Delphi data display control, also called Data aware controls are the only was for data(text) be presented on screen for the end-user (other than hardcopy preview).

 DBImage

This control lets you display graphical data stored in a graphic or BLOB field type. format supported are .BMP, .WMF or .ICO format only as of today. The value of the Picture property determines the image's format.

DBListBox and DBComboBox

Both DBListBox and DBComboBox let users select the value to enter into a field from a list of values contained in the control's Items property.  The difference is that DBListBox uses a windows list box and limits the values the user can enter to those inthe list. DBComboBox allows users to select a value from a drop-down list or type in a value that is not in the list.

DBLookupList and DBLookupCombo

These components perform the same function as DBListBox and DBComboBox but instead of getting their values from a Static list, they get their fist of possible values from a table using three(3) special properties.

Note

To make it work, you must define a lookup field at the DataSet (or ClientDataSet for a 100% Client/Server services) side first then use this user defined lookup field as a reference for both Lookup components.

Properties

LookupSource contains the name of the DataSource component that is connected to the Lookup Table

LookupDisplay is set to the field in the Lookup table that you want to display in the list

LookupField contains the name of the field in the Lookup table whose value will be put into the Data table record (in short, this is the source of transfer)

DBCheckBox

Is a good way to let users enter a value into a field that can have only two(2) values. ex. True or False, Male or Female, Yes or No.....

Properties

Caption                the text that will appears to the right of the check box itself

ValueChecked

ValueUnChecked   let you set the value that will be entered into the field for the checked or unchecked state of the control