I'm trying to use CreateProcess to start a child process, however I keep getting error 2, which, according to the documentation is file not found.
My code looks like this:
if (!(CreateProcess(LPCTSTR("test.exe") ,NULL ,NULL,NULL,FALSE ,0 ,NULL ,NULL ,&producer_si
,&producer)))
{
printf("Create process failed!(%d)\n", GetLastError());
}
Where test.exe is an executable program which I created earlier. The child process is very simple, with the code looking like this:
void _tmain (int argc, TCHAR* argv[])
{
printf("%s\n", "hello!");
}
test.exe is also found in the same folder as the parent process. I'm not understanding why I'm always getting an error code of 2.
Error 2 is ERROR_FILE_NOT_FOUND. As others have told you, you are relying on a relative path when you need to use an absolute path instead.
Also, LPCTSTR("test.exe") is not valid code. If UNICODE is defined, CreateFile() maps to CreateFileW(), and LPCTSTR maps to LPCWSTR ie const wchar_t*. You cannot typecast a char* to a wchar_t* and end up with meaningful data. If you want to use TCHAR-sensitive literals, use the TEXT() macro instead, eg:
if (!CreateProcess(TEXT("full path to\\test.exe"), ...))
Otherwise, forget using TCHAR and just write Ansi-specific or Unicode-specific code instead, depending on your needs:
if (!CreateProcessA("full path to\\test.exe", ...))
if (!CreateProcessW(L"full path to\\test.exe", ...))
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