打开文件夹对话框

#include <windows.h>
#include <shlobj.h>

int _tmain(int argc, _TCHAR* argv[])
{
  CoInitialize(NULL);

  BROWSEINFO bi = {0};
  bi.ulFlags = BIF_RETURNONLYFSDIRS;

  LPITEMIDLIST pidl = SHBrowseForFolder(&bi);
  if (pidl)
  {
    TCHAR szFolder[MAX_PATH * sizeof(TCHAR)] = {0};

    if (SHGetPathFromIDList(pidl, szFolder))
      MessageBox(NULL, szFolder, _T("Selected Folder"), NULL);

    CoTaskMemFree(pidl);
  }

  CoUninitialize();

  return 0;
}