From 482da12f717040e4c07a0ffb03cc2d3fd6a4d012 Mon Sep 17 00:00:00 2001
From: ManoloFLTK <41016272+ManoloFLTK@users.noreply.github.com>
Date: Sat, 1 Jun 2024 16:48:27 +0200
Subject:  Fix: Zero-sized borderless window causes high cpu usage on windows
 (#985)

---
 src/Fl_win32.cxx | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'src')

diff --git a/src/Fl_win32.cxx b/src/Fl_win32.cxx
index ce5cf0c72..45474fd0f 100644
--- a/src/Fl_win32.cxx
+++ b/src/Fl_win32.cxx
@@ -2211,7 +2211,7 @@ void Fl_WinAPI_Window_Driver::makeWindow() {
   if (!fl_clipboard_notify_empty() && clipboard_wnd == NULL)
     fl_clipboard_notify_target((HWND)x->xid);
 
-  wait_for_expose_value = 1;
+  wait_for_expose_value = ((wp == 0 || hp == 0) && !w->border() && !w->parent() ? 0 : 1); // issue #985
   if (show_iconic()) {
     showit = 0;
     show_iconic(0);
-- 
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