how import dll functions with ref intern

[SHirsch]

Hi all,

how can I import dll function with REF as parameter?

Code: Select all

_DLL FUNC MyFunction( param1 REF WORD ) AS DWORD PASCAL:MyDll.MyFunction

In X#/VO this compiles without error message. With X#/Core I get 'error XS0214: Pointers and fixed size buffers may only be used in an unsafe context'

Background: I try to eliminate VO/Vulcan dependancies.

Regards,
Stefan

[Chris]

Hi Stefan,

This declaration should compile fine in Core, too. Are you sure the error is pointing in that declaration, or maybe it's reported in the code that calls it? Or in some other function?

Chris

[Guy Deprez]

With the code below, same error X0214 in X#/Core...

[DllImport("user32.dll")];
STATIC METHOD ShowWindow(hWnd AS PTR, nCmdShow AS INT) AS LOGIC PASCAL

Guy

[Guy Deprez]

Problem solved: PTR -> IntPTR

[DllImport("user32.dll")];
STATIC METHOD ShowWindow(hWnd AS IntPTR, nCmdShow AS INT) AS LOGIC PASCAL

Guy

[Chris]

Hi Guy,

Just to explain, this is because the "PTR" type is a VO compatibility thing and it is not available in the Core dialect, only in the vulcan, VO and similar X# dialect settings. In Core, IntPtr can be used instead of PTR, as you already found!

Chris