gg: fix macos C function definitions

CHANGELOG.md

@@ -22,8 +22,10 @@
 - Advanced vdoc search on mobile layout.
 - string's `left()`/`right` were removed in favor of slicing syntax: `str[..pos]`.
 - gg: native graphics mode on macOS/iOS (using Cocoa Drawing API).
-- Full path to consts must be specified everywhere. This allows shadowing consts safely and
-makes it easy to distinguish them from local variables.
+- Full path to consts must be specified everywhere. This makes it easy to distinguish them
+from local variables.
+- `__offsetof` for low level needs (works like `offsetof` in C).
+- vfmt now preserves empty lines, like gofmt.
 
 ## V 0.2.1
 *30 Dec 2020*

vlib/clipboard/clipboard_darwin.c.v

@@ -15,7 +15,7 @@ fn C.darwin_new_pasteboard() voidptr
 
 fn C.darwin_get_pasteboard_text(voidptr) byteptr
 
-fn C.darwin_set_pasteboard_text(string) bool
+fn C.darwin_set_pasteboard_text(voidptr, string) bool
 
 fn new_clipboard() &Clipboard {
 	cb := &Clipboard{

vlib/gg/gg_darwin.c.v

@@ -3,18 +3,18 @@ module gg
 #include "@VROOT/vlib/gg/gg_darwin.m"
 fn C.gg_get_screen_size() Size
 
-fn C.darwin_draw_string(x int, y int, s string)
+fn C.darwin_draw_string(x int, y int, s string, cfg voidptr)
 
 fn C.darwin_text_width(s string) int
 
 fn C.darwin_window_refresh()
 
-fn C.darwin_draw_rect(f32, f32, f32, f32)
+fn C.darwin_draw_rect(f32, f32, f32, f32, voidptr)
 
-fn C.darwin_create_image() Image
+fn C.darwin_create_image(path string) Image
 
 fn C.darwin_draw_image(f32, f32, f32, f32, &Image)
 
-fn C.darwin_draw_circle(f32, f32, f32)
+fn C.darwin_draw_circle(f32, f32, f32, voidptr)
 
 //, gx.Color c)