Delphi DBGrid记录全选和反选拖动处理
DBGrid1.DragMode := dmManual;//留意这个设置不要变
procedure ApplicationEvents1Message(var Msg: tagMSG; var Handled: Boolean);
procedure TForm18.ApplicationEvents1Message(var Msg: tagMSG;
var Handled: Boolean);
begin
case Msg.message of
WM_LBUTTONDOWN:
begin
if Msg.hwnd = DBGrid1.Handle then
begin
DBGrid1.Perform(Msg.message, Msg.wParam, Msg.lParam);
DBGrid1.DragMode := dmAutomatic;
end;
end;
WM_LBUTTONUP: DBGrid1.DragMode := dmManual;
end;
end;
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procedure TForm10.SpeedButton7Click(Sender: TObject);
//全选
begin
with DBGrid1.datasource.dataset do
begin
First;
while not dm.AQ_personal.EOF do
begin
DBGrid1.SelectedRows.CurrentRowSelected := True;
dm.AQ_personal.Next;
end;
end;
end;
procedure TForm10.SpeedButton8Click(Sender: TObject);//反选
var
i:integer;
SavePlace:TBookmarkList;
begin
DBGrid1.DataSource.DataSet.DisableControls;
for i:=1 to DBGrid1.DataSource.DataSet.RecordCount do
begin
DBGrid1.DataSource.DataSet.RecNo:=i;
DBGrid1.SelectedRows.CurrentRowSelected:=Not DBGrid1.SelectedRows.CurrentRowSelected;
end;
SavePlace:=DBGrid1.SelectedRows;
// DBGrid1.DataSource.DataSet.GotoBookmark(Pointer(SavePlace[0]));//将指针指向当前选择的第一条记录
DBgrid1.DataSource.DataSet.EnableControls;
end;
