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-rw-r--r--osdep/macosx_compat.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/osdep/macosx_compat.h b/osdep/macosx_compat.h
index 2b75c7695e..0c2e87d14c 100644
--- a/osdep/macosx_compat.h
+++ b/osdep/macosx_compat.h
@@ -25,6 +25,11 @@
#include "osdep/macosx_versions.h"
#if (MAC_OS_X_VERSION_MAX_ALLOWED < MAC_OS_X_VERSION_10_12)
+
+@interface NSWindow (macOS10_12_SDK)
++ (void)setAllowsAutomaticWindowTabbing:(BOOL)allow;
+@end
+
typedef NSUInteger NSWindowStyleMask;
static const NSWindowStyleMask NSWindowStyleMaskClosable = NSClosableWindowMask;
static const NSWindowStyleMask NSWindowStyleMaskTitled = NSTitledWindowMask;