eva/3 Application Builder • Developing eva/3 Applications • Working with Forms • Table Beans • TComboBox 

TComboBox Properties

Database
OptimizeForLargeLists If this property is activated, the list data wil be not longer be loaded during the initialisation process. The data will be loaded while displaying them.
BoundColumnName Defiens e.g. the primary key column. The selected value later will be set e.g. to the foreign key column.
IconColumnName Can reference a table column with image data
ListTableSource Defines the data source to fill the list of the TComboBox from
ShowClosedColumnName Defines wich column of the table will be shown when the TComboBox is closed
ShowColumnName Defines the table column, which keeps e.g. the description. The descriptions will be shown in the selection list of the TComboBox
Event
ActionPerformedMacro See common properties
ActionPerformedMacroParameters See common properties
FocusGainedMacro See common properties
FocusGainedMacroParameters See common properties
FocusLostMacro See common properties
FocusLostMacroParameters See common properties
InputVerifier See common properties
ItemStateChangedMacro See common properties
ItemStateChangedMacroParameters See common properties
MouseClickedMacro See common properties
MouseClickedMacroParameters See common properties
MouseDoubleClickedMacro See common properties
MouseDoubleClickedMacroParameters See common properties
MouseDraggedMacro See common properties
MouseDraggedMacroParameters See common properties
MouseEnteredMacro See common properties
MouseEnteredMacroParameters See common properties
MouseExitedMacro See common properties
MouseExitedMacroParameters See common properties
MouseMovedMacro See common properties
MouseMovedMacroParameters See common properties
MousePressedMacro See common properties
MousePressedMacroParameters See common properties
MouseReleasedMacro See common properties
MouseReleasedMacroParameters See common properties
Main
ArrowButtonBorderEffect Defines the border of the arrow button of the TComboBox. The border settings can be used in all combinations
ListEntriesOnly If the property ListEntriesOnly is set to the (defualt) value true, the TComboBox allow only entries from it's list as value to be entered. Otherwise, also non list entries can be entered if the property Editable is also set to true.
AutoCompletion Has this property the value true, key entries ar completed automatically. As completion list, the values of the column are used, that are set by the property ShowColumnName. The property AutoCompletion can only be used, when he property Editable has also the value true. The property ShowClosedColumnName should have the same value as the property ShowColumnName;, because the unique selection by key entries can not be guaranteed
BorderEffect See common properties
DefaultValue See common properties
DeleteKeyActive Defines, whether null values are allowed in the TComboBox
Editable See common properties
Enabled See common properties
Focusable See common properties
Font See common properties
LightWeightPopupEnabled Defines whether a lightweight component or a heavyweight component, like a JPanel or a JWindow contains theTComboBox
MaxItemCount Defines the maximum numbers of list entries. Has the list more entries than the maximal defined number, the list will be shorted adequately
MaximumRowCount Defines the maximal count of list entries that will be shown when the TComboBox opens
NullValueText A value that will be displayed in the TComboBox instead of null values
Opaque See common properties
PopupMenu See common properties
PopupWidth Defines the width of the TComboBox list, that will be displayed when theTComboBox arrow button will be pressed
RequestFocusEnabled See common properties
ShowParentPopupMenu See common properties
ToolTipText See common properties
Visible See common properties
Orientation
HorizontalAlignment See common properties
ListItemMargin See common properties
ClosedListItemMargin See common properties
View
Background See common properties
Foreground See common properties
SelectionBackground See common properties
SelectionForeground See common properties

TComboBox TComboBox