An application sends a ZGM_ENABLECOPY message to enable or disable the users ability to use [Ctrl+C] to copy the selected grid area to the Windows clipboard.
ZGM_ENABLECOPY
wParam = (WPARAM) (BOOL) fEnable; //enable flag
lParam = 0; //not used; must be zero
This message does not return a value.
Copying is enabled by default.