showmessage(‘进入方法？这里是dll里LoginElecReq‘);
try
ShellExecute(Application.Handle, ‘Open‘,‘prjGhMzPrePayPrint60.exe‘, PChar(pChargeSN), nil, SW_SHOWNORMAL);
except
on E:Exception do
showmessage(E.ClassName+‘:‘+E.Message);
end
原文：https://www.cnblogs.com/meitai/p/9186452.html