Error C3867: function call missing argument list - visual-studio-2010

Question

I'm trying to compile a code in Visual Studio, but I keep getting the following error:
Error 4 error C3867: 'MindSet::Form1::handleDataValueFunc': function call missing argument list; use '&MindSet::Form1::handleDataValueFunc' to create a pointer to member c:\documents and settings\licap\desktop\mindset\mindset\mindset\Form1.h 122 1 MindSet
This is my code
#pragma endregion
void handleDataValueFunc(unsigned char extendedCodeLevel, unsigned char code,
unsigned char valueLength, const unsigned char *value, void *customData)
{
FILE *arq1;
FILE *arq2;
FILE *arq3;
arq1 = fopen("raw.txt","a");
arq2 = fopen("atencao.txt","a");
arq3 = fopen("meditacao.txt","a");
if (extendedCodeLevel == 0 && code == RAW_WAVE_CODE)
{
short rawValue = ((value[0] << 8) & 0xff00) | (0x00ff & value[1]);
printf("%d\n", rawValue);
fprintf(arq1,"%d\n",rawValue);
}
if (extendedCodeLevel == 0 && code == ATTENTION_LEVEL_CODE)
{
short attentionValue = (value[0] & 0xFF);
printf("%d\n", attentionValue);
fprintf(arq2,"%d\n",attentionValue);
}
if (extendedCodeLevel == 0 && code == MEDITATION_LEVEL_CODE)
{
short meditationValue = (value[0] & 0xFF);
printf("%d\n", meditationValue);
fprintf(arq3,"%d\n",meditationValue);
}
fclose(arq1);
fclose(arq2);
fclose(arq3);
}
private: System::Void IniciarCaptura_Click(System::Object^ sender, System::EventArgs^ e) {
SerialPort* port = new SerialPortW32();
if (port->open())
{
/* Initialize ThinkGear stream parser */
ThinkGearStreamParser parser;
THINKGEAR_initParser(&parser, PARSER_TYPE_PACKETS, handleDataValueFunc, NULL);
unsigned char byteRead;
for (int i = 0; i < 100000; i++)
{
if (port->read(&byteRead, 1) == 1)
{
THINKGEAR_parseByte(&parser, byteRead);
fflush(stdout);
}
else
{
//cerr << "Erro na leitura da porta" << endl;
break;
}
}
port->close();
}
else
{
//cout << port->getErrorMessage() << endl;
}
delete port;
//return 0;
}
};
}
I've already tried to add a "&" before "handleDataValueFunc", but it only returns another error message. Can anybody help?

Answer 1

You will have to use gcroot See http://msdn.microsoft.com/en-us/library/481fa11f.aspx
struct nativeMindSetFormHandle
{
nativeMindSetFormHandle(MindSet::Form1 ^ h) : handle(h) {}
gcroot<MindSet::Form1 ^> handle;
};
static void handleDataValueFuncProxy(unsigned char extendedCodeLevel,
unsigned char code, unsigned char valueLength, const unsigned char *value,
void *customData)
{
static_cast<nativeMindSetFormHandle *>(customData)->handle->handleDataValueFunc(extendedCodeLevel, code, valueLength, value, NULL);
}
And update IniciarCaptura_Click to include:
nativeMindSetFromHandle * nativeHandle = new nativeMindSetFormHandle(this);
THINKGEAR_initParser(&parser, PARSER_TYPE_PACKETS, handleDataValueFuncProxy, nativeHandle);
And don't forget to delete nativeHandle when you are done.