An application sends a ZGM_ENABLESORT message to enable or disable sorting of the ZeeGrid.
ZGM_ENABLESORT
wParam = (WPARAM) (BOOL) fEnable; //enable flag
lParam = 0; //not used; must be zero
This message does not return a value.
Sorting is enabled by default. This message only affects the users ability to sort the ZeeGrid by double-clicking in the column header.