I have combo like this
var cb_field=dhtmlXComboFromSelect(“id_field”);
cb_field.readonly(true);
If I click back space key in the combo, it causes person to go to previous page.
If Combo is in dhtmlx window, it closes the dhtmlx window and goes to previous page.
IE only so far.
Actually I tried it in your website example dhtmlx.com/docs/products/dhtmlxCombo/index.shtml for read only example and it also failed for Back Space.
To reproduce, in IE, click on Read only combo and press backspace.