SDL2: fix handling of the AltGr key on Windows again

[Volker Rümelin]

Based-on: <20230417192139.43263-1-shentey@gmail.com>
("[PATCH v2 0/2] SDL2 usability fixes")

Windows sends an extra left control key up/down input event for every 
right alt key up/down input event for keyboards with international 
layout. Since commit 830473455f ("ui/sdl2: fix handling of AltGr key on 
Windows") QEMU uses a Windows low level keyboard hook procedure to 
reliably filter out the special left control key and to grab the 
keyboard on Windows.

SDL2 version 2.0.16 introduced its own Windows low level keyboard hook 
procedure to grab the keyboard. When enabled with a grabbed keyboard, 
this disables the special left control key filter and handling of the 
AltGr key on Windows is broken again.

This patch fixes handling of the AltGr key on Windows with international 
keyboard layout.

Volker Rümelin (1):
  ui/sdl2: disable SDL_HINT_GRAB_KEYBOARD on Windows

 ui/sdl2.c | 3 +++
 1 file changed, 3 insertions(+)

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2.35.3