[PATCH 06/10] ui/sdl2: fix handling of AltGr key on Windows

["Volker Rümelin" <vr_qemu@t-online.de>]

Wire up the keyboard hooking code on Windows to fix the AltGr
key and improve keyboard grabbing.

Signed-off-by: Volker Rümelin <vr_qemu@t-online.de>
---
 ui/sdl2.c | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/ui/sdl2.c b/ui/sdl2.c
index 3c9424eb42..ec1cb8131f 100644
--- a/ui/sdl2.c
+++ b/ui/sdl2.c
@@ -30,6 +30,9 @@
 #include "ui/sdl2.h"
 #include "sysemu/runstate.h"
 #include "sysemu/sysemu.h"
+#ifdef CONFIG_WIN32
+#include "win32-kbd-hook.h"
+#endif
 
 static int sdl2_num_outputs;
 static struct sdl2_console *sdl2_console;
@@ -220,6 +223,9 @@ static void sdl_grab_start(struct sdl2_console *scon)
     }
     SDL_SetWindowGrab(scon->real_window, SDL_TRUE);
     gui_grab = 1;
+#ifdef CONFIG_WIN32
+    win32_kbd_set_grab(true);
+#endif
     sdl_update_caption(scon);
 }
 
@@ -227,6 +233,9 @@ static void sdl_grab_end(struct sdl2_console *scon)
 {
     SDL_SetWindowGrab(scon->real_window, SDL_FALSE);
     gui_grab = 0;
+#ifdef CONFIG_WIN32
+    win32_kbd_set_grab(false);
+#endif
     sdl_show_cursor(scon);
     sdl_update_caption(scon);
 }
@@ -532,6 +541,18 @@ static void handle_windowevent(SDL_Event *ev)
         sdl2_redraw(scon);
         break;
     case SDL_WINDOWEVENT_FOCUS_GAINED:
+#ifdef CONFIG_WIN32
+        if (qemu_console_is_graphic(scon->dcl.con)) {
+            SDL_SysWMinfo info;
+
+            SDL_VERSION(&info.version);
+            if (SDL_GetWindowWMInfo(scon->real_window, &info)) {
+                win32_kbd_set_grab(gui_grab);
+                win32_kbd_set_window(info.info.win.window);
+            }
+        }
+#endif
+        /* fall through */
     case SDL_WINDOWEVENT_ENTER:
         if (!gui_grab && (qemu_input_is_absolute() || absolute_enabled)) {
             absolute_mouse_grab(scon);
@@ -546,6 +567,11 @@ static void handle_windowevent(SDL_Event *ev)
         scon->ignore_hotkeys = get_mod_state();
         break;
     case SDL_WINDOWEVENT_FOCUS_LOST:
+#ifdef CONFIG_WIN32
+        if (qemu_console_is_graphic(scon->dcl.con)) {
+            win32_kbd_set_window(NULL);
+        }
+#endif
         if (gui_grab && !gui_fullscreen) {
             sdl_grab_end(scon);
         }
-- 
2.26.1