Fixed most errors. Now I just need to add a sysData pool.

bleh_darwin.m

@@ -15,6 +15,9 @@ Go wrapper functions (bleh_darwin.go) call these directly and take care of stdin
 
 #include <Foundation/NSGeometry.h>
 
+/* exception to the above: cgo doesn't like Nil and delegate_darwin.go has //export so I can't have this there */
+Class NilClass = Nil;
+
 /*
 NSUInteger is listed as being in <objc/NSObjCRuntime.h>... which doesn't exist. Rather than relying on undocumented header file locations or explicitly typedef-ing NSUInteger to the (documented) unsigned long, I'll just place things here for maximum safety. I use uintptr_t as that should encompass every possible unsigned long.
 */

delegate_darwin.go

@@ -19,8 +19,6 @@ This creates a class goAppDelegate that will be used as the delegate for /everyt
 // #include "objc_darwin.h"
 // extern void appDelegate_uitask(id, SEL, id);		/* from uitask_darwin.go */
 // extern BOOL appDelegate_windowShouldClose(id, SEL, id);
-// /* because cgo doesn't like Nil */
-// static Class NilClass = Nil;
 import "C"
 
 var (
@@ -37,9 +35,7 @@ var (
 )
 
 func mkAppDelegate() error {
-	var appdelegateclass C.Class
-
-	appdelegateclass, err = makeDelegateClass(_goAppDelegate)
+	appdelegateclass, err := makeDelegateClass(_goAppDelegate)
 	if err != nil {
 		return fmt.Errorf("error creating NSApplication delegate: %v", err)
 	}

objc_darwin.h

@@ -10,12 +10,19 @@ Furthermore, Objective-C selectors work by basically sending the arguments to ob
 The format should be self-explanatory.
 */
 
+/* for some reason I now have to use an include guard after commit [master 9b4e30c] ("Started to build a single global delegate object; now to fix issues.") */
+#ifndef _OBJC_DARWIN_H_
+#define _OBJC_DARWIN_H_
+
 #include <objc/message.h>
 #include <objc/objc.h>
 #include <objc/runtime.h>
 
 #include <stdint.h>
 
+/* for delegate_darwin.go */
+extern Class NilClass;
+
 inline id objc_msgSend_noargs(id obj, SEL sel)
 {
 	return objc_msgSend(obj, sel);
@@ -77,3 +84,5 @@ m3(sel_id_bool, SEL, id, BOOL)
 
 extern id _objc_msgSend_rect_uint_uint_bool(id obj, SEL sel, int64_t x, int64_t y, int64_t w, int64_t h, uintptr_t b, uintptr_t c, BOOL d);
 m4(id_sel_id_id, id, SEL, id, id)
+
+#endif

uitask_darwin.go

@@ -2,7 +2,6 @@
 package ui
 
 import (
-	"fmt"
 	"runtime"
 	"unsafe"
 )