问一个 Windows API 函数

查到了， IFileDialog类，设置FOS_PICKFOLDERS选项。
最低支持：Windows Vista

void ShowBrowseForFileDialog(LPTSTR folder_path)
{
CoInitialize(NULL);
IFileDialog *pfd = NULL;
HRESULT hr = 0;
if (SUCCEEDED(hr = CoCreateInstance(CLSID_FileOpenDialog, NULL, CLSCTX_INPROC_SERVER, IID_PPV_ARGS(&pfd))))
{
DWORD dwOptions;
if (SUCCEEDED(pfd->GetOptions(&dwOptions)))
{
pfd->SetOptions(dwOptions | FOS_PICKFOLDERS);
}
if (SUCCEEDED(pfd->Show(NULL)))
{
IShellItem *psi;
if (SUCCEEDED(pfd->GetResult(&psi)))
{
if(!SUCCEEDED(psi->GetDisplayName(SIGDN_DESKTOPABSOLUTEPARSING, &folder_path)))
{
MessageBox(NULL, TEXT("GetIDListName() failed"), NULL, NULL);
}
else
{
MessageBox(NULL, folder_path, NULL, NULL);
}
psi->Release();
}
}
pfd->Release();
}
CoUninitialize();
}