man mtext_get_prop_keys () - Get a list of text property keys at a position of an M-text.
NAME
mtext_get_prop_keys - Get a list of text property keys at a position of an M-text.
SYNOPSIS
int mtext_get_prop_keys (MText * mt, int pos, MSymbol ** keys)
DESCRIPTION
The mtext_get_prop_keys() function creates an array whose elements are the keys of text properties found at position pos in M-text mt, and sets *keys to the address of the created array. The user is responsible to free the memory allocated for the array.
RETURN VALUE
If the operation was successful, mtext_get_prop_keys() returns the length of the key list. Otherwise it returns -1 and assigns an error code to the external variable merror_code.
ERRORS
MERROR_RANGE
SEE ALSO
mtext_get_prop(), mtext_put_prop(), mtext_put_prop_values(), mtext_get_prop_values(), mtext_push_prop(), mtext_pop_prop()