///////////////////////////////////////////////////////////////////////////////
-// Name: msw/evtloop.cpp
-// Purpose: implements wxEventLoop for MSW
+// Name: src/msw/evtloop.cpp
+// Purpose: implements wxEventLoop for wxMSW port
// Author: Vadim Zeitlin
// Modified by:
// Created: 01.06.01
// RCS-ID: $Id$
// Copyright: (c) 2001 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
-// License: wxWindows licence
+// Licence: wxWindows licence
///////////////////////////////////////////////////////////////////////////////
// ============================================================================
#pragma hdrstop
#endif
+#include "wx/evtloop.h"
+
#ifndef WX_PRECOMP
- #if wxUSE_GUI
- #include "wx/window.h"
- #endif
+ #include "wx/window.h"
#include "wx/app.h"
+ #include "wx/log.h"
#endif //WX_PRECOMP
-#include "wx/evtloop.h"
#include "wx/thread.h"
#include "wx/except.h"
-#include "wx/ptr_scpd.h"
#include "wx/msw/private.h"
+#include "wx/scopeguard.h"
-#if wxUSE_GUI
- #include "wx/tooltip.h"
- #if wxUSE_THREADS
- // define the list of MSG strutures
- WX_DECLARE_LIST(MSG, wxMsgList);
-
- #include "wx/listimpl.cpp"
-
- WX_DEFINE_LIST(wxMsgList)
- #endif // wxUSE_THREADS
-#endif //wxUSE_GUI
-
-#if wxUSE_BASE
-
-// ============================================================================
-// wxMSWEventLoopBase implementation
-// ============================================================================
-
-// ----------------------------------------------------------------------------
-// ctor/dtor
-// ----------------------------------------------------------------------------
-
-wxMSWEventLoopBase::wxMSWEventLoopBase()
-{
- m_shouldExit = false;
- m_exitcode = 0;
-}
-
-// ----------------------------------------------------------------------------
-// wxEventLoop message processing dispatching
-// ----------------------------------------------------------------------------
-
-bool wxMSWEventLoopBase::Pending() const
-{
- MSG msg;
- return ::PeekMessage(&msg, 0, 0, 0, PM_NOREMOVE) != 0;
-}
-
-bool wxMSWEventLoopBase::GetNextMessage(WXMSG* msg)
-{
- wxCHECK_MSG( IsRunning(), false, _T("can't get messages if not running") );
-
- const BOOL rc = ::GetMessage(msg, NULL, 0, 0);
-
- if ( rc == 0 )
- {
- // got WM_QUIT
- return false;
- }
-
- if ( rc == -1 )
- {
- // should never happen, but let's test for it nevertheless
- wxLogLastError(wxT("GetMessage"));
-
- // still break from the loop
- return false;
- }
-
- return true;
-}
-
-int wxMSWEventLoopBase::GetNextMessageTimeout(WXMSG *msg, unsigned long timeout)
-{
- // MsgWaitForMultipleObjects() won't notice any input which was already
- // examined (e.g. using PeekMessage()) but not yet removed from the queue
- // so we need to remove any immediately messages manually
- //
- // NB: using MsgWaitForMultipleObjectsEx() could simplify the code here but
- // it is not available in very old Windows versions
- if ( !::PeekMessage(msg, 0, 0, 0, PM_REMOVE) )
- {
- // we use this function just in order to not block longer than the
- // given timeout, so we don't pass any handles to it at all
- DWORD rc = ::MsgWaitForMultipleObjects
- (
- 0, NULL,
- FALSE,
- timeout,
- QS_ALLINPUT
- );
-
- switch ( rc )
- {
- default:
