Null terminated strings...

[Steve Barnett]

I need to call a Win32 function that returns a set of string values. Each
value is terminated by a null and the last value is terminated by two nulls.
How do I code for this in C#?

The call is:
[DllImport("Kernel32.dll")]
internal static extern uint QueryDosDevice(string lpDeviceName,
string lpTargetPath,uint ucchMax);

According to the help, if lpDeviceName is NULL, the function retrieves a
list of all existing MS-DOS device names. Each null-terminated string stored
into the buffer is the name of an existing MS-DOS device.

Do I need to retrieve the buffer as a char array and process it myself? Can
I retrieve it as a string and use Split to split it in to an array?

Thanks
Steve

 

[Michael Bray]

I need to call a Win32 function that returns a set of string values.
Each value is terminated by a null and the last value is terminated by
two nulls. How do I code for this in C#?

PInvoke.net has some sample code that might help...

http://www.pinvoke.net/default.aspx/kernel32.QueryDosDevice

(use IE, not FireFox).

-mdb

 

[Steve Barnett]

Thanks, that'll do nicely.
Steve

PInvoke.net has some sample code that might help...

http://www.pinvoke.net/default.aspx/kernel32.QueryDosDevice

(use IE, not FireFox).

-mdb