Class TrDBLookupComboBox
Unit
rDBComponents
Declaration
type TrDBLookupComboBox = class(TDBLookupComboBox)
Description
enhanced TDBLookupComboBox with bound label
Hierarchy
- TDBLookupComboBox
- TrDBLookupComboBox
Overview
Methods
Properties
Description
Methods
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procedure CloseUp(Accept: boolean); override; |
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procedure UpdateState(Sender: TObject); virtual; |
update current state of component (called automatically)
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function DropDownDefaultItemHeight: integer; |
return default item height of standard lookup list
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function GetSelectedText: string; |
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Properties
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property DataField: string read GetDataField write SetDataField; |
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property ReadOnlyColor: TColor read FReadOnlyColor write FReadOnlyColor default clBtnFace; |
define color for not edit state
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property DBEditLabel: TDBBoundLabel read FDBEditLabel; |
define properties of bound label
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property DefaultPrefix: string read FDefaultPrefix write SetDefaultPrefix; |
define prefix for auto-named function (name of component is set according datafield)
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property DropDownAutoWidth: boolean read FDropDownAutoWidth write FDropDownAutoWidth default true; |
defines whether width of dropdown list is set according items length
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property DropDownMaxWidth: integer read FDropDownMaxWidth write FDropDownMaxWidth default 600; |
defines maximal width of dropdown list
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property DropDownItemHeight: integer read FDropDownItemHeight write FDropDownItemHeight default 0; |
defines absolute item height of dropdown list, default is used if DropDownItemHeight =0
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property DropDownItemIncreaseHeight: integer read FDropDownItemIncreaseHeight write FDropDownItemIncreaseHeight default 2; |
defines increase of standard item height of dropdown list
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property DropDownItemIncreaseWidth: integer read FDropDownItemIncreaseWidth write FDropDownItemIncreaseWidth default 0; |
defines increase of item column width if DropDownAutoWidth=true
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property ListFieldIndexMax: integer read FListFieldIndexMax write FListFieldIndexMax default 0; |
defines max ListField index which is show in edit window (own paint method is used)
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property EmptyDisplayValue: string read FEmptyDisplayValue write FEmptyDisplayValue; |
defines text value shown if KeyValue is empty
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property OnGetListItemProps: TGetLookupListItemProps read FGetListItemProps write FGetListItemProps; |
event for user definition of lookup dropdown item properties
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property SearchingResetInterval: integer read FSearchingResetInterval write FSearchingResetInterval default 2500; |
define interval without any keypress before reset searching text
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property AllowLookupFilter: boolean read FAllowLookupFilter write FAllowLookupFilter default false; |
allow filtering of data for the lookup field
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property AutoDropDown: boolean read FAutoDropDown write FAutoDropDown default false; |
allow automatic dropdown after key press
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