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RAD Studio VCL Reference
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TFloatField Class
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RAD Studio VCL Reference
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TFloatField represents a field that contains floating-point values in a dataset.
TFloatField = class(TNumericField);
class TFloatField : public TNumericField;
DB
TFloatField encapsulates the fundamental behavior common to numeric data. Floating-point fields can hold values in the range from (positive or negative) 5.0 * 10^-324 to 1.7 * 10^308 with an accuracy of 15 digits. TFloatField introduces new properties to convert between integer values and other data types, to control the precision of numbers that the field will permit, and to format the value for display purposes.
If you use the Fields editor at design time to create a persistent field component for the float field, you can access it by name at runtime. When using dynamic field components, you can access the TFloatField instance using the dataset's Fields property or FieldByName method.
Setting Display and Edit Properties at Design Time
Using Default Formatting for Numeric
Working with Field Components: Overview
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Class Hierarchy