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how import dll functions with ref intern
Posted: Fri Mar 16, 2018 4:02 pm
by 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 'e
rror XS0214: Pointers and fixed size buffers may only be used in an unsafe context'
Background: I try to eliminate VO/Vulcan dependancies.
Regards,
Stefan
how import dll functions with ref intern
Posted: Fri Mar 16, 2018 4:58 pm
by 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
how import dll functions with ref intern
Posted: Thu Mar 22, 2018 10:40 pm
by 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
how import dll functions with ref intern
Posted: Thu Mar 22, 2018 11:01 pm
by Guy Deprez
Problem solved: PTR -> IntPTR
[DllImport("user32.dll")];
STATIC METHOD ShowWindow(hWnd AS IntPTR, nCmdShow AS INT) AS LOGIC PASCAL
Guy
how import dll functions with ref intern
Posted: Fri Mar 23, 2018 12:47 am
by 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