📄 lkcustom.pas
字号:
unit lkcustom;
interface
uses
Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
Db, DBTables, StdCtrls, wwdblook, Grids, Wwdbigrd, Wwdbgrid,
wwSpeedButton, wwDBNavigator, ExtCtrls, wwclearpanel, ComCtrls, wwriched;
type
TCustomComboForm = class(TForm)
DataSource1: TDataSource;
Query1: TQuery;
DataSource2: TDataSource;
Table1: TTable;
wwDBRichEdit1: TwwDBRichEdit;
wwDBNavigator1: TwwDBNavigator;
wwDBNavigator1First: TwwNavButton;
wwDBNavigator1Prior: TwwNavButton;
wwDBNavigator1Next: TwwNavButton;
wwDBNavigator1Last: TwwNavButton;
wwDBNavigator1Insert: TwwNavButton;
wwDBNavigator1Delete: TwwNavButton;
wwDBNavigator1Edit: TwwNavButton;
wwDBNavigator1Post: TwwNavButton;
wwDBNavigator1Cancel: TwwNavButton;
wwDBLookupCombo2: TwwDBLookupCombo;
Query2: TQuery;
DataSource3: TDataSource;
wwDBLookupCombo1: TwwDBLookupCombo;
Label1: TLabel;
Label2: TLabel;
Query1ZIP: TStringField;
Query1CITY: TStringField;
Query1STATE: TStringField;
Query2ZIP: TStringField;
Query2CITY: TStringField;
Query2STATE: TStringField;
procedure wwDBLookupCombo2PerformCustomSearch(Sender: TObject;
LookupTable: TDataSet; SearchField, SearchValue: String;
PerformLookup: Boolean; var Found: Boolean);
procedure wwDBLookupCombo1PerformCustomSearch(Sender: TObject;
LookupTable: TDataSet; SearchField, SearchValue: String;
PerformLookup: Boolean; var Found: Boolean);
private
{ Private declarations }
public
{ Public declarations }
end;
var
CustomComboForm: TCustomComboForm;
implementation
{$R *.DFM}
procedure TCustomComboForm.wwDBLookupCombo2PerformCustomSearch(Sender: TObject;
LookupTable: TDataSet; SearchField, SearchValue: String;
PerformLookup: Boolean; var Found: Boolean);
const dbl = '"';
var q: TQuery;
begin
q:= TQuery(LookupTable);
q.active:= false;
SearchValue:= AnsiUppercase(SearchValue);
if PerformLookup then
begin
q.sql.clear;
q.sql.add('Select * from ip4zip');
q.sql.add('where zip=' + Dbl + SearchValue + Dbl);
end
else begin
q.sql.clear;
q.sql.add('Select * from ip4zip');
q.sql.add('where upper(ip4zip."city") like ' + Dbl + SearchValue + '%' + Dbl);
// q.ParamByName('City').asString:= SearchValue + '%';
end;
q.active:= true;
found:= not q.eof;
end;
procedure TCustomComboForm.wwDBLookupCombo1PerformCustomSearch(Sender: TObject;
LookupTable: TDataSet; SearchField, SearchValue: String;
PerformLookup: Boolean; var Found: Boolean);
const dbl = '"';
var q: TQuery;
begin
q:= TQuery(LookupTable);
q.active:= false;
SearchValue:= AnsiUppercase(SearchValue);
if PerformLookup then
begin
q.sql.clear;
q.sql.add('Select * from ip4zip');
q.sql.add('where ip4zip."zip" = ' + Dbl + SearchValue + Dbl);
end
else begin
q.sql.clear;
q.sql.add('Select * from ip4zip');
q.sql.add('where ip4zip."zip" like ' + Dbl + SearchValue + '%' + Dbl);
end;
q.active:= true;
found:= not q.eof;
end;
end.
⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -