cstring tstr = "mp3 file(*.mp3)|*.mp3|";
tstr += "wma file(*.wma)|*.wma|";
tstr += "avi file(*.avi)|*.avi|";
tstr += "mid file(*.mid)|*.mid|";
tstr += "mpeg file(*.mpeg)|*.mpeg|";
tstr += "all files(*.*)| *.*||";
cfiledialog tfiledlg(true, null, null, ofn_hidereadonly | ofn_overwriteprompt, tstr, null);
if (idok == tfiledlg.domodal())
{
}
else
}