TSizeConstraints
Description
Specifies the size constraints for the control. Use Constraints to specify the minimum and maximum width and height of the control. When Constraints contains maximum or minimum values, the component cannot be resized to violate those constraints.
Example
Form1.Constraints.MaxWidth := 800;
Form1.Constraints.MaxHeight := 600;
Form1.Constraints.MinWidth := 200;
Form1.Constraints.MinHeight := 150;