{***************************************************}
{名称：自动调整dbgrid表格宽度
{前提：
{输入：dbgrid
{返回：
{***************************************************}
function DBGridAutoSize(mDBGrid: TDBGrid; mOffset: Integer = 15): Boolean;
var
I: Integer;
begin
Result := False;
if not Assigned(mDBGrid) then
Exit;
if not Assigned(mDBGrid.DataSource) then
Exit;
if not Assigned(mDBGrid.DataSource.DataSet) then
Exit;
if not mDBGrid.DataSource.DataSet.Active then
Exit;
for I := 0 to mDBGrid.Columns.Count - 1 do
begin
if not mDBGrid.Columns[I].Visible then
Continue;
DBGridRecordSize(mdbgrid.Columns[i]);
if Assigned(mDBGrid.Columns[I].Field) then
mDBGrid.Columns[I].Width := Max(mDBGrid.Columns[I].Field.Tag,
mDBGrid.Canvas.TextWidth(mDBGrid.Columns[I].Title.Caption)) + mOffset
else
mDBGrid.Columns[I].Width :=
mDBGrid.Canvas.TextWidth(mDBGrid.Columns[I].Title.Caption) + mOffset;
mDBGrid.Refresh;
end;
Result := True;
end;
{***************************************************}
{ 返回记录数据网格列显示最大宽度是否成功 }
{***************************************************}
function DBGridRecordSize(mColumn: TColumn): Boolean;
begin
Result := False;
if not Assigned(mColumn.Field) then Exit;
mColumn.Field.Tag := Max(mColumn.Field.Tag,
TDBGrid(mColumn.Grid).Canvas.TextWidth(mColumn.Field.DisplayText));
Result := True;
end;
//DBGrid的DrawColumnCell方法
procedure TForm.DBGrid1DrawColumnCell(Sender: TObject;
const Rect: TRect; DataCol: Integer; Column: TColumn;
State: TGridDrawState);
begin
PubDm.DBGridRecordSize(Column);
end;
//DBGrid赋值后加入
DBGridAutoSize(DBGrid1)
