+/////////////////////////////////////////////////////////////////////////////
+// Name: exec.cpp
+// Purpose: exec sample demonstrates wxExecute and related functions
+// Author: Vadim Zeitlin
+// Modified by:
+// Created: 15.01.00
+// RCS-ID: $Id$
+// Copyright: (c) Vadim Zeitlin
+// Licence: wxWindows licence
+/////////////////////////////////////////////////////////////////////////////
+
+// ============================================================================
+// declarations
+// ============================================================================
+
+// ----------------------------------------------------------------------------
+// headers
+// ----------------------------------------------------------------------------
+
+#ifdef __GNUG__
+ #pragma implementation "exec.cpp"
+ #pragma interface "exec.cpp"
+#endif
+
+// For compilers that support precompilation, includes "wx/wx.h".
+#include "wx/wxprec.h"
+
+#ifdef __BORLANDC__
+ #pragma hdrstop
+#endif
+
+// for all others, include the necessary headers (this file is usually all you
+// need because it includes almost all "standard" wxWindows headers
+#ifndef WX_PRECOMP
+ #include "wx/app.h"
+ #include "wx/frame.h"
+ #include "wx/utils.h"
+#endif
+
+#include "wx/process.h"
+
+// ----------------------------------------------------------------------------
+// private classes
+// ----------------------------------------------------------------------------
+
+// Define a new application type, each program should derive a class from wxApp
+class MyApp : public wxApp
+{
+public:
+ // override base class virtuals
+ // ----------------------------
+
+ // this one is called on application startup and is a good place for the app
+ // initialization (doing it here and not in the ctor allows to have an error
+ // return: if OnInit() returns false, the application terminates)
+ virtual bool OnInit();
+};
+
+// Define a new frame type: this is going to be our main frame
+class MyFrame : public wxFrame
+{
+public:
+ // ctor(s)
+ MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size);
+
+ // event handlers (these functions should _not_ be virtual)
+ void OnQuit(wxCommandEvent& event);
+
+ void OnSyncExec(wxCommandEvent& event);
+ void OnAsyncExec(wxCommandEvent& event);
+ void OnShell(wxCommandEvent& event);
+
+ void OnAbout(wxCommandEvent& event);
+
+private:
+ wxString m_cmdLast;
+
+ // any class wishing to process wxWindows events must use this macro
+ DECLARE_EVENT_TABLE()
+};
+
+// This is the handler for process termination events
+class MyProcess : public wxProcess
+{
+public:
+ MyProcess(wxFrame *parent, const wxString& cmd)
+ : wxProcess(parent), m_cmd(cmd)
+ {
+ m_parent = parent;
+ }
+
+ // instead of overriding this virtual function we might as well process the
+ // event from it in the frame class - this might be more convenient in some
+ // cases
+ virtual void OnTerminate(int pid, int status);
+
+private:
+ wxFrame *m_parent;
+ wxString m_cmd;
+};
+
+// ----------------------------------------------------------------------------
+// constants
+// ----------------------------------------------------------------------------
+
+// IDs for the controls and the menu commands
+enum
+{
+ // menu items
+ Exec_Quit = 100,
+ Exec_SyncExec = 200,
+ Exec_AsyncExec,
+ Exec_Shell,
+ Exec_About = 300
+};
+
+// ----------------------------------------------------------------------------
+// event tables and other macros for wxWindows
+// ----------------------------------------------------------------------------
+
+// the event tables connect the wxWindows events with the functions (event
+// handlers) which process them. It can be also done at run-time, but for the
+// simple menu events like this the static method is much simpler.
+BEGIN_EVENT_TABLE(MyFrame, wxFrame)
+ EVT_MENU(Exec_Quit, MyFrame::OnQuit)
+
+ EVT_MENU(Exec_SyncExec, MyFrame::OnSyncExec)
+ EVT_MENU(Exec_AsyncExec, MyFrame::OnAsyncExec)
+ EVT_MENU(Exec_Shell, MyFrame::OnShell)
+
+ EVT_MENU(Exec_About, MyFrame::OnAbout)
+END_EVENT_TABLE()
+
+// Create a new application object: this macro will allow wxWindows to create
+// the application object during program execution (it's better than using a
+// static object for many reasons) and also declares the accessor function
+// wxGetApp() which will return the reference of the right type (i.e. MyApp and
+// not wxApp)
+IMPLEMENT_APP(MyApp)
+
+// ============================================================================
+// implementation
+// ============================================================================
+
+// ----------------------------------------------------------------------------
+// the application class
+// ----------------------------------------------------------------------------
+
+// `Main program' equivalent: the program execution "starts" here
+bool MyApp::OnInit()
+{
+ // Create the main application window
+ MyFrame *frame = new MyFrame(_T("Exec wxWindows sample"),
+ wxDefaultPosition, wxSize(500, 140));
+
+ // Show it and tell the application that it's our main window
+ frame->Show(TRUE);
+ SetTopWindow(frame);
+
+ // success: wxApp::OnRun() will be called which will enter the main message
+ // loop and the application will run. If we returned FALSE here, the
+ // application would exit immediately.
