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POHow do I run an external program?
 

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  1. POHow do I run an external program?
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    <p>I'm on Linux mint 12.</p> <p>I want to run a program <code>usr/share/application/firefox</code> and then pass a string anywhere. I haven't found a solution for Linux but from what I've seen so far, there are many theories for Windows.</p> <pre><code>size_t ExecuteProcess(std::wstring FullPathToExe, std::wstring Parameters, size_t SecondsToWait) { size_t iMyCounter = 0, iReturnVal = 0, iPos = 0; DWORD dwExitCode = 0; std::wstring sTempStr = L""; /* - NOTE - You should check here to see if the exe even exists */ /* Add a space to the beginning of the Parameters */ if (Parameters.size() != 0) { if (Parameters[0] != L' ') { Parameters.insert(0,L" "); } } /* The first parameter needs to be the exe itself */ sTempStr = FullPathToExe; iPos = sTempStr.find_last_of(L"\\"); sTempStr.erase(0, iPos +1); Parameters = sTempStr.append(Parameters); /* CreateProcessW can modify Parameters thus we allocate needed memory */ wchar_t * pwszParam = new wchar_t[Parameters.size() + 1]; if (pwszParam == 0) { return 1; } const wchar_t* pchrTemp = Parameters.c_str(); wcscpy_s(pwszParam, Parameters.size() + 1, pchrTemp); /* CreateProcess API initialization */ STARTUPINFOW siStartupInfo; PROCESS_INFORMATION piProcessInfo; memset(&amp;siStartupInfo, 0, sizeof(siStartupInfo)); memset(&amp;piProcessInfo, 0, sizeof(piProcessInfo)); siStartupInfo.cb = sizeof(siStartupInfo); if (CreateProcessW(const_cast&lt;LPCWSTR&gt;(FullPathToExe.c_str()), pwszParam, 0, 0, false, CREATE_DEFAULT_ERROR_MODE, 0, 0, &amp;siStartupInfo, &amp;piProcessInfo) != false) { /* Watch the process. */ dwExitCode = WaitForSingleObject(piProcessInfo.hProcess, (SecondsToWait * 1000)); } else { /* CreateProcess failed */ iReturnVal = GetLastError(); } /* Free memory */ delete[]pwszParam; pwszParam = 0; /* Release handles */ CloseHandle(piProcessInfo.hProcess); CloseHandle(piProcessInfo.hThread); return iReturnVal; } </code></pre> <p>You can see many theories <a href="http://goffconcepts.com/techarticles/development/cpp/createprocess.html" rel="nofollow">here</a> the first answer describes how to get it done for Linux with C, I want to do it with C++, I've been googling for hours and i saw many <em>theories</em>. This subject appears to have more theories than quantum physics <code>:)</code></p> <p>I am a Python guy, because I like simplicity, so please give a simple code that would work on 32 and 64 bit if possible. </p> <p>I would like to do something like if <code>usr/share/application/firefox</code> is available, run it, else run <code>usr/share/application/googlechrome</code></p> <p>And would you please tell me why can't the same code run on Mac and Windows?</p>
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    1. COI started editing this, but I think there's just too much wrong with it to salvage. Can you clean it up, including adding basic capitalisation and spelling? What is your question? This is not a webforum or a "give me the code" site.
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      1. USLightness Races in Orbit
    2. COAnything done in C can (almost always) also be done in C++, so finding a solution in C will still almost always compile with C++ as well. There also appears to be *more than one question here*.
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      1. USAndrew Marshall
    3. COIf you're using std::wstring then the "c" tag is a bit wrong.
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      1. USOmri Barel
 

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