- wxLogDebug("unexpected MsgWaitForMultipleObjects() return "
- "value %lu", rc);
- // fall through
-
- case WAIT_TIMEOUT:
- return -1;
-
- case WAIT_OBJECT_0:
- if ( !::PeekMessage(msg, 0, 0, 0, PM_REMOVE) )
- {
- // somehow it may happen that MsgWaitForMultipleObjects()
- // returns true but there are no messages -- just treat it
- // the same as timeout then
- return -1;
- }
- break;
- }
- }
-
- return msg->message != WM_QUIT;
-}
-
+#include "wx/tooltip.h"
+#if wxUSE_THREADS
+ // define the list of MSG strutures
+ WX_DECLARE_LIST(MSG, wxMsgList);
-#endif // wxUSE_BASE
+ #include "wx/listimpl.cpp"
-#if wxUSE_GUI
+ WX_DEFINE_LIST(wxMsgList)
+#endif // wxUSE_THREADS
// ============================================================================
// GUI wxEventLoop implementation
::PostMessage(NULL, WM_NULL, 0, 0);
}
-#else // !wxUSE_GUI
-#if wxUSE_CONSOLE_EVENTLOOP
+// ----------------------------------------------------------------------------
+// Yield to incoming messages
+// ----------------------------------------------------------------------------
-void wxConsoleEventLoop::OnNextIteration()
-{
- if ( wxTheApp )
- wxTheApp->ProcessPendingEvents();
-}
+#include <wx/arrimpl.cpp>
+WX_DEFINE_OBJARRAY(wxMSGArray);
-void wxConsoleEventLoop::WakeUp()
+bool wxGUIEventLoop::YieldFor(long eventsToProcess)
{
+ // set the flag and don't forget to reset it before returning
+ m_isInsideYield = true;
+ m_eventsToProcessInsideYield = eventsToProcess;
+
+ wxON_BLOCK_EXIT_SET(m_isInsideYield, false);
+
+#if wxUSE_LOG
+ // disable log flushing from here because a call to wxYield() shouldn't
+ // normally result in message boxes popping up &c
+ wxLog::Suspend();
+
+ // ensure the logs will be flashed again when we exit
+ wxON_BLOCK_EXIT0(wxLog::Resume);
+#endif // wxUSE_LOG
+
+ // we don't want to process WM_QUIT from here - it should be processed in
+ // the main event loop in order to stop it
+ MSG msg;
+ int nPaintsReceived = 0;
+ while ( PeekMessage(&msg, (HWND)0, 0, 0, PM_NOREMOVE) &&
+ msg.message != WM_QUIT )
+ {
#if wxUSE_THREADS
- wxWakeUpMainThread();
+ wxMutexGuiLeaveOrEnter();
+#endif // wxUSE_THREADS
+
+ if (msg.message == WM_PAINT)
+ {
+ // NOTE: WM_PAINTs are categorized as wxEVT_CATEGORY_UI
+ if ((eventsToProcess & wxEVT_CATEGORY_UI) == 0)
+ {
+ // this msg is not going to be dispatched...
+ // however WM_PAINT is special: until there are damaged
+ // windows, Windows will keep sending it forever!
+ if (nPaintsReceived > 10)
+ {
+ // we got 10 WM_PAINT consecutive messages...
+ // we must have reached the tail of the message queue:
+ // we're now getting _only_ WM_PAINT events and this will
+ // continue forever (since we don't dispatch them
+ // because of the user-specified eventsToProcess mask)...
+ // break out of this loop!
+ break;
+ }
+ else
+ nPaintsReceived++;
+ }
+ //else: we're going to dispatch it below,
+ // so we don't need to take any special action
+ }
+ else
+ {
+ // reset the counter of consecutive WM_PAINT messages received:
+ nPaintsReceived = 0;
+ }
+
+ // choose a wxEventCategory for this Windows message
+ bool processNow;
+ switch (msg.message)
+ {
+#if !defined(__WXWINCE__)
+ case WM_NCMOUSEMOVE:
+
+ case WM_NCLBUTTONDOWN:
+ case WM_NCLBUTTONUP:
+ case WM_NCLBUTTONDBLCLK:
