function DBGridRecordSize(mColumn: TColumn): Boolean; { 返回记录数据网格列显示最大宽度是否成功 } 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; { DBGridRecordSize }function DBGridAutoSize(mDBGrid: TDBGrid; mOffset: Integer = 5): Boolean; { 返回数据网格自动适应宽度是否成功 } 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; 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; { DBGridAutoSize } procedure TfrmBrowse.grdBrowseDrawColumnCell(Sender: TObject; const Rect: TRect; DataCol: Integer; Column: TColumn; State: TGridDrawState); begin DBGridRecordSize(Column); end;procedure TfrmBrowse.btnAdjustClick(Sender: TObject); begin DBGridAutoSize(grdBrowse); end;
{ 返回记录数据网格列显示最大宽度是否成功 }
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; { DBGridRecordSize }function DBGridAutoSize(mDBGrid: TDBGrid; mOffset: Integer = 5): Boolean;
{ 返回数据网格自动适应宽度是否成功 }
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;
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; { DBGridAutoSize }
procedure TfrmBrowse.grdBrowseDrawColumnCell(Sender: TObject;
const Rect: TRect; DataCol: Integer; Column: TColumn;
State: TGridDrawState);
begin
DBGridRecordSize(Column);
end;procedure TfrmBrowse.btnAdjustClick(Sender: TObject);
begin
DBGridAutoSize(grdBrowse);
end;