TcxCustomFilterControl Class

The base class for filter controls.

Declaration

TcxCustomFilterControl = class(
    TcxControl,
    IcxFormatControllerListener,
    IdxSkinSupport
)

Remarks

This class is the base class for filter controls (TcxFilterControl or TcxDBFilterControl) that allow end-users to build and apply filter criteria to their linked object:

An object that implements the IcxFilterControl interface (links to the TcxFilterControl)
A dataset (links to the TcxDBFilterControl)

The TcxCustomFilterControl class provides members that define the common functionality of filter controls. The Criteria property introduced in the TcxCustomFilterControl class represents the filter criteria specified by a filter control. The filter criteria contain a list of filter conditions. The FilterText property contains a string that describes the defined filter conditions. Filter conditions created in a filter control at runtime can be saved to and then loaded from either a specific file or stream using the SaveToFile, SaveToStream, LoadFromFile, and LoadFromStream methods.

You can specify font characteristics for different elements of a filter control by using the FontBoolOperator, FontCondition, FontItem, and FontValue properties.

Do not create instances of the TcxCustomFilterControl class. Use its descendants (TcxFilterControl or TcxDBFilterControl) instead.