bool BrowseFolder(char *strFolderName)
{
 ITEMIDLIST* iIDl;
 strFolderName[0] = '\0';
 BROWSEINFO lpbi = {/*AfxGetMainWnd()->m_hWnd*/NULL, NULL, NULL, NULL, 0, NULL, NULL, NULL};
 iIDl = SHBrowseForFolder(&lpbi);
 SHGetPathFromIDList(iIDl, strFolderName);
 if (strFolderName == NULL) return(0);
 return(1);
}

// Example:

char windowsfolder[MAX_PATH];
if (browsefolder(windowsfolder))
{
 // Folder was selected.
}
else
{
 // User closed the dialog or something wrong happened.
}