Delphi DbgridEh实现鼠标拖动选中列，并使复选框选中

1.先设置表格列的属性

procedure TForm_TaskToDW.InitGrid;

var

MyCol: TColumnEh;

begin

with DBGridEh_Task do

begin

Columns.Clear;

MyCol := Columns.Add;

MyCol.FieldName := 'Select';

MyCol.Title.Caption := '选择';

MyCol.Alignment := taCenter;

MyCol.Width := 50;

MyCol.ReadOnly := false;

MyCol := Columns.Add;

MyCol.FieldName := 'TASK_NAME';

MyCol.Title.Caption := '任务名称';

MyCol.Width := 300;

//MyCol.Alignment := taCenter;

MyCol.ReadOnly := True;

end;

end;

2.创建CDS

procedure TForm_TaskToDW.CreateCDSFlds;

begin

with CDS_Task do

begin

FieldDefs.Clear;

FieldDefs.Add('Select', ftBoolean);

FieldDefs.Add('TASK_ID', ftString, 36);

FieldDefs.Add('TASK_NAME', ftString, 120);

FieldDefs.Add('IS_GEN', ftString, 1);

CreateDataSet;

end;

end;

3.通过下面这个方法实现拖动选中复选框

procedure TForm_TaskToDW.SetSelRowState(State: Boolean = True);

var

I: Integer;

BookMark: TBookmarkListEh;

begin

//BookMark := DBGridEh_Task.SelectedRows; //TBookmarkListEh

for I := 0 to DBGridEh_Task.SelectedRows.Count -1 do

begin

//if DBGridEh_Task.SelectedRows.CurrentRowSelected then //行被选中

CDS_Task.GotoBookmark(Pointer(DBGridEh_Task.SelectedRows.Items[i]));

begin

CDS_Task.Edit;

CDS_Task.FieldByName('Select').AsBoolean := State;

CDS_Task.Post;

end;

end;

end;