public static void FreeLibraryEx(LibraryHandle libraryHandle)
{
FreeLibrary(libraryHandle.DangerousGetHandle());
if (File.Exists(libraryHandle.LibraryPath))
{
File.Delete(libraryHandle.LibraryPath);
}
}
internal static TDelegate GetUnmanagedDelegate <TDelegate>(this LibraryHandle library) where TDelegate : class
{
var delegateType = typeof(TDelegate);
var attributeType = typeof(UnmanagedProcedureAttribute);
var customAttributes = delegateType.GetCustomAttributes(attributeType, false);
if (customAttributes.Length != 1)
{
throw new InvalidOperationException("Delegate " + delegateType.FullName + "should be marked with " + attributeType.FullName);
}
var procedureName = ((UnmanagedProcedureAttribute)customAttributes[0]).Name;
var methodHandle = GetProcAddress(library, procedureName);
if (methodHandle.IsInvalid)
{
var error = Marshal.GetLastWin32Error();
throw new InvalidOperationException("Cannot get proc address '" + procedureName + "'. Win32 error =" + error);
}
return(Marshal.GetDelegateForFunctionPointer(methodHandle.DangerousGetHandle(), delegateType) as TDelegate);
}
private static extern MethodHandle GetProcAddress(LibraryHandle library, string procedureName);
