Unable to pass string parameters to Clarion Dll from C#

[CarlBarnes]

@Rick_UpperPark

Search these out and review the topics.
Search results for '.net' - ClarionHub

“.Net” works but is a bit small. Searching for “MarshalAs” or “DllImport” finds these results:

Calling Clarion procedures from C#

Clarion Prototypes aStrToStr FUNCTION(BSTRING pInput), BSTRING, PASCAL, NAME('aStrToStr') Multiply FUNCTION(BYTE A, BYTE B), BYTE, PASCAL, NAME('Multiply') Msg PROCEDURE(), PASCAL, NAME('Msg') C# Prototypes: [DllImport("bobavi.dll", ExactSpelling = true)] [return: MarshalAs(UnmanagedType.BStr)] public static extern string aStrToStr ([MarshalAs(UnmanagedType.BStr)] string pInput); [DllImport("bobavi.dll", ExactSpelling = true)] public static extern byte Multiply(byte A, byte B); [DllI…

Using Groups with .Net Com Controls Part 1

I have been working with .Net for a client to create a COM control to be used in his clarion product over the last 3 years. For the most part it has been very successful and I have even shared some of my findings with Clarion Live One of the things that I thought was impossible to achieve based on other articles I had read was that it is not possible with a standard OLE control to be able to pass a clarion group to the control, until last week I still held this belief. However after a convers…