Code:

ExtFml( "MSXDll.MakeMyPosition" )

Code:

BOOL __stdcall MakeMyPosition(const MSXDataRec *a_psDataRec,
const MSXDataInforRecArgsArray *a_psDataInfoArgs,
const MSXNumericArgsArray *a_psNumericArgs,
const MSXStringArgsArray *a_psCustomArgs,
const MSXCustomArgsArray *a_psCustomArgs,
MSXResultRec *a_psResultRec)
{
// First, we're going to play a sound, not return any results, so zero
// out a_psResultRec via the iFirstValid and iLastValid fields in a_psResultRec.
a_psResultRec->psResultArray->iFirstValid = 0;
a_psResultRec->psResultArray->iLastValid = -1;

// Second, get the open and close value from the last bar in the input data.
// (You'll want to do some error checking here, like making sure that there is
// actually any data in the record, and making sure that the open and close
// data both end on the same record. For the sake of brevity and clarity, I
// haven't included that kind of error checking for this example.)
float open = a_psDataRec->sOpen.pfValue[a_psDataRec->sOpen.iLastValid];
float close = a_psDataRec->sClose.pfValue[a_psDataRec->sClose.iLastValid];

// Third, compare the open and close and play the appropriate file.
// (Note that there are three possibilities here. Open could be greater than
// close, open could be less than close, or open could be equal to close. You
// didn't say anything about doing something if they are equal, so here I test
// for the greater than and less than conditions, and do nothing for the equal
// condition.)
if(open > close)
{
// Insert your code to play Sell.wav here!
}
else if(open < close)
{
// Insert your code to play Buy.wav here!
}

// We're done, return
return MSX_SUCCESS;
}

roymadhavi:

Hi,
This is what I need. I want to call my dll function whenever MS chart shows buy/sell. That is, if the MS shows buy, then for that tick, I want to call my external function with the buy signal and same for sell.

This should remain same for whatever MS formulae is used in the experts advisor. In general i want to pass on the sell/buy tick to the dll function whenevr they occur.

Hope now the question is much more clearer.

Thanks
Madhavi Roy

Ok then from the data passed to the external function, how can i figure out that buy signal is sent...Probably i will need to check the condition in the function itself...Am I right??

Code:

ExtFml( "MSXDll.MakeMyPosition", C>O )

Code:

ExtFml( "MSXDll.MakeMyPosition" )

Code:

BOOL __stdcall MSXNthFunction(int a_iNthFunc, MSXFuncDef* a_psFuncDef)
{
BOOL l_bRtrn = MSX_SUCCESS;

switch(a_iNthFunc)
{
case 0:
strcpy(a_psFuncDef->szFunctionName, "MakeMyPosition");
strcpy(a_psFuncDef->szFunctionDescription, "MakeMyPosition Description");
a_psFuncDef->iNArguments = 0;
break;
default:
l_bRtrn = MSX_ERROR;
break;
}

return l_bRtrn;
}

Code:

BOOL __stdcall MSXNthArg(int a_iNthFunc, int a_iNthArg, MSXFuncArgDef *a_psFuncArgDef)
{
// There are no args, this shouldn't be called
return MSX_ERROR;
}

Code:

BOOL __stdcall MakeMyPosition(const MSXDataRec *a_psDataRec,
const MSXDataInforRecArgsArray *a_psDataInfoArgs,
const MSXNumericArgsArray *a_psNumericArgs,
const MSXStringArgsArray *a_psCustomArgs,
const MSXCustomArgsArray *a_psCustomArgs,
MSXResultRec *a_psResultRec)
{
// First, we're going to play a sound, not return any results, so zero
// out a_psResultRec via the iFirstValid and iLastValid fields in a_psResultRec.
a_psResultRec->psResultArray->iFirstValid = 0;
a_psResultRec->psResultArray->iLastValid = -1;

// Second, get the open and close value from the last bar in the input data.
// (You'll want to do some error checking here, like making sure that there is
// actually any data in the record, and making sure that the open and close
// data both end on the same record. For the sake of brevity and clarity, I
// haven't included that kind of error checking for this example.)
float open = a_psDataRec->sOpen.pfValue[a_psDataRec->sOpen.iLastValid];
float close = a_psDataRec->sClose.pfValue[a_psDataRec->sClose.iLastValid];

// Third, compare the open and close and play the appropriate file.
// (Note that there are three possibilities here. Open could be greater than
// close, open could be less than close, or open could be equal to close. You
// didn't say anything about doing something if they are equal, so here I test
// for the greater than and less than conditions, and do nothing for the equal
// condition.)
if(open > close)
{
// Insert your code to play Sell.wav here!
}
else if(open < close)
{
// Insert your code to play Buy.wav here!
}

// We're done, return
return MSX_SUCCESS;
}

Patrick:

MetaStock sends a message every time the alert conditions is tested and found to be true. Normally, the alerts are tested for each tick that comes in. You can change it to be tested only after a bar is completed by changing the following option: TOOLS | OPTIONS, under the real-time tab, uncheck the ‘Recalcualate Expert Live’ option.

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