X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/2edb0bdef6238c8c246b6978bc14828b7033d931..4f7202dd939538bc4bb0655ad6f746848fd2aabf:/docs/latex/wx/process.tex?ds=inline diff --git a/docs/latex/wx/process.tex b/docs/latex/wx/process.tex index f8475c9e63..95c907c979 100644 --- a/docs/latex/wx/process.tex +++ b/docs/latex/wx/process.tex @@ -1,6 +1,6 @@ \section{\class{wxProcess}}\label{wxprocess} -The objects of this class are used in conjunction with the +The objects of this class are used in conjunction with the \helpref{wxExecute}{wxexecute} function. When a wxProcess object is passed to wxExecute(), its \helpref{OnTerminate()}{wxprocessonterminate} virtual method is called when the process terminates. This allows the program to be @@ -15,10 +15,10 @@ library users should only delete those objects whose notifications have been processed (and call \helpref{Detach()}{wxprocessdetach} for others). wxProcess also supports IO redirection of the child process. For this, you have -to call its \helpref{Redirect}{wxprocessredirect} method before passing it to -\helpref{wxExecute}{wxexecute}. If the child process was launched successfully, -\helpref{GetInputStream}{wxprocessgetinputstream}, -\helpref{GetOutputStream}{wxprocessgetoutputstream} and +to call its \helpref{Redirect}{wxprocessredirect} method before passing it to +\helpref{wxExecute}{wxexecute}. If the child process was launched successfully, +\helpref{GetInputStream}{wxprocessgetinputstream}, +\helpref{GetOutputStream}{wxprocessgetoutputstream} and \helpref{GetErrorStream}{wxprocessgeterrorstream} can then be used to retrieve the streams corresponding to the child process standard output, input and error output respectively. @@ -45,6 +45,8 @@ for explicit destruction.} \func{}{wxProcess}{\param{wxEvtHandler *}{ parent = NULL}, \param{int}{ id = -1}} +\func{}{wxProcess}{\param{int }{flags}} + Constructs a process object. {\it id} is only used in the case you want to use wxWindows events. It identifies this object, or another window that will receive the event. @@ -53,12 +55,20 @@ If the {\it parent} parameter is different from NULL, it will receive a wxEVT\_END\_PROCESS notification event (you should insert EVT\_END\_PROCESS macro in the event table of the parent to handle it) with the given {\it id}. +The second constructor creates an object without any associated parent (and +hence no id neither) but allows to specify the {\it flags} which can have the +value of {\tt wxPROCESS\_DEFAULT} or {\tt wxPROCESS\_REDIRECT}. Specifying the +former value has no particular effect while using the latter one is equivalent +to calling \helpref{Redirect}{wxprocessredirect}. + \wxheading{Parameters} \docparam{parent}{The event handler parent.} \docparam{id}{id of an event.} +\docparam{flags}{either {\tt wxPROCESS\_DEFAULT} or {\tt wxPROCESS\_REDIRECT}} + \membersection{wxProcess::\destruct{wxProcess}} \func{}{\destruct{wxProcess}}{\void} @@ -82,7 +92,7 @@ Normally, a wxProcess object is deleted by its parent when it receives the notification about the process termination. However, it might happen that the parent object is destroyed before the external process is terminated (e.g. a window from which this external process was launched is closed by the user) -and in this case it {\bf should not delete} the wxProcess object, but +and in this case it {\bf should not delete} the wxProcess object, but {\bf should call Detach()} instead. After the wxProcess object is detached from its parent, no notification events will be sent to the parent and the object will delete itself upon reception of the process termination @@ -140,7 +150,7 @@ enum wxSignal \end{verbatim} {\tt wxSIGNONE}, {\tt wxSIGKILL} and {\tt wxSIGTERM} have the same meaning -under both Unix and Windows but all the other signals are equivalent to +under both Unix and Windows but all the other signals are equivalent to {\tt wxSIGTERM} under Windows. Returns the element of {\tt wxKillError} enum: @@ -184,6 +194,35 @@ It raises a wxWindows event when it isn't overridden. \docparam{status}{The exit code of the process.} +\membersection{wxProcess::Open}\label{wxprocessopen} + +\func{static wxProcess *}{Open}{\param{const wxString\& }{cmd} \param{int }{flags = wxEXEC\_ASYNC}} + +This static method replaces the standard {\tt popen()} function: it launches +the process specified by the {\it cmd} parameter and returns the wxProcess +object which can be used to retrieve the streams connected to the standard +input, output and error output of the child process. + +If the process couldn't be launched, {\tt NULL} is returned. Note that in any +case the returned pointer should {\bf not} be deleted, rather the process +object will be destroyed automatically when the child process terminates. This +does mean that the child process should be told to quit before the main program +exits to avoid memory leaks. + +\wxheading{Parameters} + +\docparam{cmd}{The command to execute, including optional arguments.} +\docparam{flags}{The flags to pass to \helpref{wxExecute}{wxexecute}. + NOTE: wxEXEC\_SYNC should not be used.} + +\wxheading{Return value} + +A pointer to new wxProcess object or {\tt NULL} on error. + +\wxheading{See also} + +\helpref{wxExecute}{wxexecute} + \membersection{wxProcess::Redirect}\label{wxprocessredirect} \func{void}{Redirect}{\void}