无法使用 JNA 访问 IActiveDesktop 接口（不支持此类接口（HRESULT：80004002）

Question

我正在尝试使用 IActiveDesktop 界面更改 windows 7 上的桌面墙纸。所以我开始我的项目，我首先使用 SystemParametersInfo method using the User32 class. But there isn't fade effect and I can't modify the image position. After some research, I found the IActiveDesktop interface and this 。我接受了答案并对其进行了调整。但是当我运行我的代码时，它抛出 Exception in thread "main" com.sun.jna.platform.win32.COM.COMException: No such interface supported(HRESULT: 80004002).

在这里你可以找到我的代码：

首先是代表 IActiveDesktop 接口的 class

import com.sun.jna.Pointer;
import com.sun.jna.platform.win32.COM.COMUtils;
import com.sun.jna.platform.win32.COM.Unknown;
import com.sun.jna.platform.win32.*;
import com.sun.jna.ptr.PointerByReference;

import static com.sun.jna.platform.win32.Ole32.INSTANCE;

public class ActiveDesktop extends Unknown {

    // {75048700-EF1F-11D0-9888-006097DEACF9}
    // {F490EB00-1240-11D1-9888-006097DEACF9}

    private static final Guid.GUID CLSID_ActiveDesktop = getGUID("{75048700-EF1F-11D0-9888-006097DEACF9}");
    private static final Guid.GUID IID_IActiveDesktop = getGUID("{F490EB00-1240-11D1-9888-006097DEACF9}");

    private static Guid.GUID getGUID(String guidStr) {
        Guid.GUID guid = new Guid.GUID();

        INSTANCE.IIDFromString(guidStr, guid);

        return guid;
    }

    private ActiveDesktop(Pointer pvInstance) {
        super(pvInstance);
    }

    public static ActiveDesktop create(){
        PointerByReference p = new PointerByReference();

        WinNT.HRESULT hr = INSTANCE.CoCreateInstance(CLSID_ActiveDesktop, null, WTypes.CLSCTX_INPROC_SERVER, IID_IActiveDesktop, p); // THE EXCEPTION IS THROW HERE
        COMUtils.checkRC(hr);

        return new ActiveDesktop(p.getValue());
    }
}

以及仅加载 Ole32 库和 IActiveDesktop 接口的 Main：

import com.sun.jna.platform.win32.Ole32;

public class Main {

    public static void main(String[] args) {
        Ole32.INSTANCE.CoInitializeEx(Pointer.NULL, Ole32.COINIT_MULTITHREADED);

        try {
            ActiveDesktop desktop = ActiveDesktop.create();
        } finally {
            Ole32.INSTANCE.CoUninitialize();
        }
    }
}

经过大量谷歌搜索后，我找不到答案。谁能帮我？可能答案是在这种情况下，请向我解释哪里出了问题。谢谢。

注意：我是法国人，所以我的英语并不完美。对不起...

Answer 1

我终于找到了解决办法。即初始化Ole32时将Ole32.COINIT_MULTITHREADED替换为Ole32.COINIT_APARTMENTTHREADED。

无法使用 JNA 访问 IActiveDesktop 接口（不支持此类接口（HRESULT：80004002）

Unable to access the IActiveDesktop interface with JNA (No such interface supported(HRESULT: 80004002)

java

windows-7

jna