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QUESTION:
Windows grid controls support showing an arrow to indicate the sort direction. Is this possible in Visual DataFlex?
ANSWER:
The attached workspace is a VDF 11.1 workspace that shows you how to add this functionality to a grid.
The subclass cHeaderControlGrid handles the painting and remembers the sort order. All you have to do is to augment Header_Mouse_Click. The example view GridHeaderControl.vw also shows how to quickly sort a grid.
The same techniques also work in Visual DataFlex 12.0. It is even possible to use it unchanged with a DbGrid instead of Grid as parent class, although you do need to configure the Data Dictionaries correctly to avoid functional conflicts with selection lists etc.
Contributed By:
Igor van Houttum
Company: Data Access Europe
email: igor.van.houttum@dataaccess.eu
Web Site: http://www.dataaccess.eu
Web Links Related to this Article
File HeaderControlGrid.zip
URL=http://www.dataaccess.com/KBasePublic/Files/2333.HeaderControlGrid.zip
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