IFileDialog->FileOpenDlg使用

//初始化Com接口
	HRESULT hr = CoInitializeEx(NULL, COINIT_APARTMENTTHREADED | COINIT_DISABLE_OLE1DDE);
	if (SUCCEEDED(hr))
	{
		//创建pOpenFileDlg
		IFileDialog* pOpenFileDlg = NULL;
		hr = CoCreateInstance(CLSID_FileOpenDialog, NULL, CLSCTX_ALL, IID_IFileOpenDialog, reinterpret_cast(&pOpenFileDlg));
		if (SUCCEEDED(hr))
		{
			//显示打开对话框
			hr = pOpenFileDlg->Show(NULL);
			//从对话框中获取的文件路径抽象到IShellItem对象中
			if (SUCCEEDED(hr))
			{
				
				IShellItem* pItem = NULL;
				hr = pOpenFileDlg->GetResult(&pItem);
				//从抽象接口中获取名字
				if (SUCCEEDED(hr))
				{
					PWSTR pszFilePath = NULL;
					hr = pItem->GetDisplayName(SIGDN_FILESYSPATH, &pszFilePath);

					//获取成功则 pszFilePath就是对应的路径 ，下方写对应的代码即可。
					if (SUCCEEDED(hr))
					{
						m_edtFilePath = pszFilePath;
						UpdateData(FALSE);
						//释放抽象对象内存
						CoTaskMemFree(pszFilePath);
					}
					pItem->Release();
				}

			}
			pOpenFileDlg->Release();
		}
	}
	CoUninitialize();