Bugfix EnumDisplayDevicesA when it convert the struct DISPLAY_DEVICE  to unicode it use ansi side of it. and that why it did fail.
Modified: trunk/reactos/lib/user32/misc/display.c

Modified: trunk/reactos/lib/user32/misc/display.c
--- trunk/reactos/lib/user32/misc/display.c	2005-12-06 20:18:59 UTC (rev 19940)
+++ trunk/reactos/lib/user32/misc/display.c	2005-12-06 22:53:48 UTC (rev 19941)
@@ -61,7 +61,7 @@
       return FALSE;
     }
 
-  DisplayDeviceW.cb = lpDisplayDevice->cb;
+  DisplayDeviceW.cb = sizeof(DISPLAY_DEVICEW);  
   rc = NtUserEnumDisplayDevices (
     &Device,
     iDevNum,