+ case WM_NCRBUTTONDOWN:
+ case WM_NCRBUTTONUP:
+ case WM_NCRBUTTONDBLCLK:
+ case WM_NCMBUTTONDOWN:
+ case WM_NCMBUTTONUP:
+ case WM_NCMBUTTONDBLCLK:
#endif
-}
-void wxConsoleEventLoop::ProcessMessage(WXMSG *msg)
-{
- if ( msg->message == WM_TIMER )
- {
- TIMERPROC proc = (TIMERPROC)msg->lParam;
- if ( proc )
- (*proc)(NULL, 0, msg->wParam, 0);
- }
- else
- {
- ::DispatchMessage(msg);
- }
-}
+ case WM_KEYDOWN:
+ case WM_KEYUP:
+ case WM_CHAR:
+ case WM_DEADCHAR:
+ case WM_SYSKEYDOWN:
+ case WM_SYSKEYUP:
+ case WM_SYSCHAR:
+ case WM_SYSDEADCHAR:
+#ifdef WM_UNICHAR
+ case WM_UNICHAR:
+#endif
+ case WM_HOTKEY:
+ case WM_IME_STARTCOMPOSITION:
+ case WM_IME_ENDCOMPOSITION:
+ case WM_IME_COMPOSITION:
+ case WM_COMMAND:
+ case WM_SYSCOMMAND:
+
+ case WM_IME_SETCONTEXT:
+ case WM_IME_NOTIFY:
+ case WM_IME_CONTROL:
+ case WM_IME_COMPOSITIONFULL:
+ case WM_IME_SELECT:
+ case WM_IME_CHAR:
+ case WM_IME_KEYDOWN:
+ case WM_IME_KEYUP:
+
+#if !defined(__WXWINCE__)
+ case WM_MOUSEHOVER:
+ case WM_MOUSELEAVE:
+#endif
+#ifdef WM_NCMOUSELEAVE
+ case WM_NCMOUSELEAVE:
+#endif
-bool wxConsoleEventLoop::Dispatch()
-{
- MSG msg;
- if ( !GetNextMessage(&msg) )
- return false;
+ case WM_CUT:
+ case WM_COPY:
+ case WM_PASTE:
+ case WM_CLEAR:
+ case WM_UNDO:
+
+ case WM_MOUSEMOVE:
+ case WM_LBUTTONDOWN:
+ case WM_LBUTTONUP:
+ case WM_LBUTTONDBLCLK:
+ case WM_RBUTTONDOWN:
+ case WM_RBUTTONUP:
+ case WM_RBUTTONDBLCLK:
+ case WM_MBUTTONDOWN:
+ case WM_MBUTTONUP:
+ case WM_MBUTTONDBLCLK:
+ case WM_MOUSEWHEEL:
+ processNow = (eventsToProcess & wxEVT_CATEGORY_USER_INPUT) != 0;
+ break;
- ProcessMessage(&msg);
+ case WM_TIMER:
+ processNow = (eventsToProcess & wxEVT_CATEGORY_TIMER) != 0;
+ break;
- return !m_shouldExit;
-}
+ default:
+ if (msg.message < WM_USER)
+ {
+ // 0;WM_USER-1 is the range of message IDs reserved for use
+ // by the system.
+ // there are too many of these types of messages to handle
+ // them in this switch
+ processNow = (eventsToProcess & wxEVT_CATEGORY_UI) != 0;
+ }
+ else
+ {
+ // Process all the unknown messages. We must do it because
+ // failure to process some of them can be fatal, e.g. if we
+ // don't dispatch WM_APP+2 then embedded IE ActiveX
+ // controls don't work any more, see #14027. And there may
+ // be more examples like this, so dispatch all unknown
+ // messages immediately to be safe.
+ processNow = true;
+ }
+ }
-int wxConsoleEventLoop::DispatchTimeout(unsigned long timeout)
-{
- MSG msg;
- int rc = GetNextMessageTimeout(&msg, timeout);
- if ( rc != 1 )
- return rc;
+ // should we process this event now?
+ if ( processNow )
+ {
+ if ( !wxTheApp->Dispatch() )
+ break;
+ }
+ else
+ {
+ // remove the message and store it
+ ::GetMessage(&msg, NULL, 0, 0);
+ m_arrMSG.Add(msg);
+ }
+ }
- ProcessMessage(&msg);
+ // if there are pending events, we must process them.
+ if (wxTheApp)
+ wxTheApp->ProcessPendingEvents();
- return !m_shouldExit;
-}
+ // put back unprocessed events in the queue
+ DWORD id = GetCurrentThreadId();
+ for (size_t i=0; i<m_arrMSG.GetCount(); i++)
+ {
+ PostThreadMessage(id, m_arrMSG[i].message,
+ m_arrMSG[i].wParam, m_arrMSG[i].lParam);
+ }
-#endif // wxUSE_CONSOLE_EVENTLOOP
+ m_arrMSG.Clear();
-#endif //wxUSE_GUI
+ return true;
+}
projects / wxWidgets.git / blobdiff