TwwDBGrid + TwwDBLookupCombo 下拉列表

目标标求：点击TwwDBGrid中的sPartCode字段弹出下拉列表

平台：DELPHI 10.3 +INFO POWER 4K 20.0+ WIN7 64

大致步骤：

wwDBLookupCombo1，{位置任意}
wwDBGrid1

object Form1: TForm1
Left = 0
Top = 0
Caption = 'Form1'
ClientHeight = 418
ClientWidth = 554
Color = clBtnFace
Font.Charset = DEFAULT_CHARSET
Font.Color = clWindowText
Font.Height = -11
Font.Name = 'Tahoma'
Font.Style = []
OldCreateOrder = False
PixelsPerInch = 96
TextHeight = 13
object wwDBLookupCombo1: TwwDBLookupCombo {查找表，就是下拉列表中可以看到的内容}
Left = 96
Top = 64
Width = 121
Height = 21
DropDownAlignment = taLeftJustify
Selected.Strings = (
'fCode'#9'15'#9'fCode'#9'F'#9
'fName'#9'24'#9'fName'#9'F'
'fColor'#9'10'#9'fColor'#9'F'#9
'fSpec'#9'10'#9'fSpec'#9'F'#9
'fUnitsName'#9'10'#9'fUnitsName'#9#9)
DataField = 'fPartID'
DataSource = dsBOM
LookupTable = TproductTable
LookupField = 'fID'
Options = [loColLines, loRowLines, loTitles]
TabOrder = 0
AutoDropDown = False
ShowButton = True
PreciseEditRegion = False
AllowClearKey = False
end

object wwDBGrid1: TwwDBGrid
Left = 0
Top = 216
Width = 554
Height = 202
  ControlType.Strings = (
  'sPartCode;CustomEdit;wwDBLookupCombo1;F')
  Selected.Strings = (
'sPartCode'#9'20'#9'sPartCode'
'fPartID'#9'10'#9'fPartID'
'fUnit'#9'50'#9'fUnit'
'fQty'#9'10'#9'fQty'
'fBeginTime'#9'34'#9'fBeginTime'
'fEndTime'#9'34'#9'fEndTime'
'fNotes'#9'200'#9'fNotes')
IniAttributes.Delimiter = ';;'
IniAttributes.UnicodeIniFile = False
TitleColor = clBtnFace
FixedCols = 0
ShowHorzScrollBar = True
Align = alBottom
  DataSource = dsBOM
TabOrder = 1
TitleAlignment = taLeftJustify
TitleFont.Charset = DEFAULT_CHARSET
TitleFont.Color = clWindowText
TitleFont.Height = -11
TitleFont.Name = 'Tahoma'
TitleFont.Style = []
TitleLines = 1
TitleButtons = False
end
object ClothuConnection: TFDConnection
Params.Strings = (
'ConnectionDef=ClothU')
Connected = True
LoginPrompt = False
Left = 435
Top = 54
end

object TbomTable: TFDQuery
Active = True
Connection = ClothuConnection
SQL.Strings = (
'SELECT [fParentID]'
' ,[fPartID]'
' ,[fUnit]'
' ,[fQty]'
' ,[fBeginTime]'
' ,[fEndTime]'
' ,[fNotes]'
' FROM [ClothU].[base].[tBom]')
Left = 331
Top = 86
object TbomTablesPartCode: TStringField
DisplayWidth = 20
FieldKind = fkLookup
FieldName = 'sPartCode' {计算字段}
LookupDataSet = TproductTable
LookupKeyFields = 'fID'
LookupResultField = 'fCode'
KeyFields = 'fPartID'
Lookup = True
end

object TbomTablefPartID: TIntegerField
DisplayWidth = 10
FieldName = 'fPartID'
Origin = 'fPartID'
ProviderFlags = [pfInUpdate, pfInWhere, pfInKey]
Required = True
end
object TbomTablefUnit: TWideStringField
DisplayWidth = 50
FieldName = 'fUnit'
Origin = 'fUnit'
Size = 50
end
object TbomTablefQty: TCurrencyField
DisplayWidth = 10
FieldName = 'fQty'
Origin = 'fQty'
Required = True
end
object TbomTablefBeginTime: TSQLTimeStampField
DisplayWidth = 34
FieldName = 'fBeginTime'
Origin = 'fBeginTime'
end
object TbomTablefEndTime: TSQLTimeStampField
DisplayWidth = 34
FieldName = 'fEndTime'
Origin = 'fEndTime'
end
object TbomTablefNotes: TWideStringField
DisplayWidth = 200
FieldName = 'fNotes'
Origin = 'fNotes'
Size = 200
end
object TbomTablefParentID: TIntegerField
DisplayWidth = 10
FieldName = 'fParentID'
Origin = 'fParentID'
ProviderFlags = [pfInUpdate, pfInWhere, pfInKey]
Required = True
Visible = False
end
end
object TproductTable: TFDQuery {查找表}
Active = True
Connection = ClothuConnection
SQL.Strings = (

'Select fID,fCode,fName,fColor,fSpec,fUnitsName from base.vProduc' +
't')
Left = 436
Top = 138
end
object dsBOM: TDataSource
DataSet = TbomTable
Left = 336
Top = 152
end
end