An application sends a ZGM_INTERPRETNUMERIC message to enable or disable the interpretation of text as a numeric value when entered from an editable cell by the user, or programmatically entered into the cell with the ZGM_SETCELLTEXT message.
ZGM_INTERPRETNUMERIC
wParam = (WPARAM) (BOOL) fEnable; //enable flag
lParam = 0; //not used; must be zero
This message does not return a value.
Interpret numeric is enabled by default.