| Message ID | 20240909061552.6122-1-vr_qemu@t-online.de |
|---|---|
| State | New |
| Headers | show |
| Series | [1/3] ui/sdl2: reenable the SDL2 Windows keyboard hook procedure | expand |
Hi On Mon, Sep 9, 2024 at 10:22 AM Volker Rümelin <vr_qemu@t-online.de> wrote: > > Windows only: > > The libSDL2 Windows message loop needs the libSDL2 Windows low > level keyboard hook procedure to grab the left and right Windows > keys correctly. Reenable the SDL2 Windows keyboard hook procedure. > > Because the QEMU Windows keyboard hook procedure is still needed > to filter out the special left Control key event for every Alt Gr > key event, it's important to install the two keyboard hook > procedures in the following order. First the SDL2 procedure, then > the QEMU procedure. > > Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2139 > Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2323 > Tested-by: Howard Spoelstra <hsp.cat7@gmail.com> > Signed-off-by: Volker Rümelin <vr_qemu@t-online.de> > --- > ui/sdl2.c | 53 ++++++++++++++++++++++++++++++--------------- > ui/win32-kbd-hook.c | 3 +++ > 2 files changed, 38 insertions(+), 18 deletions(-) > > diff --git a/ui/sdl2.c b/ui/sdl2.c > index 98ed974371..ac37c173a1 100644 > --- a/ui/sdl2.c > +++ b/ui/sdl2.c > @@ -42,6 +42,7 @@ static SDL_Surface *guest_sprite_surface; > static int gui_grab; /* if true, all keyboard/mouse events are grabbed */ > static bool alt_grab; > static bool ctrl_grab; > +static bool win32_kbd_grab; > > static int gui_saved_grab; > static int gui_fullscreen; > @@ -202,6 +203,19 @@ static void sdl_update_caption(struct sdl2_console *scon) > } > } > > +static void *sdl2_win32_get_hwnd(struct sdl2_console *scon) > +{ > +#ifdef CONFIG_WIN32 > + SDL_SysWMinfo info; > + > + SDL_VERSION(&info.version); > + if (SDL_GetWindowWMInfo(scon->real_window, &info)) { > + return info.info.win.window; > + } > +#endif > + return NULL; > +} > + > static void sdl_hide_cursor(struct sdl2_console *scon) > { > if (scon->opts->has_show_cursor && scon->opts->show_cursor) { > @@ -259,9 +273,16 @@ static void sdl_grab_start(struct sdl2_console *scon) > } else { > sdl_hide_cursor(scon); > } > + /* > + * Windows: To ensure that QEMU's low level keyboard hook procedure is > + * called before SDL2's, the QEMU procedure must first be removed and > + * then the SDL2 and QEMU procedures must be installed in this order. > + */ > + win32_kbd_set_window(NULL); > SDL_SetWindowGrab(scon->real_window, SDL_TRUE); > + win32_kbd_set_window(sdl2_win32_get_hwnd(scon)); > gui_grab = 1; > - win32_kbd_set_grab(true); > + win32_kbd_set_grab(win32_kbd_grab); > sdl_update_caption(scon); > } > > @@ -370,19 +391,6 @@ static int get_mod_state(void) > } > } > > -static void *sdl2_win32_get_hwnd(struct sdl2_console *scon) > -{ > -#ifdef CONFIG_WIN32 > - SDL_SysWMinfo info; > - > - SDL_VERSION(&info.version); > - if (SDL_GetWindowWMInfo(scon->real_window, &info)) { > - return info.info.win.window; > - } > -#endif > - return NULL; > -} > - > static void handle_keydown(SDL_Event *ev) > { > int win; > @@ -605,7 +613,7 @@ static void handle_windowevent(SDL_Event *ev) > sdl2_redraw(scon); > break; > case SDL_WINDOWEVENT_FOCUS_GAINED: > - win32_kbd_set_grab(gui_grab); > + win32_kbd_set_grab(win32_kbd_grab && gui_grab); > if (qemu_console_is_graphic(scon->dcl.con)) { > win32_kbd_set_window(sdl2_win32_get_hwnd(scon)); > } > @@ -849,6 +857,7 @@ static void sdl2_display_init(DisplayState *ds, DisplayOptions *o) > uint8_t data = 0; > int i; > SDL_SysWMinfo info; > + SDL_version ver; > SDL_Surface *icon = NULL; > char *dir; > > @@ -866,10 +875,7 @@ static void sdl2_display_init(DisplayState *ds, DisplayOptions *o) > #ifdef SDL_HINT_VIDEO_X11_NET_WM_BYPASS_COMPOSITOR /* only available since SDL 2.0.8 */ > SDL_SetHint(SDL_HINT_VIDEO_X11_NET_WM_BYPASS_COMPOSITOR, "0"); > #endif > -#ifndef CONFIG_WIN32 > - /* QEMU uses its own low level keyboard hook procedure on