From cfc6d6ddb7aad50d27663fbdecc1a43d6846b76f Mon Sep 17 00:00:00 2001
From: Philip Zander <philip.zander@gmail.com>
Date: Sat, 29 Jan 2022 22:36:40 +0100
Subject: [PATCH] gdkkeys-win32: Ignore CTRL bit for key translation

Some keymaps on Windows contain bogus mappings for Ctrl+key for certain
keys, e.g. Ctrl+Backspace = Delete, or Ctrl+[ = 0x1B. These are never
used on Windows, so we should ignore them.

Fixes #4667
---
 gdk/win32/gdkkeys-win32-impl.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/gdk/win32/gdkkeys-win32-impl.c b/gdk/win32/gdkkeys-win32-impl.c
index 368f3f6506..74f9615c19 100644
--- a/gdk/win32/gdkkeys-win32-impl.c
+++ b/gdk/win32/gdkkeys-win32-impl.c
@@ -340,6 +340,13 @@ vk_to_char_fuzzy (GdkWin32KeymapLayoutInfo *info,
           if (candidate_modbits & ~mod_bits)
             continue;
 
+          /* Some keys have bogus mappings for the control key, e.g.
+           * Ctrl + Backspace = Delete, or Ctrl + [ = 0x1B. These are
+           * never used on Windows, so we ignore them.
+           */
+          if (candidate_modbits == KBDCTRL)
+            continue;
+
           c = entry->wch[level];
           if (c == WCH_DEAD || have_sgcaps)
             {