我正在尝试使用 kernal32.dll 中的几个函数。但是,当我的应用程序尝试调用第一个函数时,它会抛出一个 EntryPointNotFoundException Unable to find an entry point named 'SetDllDirectory' in DLL 'kernel32.dll'.
public class MyClass
{
/// <summary>
/// Use to interface to kernel32.dll for dynamic loading of similar DLLs.
/// </summary>
internal static class UnsafeNativeMethods
{
[DllImport("kernel32.dll", CharSet = CharSet.Ansi, ExactSpelling = true, SetLastError = true)]
internal static extern IntPtr LoadLibrary(string lpFileName);
[DllImport("kernel32.dll", CharSet = CharSet.Ansi, ExactSpelling = true, SetLastError = true)]
internal static extern bool SetDllDirectory(string lpPathName);
[DllImport("kernel32.dll", CharSet = CharSet.Ansi, ExactSpelling = true, SetLastError = true)]
internal static extern IntPtr GetProcAddress(IntPtr hModule, string procName);
}
private void MyFunc()
{
if (UnsafeNativeMethods.SetDllDirectory(_location) == false) // <-- Exception thrown here.
{
throw new FileNotFoundException(_location);
}
/* Some code. */
_dllHandle = UnsafeNativeMethods.LoadLibrary(_fullPath);
/* Some more code. */
_fptr = UnsafeNativeMethods.GetProcAddress(_dllHandle, _procName);
/* Yet even more code. */
}
}
任何关于我做错了什么以及如何让它工作的想法都将不胜感激。谢谢。
最佳答案
您必须删除 ExactSpelling 属性。该函数的真实名称是 SetDllDirectoryW。我还建议您使用 CharSet.Auto,使用 Ansi 是一种有损转换,可能会导致微妙的问题。 XP SP1 之前的任何 Windows 版本都无法导出。
关于C# EntryPointNotFoundException 无法在 DLL 'SetDllDirectory' 中找到名为 'kernel32.dll' 的入口点,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/3753306/