Windows */ > SDL_SetHint(SDL_HINT_GRAB_KEYBOARD, "1"); > -#endif > #ifdef SDL_HINT_ALLOW_ALT_TAB_WHILE_GRABBED > SDL_SetHint(SDL_HINT_ALLOW_ALT_TAB_WHILE_GRABBED, "0"); > #endif > @@ -877,6 +883,17 @@ static void sdl2_display_init(DisplayState *ds, DisplayOptions *o) > SDL_EnableScreenSaver(); > memset(&info, 0, sizeof(info)); > SDL_VERSION(&info.version); > + /* > + * Since version 2.16.0 under Windows, SDL2 has its own low level > + * keyboard hook procedure to grab the keyboard. The remaining task of > + * QEMU's low level keyboard hook procedure is to filter out the special > + * left Control up/down key event for every Alt Gr key event on keyboards > + * with an international layout. > + */ > + SDL_GetVersion(&ver); > + if (ver.major == 2 && ver.minor < 16) { > + win32_kbd_grab = true; > + } > Note: there is no 2.16 release. They jumped from 2.0.22 to 2.24 (see https://github.com/libsdl-org/SDL/releases/tag/release-2.24.0) The windows hook was indeed added in 2.0.16, released on Aug 10, 2021. Given the distribution nature of the Windows binaries, I think we could simply depend on a much recent version without worrying about compatibility with < 2.0.16. This would help reduce the potential combinations of versions and bugs reports. > gui_fullscreen = o->has_full_screen && o->full_screen; > > diff --git a/ui/win32-kbd-hook.c b/ui/win32-kbd-hook.c > index 1ac237db9e..39d42134a2 100644 > --- a/ui/win32-kbd-hook.c > +++ b/ui/win32-kbd-hook.c > @@ -91,6 +91,9 @@ void win32_kbd_set_window(void *hwnd) > win32_unhook_notifier.notify = keyboard_hook_unhook; > qemu_add_exit_notifier(&win32_unhook_notifier); > } > + } else if (!hwnd && win32_keyboard_hook) { > + keyboard_hook_unhook(&win32_unhook_notifier, NULL); > + qemu_remove_exit_notifier(&win32_unhook_notifier); > } > > win32_window = hwnd; > -- > 2.35.3 >
Am 09.09.24 um 09:26 schrieb Marc-André Lureau: > Hi > > On Mon, Sep 9, 2024 at 10:22 AM Volker Rümelin <vr_qemu@t-online.de> wrote: >> Windows only: >> >> The libSDL2 Windows message loop needs the libSDL2 Windows low >> level keyboard hook procedure to grab the left and right Windows >> keys correctly. Reenable the SDL2 Windows keyboard hook procedure. >> >> Because the QEMU Windows keyboard hook procedure is still needed >> to filter out the special left Control key event for every Alt Gr >> key event, it's important to install the two keyboard hook >> procedures in the following order. First the SDL2 procedure, then >> the QEMU procedure. >> >> Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2139 >> Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2323 >> Tested-by: Howard Spoelstra <hsp.cat7@gmail.com> >> Signed-off-by: Volker Rümelin <vr_qemu@t-online.de> >> --- >> ui/sdl2.c | 53 ++++++++++++++++++++++++++++++--------------- >> ui/win32-kbd-hook.c | 3 +++ >> 2 files changed, 38 insertions(+), 18 deletions(-) >> >> diff --git a/ui/sdl2.c b/ui/sdl2.c >> index 98ed974371..ac37c173a1 100644 >> --- a/ui/sdl2.c >> +++ b/ui/sdl2.c >> @@ -42,6 +42,7 @@ static SDL_Surface *guest_sprite_surface; >> static int gui_grab; /* if true, all keyboard/mouse events are grabbed */ >> static bool alt_grab; >> static bool ctrl_grab; >> +static bool win32_kbd_grab; >> >> static int gui_saved_grab; >> static int gui_fullscreen; >> @@ -202,6 +203,19 @@ static void sdl_update_caption(struct sdl2_console *scon) >> } >> } >> >> +static void *sdl2_win32_get_hwnd(struct sdl2_console *scon) >> +{ >> +#ifdef CONFIG_WIN32 >> + SDL_SysWMinfo info; >> + >> + SDL_VERSION(&info.version); >> + if (SDL_GetWindowWMInfo(scon->real_window, &info)) { >> + return info.info.win.window; >> + } >> +#endif >> + return NULL; >> +} >> + >> static void sdl_hide_cursor(struct sdl2_console *scon) >> { >> if (scon->opts->has_show_cursor && scon->opts->show_cursor) { >> @@ -259,9 +273,16 @@ static void sdl_grab_start(struct sdl2_console *scon) >> } else { >> sdl_hide_cursor(scon); >> } >> + /* >> + * Windows: