in 1.4.3 version, when right click inside treegrid/datagrid control, but outside data rows, would trigger context menu.
but at that time, id is "null",
so we might got this error message: "Uncaught TypeError: Cannot read property 'id' of null"

it is working. thanks

with version 1.3.4, when click outside PropertyGrid control (for example click a button to trigger read event), selected row would lost focus immediately, make it unable to read selected row.

same thing in demo page
http://www.jeasyui.com/demo/main/index.php?plugin=PropertyGrid&theme=default&dir=ltr&pitem=

version 1.3.3 seems do not have this issue.