GCompareDataFunc

Specifies the type of a comparison function used to compare two values. The function should return a negative integer if the first value comes before the second, 0 if they are equal, or a positive integer if the first value comes after the second.

alias GCompareDataFunc = int function(void* a, void* b, void* userData)

Return Value

negative value if a < b; zero if a = b; positive value if a > b