To ensure that QEMU's low level keyboard hook procedure is >> + * called before SDL2's, the QEMU procedure must first be removed and >> + * then the SDL2 and QEMU procedures must be installed in this order. >> + */ >> + win32_kbd_set_window(NULL); >> SDL_SetWindowGrab(scon->real_window, SDL_TRUE); >> + win32_kbd_set_window(sdl2_win32_get_hwnd(scon)); >> gui_grab = 1; >> - win32_kbd_set_grab(true); >> + win32_kbd_set_grab(win32_kbd_grab); >> sdl_update_caption(scon); >> } >> >> @@ -370,19 +391,6 @@ static int get_mod_state(void) >> } >> } >> >> -static void *sdl2_win32_get_hwnd(struct sdl2_console *scon) >> -{ >> -#ifdef CONFIG_WIN32 >> - SDL_SysWMinfo info; >> - >> - SDL_VERSION(&info.version); >> - if (SDL_GetWindowWMInfo(scon->real_window, &info)) { >> - return info.info.win.window; >> - } >> -#endif >> - return NULL; >> -} >> - >> static void handle_keydown(SDL_Event *ev) >> { >> int win; >> @@ -605,7 +613,7 @@ static void handle_windowevent(SDL_Event *ev) >> sdl2_redraw(scon); >> break; >> case SDL_WINDOWEVENT_FOCUS_GAINED: >> - win32_kbd_set_grab(gui_grab); >> + win32_kbd_set_grab(win32_kbd_grab && gui_grab); >> if (qemu_console_is_graphic(scon->dcl.con)) { >> win32_kbd_set_window(sdl2_win32_get_hwnd(scon)); >> } >> @@ -849,6 +857,7 @@ static void sdl2_display_init(DisplayState *ds, DisplayOptions *o) >> uint8_t data = 0; >> int i; >> SDL_SysWMinfo info; >> + SDL_version ver; >> SDL_Surface *icon = NULL; >> char *dir; >> >> @@ -866,10 +875,7 @@ static void sdl2_display_init(DisplayState *ds, DisplayOptions *o) >> #ifdef SDL_HINT_VIDEO_X11_NET_WM_BYPASS_COMPOSITOR /* only available since SDL 2.0.8 */ >> SDL_SetHint(SDL_HINT_VIDEO_X11_NET_WM_BYPASS_COMPOSITOR, "0"); >> #endif >> -#ifndef CONFIG_WIN32 >> - /* QEMU uses its own low level keyboard hook procedure on Windows */ >> SDL_SetHint(SDL_HINT_GRAB_KEYBOARD, "1"); >> -#endif >> #ifdef SDL_HINT_ALLOW_ALT_TAB_WHILE_GRABBED >> SDL_SetHint(SDL_HINT_ALLOW_ALT_TAB_WHILE_GRABBED, "0"); >> #endif >> @@ -877,6 +883,17 @@ static void sdl2_display_init(DisplayState *ds, DisplayOptions *o) >> SDL_EnableScreenSaver(); >> memset(&info, 0, sizeof(info)); >> SDL_VERSION(&info.version); >> + /* >> + * Since version 2.16.0 under Windows, SDL2 has its own low level >> + * keyboard hook procedure to grab the keyboard. The remaining task of >> + * QEMU's low level keyboard hook procedure is to filter out the special >> + * left Control up/down key event for every Alt Gr key event on keyboards >> + * with an international layout. >> + */ >> + SDL_GetVersion(&ver); >> + if (ver.major == 2 && ver.minor < 16) { >> + win32_kbd_grab = true; >> + } >> > Note: there is no 2.16 release. They jumped from 2.0.22 to 2.24 (see > https://github.com/libsdl-org/SDL/releases/tag/release-2.24.0) Hi Marc-André Oh. This means that the comparison I wrote is true for SDL2 versions < 2.24.0. > > The windows hook was indeed added in 2.0.16, released on Aug 10, 2021. > > Given the distribution nature of the Windows binaries, I think we > could simply depend on a much recent version without worrying about > compatibility with < 2.0.16. This would help reduce the potential > combinations of versions and bugs reports. Okay, I'll send a version 2 patch series. With best regards Volker > >> gui_fullscreen = o->has_full_screen && o->full_screen; >> >> diff --git a/ui/win32-kbd-hook.c b/ui/win32-kbd-hook.c >> index 1ac237db9e..39d42134a2 100644 >> --- a/ui/win32-kbd-hook.c >> +++ b/ui/win32-kbd-hook.c >> @@ -91,6 +91,9 @@ void win32_kbd_set_window(void *hwnd) >> win32_unhook_notifier.notify = keyboard_hook_unhook; >> qemu_add_exit_notifier(&win32_unhook_notifier); >> } >> + } else if (!hwnd && win32_keyboard_hook) { >> + keyboard_hook_unhook(&win32_unhook_notifier, NULL); >> + qemu_remove_exit_notifier(&win32_unhook_notifier); >> } >> >> win32_window = hwnd; >> -- >> 2.35.3 >>
