git a/zOLD_common/control.c b/zOLD_common/control.c
index 16cce968..cdcd2d2d 100644
--- a/zOLD_common/control.c
+++ b/zOLD_common/control.c
@@ -7,16 +7,6 @@ uintptr_t uiControlHandle(uiControl *c)
 	return (*(c->Handle))(c);
 }
 
-uiControl *uiControlParent(uiControl *c)
-{
-	return (*(c->Parent))(c);
-}
-
-void uiControlSetParent(uiControl *c, uiControl *parent)
-{
-	(*(c->SetParent))(c, parent);
-}
-
 int uiControlToplevel(uiControl *c)
 {
 	return (*(c->Toplevel))(c);
@@ -52,19 +42,6 @@ void uiControlDisable(uiControl *c)
 	(*(c->Disable))(c);
 }
 
-void uiControlVerifySetParent(uiControl *c, uiControl *parent)
-{
-	uiControl *curParent;
-
-	if (uiControlToplevel(c))
-		uiprivUserBug("You cannot give a toplevel uiControl a parent. (control: %p)", c);
-	curParent = uiControlParent(c);
-	if (parent != NULL && curParent != NULL)
-		uiprivUserBug("You cannot give a uiControl a parent while it already has one. (control: %p; current parent: %p; new parent: %p)", c, curParent, parent);
-	if (parent == NULL && curParent == NULL)
-		uiprivImplBug("attempt to double unparent uiControl %p", c);
-}
-
 int uiControlEnabledToUser(uiControl *c)
 {
 	while (c != NULL) {
diff --git a/zOLD_ui.h b/zOLD_ui.h
index b09ce4fa..db57278c 100644
--- a/zOLD_ui.h
+++ b/zOLD_ui.h
@@ -41,13 +41,7 @@ uiprivExtern void uiFreeText(char *text);
 typedef struct uiControl uiControl;
 
 struct uiControl {
-	uint32_t Signature;
-	uint32_t OSSignature;
-	uint32_t TypeSignature;
-	void (*Destroy)(uiControl *);
 	uintptr_t (*Handle)(uiControl *);
-	uiControl *(*Parent)(uiControl *);
-	void (*SetParent)(uiControl *, uiControl *);
 	int (*Toplevel)(uiControl *);
 	int (*Visible)(uiControl *);
 	void (*Show)(uiControl *);
@@ -58,10 +52,7 @@ struct uiControl {
 };
 // TOOD add argument names to all arguments
 #define uiControl(this) ((uiControl *) (this))
-uiprivExtern void uiControlDestroy(uiControl *);
 uiprivExtern uintptr_t uiControlHandle(uiControl *);
-uiprivExtern uiControl *uiControlParent(uiControl *);
-uiprivExtern void uiControlSetParent(uiControl *, uiControl *);
 uiprivExtern int uiControlToplevel(uiControl *);
 uiprivExtern int uiControlVisible(uiControl *);
 uiprivExtern void uiControlShow(uiControl *);
@@ -74,7 +65,6 @@ uiprivExtern uiControl *uiAllocControl(size_t n, uint32_t OSsig, uint32_t typesi
 uiprivExtern void uiFreeControl(uiControl *);
 
 // TODO make sure all controls have these
-uiprivExtern void uiControlVerifySetParent(uiControl *, uiControl *);
 uiprivExtern int uiControlEnabledToUser(uiControl *);
 
 uiprivExtern void uiUserBugCannotSetParentOnToplevel(const char *type);