Hi Szymon,
Thanks for choosing Syncfusion Products.
Currently there is no event support for handling record click. We have to handle this in double click, to prevent raising the message pop while click on the header cell we have to add some conditions. We have created the sample to achieve this . Please find the sample in the following link.
Sample location:
http://www.syncfusion.com/uploads/redirect.aspx?&team=support&file=Sample 97228-1990727603.zip
Please let us know if you need more information.
Thanks,
Karthick