I created a DLL, along with the import library, that handles nothing other
than creating a chart (using TChart and related components), as well as a
couple other forms for dynamically configuring the axes and series.  All
seems to be OK except that when I link with this DLL, and try to access the
properties and methods of the instance of TChart directly, I get the
following link time errors.

[Linker Error] Unresolved external 'Series::TPointSeries::' referenced from
E:\IMPACTSPLIT\INTERMEDIATE\CONCMONITORBLOCK.OBJ
[Linker Error] Unresolved external '__fastcall
Series::TPointSeries::TPointSeries(Classes::TComponent *)' referenced from
E:\IMPACTSPLIT\INTERMEDIATE\CONCMONITORBLOCK.OBJ
[Linker Error] Unresolved external '__fastcall
{*word*249}gine::TChartSeries::AddY(const double, const System::AnsiString,
Graphics::TColor)' referenced from
E:\IMPACTSPLIT\INTERMEDIATE\CONCMONITORBLOCK.OBJ
[Linker Error] Unresolved external 'Series::TFastLineSeries::' referenced
from E:\IMPACTSPLIT\INTERMEDIATE\CONCMONITORBLOCK.OBJ
[Linker Error] Unresolved external '__fastcall
Series::TFastLineSeries::TFastLineSeries(Classes::TComponent *)' referenced
from E:\IMPACTSPLIT\INTERMEDIATE\CONCMONITORBLOCK.OBJ
[Linker Error] Unresolved external '__fastcall
{*word*249}gine::TChartSeries::SetTitle(System::AnsiString)' referenced from
E:\IMPACTSPLIT\INTERMEDIATE\CONCMONITORBLOCK.OBJ
[Linker Error] Unresolved external '__fastcall
{*word*249}gine::TCustomAxisPanel::AddSeries({*word*249}gine::TChartSeries *)' referenced
from E:\IMPACTSPLIT\INTERMEDIATE\CONCMONITORBLOCK.OBJ
[Linker Error] Unresolved external 'TgraphForm::' referenced from
E:\IMPACTSPLIT\INTERMEDIATE\CONCMONITORBLOCK.OBJ
[Linker Error] Unresolved external '__fastcall
{*word*249}gine::TChartAxisTitle::SetCaption(const System::AnsiString)' referenced
from E:\IMPACTSPLIT\INTERMEDIATE\CONCMONITORBLOCK.OBJ
[Linker Error] Unresolved external '__fastcall
Chart::TCustomChartLegend::SetVisible(bool)' referenced from
E:\IMPACTSPLIT\INTERMEDIATE\CONCMONITORBLOCK.OBJ

Clearly, just adding the import library for my DLL does not make these
function available.  But I wonder if the import library for the TChart
components is not linked here because I an running into this trouble in
another DLL that, while it has to use the charting DLL and create instances
of it (and, because it has to manipulate the data in the chart forms, was
created as a C++/VCL DLL), it does not have any forms of its own.  If so,
what is the fix?

Yes, I know I can probably solve this by creating a suite of dispatch
functions on my charting form that takes my data from my concentration
monitor block (CONCMONITORBLOCK), but there must be a better way.  Is there
an import library I have overlooked to which I can link?  Or is there a
better way to resolve this other than the things I have considered?

BTW: if I look at the packages page on the project options dialog, I see all
the usual default packages listed.

Thanks,

Ted