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Michele Santucci
Guest
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 Posted: Fri Oct 22, 2004 7:37 am Post subject: GIS ActiveX management |
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Hello NG,
I imported an activex control (ESRI MO 2.3) 'creating' a TMap component.
This component have a AfterTrackingLayerDraw event whose handler is defined
in this way:
AfterTrackingLayerDraw(TObject *Sender,
OLE_HANDLE hDC)
{
....
}
Since I need to draw polygons and lines over this component I asked ESRI
hints about that and they stated that it's possible using the hDC handle by
Windows API calls... which APIs are they meaning? Which functions/methods I
have to use?
Which chapter of the Borland C++ User Manual describe that?
--
Michele Santucci
===================
Celin Avio S.r.l.
Software Dev. Manager
--------------------------------------
tel. 0187564080
Via Fontevivo 21/M
19126 La Spezia
===================
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Allan Hansen
Guest
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| Posted: Thu Oct 28, 2004 6:47 am Post subject: Re: GIS ActiveX management |
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Have a look at TCanvas::Handle, assigning the hDC to it should enable you to
use TCanvas' methods for drawing.
Allan
"Michele Santucci" <michele.santucci (AT) celinavio (DOT) it> wrote
| Quote: | Hello NG,
I imported an activex control (ESRI MO 2.3) 'creating' a TMap component.
This component have a AfterTrackingLayerDraw event whose handler is
defined
in this way:
AfterTrackingLayerDraw(TObject *Sender,
OLE_HANDLE hDC)
{
....
}
Since I need to draw polygons and lines over this component I asked ESRI
hints about that and they stated that it's possible using the hDC handle
by
Windows API calls... which APIs are they meaning? Which functions/methods
I
have to use?
Which chapter of the Borland C++ User Manual describe that?
--
Michele Santucci
===================
Celin Avio S.r.l.
Software Dev. Manager
--------------------------------------
tel. 0187564080
Via Fontevivo 21/M
19126 La Spezia
===================
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| Back to top |
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