OPENFILENAME ofn; // common dialog box structure
TCHAR szFile[MAX_PATH]; // buffer for file name
// Initialize OPENFILENAME
ZeroMemory(&ofn, sizeof(ofn));
ofn.lStructSize = sizeof(ofn);
ofn.hwndOwner = hwndDlg;
ofn.lpstrFile = szFile;
ofn.lpstrFile[0] = ' '; //
// Set lpstrFile[0] to ' ' so that GetOpenFileName does not
// use the contents of szFile to initialize itself.
//
ofn.nMaxFile = sizeof(szFile);
ofn.lpstrFilter = _T("Text files (*.txt) *.txt ");
ofn.nFilterIndex = 1;
ofn.lpstrFileTitle = NULL;
ofn.nMaxFileTitle = 0;
ofn.lpstrInitialDir = NULL;
ofn.Flags = OFN_PATHMUSTEXIST | OFN_FILEMUSTEXIST;
ofn.lpstrTitle = _T("打开"); // set the dialog box title
if (GetOpenFileName(&ofn))
{
SetDlgItemText(hwndDlg, IDC_EDIT1, szFile);
}