dotnet compact framework: Pass C# string to eVC DLL -- dotnet compact framework

You're in the

dotnet compact framework

group:

Pass C# string to eVC DLL

Re: Pass C# string to eVC DLL

Paul G. Tobey [eMVP]
1/31/2006 9:38:10 AM

dotnet compact framework: Fails how? C# strings, it should be clear, are always Unicode, not ASCII.
If you're counting on the string to consist of 8-bit characters, you're
wrong and it's probably showing you just the first character.

Paul T.

[quoted text, click to view]

Pass C# string to eVC DLL

devgrt
1/31/2006 11:27:29 AM

I have an eVC DLL that I call from C#. I want to pass a C# string to the dll
and then copy that string's data into a char buffer as shown below. It
fails. Could anyone help me fix this code to what it should be. Thank you!

eVC DLL:
int mydll(LPSTR s)
{
char data[40];
strcpy(data, s);
}

C# calling the DLL:
[DllImport("MyCProcess.dll")]
public static extern int mydll(string s);
int r = mydll("teststring");

Re: Pass C# string to eVC DLL

Chris Tacke, MVP
1/31/2006 12:18:53 PM

CE is unicode, so you shouldn't be using char, but instead either wchar_t or
the TCHAR macro, along with the right copy function.

-Chris

[quoted text, click to view]

Got something to say? Click here to post a reply to this thread.

Don't see what you're looking for? Try a search.

View other messages in the dotnet compact framework group.

View Other Months
June 2003
July 2003
August 2003
September 2003
October 2003
November 2003
December 2003
January 2004
February 2004
March 2004
April 2004
May 2004
June 2004
July 2004
August 2004
September 2004
October 2004
November 2004
December 2004
January 2005
February 2005
March 2005
April 2005
May 2005
June 2005
July 2005
August 2005
September 2005
October 2005
November 2005
December 2005
January 2006
February 2006
March 2006
April 2006
May 2006
June 2006
July 2006
August 2006
September 2006
October 2006
November 2006
December 2006
January 2007
February 2007
March 2007
April 2007
May 2007
June 2007
July 2007
August 2007
September 2007
October 2007
November 2007
December 2007
January 2008
February 2008
March 2008
April 2008
May 2008
June 2008

home · blog · groups

Questions? Comments? Contact the dn