From 617dc2ce12eb6183b4ae3d3fe73572e43629c825 Mon Sep 17 00:00:00 2001
From: ManoloFLTK <41016272+ManoloFLTK@users.noreply.github.com>
Date: Thu, 23 Jun 2022 19:12:35 +0200
Subject: Fix for issue #450:  Fl_Counter slips into infinite loop.

This issue revealed that the macOS and Wayland platform processed events slightly differently
from other platforms.
Under X11 and Windows, Fl::wait() processes one event if one is present, and also all other events
present in the event queue immediately after the processing of that event.
Under macOS and Wayland, Fl::wait() processes one event if one is present and returns.

This commits makes the macOS and Wayland platforms behave as other platforms.
---
 src/drivers/Wayland/Fl_Wayland_Screen_Driver.cxx | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'src/drivers')

diff --git a/src/drivers/Wayland/Fl_Wayland_Screen_Driver.cxx b/src/drivers/Wayland/Fl_Wayland_Screen_Driver.cxx
index 81f6b9258..dad143cb0 100644
--- a/src/drivers/Wayland/Fl_Wayland_Screen_Driver.cxx
+++ b/src/drivers/Wayland/Fl_Wayland_Screen_Driver.cxx
@@ -1058,6 +1058,8 @@ static const struct wl_registry_listener registry_listener = {
 
 static void fd_callback(int unused, struct wl_display *display) {
   wl_display_dispatch(display);
+  static Fl_Wayland_System_Driver *sys_dr = (Fl_Wayland_System_Driver*)Fl::system_driver();
+  while (sys_dr->poll_or_select() > 0) wl_display_dispatch(display);
 }
 
 
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