On 10/08/2007 09:58, Mike Williams wrote:
> On 10/08/2007 02:01, Ilya Bobir wrote:
>> Ilya Bobir wrote:
>>> [...]
>>>
>>> It does work on NT. But CreateProcess(..., CREATE_NO_WINDOW, ...) is
>>> needed. An example implementation is attached.
>>>
>> I've just found slightly different approach to creating a console for a
>> child process. It has an advantage of creating one console per child
>> thus allowing communication with more that one child process.
>> Here is the code:
>>
>> SECURITY_ATTRIBUTES sa;
>> PROCESS_INFORMATION pi;
>> HANDLE newstdin, newstdout;
>> HANDLE read_stdout, write_stdin;
>>
>> sa.lpSecurityDescriptor = 0;
>> sa.nLength = sizeof(SECURITY_ATTRIBUTES);
>> sa.bInheritHandle = true;
>>
>> CreatePipe(&newstdin, &write_stdin, &sa, 0);
>> CreatePipe(&read_stdout, &newstdout, &sa, 0);
>>
>> GetStartupInfo(&si);
>> si.dwFlags = STARTF_USESTDHANDLES | STARTF_USESHOWWINDOW;
>> si.wShowWindow = SW_HIDE; // hide child application window
>> si.hStdOutput = newstdout; // use newstdout instead of STDOUT
>> si.hStdError = newstdout; // use newstdout instead of STDERR
>> si.hStdInput = newstdin; // use newstdin instead of STDIN
>>
>> if(0 == CreateProcess(
>> exe, NULL, NULL, NULL, true, CREATE_NEW_CONSOLE,
>> NULL, NULL, &si, &pi))
>> {
>> printf("\nCreateProcess() fails with error: %i", GetLastError());
>> return -1;
>> }
>>
>>
>> In case pipes are in blocking mode then the PeekNamedPipe() call can be
>> used to check for incoming data:
>>
>> if (0 == PeekNamedPipe(
>> read_stdout, buf, BUFSIZE - 1, &bread, &avail, NULL))
>> {
>> printf("\nPeekNamedPipe() fails with error: %i", GetLastError());
>> break;
>> }
>>
>> if (bread > 0)
>> {
>> // Data have arrived
>> }
>
> All looks good stuff - I'll try and get round to trying it out this weekend.
Ok, starting to look into this in detail. I was delayed from moving
over to using a Mercurial repository to track released VIM patches and
my own hacking around with the source. Progress wont be as fast as
Windows hacking is not my usual job - then again I hack VIM on WIndows
to learn ;-) More soon(ish).
Mike
--
When I want your help, I'll ask for it. Help?
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