win32u: Allow KBDTABLES conversion from CTRL + ALT to WCHAR.

dlls/win32u/input.c

@@ -514,7 +514,7 @@ static WCHAR kbd_tables_vkey_to_wchar( const KBDTABLES *tables, UINT vkey, const
     ctrl = state[VK_CONTROL] & 0x80;
     caps = state[VK_CAPITAL] & 1;
 
-    if (ctrl && alt) return WCH_NONE;
+    if (ctrl && alt && !(tables->fLocaleFlags & KLLF_ALTGR)) return WCH_NONE;
     if (!ctrl && vkey == VK_ESCAPE) return VK_ESCAPE;
     if (ctrl && !alt)
     {

include/kbd.h

@@ -40,6 +40,10 @@
 #define KANALOK          0x08
 #define GRPSELTAP        0x80
 
+#define KLLF_ALTGR       0x0001
+#define KLLF_SHIFTLOCK   0x0002
+#define KLLF_LRM_RLM     0x0004
+
 typedef struct
 {
     BYTE Vk;