CString MasterFile; void CCompilerDlg::OnMasterButton() { CFileDialog fileDlg(TRUE,NULL,NULL,OFN_OVERWRITEPROMPT,"Text Files (*.txt)|*.txt|"); if (fileDlg.DoModal() == IDOK) { MasterFile = fileDlg.GetPathName(); SetDlgItemText(IDC_MASTERPATH, fileDlg.GetPathName()); GetDlgItem(IDC_INPUTBUTTON)->EnableWindow(TRUE); } }