TIWCGJQGridOptions.LoadUI Property
his option controls what to do when an ajax operation is in progress. disable - disables the jqGrid progress indicator. This way you can use your own indicator. enable (default) - enables “Loading” message in the center of the grid. block - enables the “Loading” message and blocks all actions in the grid until the ajax request is finished. Note that this disables paging, sorting and all actions on toolbar, if any.
published property LoadUI: TIWCGJQGridLoadUI index 36 read GetLoadUI write SetLoadUI stored IsEnumerStored;