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There are three TeeChart icons in the component palette.
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| TChart | TDBChart | TQRChart |
TQRChart, is a component especially tailored for use with QuSoft’s QuickReport - See the chapter Adding a Chart to QuickReport.TQRChart is descendant of TDBChart.
The 2 components, TChart and TDBChart are the basic building blocks of all TeeChart Charts.
If you wish to create the data Series for your Chart manually, or via a coded procedure then use the TChart component. If you wish to source your graph data from a table or SQL query then use the TDBChart component. You may, of course, use TDBChart in all cases but it will result in a larger compiled size of your code which would be inefficient if you are not using a datasource (explanation follows).
Once an initial data Series is defined, both Chart components, TChart and TDBChart support the use of another data Series as a data source.
- So why two kinds of Chart components?
- couldn’t we achieve this functionality via just one component?
Answer:
Projects compiled with using only TChart components, don't need the Borland database unit (db.pas).
Internally, both derive from the TCustomChart component, which is responsible for most Charting capabilities.
