build custom control for report
Our database contains custom blob fields that hold CAD-drawing data in our own special format. Years ago we built a C++ ActiveX control called WTComp that can be used in Access, VB, C++, C#, etc. to displays the drawings.
We're wanting to display those drawings in Crystal Reports.
In our crystal reports viewing application made with CR for Visual Studio 2005 we currently take the data from the database, place them in a in-memory-dataset, transform the data to PNG-Picture data and connect the dataset to the report to get the drawings viewed, but that is terribly slow.
Does anyone know, if it is somehow possible to place ActiveX controls in Crystal Reports (for VS 2005 or maybe any newer version) or if there is another way to display that drawings without having to convert them prior to showing the report?