[Bug 2203] DOS Navigator failed to run

http://bugs.winehq.org/show_bug.cgi?id=2203

--- Comment #32 from [e-mail] 2013-04-07 06:45:18 CDT ---
Forget my last two commments, I figured out the problem.
It's all about the ZDrive http://www.dosbox.com/wiki/ZDrive in dosbox.
Wine tried to mount his z: drive, but dosbox wouldn't do so and it couldn't
execute the program. If you start your program from inside drive c: it is going
to work.
The following patch mounts wine's z: as y: and now you can start the program
from outside the .wine directory too.

@@ -184,12 +184,10 @@ static void start_dosbox( const char *appname, const char
*args )
         }
     for (i = 0; i <= 25; i++)
         if (drives & (1 << i))
-            p += sprintf( p, "mount %c %s/dosdevices/%c:\n", 'a' + i == 'z' ?
'y' : 'a' + i, config_dir, 'a' + i );
-    p += sprintf( p, "%c:\ncd ", path[0] == 'Z' ? 'Y' : path[0] );
+            p += sprintf( p, "mount %c %s/dosdevices/%c:\n", 'a' + i,
config_dir, 'a' + i );
+    p += sprintf( p, "%c:\ncd ", path[0] );
     p += WideCharToMultiByte( CP_UNIXCP, 0, path + 2, -1, p, 4 *
strlenW(path), NULL, NULL ) - 1;
     p += sprintf( p, "\nconfig -securemode\n" );
-    if (app[0] == 'Z')
-        app[0] = 'Y';
     p += sprintf( p, "%s %s\n", app, args );
     p += sprintf( p, "exit\n" );
     if (WriteFile( file, buffer, strlen(buffer), &written, NULL ) && written
== strlen(buffer))

But there is another limitation: if you have a directory name longer than 8
characters in the programs path it will fail too.
For example if I save Dos Navigator to
Y:\home\fabian\Downloads\dn\DN.COM
in the temporary dosbox config file it will look like
Y:\home\fabian\DOWN~NTG\dn\DN.COM
instead of the real DOS path
Y:\home\fabian\DOWNLO~1\dn\DN.COM
and dosbox will fail to run the program