这个问题真的很难吗?

Question

 如何将DBcheckbox嵌入到DBgrid中去,并且与数据库中的某一逻辑型字段对应关联起来?   我的要求是如果数据库表的逻辑型字段记录为true 那末在Dbgrid中的Dbcheckbox 就为打勾状态,并且改变Dbcheckbox 的状态就直接改变了数据库表的逻辑字段

Answer 1

我用一个100000万好的控件，有源代码，
VirtualTree

Answer 2

OnGetData....unit Unit1;interfaceuses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls, DBCtrls, DB, DBTables, Grids, DBGrids;type
  TForm1 = class(TForm)
    DataSource1: TDataSource;
    DBGrid1: TDBGrid;
    Table1: TTable;
    DBComboBox1: TDBComboBox;
    procedure DBGrid1DrawDataCell(Sender: TObject; const Rect: TRect;
      Field: TField; State: TGridDrawState);
    procedure DBGrid1ColExit(Sender: TObject);
    procedure DBGrid1KeyPress(Sender: TObject; var Key: Char);
    procedure DBGrid1DrawColumnCell(Sender: TObject; const Rect: TRect;
      DataCol: Integer; Column: TColumn; State: TGridDrawState);
  private
    { Private declarations }
  public
    { Public declarations }
  end;var
  Form1: TForm1;implementation{$R *.dfm}procedure TForm1.DBGrid1DrawDataCell(Sender: TObject; const Rect: TRect;
  Field: TField; State: TGridDrawState);
begin
if (gdFocused in State) then
   begin
    if ( Field.FieldName = DBComboBox1.DataField ) then
    begin
      DBComboBox1.Left := Rect.Left + DBGrid1.Left;
      DBComboBox1.Top := Rect.Top + DBGrid1.top;
      DBComboBox1.Width := Rect.Right - Rect.Left;
      DBComboBox1.Height := Rect.Bottom - Rect.Top;
      DBComboBox1.Visible := True;
    end;
  end;
end;procedure TForm1.DBGrid1ColExit(Sender: TObject);
begin
  If DBGrid1.SelectedField.FieldName = DBComboBox1.DataField then
  begin
    DBComboBox1.Visible := false;
  end;           
end;procedure TForm1.DBGrid1KeyPress(Sender: TObject; var Key: Char);
begin
  if (key <> chr(9)) then
  begin
    if (DBGrid1.SelectedField.FieldName=DBComboBox1.DataField) then
    begin
      DBComboBox1.SetFocus;
      SendMessage(DBComboBox1.Handle, WM_Char, word(Key), 0);
    end;
  end;
end;procedure TForm1.DBGrid1DrawColumnCell(Sender: TObject; const Rect: TRect;
  DataCol: Integer; Column: TColumn; State: TGridDrawState);
begin
  if Table1.FieldByName('SIZE').AsInteger = 2 then
  begin
    DBGrid1.Canvas.Font.Color:=clred;
    DBGrid1.Canvas.Brush.color:=clyellow;
  end else
  begin
    DBGrid1.Canvas.Font.Color:=clblue;
    DBGrid1.Canvas.Brush.color:=clBtnFace;
  end;
  DBGrid1.DefaultDrawColumnCell(rect,datacol,column,state);
end;end.
你换一下控件，而且在GetData里判断，给它进行Checked给值