///////////////////////////////////////////////////////////////////////////////
-// 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
///////////////////////////////////////////////////////////////////////////////
// ============================================================================
#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/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)
-{
- 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
// 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 (msg.message == WM_PAINT)
{
- // WM_PAINT messages are the last ones of the queue...
- break;
+ // 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
- wxEventCategory cat;
+ bool processNow;
switch (msg.message)
{
+#if !defined(__WXWINCE__)
case WM_NCMOUSEMOVE:
+
case WM_NCLBUTTONDOWN:
case WM_NCLBUTTONUP:
case WM_NCLBUTTONDBLCLK:
case WM_NCMBUTTONDOWN:
case WM_NCMBUTTONUP:
case WM_NCMBUTTONDBLCLK:
+#endif
case WM_KEYDOWN:
case WM_KEYUP:
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
- case WM_MOUSELEAVE:
case WM_CUT:
case WM_COPY:
case WM_MBUTTONUP:
case WM_MBUTTONDBLCLK:
case WM_MOUSEWHEEL:
- cat = wxEVT_CATEGORY_USER_INPUT;
+ processNow = (eventsToProcess & wxEVT_CATEGORY_USER_INPUT) != 0;
break;
case WM_TIMER:
- cat = wxEVT_CATEGORY_TIMER;
+ processNow = (eventsToProcess & wxEVT_CATEGORY_TIMER) != 0;
break;
default:
{
// 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
- cat = wxEVT_CATEGORY_UI;
+ processNow = (eventsToProcess & wxEVT_CATEGORY_UI) != 0;
}
else
- cat = wxEVT_CATEGORY_UNKNOWN;
+ {
+ // 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;
+ }
}
// should we process this event now?
- if (cat & eventsToProcess)
+ if ( processNow )
{
if ( !wxTheApp->Dispatch() )
break;
return true;
}
-
-
-#else // !wxUSE_GUI
-
-
-// ============================================================================
-// wxConsoleEventLoop implementation
-// ============================================================================
-
-#if wxUSE_CONSOLE_EVENTLOOP
-
-void wxConsoleEventLoop::WakeUp()
-{
-#if wxUSE_THREADS
- wxWakeUpMainThread();
-#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);
- }
-}
-
-bool wxConsoleEventLoop::Dispatch()
-{
- MSG msg;
- if ( !GetNextMessage(&msg) )
- return false;
-
- ProcessMessage(&msg);
-
- return !m_shouldExit;
-}
-
-int wxConsoleEventLoop::DispatchTimeout(unsigned long timeout)
-{
- MSG msg;
- int rc = GetNextMessageTimeout(&msg, timeout);
- if ( rc != 1 )
- return rc;
-
- ProcessMessage(&msg);
-
- return !m_shouldExit;
-}
-
-#endif // wxUSE_CONSOLE_EVENTLOOP
-
-#endif //wxUSE_GUI
projects / wxWidgets.git / blobdiff