I m trying to use some legacy Delphi 5 DLLs from C# (2.0/3.5). Some of the exported functions are declared as such: function SimpleExport: OleVariant; stdcall; function BiDirectionalExport(X: ...

I have a DLL that I need to P/Invoke the following method: DWORD Foo( int a, int *b, char *c ); Per the documentation, parameter c is an out parameter that must be a ...

We know that .NET framework class encapsulate the Win32 API, now I am wondering how the .NET framework class call Win32 API? Ways I know so far: Through P/Invoke VC++/CLI Both 1 and 2 Anybody ...

I cannot figure out how to marshal a C++ CBitmap to a C# Bitmap or Image class. My import looks like this: [DllImport(@"test.dll", CharSet = CharSet.Unicode)] public static extern IntPtr ...

First of all the Boolean type is said to have a default marshal type of a four-byte value. So the following code works: struct A { public bool bValue1; public int iValue2; ...

I have to use a legacy C routine in the application I am developing. The code in here works, but I have to convert almost all the fields to char arrays in order to use it. There is a better way to do ...

I have a C# application that uses the SendMessage pinvoke method to send a "close window" message (WM_CLOSE / 16) to various windows outside the application. This works great, except when the window ...

Is there a managed API for kernel32.searchpath? i.e not using a pinvoke. http://www.pinvoke.net/default.aspx/kernel32.searchpath