[FieldOffset(24)]
public fixed Int32 myArray[4];
As far as I understand it should be an int array. But I’m not sure. I stumbled over this while looking over a code base which is not mine. It seems there is worked a lot with pointers.
2
A fixed array is not a regular managed array, think of it instead as 4 int values stored next to each other. Or a C array, if you know C.
The FieldOffset attribute tells the marshaller where the original data is stored during marshalling, ie during P/Invoke when you use the structure, again to reach parity with C struct definitions.
1
[FieldOffset(24)] public fixed Int32 myArray[4];
Before elaborating you might need to learn below:
Struct
You might need to acquire some knowledge regarding `struct` in dotnet. basically `struct` in dotnet is a value type. that is typically used to encapsulate small groups of related variables together with each other.
FieldOffset(24)
[FieldOffset(24)] declares that myArray field starts at offset 24 bytes within the containing struct
fixed
The fixed keyword in dotnet is used primarily in unsafe code contexts to interact with unmanaged memory. In your case myArray is an array of four element Int32 elements.