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Strategies & Market Trends : TA-Quotes Plus -- Ignore unavailable to you. Want to Upgrade?

To: Jurgen who wrote (5964)	8/13/1998 11:34:00 AM
From: Alain Joaris	Read Replies (1) \| Respond to of 11149

Jurgen, Sorry for not answering immediately, I have been busy trying to have it work. The answer is YES, you can call the QP2 DLL functions from ACCESS. I wrote a VBA module based on the C main.cpp code provided with QP2. The VB code provided with QP2 for the functions definitions needed some modifications, but is basically OK. There is still a problem to fix: VB doesn't allow optional arguments of a function to be of a user-defined type. This is a problem for the the following functions: int __stdcall R2_QP_LoadSymbol(char sym,void data,int max_rec,bool RAWDATA = false, bool IGNORE_HOLIDAYS = true, *usr_master_def pMasterRec = 0); int __stdcall R2_QP_Load_First_Symbol( ... int __stdcall R2_QP_Load_Next_Symbol( ... The equivalent VB code should be: Public Declare Function LoadSymbol Lib "qpr2vb" (ByVal Symbol$,ByRef data As DataRec, ByVal MaxRecords As Long, Optional ByVal UseRAWMode As Long = True, Optional ByVal IgnoreHolidays As Long = False, Optional ByRef MasterRec As EquityMaster**) As Long But the compiler doesn't like this ... Without the argument referring to EquityMaster browsing works fine, but you don't get all the information out of the database. I tried several possibilities but haven't found a satisfactory one yet. Does somebody have experience with this ? I'll keep you posted on this.