自动调整delphi中dbgrid大小

{***************************************************} {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)