列
解决：
<aColumn>.GroupIndex := -1;
<aColumn>.Visible := True;
****************************************************************************
39 生存改削到数据库
解决：
procedure <aForm>.FormClose(Sender: TObject; var Action: TCloseAction);
begin
if (<aGrid>.FocusedView <> nil)
and (<aGrid>.FocusedView.DataController.EditState <> []) then
<aGrid>.FocusedView.DataController.Post;
end;
****************************************************************************
40 设置内置右键菜单
解决：
内置右键菜单包孕二个菜单:cxGridStdHeaderMenu, TcxGridStdFooterMenu
[delphi]
uses cxGridStdPopupMenu; procedure TForm1.cxGridPopupMenu1Popup(ASenderMenu: TComponent; AHitTest: TcxCustomGridHitTest; X, Y: Integer; var AllowPopup: Boolean); begin if ASenderMenu is TcxGridStdHeaderMenu then TcxGridStdHeaderMenu(ASenderMenu).OnPopup := StdHeaderMenuPopup; end; procedure TForm1.StdHeaderMenuPopup(Sender: TObject); var I: Integer; begin with TcxGridStdHeaderMenu(Sender).Items do for I := 0 to Count - 1 do if Items[I].Caption = ‘Group By Box‘ then begin Items[I].Enabled := False; System.Break; end end;
****************************************************************************
41 得到选中记录的值
解决：
[delphi]
1) View.DataController.DataModeController.GridMode = False时 RecIdx := View.Controller.SelectedRecords[i].RecordIndex; ColIdx := View.DataController.GetItemByFieldName(AFieldName).Index; OutputVal := View.DataController.Values[RecIdx, ColIdx]; //RecID := View.DataController.GetRecordId(RecIdx); //OutputVal := ADataSet.Lookup(View.DataController.KeyFieldNames, RecID, AFieldName); 2) View.DataController.DataModeController.GridMode = True时 Bkm := View.DataController.GetSelectedBookmark(ASelectedRecordIndex); if ADataSet.BookmarkValid(TBookmark(Bkm)) then begin ADataSet.Bookmark := TBookmark(Bkm); OutputVal := ADataSet.FieldByName(AFieldName).Value; end; View.BeginUpdate; View.DataController.BeginLocate; try // make changes here… finally View.DataController.EndLocate; View.EndUpdate; end; **********************************************
******************************42 在GridMode禁用内置的右键Footer菜单
解决：
uses cxGridStdPopupMenu;
procedure cxGridPopupMenuOnPopup(...)
begin
if (ASenderMenu is TcxGridStdFooterMenu) and
<GridView>.DataController.DataModeController.GridMode then
AllowPopup := False;
end;
****************************************************************************
43 主从表任何时候只能展开一个组
解决：
[delphi]
procedure TForm1.ADetailDataControllerCollapsin( ADataController: TcxCustomDataController; ARecordIndex: Integer; var AAllow: Boolean); var I: Integer; C: Integer; begin AAllow := False; C := 0; for I := 0 to ADataController.RecordCount - 1 do begin if ADataController.GetDetailExpanding(I) then Inc(C); if C > 1 then AAllow := True; end; end; procedure TForm1.ADetailDataControllerExpanding( ADataController: TcxCustomDataController; ARecordIndex: Integer; var AAllow: Boolean); begin ADataController.CollapseDetails; end; procedure TForm1.FormCreate(Sender: TObject); begin cxGrid1DBTableView1.DataController.OnDetailExpanding:=ADetailDataControllerExpanding; cxGrid1DBTableView1.DataController.OnDetailCollapsing:=ADetailDataControllerCollapsing; end; **************************************************************************** 44 动态创建条理(Level)和视图(View) 解决： var Grid: TcxGrid; Level: TcxGridLevel; View: TcxGridDBTableView; begin // Creates a Grid instance Grid := TcxGrid.Create(SomeOwner); Grid.Parent := SomeParent; // Creates a Level Level := Grid.Levels.Add; Level.Name := ‘SomeLevelName‘; // Creates a View View := Grid.CreateView(TcxGridDBTableView) as TcxGridDBTableView; View.Name := ‘SomeViewName‘; // … and binds it to the Level Level.GridView := View; // Hooks up the View to the data View.DataController.DataSource := SomeDataSource; // … and creates all columns View.DataController.CreateAllItems; end;
****************************************************************************
45 获得Group Footer合计行对应的记录
解决：
[delphi]