procedure TForm1.DBGrid1DrawColumnCell(Sender: TObject;
const Rect: TRect; DataCol: Integer;
Column: TColumn; State: TGridDrawState);
const
// 这个整数值将按照布尔值返回,并送入数组
CtrlState : array[Boolean] of Integer = (DFCS_BUTTONCHECK,
DFCS_BUTTONCHECK or DFCS_CHECKED);
begin
//确保只有在逻辑字段才能插入组件
if Column.Field.DataType = ftBoolean then
begin
DBGrid1.Canvas.FillRect(Rect);
DrawFrameControl(DBGrid1.Canvas.Handle,
Rect,
DFC_BUTTON,
CtrlState[Column.Field.AsBoolean]);
end;
end;
procedure TForm1.DBGrid1ColEnter(Sender: TObject);
begin
// 确保该栏是逻辑字段
if DBGrid1.SelectedField.DataType = ftBoolean then
begin
OriginalOptions := DBGrid1.Options;
DBGrid1.Options := DBGrid1.Options - [dgEditing];
end;
end;
procedure TForm1.DBGrid1ColExit(Sender: TObject);
begin
//确保该栏是逻辑字段
if DBGrid1.SelectedField.DataType = ftBoolean then
DBGrid1.Options := OriginalOptions;
end;
procedure TForm1.DBGrid1CellClick(Column: TColumn);
begin
//确保该栏是逻辑字段
if DBGrid1.SelectedField.DataType = ftBoolean then
SaveBoolean();
end;
procedure TForm1.DBGrid1KeyDown(Sender: TObject;
var Key: Word; Shift: TShiftState);
begin
//确保该栏是逻辑字段和空格键在键盘中被点击
if ( Key = VK_SPACE ) and
( DBGrid1.SelectedField.DataType = ftBoolean ) then
SaveBoolean();
end;
procedure TForm1.SaveBoolean;
begin
DBGrid1.SelectedField.Dataset.Edit;
DBGrid1.SelectedField.AsBoolean :=
not DBGrid1.SelectedField.AsBoolean;
DBGrid1.SelectedField.Dataset.Post;
end;