为了在 Unity 项目中编译 C# 源代码,Unity Editor 使用 C# 编译器。
C# 编译器 | C# 语言版本 |
---|---|
Roslyn | C# 9.0 |
The Editor passes a default set of options to the C# compiler. To pass additional options in your project, see the documentation on Platform Dependent Compilation.
If you try to use unsupported features in your project, compilation generates errors.
Unity supports unmanaged functions pointers as introduced in C# 9, but it doesn’t support extensible calling conventions. The following example code provides more detailed information about how to correctly use unmanaged function pointers.
The following example targets Windows platforms and requires the Allow ‘unsafe’ code to be enabled in the Player Settings menu. For more information about C#’s unsafe
context, see Microsoft’s unsafe (C# Reference) documentation or Microsoft’s Unsafe code, pointer types, and function pointers documentation.
using System;
using System.Runtime.InteropServices;
using UnityEngine;
public class UnmanagedFunctionPointers : MonoBehaviour
{
[DllImport("kernel32.dll")]
static extern IntPtr LoadLibrary(string lpLibFileName);
[DllImport("kernel32.dll")]
static extern IntPtr GetProcAddress(IntPtr hModule, string lpProcName);
// You must enable "Allow 'unsafe' code" in the Player Settings
unsafe void Start()
{
#if UNITY_EDITOR_WIN || UNITY_STANDALONE_WIN
// This example is only valid on Windows
// Get a pointer to an unmanaged function
IntPtr kernel32 = LoadLibrary("kernel32.dll");
IntPtr getCurrentThreadId = GetProcAddress(kernel32, "GetCurrentThreadId");
// The unmanaged calling convention
delegate* unmanaged[Stdcall]<UInt32> getCurrentThreadIdUnmanagedStdcall = (delegate* unmanaged[Stdcall]<UInt32>)getCurrentThreadId;
Debug.Log(getCurrentThreadIdUnmanagedStdcall());
#endif
}
}
Did you find this page useful? Please give it a rating:
Thanks for rating this page!
What kind of problem would you like to report?
Thanks for letting us know! This page has been marked for review based on your feedback.
If you have time, you can provide more information to help us fix the problem faster.
Provide more information
You've told us this page needs code samples. If you'd like to help us further, you could provide a code sample, or tell us about what kind of code sample you'd like to see:
You've told us there are code samples on this page which don't work. If you know how to fix it, or have something better we could use instead, please let us know:
You've told us there is information missing from this page. Please tell us more about what's missing:
You've told us there is incorrect information on this page. If you know what we should change to make it correct, please tell us:
You've told us this page has unclear or confusing information. Please tell us more about what you found unclear or confusing, or let us know how we could make it clearer:
You've told us there is a spelling or grammar error on this page. Please tell us what's wrong:
You've told us this page has a problem. Please tell us more about what's wrong:
Thank you for helping to make the Unity documentation better!
Your feedback has been submitted as a ticket for our documentation team to review.
We are not able to reply to every ticket submitted.