COM应用实例--获取桌面墙纸路径

COM应用实例--获取桌面墙纸路径：Win32控制台程序(C++)

/*
	功能：	获取桌面墙纸的路径，并建立一个该墙纸的快捷方式保存在指定路径
	说明：	COM应用实例, Win32控制台程序
*/
#include <iostream>
#include <afx.h>
#include <wininet.h>
#include <Shlobj.h>

using namespace std;

CString getWallpaper()							// 获取桌面墙纸的路径
{
	WCHAR wszWallpaper[MAX_PATH];
	CString strPath;
	HRESULT hr;
	IActiveDesktop* pIAD;
	
	hr = CoCreateInstance(CLSID_ActiveDesktop, NULL, CLSCTX_INPROC_SERVER, IID_IActiveDesktop, (void**)&pIAD);
	if(SUCCEEDED(hr))
	{
		hr = pIAD->GetWallpaper(wszWallpaper, MAX_PATH, 0);		// 获得桌面墙纸的路径
		if(SUCCEEDED(hr))
		{
			wcout<<L"Wallpaper path is: "<<wszWallpaper<<endl;
			strPath = wszWallpaper;
		}
		else
			cout<<"GetWallpaper() failed."<<endl;
		pIAD->Release();
	}
	else
		cout<<"CoCreateInstance() failed."<<endl;

	return strPath;
}

bool SavetoShellLink(const CString &path)
{
	bool ret = false;
	IShellLink *pISL;
	IPersistFile *pIPF;
	
	HRESULT hr = CoCreateInstance(CLSID_ShellLink, NULL, CLSCTX_INPROC_SERVER, IID_IShellLink, (void**)&pISL);
	if(SUCCEEDED(hr))
	{
		hr = pISL->SetPath(path);				// 设置快捷方式的目标
		if(SUCCEEDED(hr))
		{
			hr = pISL->QueryInterface(IID_IPersistFile, (void**)&pIPF);
			if(SUCCEEDED(hr))
			{
				hr = pIPF->Save(L"C:\\wallPaper.lnk", FALSE);
				if(SUCCEEDED(hr))				// 快捷方式创建成功
					ret = true;
				pIPF->Release();
			}
		}
		pISL->Release();
	}

	return ret;
}

int main()
{
	CoInitialize(NULL);							// 初始化COM库(让Windows加载DLLs)

	CString wallpaper = getWallpaper();
	if(wallpaper.GetLength() > 0)
	{
		if(SavetoShellLink(wallpaper))
			cout<<"SavetoShellLink() Succeeded"<<endl;
		else
			cout<<"SavetoShellLink() Failed"<<endl;
	}

	CoUninitialize();

	return 0;
}