Calls to some of the Rmchart functions in Rmcdemo.prg will GPF. I've conversed with the designer, Rainer Morgen, on his forum at
www.rmchart.com, and he says all functions work fine with VB and some other platforms. Apparently, the problem is with calls involving data type DOUBLE when using the xHb DLLCALL along with FWH (but not using the FWH DLL32). (Had to use xHb's DLLCALL in order to be able to pass the kind of C structures required by some Rmchart functions.)
In the download referenced in my prior posting, there is a file included named RMCDEMO.PRG, which I converted form Morgen's VB6 demo to FWH/xHb. The conversion is incomplete regarding the use of some included C structures. But the part of this demo that should work now - but doesn't - is function mnSingleBars(). There are two dll function calls in there that cause gpf's - RMC_AddDataAxis and RMC_CalcAverage. Unfortunately, I don't have the technical capability with C and with the innere workings of xHb dll calls to figure out what is wrong here.
Is there someone else who is interested in getting full use of the free Rmchart graphics package (over 160 functions), who has the C and FWH-xHb technical ability, who would be interested in helping to solve the GPFs from accessing some of the Rmchart dll functions, for everyone's benefit?
I'd be happy to work with anyone who could help.
- Roger