DBGridEh 在粘贴中文时出现乱码和错位 100zhx_888]

http://www.fx114.net/qa-29-3439.aspx

回复于： 2011-10-11 15:02:08
unit DBGridEh; 



把下面这个函数替换成这样



procedure TDBGridInplaceEdit.WMPaste(var Message: TMessage);
var
  ClipboardText: WideString;
  FSearchText, AText, tmpText: WideString;
  AColumn: TColumnEh;
  Idx: Integer;
  CanChange, TextLocated, CanTryEdit: Boolean;
  EditKeyValue: Variant;
  NewSelStart: Integer;
begin
  if Grid.AllowedOperationUpdate and Column.CanModify(False) then
    if ((EditStyle = esDataList) or (Column.GetColumnType = ctKeyPickList)) then
    begin
      if Clipboard.HasFormat(CF_TEXT)
        then ClipboardText := Clipboard.AsText
        else Exit;
      with Grid do AColumn := Columns[SelectedIndex];
      FSearchText := Copy(Text, 1, SelStart) + ClipboardText + Copy(Text, SelStart + SelLength + 1, MAXINT);
      CanTryEdit := False;
      TextLocated := False;
      AText := FSearchText;
      if (EditStyle = esDataList) and (AColumn.UsedLookupDataSet <> nil) then //lookup
      begin
        EditKeyValue := Null;
        if AColumn.UsedLookupDataSet.Locate(AColumn.Field.LookupResultField, FSearchText,
          [loCaseInsensitive, loPartialKey]) then
        begin
          AText := AColumn.UsedLookupDataSet.FieldByName(AColumn.Field.LookupResultField).Text;
          EditKeyValue := AColumn.UsedLookupDataSet.FieldValues[AColumn.Field.LookupKeyFields];
          TextLocated := True;
          CanTryEdit := True;
        end
        else if Assigned(AColumn.OnNotInList) then
          CanTryEdit := True;

        if CanTryEdit then
        begin
          Grid.DataLink.Edit;
          CanChange := Grid.Datalink.Editing;
          if CanChange then
          begin
            Grid.Datalink.Modified;
            Text := AText;
            SelStart := Length(Text);
            if TextLocated
              then SelLength := Length(FSearchText) - SelStart
              else SelLength := 0;
            Grid.FEditKeyValue := EditKeyValue;
            Grid.FEditText := Text;
            if Assigned(FDataList) then FDataList.KeyValue := Grid.FEditKeyValue;
          end;
        end;
      end else //keypicklist
      begin
        Idx := StringsLocate(AColumn.PickList, FSearchText, [loCaseInsensitive, loPartialKey]);
        if (Idx <> -1) and Grid.CanEditModifyText then
        begin
          AText := AColumn.PickList[Idx];
          TextLocated := True;
          CanTryEdit := True;
        end
        else if Assigned(AColumn.OnNotInList) then
          CanTryEdit := True;

        if CanTryEdit then
        begin
          SelStart := Length(AText);
          if TextLocated
            then SelLength := Length(FSearchText) - SelStart
            else SelLength := 0;

          Grid.DataLink.Edit;
          CanChange := Grid.Datalink.Editing;
          if CanChange then Grid.Datalink.Modified;
          Text := AText;

          Grid.FEditText := Text;
          if Assigned(FPickList) then FPickList.ItemIndex := Idx;
        end;
      end;
    end else
    begin
      if EditCanModify and
          ( Clipboard.HasFormat(CF_TEXT) or
            Clipboard.HasFormat(CF_OEMTEXT) or
            Clipboard.HasFormat(CF_UNICODETEXT)
          )  then
      begin
        with Grid do AColumn := Columns[SelectedIndex];
        ClipboardText := Clipboard.AsText;
        AText := AColumn.GetAcceptableEditText(ClipboardText);

        tmpText := Text;
        FSearchText := Copy(tmpText, 1, SelStart) + AText + Copy(tmpText, SelStart + SelLength + 1, MAXINT);
        NewSelStart := Length(Copy(tmpText, 1, SelStart) + AText);
        Grid.DataLink.Edit;
        if Grid.Datalink.Editing then
        begin
          Grid.Datalink.Modified;
          Text := FSearchText;
          SelStart := NewSelStart;
          Grid.FEditText := Text;
          SendMessage(Handle, EM_SCROLLCARET, 0,0);
        end;
      end else
        inherited;
    end;
end;