Return value from Call-ed functions

I have a problem reading the return code of DLL functions that returns a "long" (or DWORD).
I have tried all the possible type-specifiers (n,N,l,L,u,U) without success.
Using "n" the result is ever 0, otherwise is 4290772992!

What is the right type-specifier?

You can try this behaviour using this script (the return code should be the number of written characters):

//DWORD GetCurrentDirectory(
// DWORD nBufferLength,
// LPTSTR lpBuffer
//);

Dim buffer, string
Dim result, number

Space 128, buffer
Call "kernel32.dll", "GetCurrentDirectory", "nSn", True, 128, buffer, result

ConcatEx "result=", result, ", buffer=", buffer, buffer
MessageBox buffer

I tried your code and I got 2200 as a return code which is probably wrong but the buffer value was populated correctly with the name of the current directory.

: I have a problem reading the return code of DLL functions that returns a
: "long" (or DWORD).
: I have tried all the possible type-specifiers (n,N,l,L,u,U) without success.
: Using "n" the result is ever 0, otherwise is 4290772992!

: What is the right type-specifier?

: You can try this behaviour using this script (the return code should be the
: number of written characters): //DWORD GetCurrentDirectory(
: // DWORD nBufferLength,
: // LPTSTR lpBuffer
: //);

: Dim buffer, string
: Dim result, number

: Space 128, buffer
: Call "kernel32.dll", "GetCurrentDirectory",
: "nSn", True, 128, buffer, result

: ConcatEx "result=", result, ", buffer=", buffer, buffer
: MessageBox buffer

: I tried your code and I got 2200 as a return code which is probably wrong but
: the buffer value was populated correctly with the name of the current
: directory.

Is there a way to obtain the right value from functions that return a long?
By the way the right format specifier for the return code should be "l" and not "n" ...

Thank you for your help.

I don't know why a wrong value is returned in this case. I will contact developers to find out how this should be handled.

: Is there a way to obtain the right value from functions that return a long?
: By the way the right format specifier for the return code should be
: "l" and not "n" ...

: Thank you for your help.