Hi Volker, On 9/9/24 21:38, Volker Rümelin wrote: > Am 09.09.24 um 09:26 schrieb Marc-André Lureau: >> Hi >> >> On Mon, Sep 9, 2024 at 10:22 AM Volker Rümelin <vr_qemu@t-online.de> wrote: >>> Windows only: >>> >>> The libSDL2 Windows message loop needs the libSDL2 Windows low >>> level keyboard hook procedure to grab the left and right Windows >>> keys correctly. Reenable the SDL2 Windows keyboard hook procedure. >>> >>> Because the QEMU Windows keyboard hook procedure is still needed >>> to filter out the special left Control key event for every Alt Gr >>> key event, it's important to install the two keyboard hook >>> procedures in the following order. First the SDL2 procedure, then >>> the QEMU procedure. >>> >>> Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2139 >>> Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2323 >>> Tested-by: Howard Spoelstra <hsp.cat7@gmail.com> >>> Signed-off-by: Volker Rümelin <vr_qemu@t-online.de> >>> --- >>> ui/sdl2.c | 53 ++++++++++++++++++++++++++++++--------------- >>> ui/win32-kbd-hook.c | 3 +++ >>> 2 files changed, 38 insertions(+), 18 deletions(-) >> Note: there is no 2.16 release. They jumped from 2.0.22 to 2.24 (see >> https://github.com/libsdl-org/SDL/releases/tag/release-2.24.0) > > Hi Marc-André > > Oh. This means that the comparison I wrote is true for SDL2 versions < > 2.24.0. > >> >> The windows hook was indeed added in 2.0.16, released on Aug 10, 2021. >> >> Given the distribution nature of the Windows binaries, I think we >> could simply depend on a much recent version without worrying about >> compatibility with < 2.0.16. This would help reduce the potential >> combinations of versions and bugs reports. > > Okay, I'll send a version 2 patch series. Queuing patches 2 & 3 meanwhile. Please do not bury series within threads, if Bernhard hadn't sent his T-b tag, I'd have missed it. Regards, Phil.
On 11/9/24 13:57, Philippe Mathieu-Daudé wrote: > Hi Volker, > > On 9/9/24 21:38, Volker Rümelin wrote: >> Am 09.09.24 um 09:26 schrieb Marc-André Lureau: >>> Hi >>> >>> On Mon, Sep 9, 2024 at 10:22 AM Volker Rümelin <vr_qemu@t-online.de> >>> wrote: >>>> Windows only: >>>> >>>> The libSDL2 Windows message loop needs the libSDL2 Windows low >>>> level keyboard hook procedure to grab the left and right Windows >>>> keys correctly. Reenable the SDL2 Windows keyboard hook procedure. >>>> >>>> Because the QEMU Windows keyboard hook procedure is still needed >>>> to filter out the special left Control key event for every Alt Gr >>>> key event, it's important to install the two keyboard hook >>>> procedures in the following order. First the SDL2 procedure, then >>>> the QEMU procedure. >>>> >>>> Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2139 >>>> Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2323 >>>> Tested-by: Howard Spoelstra <hsp.cat7@gmail.com> >>>> Signed-off-by: Volker Rümelin <vr_qemu@t-online.de> >>>> --- >>>> ui/sdl2.c | 53 >>>> ++++++++++++++++++++++++++++++--------------- >>>> ui/win32-kbd-hook.c | 3 +++ >>>> 2 files changed, 38 insertions(+), 18 deletions(-) > > >>> Note: there is no 2.16 release. They jumped from 2.0.22 to 2.24 (see >>> https://github.com/libsdl-org/SDL/releases/tag/release-2.24.0) >> >> Hi Marc-André >> >> Oh. This means that the comparison I wrote is true for SDL2 versions < >> 2.24.0. >> >>> >>> The windows hook was indeed added in 2.0.16, released on Aug 10, 2021. >>> >>> Given the distribution nature of the Windows binaries, I think we >>> could simply depend on a much recent version without worrying about >>> compatibility with < 2.0.16. This would help reduce the potential >>> combinations of versions and bugs reports. >> >> Okay, I'll send a version 2 patch series. > > Queuing patches 2 & 3 meanwhile. Please do not bury series within > threads, if Bernhard hadn't sent his T-b tag, I'd have missed it. Oh actually this is a series with a cover, but the cover subject doesn't contains 'PATCH' which is why my git tool missed it.
