Re: [AD] key scan codes have changed?

[Elias Pschernig <allefant@xxxxxxxxxx>]

Hm, posting this from windows with gmail.. and of course, my reply I
sent this morning isn't here (which is really odd, since the archiv on
SF has it..)

Anyway, the attached patch should make Alt+key always return 0 as
ascii code for readkey().

Index: src/win/wkeybd.c
===================================================================
RCS file: /cvsroot/alleg/allegro/src/win/wkeybd.c,v
retrieving revision 1.32
diff -u -p -r1.32 wkeybd.c
--- src/win/wkeybd.c	8 Apr 2005 16:08:04 -0000	1.32
+++ src/win/wkeybd.c	25 Apr 2005 13:33:50 -0000
@@ -256,23 +256,29 @@ static void handle_key_press(unsigned ch
          vkey = VK_RETURN;
    }
 
-   /* TODO: is there an advantage using this? maybe it would allow chinese and so on
-    * characters? For now, always ToAscii is used. */
-   //n = ToUnicode(vkey, scancode, keystate, chars, 16, 0);
-   n = ToAscii(vkey, scancode, keystate, (WORD *)chars, 0);
-   if (n == 1)
-   {
-      WCHAR wstr[2];
-      MultiByteToWideChar(CP_ACP, MB_PRECOMPOSED, (LPCSTR)chars, n, wstr, 2);
-      unicode = wstr[0];
+   /* When alt key is pressed, any key always must return ASCII 0 in Allegro. */
+   if (keystate[VK_LMENU] & 0x80) {
+      unicode = 0;
    }
-   else
-   {
-      /* Don't generate key presses for modifier keys. */
-      if (mycode >= KEY_MODIFIERS || n != 0)
-         unicode = -1;
+   else {
+      /* TODO: is there an advantage using ToUnicode? maybe it would allow
+       * Chinese and so on characters? For now, always ToAscii is used. */
+      //n = ToUnicode(vkey, scancode, keystate, chars, 16, 0);
+      n = ToAscii(vkey, scancode, keystate, (WORD *)chars, 0);
+      if (n == 1)
+      {
+	 WCHAR wstr[2];
+	 MultiByteToWideChar(CP_ACP, MB_PRECOMPOSED, (LPCSTR)chars, n, wstr, 2);
+	 unicode = wstr[0];
+      }
       else
-         unicode = 0;
+      {
+	 /* Don't generate key presses for modifier keys or dead keys */
+	 if (mycode >= KEY_MODIFIERS || n != 0)
+	    unicode = -1;
+	 else
+	    unicode = 0;
+      }
    }
 
    _handle_key_press(unicode, mycode);