在http://arcobjectsonline.esri.com中有个叫SimpleMapViewerApplication的例子，是用
VC 写的，再改改就好了，

void PaintDialog(HDC hDC, IMap* pMap, ITrackCancel* pTrackCancel)
{
if ( pMap == NULL )
return;

IActiveViewPtr ipActiveView(pMap);

ipActiveView->Draw((OLE_HANDLE) hDC, pTrackCancel);
pTrackCancel->Reset();
}