Am 11. September 2024 11:59:25 UTC schrieb "Philippe Mathieu-Daudé" <philmd@linaro.org>: >On 11/9/24 13:57, Philippe Mathieu-Daudé wrote: >> Hi Volker, >> >> On 9/9/24 21:38, Volker Rümelin wrote: >>> Am 09.09.24 um 09:26 schrieb Marc-André Lureau: >>>> Hi >>>> >>>> On Mon, Sep 9, 2024 at 10:22 AM Volker Rümelin <vr_qemu@t-online.de> wrote: >>>>> Windows only: >>>>> >>>>> The libSDL2 Windows message loop needs the libSDL2 Windows low >>>>> level keyboard hook procedure to grab the left and right Windows >>>>> keys correctly. Reenable the SDL2 Windows keyboard hook procedure. >>>>> >>>>> Because the QEMU Windows keyboard hook procedure is still needed >>>>> to filter out the special left Control key event for every Alt Gr >>>>> key event, it's important to install the two keyboard hook >>>>> procedures in the following order. First the SDL2 procedure, then >>>>> the QEMU procedure. >>>>> >>>>> Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2139 >>>>> Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2323 >>>>> Tested-by: Howard Spoelstra <hsp.cat7@gmail.com> >>>>> Signed-off-by: Volker Rümelin <vr_qemu@t-online.de> >>>>> --- >>>>> ui/sdl2.c | 53 ++++++++++++++++++++++++++++++--------------- >>>>> ui/win32-kbd-hook.c | 3 +++ >>>>> 2 files changed, 38 insertions(+), 18 deletions(-) >> >> >>>> Note: there is no 2.16 release. They jumped from 2.0.22 to 2.24 (see >>>> https://github.com/libsdl-org/SDL/releases/tag/release-2.24.0) >>> >>> Hi Marc-André >>> >>> Oh. This means that the comparison I wrote is true for SDL2 versions < >>> 2.24.0. >>> >>>> >>>> The windows hook was indeed added in 2.0.16, released on Aug 10, 2021. >>>> >>>> Given the distribution nature of the Windows binaries, I think we >>>> could simply depend on a much recent version without worrying about >>>> compatibility with < 2.0.16. This would help reduce the potential >>>> combinations of versions and bugs reports. >>> >>> Okay, I'll send a version 2 patch series. >> >> Queuing patches 2 & 3 meanwhile. Please do not bury series within >> threads, if Bernhard hadn't sent his T-b tag, I'd have missed it. > >Oh actually this is a series with a cover, but the cover subject >doesn't contains 'PATCH' which is why my git tool missed it. > For me, `git am` didn't work after downloading the series' mbox. I had to download each patch mail individually and apply one by one. Then I could test the series.
