// Created: 06/16/98
// RCS-ID: $Id$
// Copyright: (c) Julian Smart, Markus Holzem, Guilhem Lavaux
-// Licence: wxWindows license
+// Licence: wxWindows license
/////////////////////////////////////////////////////////////////////////////
#ifdef __GNUG__
#include "wx/wxprec.h"
#ifdef __BORLANDC__
-#pragma hdrstop
+ #pragma hdrstop
#endif
#ifndef WX_PRECOMP
-#include "wx/wx.h"
+ #include "wx/wx.h"
#endif
+#if !wxUSE_THREADS
+ #error "This sample requires thread support!"
+#endif // wxUSE_THREADS
+
#include "wx/thread.h"
#include "wx/dynarray.h"
+#include "wx/time.h"
// Define a new application type
class MyApp: public wxApp
public:
// ctor
MyFrame(wxFrame *frame, char *title, int x, int y, int w, int h);
-
+
// operations
void WriteText(const wxString& text) { m_txtctrl->WriteText(text); }
void OnResumeThread(wxCommandEvent& event);
void OnSize(wxSizeEvent &event);
- bool OnClose(void) { return TRUE; }
-
+ void OnIdle(wxIdleEvent &event);
+ bool OnClose() { return TRUE; }
+
public:
wxArrayThread m_threads;
private:
wxTextCtrl *m_txtctrl;
-
+
DECLARE_EVENT_TABLE()
};
{
public:
MyThread(MyFrame *frame);
-
- void *Entry();
+
+ // thread execution starts here
+ virtual void *Entry();
+
+ // write something to the text control
+ void WriteText(const wxString& text);
public:
size_t m_count;
m_frame = frame;
}
+void MyThread::WriteText(const wxString& text)
+{
+ wxString msg;
+ msg << wxTime().FormatTime() << ": " << text;
+
+ // before doing any GUI calls we must ensure that this thread is the only
+ // one doing it!
+ wxMutexGuiEnter();
+ m_frame->WriteText(msg);
+ wxMutexGuiLeave();
+}
+
void *MyThread::Entry()
{
wxString text;
-
+
DeferDestroy(TRUE);
-
- while (1) {
- TestDestroy();
- wxMutexGuiEnter();
- text.Printf("[%u] Thread 0x%x here.\n", ++m_count, GetID());
- m_frame->WriteText(text);
+ text.Printf("Thread 0x%x started.\n", GetID());
+ WriteText(text);
+
+ for ( m_count = 0; m_count < 20; m_count++ )
+ {
+ // check if we were asked to exit
+ if ( TestDestroy() )
+ break;
+
+ text.Printf("[%u] Thread 0x%x here.\n", m_count, GetID());
+ WriteText(text);
- wxMutexGuiLeave();
wxSleep(1);
}
-
+
+ text.Printf("Thread 0x%x finished.\n", GetID());
+ WriteText(text);
+
return NULL;
}
// ID for the menu commands
-#define TEST_QUIT 1
-#define TEST_TEXT 101
-#define TEST_ABOUT 102
-#define TEST_START_THREAD 103
-#define TEST_STOP_THREAD 104
-#define TEST_PAUSE_THREAD 105
-#define TEST_RESUME_THREAD 106
+enum
+{
+ TEST_QUIT = 1,
+ TEST_TEXT = 101,
+ TEST_ABOUT = 102,
+ TEST_START_THREAD = 103,
+ TEST_STOP_THREAD = 104,
+ TEST_PAUSE_THREAD = 105,
+ TEST_RESUME_THREAD = 106
+};
BEGIN_EVENT_TABLE(MyFrame, wxFrame)
EVT_MENU(TEST_QUIT, MyFrame::OnQuit)
EVT_MENU(TEST_RESUME_THREAD, MyFrame::OnResumeThread)
EVT_SIZE(MyFrame::OnSize)
+
+ EVT_IDLE(MyFrame::OnIdle)
END_EVENT_TABLE()
// Create a new application object
-IMPLEMENT_APP (MyApp)
+IMPLEMENT_APP (MyApp)
// `Main program' equivalent, creating windows and returning main app frame
-bool MyApp::OnInit(void)
+bool MyApp::OnInit()
{
// Create the main frame window
- MyFrame *frame = new MyFrame((wxFrame *) NULL, "wxWindows thread sample",
- 50, 50, 450, 340);
-
+ MyFrame *frame = new MyFrame((wxFrame *)NULL, "", 50, 50, 450, 340);
+
// Make a menubar
wxMenu *file_menu = new wxMenu;
-
+
file_menu->Append(TEST_ABOUT, "&About");
file_menu->Append(TEST_QUIT, "E&xit");
