DllImport 函数的别名

Question

[Win32]::ShowWindowAsync<<..>> 有效，但这无效

Add-Type -TypeDefinition @'
using System;       // IntPtr
using System.Runtime.InteropServices;       // DllImport

public class Win32 {
    [DllImport("user32.dll")] public static extern bool ShowWindowAsync(IntPtr a, int b);
    
    public static bool f_1(IntPtr a, int b) {
        return (ShowWindowAsync(IntPtr a, int b));
    }
}
'@

write-host ([Win32]::f_1((Get-Process -Id $pid).MainWindowHandle, 2))

read-host 'end'

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Answer 1

您传递给 Add-Type 的 C# 代码存在多个问题。更改 f_1 方法主体的定义，以便它正确调用 extern 方法（删除您传递的参数前面的类型声明）并确保您 return return从它到调用者的价值：

public static bool f_1(IntPtr a, int b) {
    return ShowWindowAsync(a, b);
}

DllImport 函数的别名

Alias for function from DllImport

c#

powershell

dllimport