How are Win32 types represented in C # P / Invoke?

Question

I am trying to call the PrintDlgW Win32 API from C # through P / Invoke. With P / Invoke Interop Assistant 1.0 from Microsoft, I can declare the necessary data structures and import functions from the DLL. But how to use HDC or HWND in C #? Thanks in advance.

Answer 1

This site has nice examples with structures already defined for quite a few APIs. The structure is here .

Answer 2

HWND in C ++ is indeed void *, which is presented in C # as IntPtr.

Answer 3

It can make it easier.

  using HWND = System.IntPtr;

Then use HWND in your pInvoke ... to make it easier to read and keep it “the same” as the pin code signature.

Hope this helps, Regards, Tom.