本文整理汇总了C#中System.Runtime.InteropServices.Marshal类的典型用法代码示例。如果您正苦于以下问题：C# Marshal类的具体用法？C# Marshal怎么用？C# Marshal使用的例子？那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。
Marshal类属于System.Runtime.InteropServices命名空间，在下文中一共展示了Marshal类的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: Main
//引入命名空间
using System;
using System.Text;
using System.Runtime.InteropServices;
public struct Point
{
public Int32 x, y;
}
public sealed class App
{
static void Main()
{
// Demonstrate the use of public static fields of the Marshal class.
Console.WriteLine("SystemDefaultCharSize={0}, SystemMaxDBCSCharSize={1}",
Marshal.SystemDefaultCharSize, Marshal.SystemMaxDBCSCharSize);
// Demonstrate the use of the SizeOf method of the Marshal class.
Console.WriteLine("Number of bytes needed by a Point object: {0}",
Marshal.SizeOf(typeof(Point)));
Point p = new Point();
Console.WriteLine("Number of bytes needed by a Point object: {0}",
Marshal.SizeOf(p));
// Demonstrate how to call GlobalAlloc and
// GlobalFree using the Marshal class.
IntPtr hglobal = Marshal.AllocHGlobal(100);
Marshal.FreeHGlobal(hglobal);
// Demonstrate how to use the Marshal class to get the Win32 error
// code when a Win32 method fails.
Boolean f = CloseHandle(new IntPtr(-1));
if (!f)
{
Console.WriteLine("CloseHandle call failed with an error code of: {0}",
Marshal.GetLastWin32Error());
}
}
// This is a platform invoke prototype. SetLastError is true, which allows
// the GetLastWin32Error method of the Marshal class to work correctly.
[DllImport("Kernel32", ExactSpelling = true, SetLastError = true)]
static extern Boolean CloseHandle(IntPtr h);
}输出：
SystemDefaultCharSize=2, SystemMaxDBCSCharSize=1 Number of bytes needed by a Point object: 8 Number of bytes needed by a Point object: 8 CloseHandle call failed with an error code of: 6