RE: passing string array to C++

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Hi

Based on my research, all the System API on the WinCE is of Unicode
version, so it is common to handle all the string in the winCE of unicode
version.
I think it is better for you to convert your dll to handle Unicode version
string all the time.

Here is the WCHAR version P/Invoke for your reference.

[C++]
CPPDLL_API long MyAdapt( long g, WCHAR **strings, long numStrings)
{
for(int i=0;i<numStrings;i++)
{
printf("%S \n",strings[i]);
strings[i][2]='A'+i;
}
return 0;
}
extern "C" CPPDLL_API long MyAdapt( long g, WCHAR **strings, long
numStrings);


[C#]

[DllImport(@"..\..\..\CPPDLL\Debug\CPPDLL.dll",EntryPoint="MyAdapt",CharSet=
CharSet.Unicode,SetLastError=true)]
private static extern int MyAdapt(int g,[In,Out] string[] users, int
numUsers);
public static void InteropStringArray()
{
string[] strs = new string[]{"Hello","World"};
int rt = MyAdapt(2,strs,2);
foreach(string s in strs)
{
Console.WriteLine(s);
}
}
[STAThread]
static void Main(string[] args)
{
InteropStringArray();
}

Best regards,

Peter Huang
Microsoft Online Partner Support

Get Secure! - www.microsoft.com/security
This posting is provided "AS IS" with no warranties, and confers no rights.

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