看了看MSDN里的一個關于IActiveDesktop例子：

?

// ActiveDesktopTest.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#include <Objbase.h>

#include <Unknwn.h>
#include <Shlobj.h>
#include <iostream>

int _tmain(int argc, _TCHAR* argv[])
{

??? HRESULT hr = NULL;
???
??? CoInitialize(NULL);

??? IActiveDesktop *pActiveDesktop;

??? //Create an instance of the Active Desktop
??? hr = CoCreateInstance(CLSID_ActiveDesktop, NULL, CLSCTX_INPROC_SERVER,
??????? IID_IActiveDesktop, (void**)&pActiveDesktop);

???
??? WCHAR?? wszWallpaper [MAX_PATH];
??? if (SUCCEEDED(hr))
??? {
??????? pActiveDesktop->GetWallpaper(wszWallpaper, MAX_PATH, 0);

??????? std::wcout << L"Wallpaper path is:\n??? " << wszWallpaper << std::endl;
??? }

??? pActiveDesktop->Release();

??? CoUninitialize();
??? return 0;
}

?

在過程中同樣出現了很多人遇到的編譯不過的問題， 然后在stdafx.h 頭文件里添加：

#include <Windows.h>
#include <wininet.h>
#include <stdio.h>

?

運行結果：

轉載于:https://www.cnblogs.com/GnagWang/archive/2010/07/07/1773222.html

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