如何使用IFileOpenDialog打开*模式*文件对话框？

#include <windows.h>
#include <shobjidl.h>
using namespace std;

IFileOpenDialog* pFileOpen;
HRESULT hr = CoCreateInstance(CLSID_FileOpenDialog, NULL, CLSCTX_ALL, IID_IFileOpenDialog, reinterpret_cast<void**>(&pFileOpen));

DWORD dwOptions;
hr = pFileOpen->GetOptions(&dwOptions);
hr = pFileOpen->SetOptions(dwOptions | FOS_ALLOWMULTISELECT | FOS_FILEMUSTEXIST);

hr = pFileOpen->SetTitle(L"选择文件");

hr = pFileOpen->Show(NULL);
if (SUCCEEDED(hr))
{
    IShellItemArray* pItems;
    hr = pFileOpen->GetResults(&pItems);
    DWORD dwNumItems;
    hr = pItems->GetCount(&dwNumItems);
    
    for (DWORD i = 0; i < dwNumItems; i++)
    {
        IShellItem* pItem;
        hr = pItems->GetItemAt(i, &pItem);
        
        PWSTR pszFilePath;
        hr = pItem->GetDisplayName(SIGDN_FILESYSPATH, &pszFilePath);
        
        // 处理选择的文件路径
        // ...
        
        CoTaskMemFree(pszFilePath);
        pItem->Release();
    }
    
    pItems->Release();
}

pFileOpen->Release();