Unit 'msedbedit'	Package
[Overview][Constants][Types][Classes][Procedures and functions][Index]	[#msegui]

tcustomlbdropdownlistcontroller

[Properties (by Name)] [Methods (by Name)]

The *lb edit widgets (e.g. tdbenumeditlb) fetch their dropdown values from a lookupbuffer

Declaration

Source position: msedbedit.pas line 2439

`type tcustomlbdropdownlistcontroller = class(texterndatadropdownlistcontroller,ilookupbufferfieldinfo)`
`public`
`property optionslb: optionslbty; [rw]`
`property cols: tlbdropdowncols; [rw]`
`property lookupbuffer: tcustomlookupbuffer; [rw]`
`property keyfieldno: lookupbufferfieldnoty; [rw]`		Index into lookupbuffer.integerfields for an enumeditlb widget, or into lookupbuffer.textfields for a keystringeditlb widget
`property onfilter: lbfiltereventty; [rw]`
`property onbeforefilter: dataediteventty; [rw]`
`end;`

Inheritance

`tcustomlbdropdownlistcontroller`		The *lb edit widgets (e.g. tdbenumeditlb) fetch their dropdown values from a lookupbuffer
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`texterndatadropdownlistcontroller,ilookupbufferfieldinfo`
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`tcustomdropdownlistcontroller`
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`tcustomdropdowncontroller,idropdownlistcontroller`
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`teventpersistent,ibutton,ievent,idropdowncontroller,idataeditcontroller`
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`tlinkedpersistent,ievent`
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`tnullinterfacedpersistent,iobjectlink`
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`tvirtualpersistent,iunknown`
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`tpersistent`
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`TObject`

Description

The *lb edit widgets (e.g. tdbenumeditlb) fetch their dropdown values from a lookupbuffer — fast, with no side effect on other components — as opposed to their non-lb tdb* counterparts, which fetch values directly from a tdataset by locate (slower, and moves the dataset's cursor).