Sample for using folder browser in Windows C++ desktop app.

SHBrosweForFolder.cpp

int CALLBACK BrowserCallbackProc(HWND hWnd, UINT uMsg, LPARAM lParam, LPARAM lpData)
{
	switch (uMsg)
	{
	case   BFFM_INITIALIZED:
		::SendMessage(hWnd, BFFM_SETSELECTION, 1, lpData);
		break;
	default:
		break;
	}
	return   0;
}

//////////////////////////////////////////////////////////////////////////  
// [IN]   HWND   hWnd：  
// [IN]   LPCTSTR   strTitle：窗口标题  
// [IN][OUT]   CString&   strDir：默认路径和选择得到的目录  
//________________________________________________________________________  
bool MyAppUtil::SelDirectory(HWND hWnd, LPCTSTR strTitle, CString& strDir)
{
	BROWSEINFO bi;
	TCHAR szDisplayName[MAX_PATH] = { 0 };

	bi.hwndOwner = hWnd;
	bi.pidlRoot = NULL;
	bi.pszDisplayName = szDisplayName;
	bi.lpszTitle = strTitle;
	bi.ulFlags = 0;
	bi.lpfn = BrowserCallbackProc;
	bi.lParam = (LPARAM)(LPCTSTR)strDir;
	bi.iImage = NULL;

	//显示目录选择对话框，如果按了取消，那么piid为NULL  
	ITEMIDLIST* piid = ::SHBrowseForFolder(&bi);

	if (piid == NULL)
	{
		return   false;
	}

	//   得到选择的目录  
	BOOL bValidPath = ::SHGetPathFromIDList(piid, szDisplayName);
	if (!bValidPath)
	{
		return   false;
	}

	LPMALLOC   lpMalloc;
	VERIFY(::SHGetMalloc(&lpMalloc) == NOERROR);
	lpMalloc->Free(piid);
	lpMalloc->Release();

	if (szDisplayName[0] == '\0')
	{
		return false; //用户选择的可能的虚拟文件系统  
	}

	strDir = szDisplayName;
	strDir.TrimRight(_T("\\"));

	return true;
}