diff --git a/ui/sdl2.c b/ui/sdl2.c index 98ed974371..ac37c173a1 100644 --- a/ui/sdl2.c +++ b/ui/sdl2.c @@ -42,6 +42,7 @@ static SDL_Surface *guest_sprite_surface; static int gui_grab; /* if true, all keyboard/mouse events are grabbed */ static bool alt_grab; static bool ctrl_grab; +static bool win32_kbd_grab; static int gui_saved_grab; static int gui_fullscreen; @@ -202,6 +203,19 @@ static void sdl_update_caption(struct sdl2_console *scon) } } +static void *sdl2_win32_get_hwnd(struct sdl2_console *scon) +{ +#ifdef CONFIG_WIN32 + SDL_SysWMinfo info; + + SDL_VERSION(&info.version); + if (SDL_GetWindowWMInfo(scon->real_window, &info)) { + return info.info.win.window; + } +#endif + return NULL; +} + static void sdl_hide_cursor(struct sdl2_console *scon) { if (scon->opts->has_show_cursor && scon->opts->show_cursor) { @@ -259,9 +273,16 @@ static void sdl_grab_start(struct sdl2_console *scon) } else { sdl_hide_cursor(scon); } + /* + * Windows: To ensure that QEMU's low level keyboard hook procedure is + * called before SDL2's, the QEMU procedure must first be removed and + * then the SDL2 and QEMU procedures must be installed in this order. + */ + win32_kbd_set_window(NULL); SDL_SetWindowGrab(scon->real_window, SDL_TRUE); + win32_kbd_set_window(sdl2_win32_get_hwnd(scon)); gui_grab = 1; - win32_kbd_set_grab(true); + win32_kbd_set_grab(win32_kbd_grab); sdl_update_caption(scon); } @@ -370,19 +391,6 @@ static int get_mod_state(void) } } -static void *sdl2_win32_get_hwnd(struct sdl2_console *scon) -{ -#ifdef CONFIG_WIN32 - SDL_SysWMinfo info; - - SDL_VERSION(&info.version); - if (SDL_GetWindowWMInfo(scon->real_window, &info)) { - return info.info.win.window; - } -#endif - return NULL; -} - static void handle_keydown(SDL_Event *ev) { int win; @@ -605,7 +613,7 @@ static void handle_windowevent(SDL_Event *ev) sdl2_redraw(scon); break; case SDL_WINDOWEVENT_FOCUS_GAINED: - win32_kbd_set_grab(gui_grab); + win32_kbd_set_grab(win32_kbd_grab && gui_grab); if (qemu_console_is_graphic(scon->dcl.con)) { win32_kbd_set_window(sdl2_win32_get_hwnd(scon)); } @@ -849,6 +857,7 @@ static void sdl2_display_init(DisplayState *ds, DisplayOptions *o) uint8_t data = 0; int i; SDL_SysWMinfo info; + SDL_version ver; SDL_Surface *icon = NULL; char *dir; @@ -866,10 +875,7 @@ static void sdl2_display_init(DisplayState *ds, DisplayOptions *o) #ifdef SDL_HINT_VIDEO_X11_NET_WM_BYPASS_COMPOSITOR /* only available since SDL 2.0.8 */ SDL_SetHint(SDL_HINT_VIDEO_X11_NET_WM_BYPASS_COMPOSITOR, "0"); #endif -#ifndef CONFIG_WIN32 - /* QEMU uses its own low level keyboard hook procedure on Windows */ SDL_SetHint(SDL_HINT_GRAB_KEYBOARD, "1"); -#endif #ifdef SDL_HINT_ALLOW_ALT_TAB_WHILE_GRABBED SDL_SetHint(SDL_HINT_ALLOW_ALT_TAB_WHILE_GRABBED, "0"); #endif @@ -877,6 +883,17 @@ static void sdl2_display_init(DisplayState *ds, DisplayOptions *o) SDL_EnableScreenSaver(); memset(&info, 0, sizeof(info)); SDL_VERSION(&info.version); + /* + * Since version 2.16.0 under Windows, SDL2 has its own low level + * keyboard hook procedure to grab the keyboard. The remaining task of + * QEMU's low level keyboard hook procedure is to filter out the special + * left Control up/down key event for every Alt Gr key event on keyboards + * with an international layout. + */ + SDL_GetVersion(&ver); + if (ver.major == 2 && ver.minor < 16) { + win32_kbd_grab = true; + } gui_fullscreen = o->has_full_screen && o->full_screen; diff --git a/ui/win32-kbd-hook.c b/ui/win32-kbd-hook.c index 1ac237db9e..39d42134a2 100644 --- a/ui/win32-kbd-hook.c +++ b/ui/win32-kbd-hook.c @@ -91,6 +91,9 @@ void win32_kbd_set_window(void *hwnd) win32_unhook_notifier.notify = keyboard_hook_unhook; qemu_add_exit_notifier(&win32_unhook_notifier); } + } else if (!hwnd && win32_keyboard_hook) { + keyboard_hook_unhook(&win32_unhook_notifier, NULL); + qemu_remove_exit_notifier(&win32_unhook_notifier); } win32_window = hwnd;