wxMenuBar *menu_bar = new wxMenuBar;
menu_bar->Append(file_menu, "&File");
-
+
wxMenu *thread_menu = new wxMenu;
- thread_menu->Append(TEST_START_THREAD, "Start a new thread");
- thread_menu->Append(TEST_STOP_THREAD, "Stop a running thread");
+ thread_menu->Append(TEST_START_THREAD, "&Start a new thread");
+ thread_menu->Append(TEST_STOP_THREAD, "S&top a running thread");
thread_menu->AppendSeparator();
- thread_menu->Append(TEST_PAUSE_THREAD, "Pause a running thread");
- thread_menu->Append(TEST_RESUME_THREAD, "Resume suspended thread");
- menu_bar->Append(thread_menu, "Thread");
+ thread_menu->Append(TEST_PAUSE_THREAD, "&Pause a running thread");
+ thread_menu->Append(TEST_RESUME_THREAD, "&Resume suspended thread");
+ menu_bar->Append(thread_menu, "&Thread");
frame->SetMenuBar(menu_bar);
-
+
// Show the frame
frame->Show(TRUE);
-
+
SetTopWindow(frame);
-
+
return TRUE;
}
: wxFrame(frame, -1, title, wxPoint(x, y), wxSize(w, h))
{
wxPanel *panel = new wxPanel(this, -1, wxPoint(0, 0), wxSize(400, 200),
- wxTAB_TRAVERSAL );
-
+ wxTAB_TRAVERSAL);
+
m_txtctrl = new wxTextCtrl(panel, -1, "", wxPoint(10,30), wxSize(390, 190),
wxTE_MULTILINE);
void MyFrame::OnStartThread(wxCommandEvent& WXUNUSED(event) )
{
MyThread *thread = new MyThread(this);
-
+
thread->Create();
-
+
m_threads.Add(thread);
}
void MyFrame::OnStopThread(wxCommandEvent& WXUNUSED(event) )
{
int no_thrd = m_threads.Count()-1;
-
+
if (no_thrd < 0)
return;
-
- delete (m_threads[no_thrd]);
+
+ delete m_threads[no_thrd];
m_threads.Remove(no_thrd);
}
void MyFrame::OnResumeThread(wxCommandEvent& WXUNUSED(event) )
{
- // resume first suspended thread
+ // resume first suspended thread
size_t n = 0;
while ( n < m_threads.Count() && m_threads[n]->IsPaused() )
n--;
-
+
if ( n < 0 )
wxLogError("No thread to pause!");
else
void MyFrame::OnPauseThread(wxCommandEvent& WXUNUSED(event) )
{
- // pause last running thread
+ // pause last running thread
int n = m_threads.Count() - 1;
while ( n >= 0 && !m_threads[n]->IsRunning() )
n--;
-
+
if ( n < 0 )
wxLogError("No thread to pause!");
else
m_threads[n]->Pause();
}
-void MyFrame::OnSize(wxSizeEvent& event )
+// set the frame title indicating the current number of threads
+void MyFrame::OnIdle(wxIdleEvent &event)
+{
+ size_t nRunning = 0,
+ nCount = m_threads.Count();
+ for ( size_t n = 0; n < nCount; n++ )
+ {
+ if ( m_threads[n]->IsRunning() )
+ nRunning++;
+ }
+
+ wxString title;
+ title.Printf("wxWindows thread sample (%u threads, %u running).",
+ nCount, nRunning);
+ SetTitle(title);
+}
+
+void MyFrame::OnSize(wxSizeEvent& event)
{
wxFrame::OnSize(event);
-
+
wxSize size( GetClientSize() );
-
+
m_txtctrl->SetSize( 10, 30, size.x-20, size.y-40 );
}
void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event) )
{
- unsigned int i;
- for (i=0;i<m_threads.Count();i++)
- delete (m_threads[i]);
+ for ( size_t i = 0; i < m_threads.Count(); i++ )
+ delete m_threads[i];
+
Close(TRUE);
}
void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event) )
{
- wxMessageDialog dialog(this, "wxThread sample (based on minimal)\nJulian Smart and Guilhem Lavaux",
- "About wxThread sample", wxYES_NO|wxCANCEL);
-
+ wxMessageDialog dialog(this, "wxThread sample (based on minimal)\n"
+ "Julian Smart and Guilhem Lavaux",
+ "About wxThread sample",
+ wxOK | wxICON_INFORMATION);
+
dialog.ShowModal();
}
projects / wxWidgets.git / blobdiff