samples/thread/test.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        test.cpp
   3 // Purpose:     wxWindows thread sample
   4 // Author:      Julian Smart(minimal)/Guilhem Lavaux(thread test)
   5 // Modified by:
   6 // Created:     06/16/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart, Markus Holzem, Guilhem Lavaux
   9 // Licence:     wxWindows license
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13 #pragma implementation "test.cpp"
  14 #pragma interface "test.cpp"
  15 #endif
  16
  17 // For compilers that support precompilation, includes "wx/wx.h".
  18 #include "wx/wxprec.h"
  19
  20 #ifdef __BORLANDC__
  21 #pragma hdrstop
  22 #endif
  23
  24 #ifndef WX_PRECOMP
  25 #include "wx/wx.h"
  26 #endif
  27
  28 #include "wx/thread.h"
  29 #include "wx/dynarray.h"
  30
  31 // Define a new application type
  32 class MyApp: public wxApp
  33 {
  34  public:
  35     bool OnInit(void);
  36 };
  37
  38 wxMutex text_mutex;
  39
  40 WX_DEFINE_ARRAY(wxThread *,wxArrayThread);
  41
  42 // Define a new frame type
  43 class MyFrame: public wxFrame
  44 {
  45  public:
  46     MyFrame(wxFrame *frame, char *title, int x, int y, int w, int h);
  47
  48  public:
  49     void OnQuit(wxCommandEvent& event);
  50     void OnAbout(wxCommandEvent& event);
  51     void OnStartThread(wxCommandEvent& event);
  52     void OnStopThread(wxCommandEvent& event);
  53     void OnPauseThread(wxCommandEvent& event);
  54     bool OnClose(void) { return TRUE; }
  55
  56  public:
  57    wxArrayThread m_threads;
  58    wxTextCtrl *m_txtctrl;
  59
  60    DECLARE_EVENT_TABLE()
  61 };
  62
  63 class MyThread: public wxThread
  64 {
  65  public:
  66     MyThread(MyFrame *frame);
  67
  68     void *Entry();
  69  public:
  70     MyFrame *m_frame;
  71 };
  72
  73 MyThread::MyThread(MyFrame *frame)
  74   : wxThread()
  75 {
  76   m_frame = frame;
  77 }
  78
  79 void *MyThread::Entry()
  80 {
  81   wxString text;
  82
  83   text.Printf("Thread 0x%x: Hello !\n", GetID());
  84   DeferDestroy(TRUE);
  85
  86   while (1) {
  87     TestDestroy();
  88     text_mutex.Lock();
  89     m_frame->m_txtctrl->WriteText(text);
  90     text_mutex.Unlock();
  91     wxSleep(1);
  92   }
  93
  94   return NULL;
  95 }
  96
  97 // ID for the menu commands
  98 #define TEST_QUIT         1
  99 #define TEST_TEXT         101
 100 #define TEST_ABOUT        102
 101 #define TEST_START_THREAD 103
 102 #define TEST_STOP_THREAD  104
 103 #define TEST_PAUSE_THREAD 105
 104
 105 BEGIN_EVENT_TABLE(MyFrame, wxFrame)
 106         EVT_MENU(TEST_QUIT, MyFrame::OnQuit)
 107         EVT_MENU(TEST_ABOUT, MyFrame::OnAbout)
 108         EVT_MENU(TEST_START_THREAD, MyFrame::OnStartThread)
 109         EVT_MENU(TEST_STOP_THREAD, MyFrame::OnStopThread)
 110         EVT_MENU(TEST_PAUSE_THREAD, MyFrame::OnPauseThread)
 111 END_EVENT_TABLE()
 112
 113 // Create a new application object
 114 IMPLEMENT_APP   (MyApp)
 115
 116 // `Main program' equivalent, creating windows and returning main app frame
 117 bool MyApp::OnInit(void)
 118 {
 119   // Create the main frame window
 120   MyFrame *frame = new MyFrame((wxFrame *) NULL, (char *) "Minimal wxWindows App", 50, 50, 450, 340);
 121
 122   // Make a menubar
 123   wxMenu *file_menu = new wxMenu;
 124
 125   file_menu->Append(TEST_ABOUT, "&About");
 126   file_menu->Append(TEST_QUIT, "E&xit");
 127   wxMenuBar *menu_bar = new wxMenuBar;
 128   menu_bar->Append(file_menu, "&File");
 129
 130   wxMenu *thread_menu = new wxMenu;
 131   thread_menu->Append(TEST_START_THREAD, "Start a new thread");
 132   thread_menu->Append(TEST_STOP_THREAD, "Stop a running thread");
 133   thread_menu->Append(TEST_PAUSE_THREAD, "Pause a running thread");
 134   menu_bar->Append(thread_menu, "Thread");
 135   frame->SetMenuBar(menu_bar);
 136
 137   // Make a panel with a message
 138   wxPanel *panel = new wxPanel(frame, -1, wxPoint(0, 0), wxSize(400, 200), wxTAB_TRAVERSAL);
 139
 140   frame->m_txtctrl = new wxTextCtrl(panel, -1, "", wxPoint(10, 10), wxSize(390, 190),
 141                            wxTE_MULTILINE);
 142
 143   // Show the frame
 144   frame->Show(TRUE);
 145
 146   SetTopWindow(frame);
 147
 148   return TRUE;
 149 }
 150
 151 // My frame constructor
 152 MyFrame::MyFrame(wxFrame *frame, char *title, int x, int y, int w, int h):
 153   wxFrame(frame, -1, title, wxPoint(x, y), wxSize(w, h))
 154 {}
 155
 156 void MyFrame::OnStartThread(wxCommandEvent& WXUNUSED(event) )
 157 {
 158   MyThread *thread = new MyThread(this);
 159
 160   thread->Create();
 161
 162   m_threads.Add(thread);
 163 }
 164
 165 void MyFrame::OnStopThread(wxCommandEvent& WXUNUSED(event) )
 166 {
 167   int no_thrd = m_threads.Count()-1;
 168
 169   if (no_thrd < 0)
 170     return;
 171
 172   delete (m_threads[no_thrd]);
 173   m_threads.Remove(no_thrd);
 174 }
 175
 176 void MyFrame::OnPauseThread(wxCommandEvent& WXUNUSED(event) )
 177 {}
 178
 179 void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event) )
 180 {
 181   unsigned int i;
 182   for (i=0;i<m_threads.Count();i++)
 183     delete (m_threads[i]);
 184   Close(TRUE);
 185 }
 186
 187 void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event) )
 188 {
 189   wxMessageDialog dialog(this, "wxThread sample (based on minimal)\nJulian Smart and Guilhem Lavaux",
 190         "About wxThread sample", wxYES_NO|wxCANCEL);
 191
 192   dialog.ShowModal();
 193 }
 194
 195