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TOPIC: how import dll functions with ref intern

how import dll functions with ref intern 1 year 1 week ago #1

  • SHirsch
  • SHirsch's Avatar Topic Author
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Hi all,

how can I import dll function with REF as parameter?
_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

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Last edit: by SHirsch.

how import dll functions with ref intern 1 year 1 week ago #2

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
XSharp Development Team
chris(at)xsharp.eu

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how import dll functions with ref intern 1 year 1 day ago #3

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

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how import dll functions with ref intern 1 year 1 day ago #4

Problem solved: PTR -> IntPTR

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

Guy

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how import dll functions with ref intern 1 year 23 hours ago #5

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
XSharp Development Team
chris(at)xsharp.eu

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