Hello All!
I write dll with Delphi to work with some Mapbasic application. When i
call this dll rom mb application I want to "connect" with the same
instance of Mapinfo that calls my dll. There is
SystemInfo(SYS_INFO_APPDISPATCH) function in MapBasic, but i can't
understand how to work with this function results.
May be problem is in speciality of building dll, or in my unability to
convert integer value to variant or interface variable to start working
with Mapinfo.
Dll has, for example, 2 procedures:
procedure ConnectToMI(Ipointer: integer); stdcall; export;
begin
// MI - global dll variant variable to communicate with Mapinfo
MI:= IDispatch(Pointer(Ipointer))
end;
function TestConnect : integer; stdcall; export;
begin
// test function returning number of opened tables
try
Result:= MI.Eval('NumTables()')
except
Result:= -1;
end;
end;
-- MapBasic usage of dll procedures
First:
call ConnectToMI(SystemInfo(SYS_INFO_APPDISPATCH))
Second:
Note "Number of opened tables: " + TestConnect()
Hope to "Mapinfo community" help.
With best regards,
Yuriy Fedorinov
Russia, St.Petersburg
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