+ return TRUE;
+}
+
+// ----------------------------------------------------------------------------
+// main frame
+// ----------------------------------------------------------------------------
+
+// frame constructor
+MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size)
+ : wxFrame((wxFrame *)NULL, -1, title, pos, size)
+{
+#ifdef __WXMAC__
+ // we need this in order to allow the about menu relocation, since ABOUT is
+ // not the default id of the about menu
+ wxApp::s_macAboutMenuItemId = Exec_About;
+#endif
+
+ // set the frame icon
+ SetIcon(wxICON(mondrian));
+
+ // create a menu bar
+ wxMenu *menuFile = new wxMenu(_T(""), wxMENU_TEAROFF);
+ menuFile->Append(Exec_Quit, _T("E&xit\tAlt-X"), _T("Quit this program"));
+
+ wxMenu *execMenu = new wxMenu;
+ execMenu->Append(Exec_SyncExec, _T("Sync &execution...\tCtrl-E"),
+ _T("Launch a program and return when it terminates"));
+ execMenu->Append(Exec_AsyncExec, _T("&Async execution...\tCtrl-A"),
+ _T("Launch a program and return immediately"));
+ execMenu->Append(Exec_Shell, _T("Execute &shell command...\tCtrl-S"),
+ _T("Launch a shell and execute a command in it"));
+
+ wxMenu *helpMenu = new wxMenu(_T(""), wxMENU_TEAROFF);
+ helpMenu->Append(Exec_About, _T("&About...\tF1"), _T("Show about dialog"));
+
+ // now append the freshly created menu to the menu bar...
+ wxMenuBar *menuBar = new wxMenuBar();
+ menuBar->Append(menuFile, _T("&File"));
+ menuBar->Append(execMenu, _T("&Exec"));
+ menuBar->Append(helpMenu, _T("&Help"));
+
+ // ... and attach this menu bar to the frame
+ SetMenuBar(menuBar);
+
+#if wxUSE_STATUSBAR
+ // create a status bar just for fun (by default with 1 pane only)
+ CreateStatusBar(2);
+ SetStatusText(_T("Welcome to wxWindows!"));
+#endif // wxUSE_STATUSBAR
+}
+
+
+// event handlers
+
+void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
+{
+ // TRUE is to force the frame to close
+ Close(TRUE);
+}
+
+void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event))
+{
+ wxMessageBox(_T("Exec sample\n© 2000 Vadim Zeitlin"),
+ _T("About Exec"), wxOK | wxICON_INFORMATION, this);
+}
+
+void MyFrame::OnSyncExec(wxCommandEvent& WXUNUSED(event))
+{
+ wxString cmd = wxGetTextFromUser(_T("Enter the command: "),
+ _T("Exec sample"),
+ m_cmdLast);
+
+ if ( !cmd )
+ return;
+
+ int code = wxExecute(cmd, TRUE /* sync */);
+ wxLogStatus(_T("Process '%s' terminated with exit code %d."),
+ cmd.c_str(), code);
+ m_cmdLast = cmd;
+}
+
+void MyFrame::OnAsyncExec(wxCommandEvent& WXUNUSED(event))
+{
+ wxString cmd = wxGetTextFromUser(_T("Enter the command: "),
+ _T("Exec sample"),
+ m_cmdLast);
+
+ if ( !cmd )
+ return;
+
+ wxProcess *process = new MyProcess(this, cmd);
+ if ( !wxExecute(cmd, FALSE /* async */, process) )
+ {
+ wxLogError(_T("Execution of '%s' failed."), cmd.c_str());
+
+ delete process;
+ }
+ else
+ {
+ m_cmdLast = cmd;
+ }
+}
+
+void MyFrame::OnShell(wxCommandEvent& WXUNUSED(event))
+{
+ wxString cmd = wxGetTextFromUser(_T("Enter the command: "),
+ _T("Exec sample"),
+ m_cmdLast);
+
+ if ( !cmd )
+ return;
+
+ int code = wxShell(cmd);
+ wxLogStatus(_T("Shell command '%s' terminated with exit code %d."),
+ cmd.c_str(), code);
+ m_cmdLast = cmd;
+}
+
+// ----------------------------------------------------------------------------
+// MyProcess
+// ----------------------------------------------------------------------------
+
+void MyProcess::OnTerminate(int pid, int status)
+{
+ wxLogStatus(m_parent, _T("Process %u ('%s') terminated with exit code %d."),
+ pid, m_cmd.c_str(), status);
+
+ // we're not needed any more
+ delete this;
+}
projects / wxWidgets.git / commitdiff
