QProcess start a console program

[Shawn]

I used QProcess to start an external console program called client.exe.

QProcess *CommProcess = new QProcess();
CommProcess->start("E:/work/client.exe");
if (CommProcess->state() == QProcess::Starting)
	cout << "client program is starting" << endl;
else if (CommProcess->state() == QProcess::Running)
	cout << "client program is running" << endl;
else if (CommProcess->state() == QProcess::NotRunning)
	cout << "client program is NOT running" << endl
		<< "Error Code : " << CommProcess->error() << endl;

QProcess *CommProcess = new QProcess();
CommProcess->start("E:/work/client.exe");
if (CommProcess->state() == QProcess::Starting)
	cout << "client program is starting" << endl;
else if (CommProcess->state() == QProcess::Running)
	cout << "client program is running" << endl;
else if (CommProcess->state() == QProcess::NotRunning)
	cout << "client program is NOT running" << endl
		<< "Error Code : " << CommProcess->error() << endl;

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It turns out with "client program is running". Seems everything is OK.
But actually it doesn't. Because I create a shared memory area in client.exe and open it in the current qt program. But I failed to open that area in current program.
If I run client.exe(both directly or using Visual C++ debugging model) before starting my qt program, everything just turns out OK.
Can anybody give me some hint ?