From 193c611fc2e482b3ae9e2d2d4518ce88eb399d49 Mon Sep 17 00:00:00 2001
From: Manolo Gouy <Manolo>
Date: Wed, 11 Oct 2017 15:19:45 +0000
Subject: Better implementation of Fl_Cocoa_Window_Driver::wait_for_expose()
 for Mac OS 10.13 High Sierra.

git-svn-id: file:///fltk/svn/fltk/branches/branch-1.4@12486 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
---
 src/Fl_cocoa.mm | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

(limited to 'src')

diff --git a/src/Fl_cocoa.mm b/src/Fl_cocoa.mm
index 3b3a9a466..32193655e 100644
--- a/src/Fl_cocoa.mm
+++ b/src/Fl_cocoa.mm
@@ -3084,7 +3084,14 @@ void Fl_Cocoa_Window_Driver::size_range() {
 
 void Fl_Cocoa_Window_Driver::wait_for_expose()
 {
-  [fl_xid(pWindow) recursivelySendToSubwindows:@selector(waitForExpose)];
+    if (fl_mac_os_version < 101300) {
+        [fl_xid(pWindow) recursivelySendToSubwindows:@selector(waitForExpose)];
+    } else {
+        NSEvent *event = [NSApp nextEventMatchingMask:NSAnyEventMask
+                                            untilDate:[NSDate dateWithTimeIntervalSinceNow:0]
+                                               inMode:NSDefaultRunLoopMode dequeue:YES];
+        if (event) [NSApp postEvent:event atStart:NO];
+    }
 }
 
 /*
-- 
cgit v1.2.3