X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/985acf8734d61067c66b4812a9dd9da90d725851..96c9640205933ad0673d5af2c96af0816c50160c:/src/msw/evtloop.cpp diff --git a/src/msw/evtloop.cpp b/src/msw/evtloop.cpp index 48dfc76523..9734216483 100644 --- a/src/msw/evtloop.cpp +++ b/src/msw/evtloop.cpp @@ -1,12 +1,12 @@ /////////////////////////////////////////////////////////////////////////////// -// Name: msw/evtloop.cpp +// Name: src/msw/evtloop.cpp // Purpose: implements wxEventLoop for MSW // Author: Vadim Zeitlin // Modified by: // Created: 01.06.01 // RCS-ID: $Id$ // Copyright: (c) 2001 Vadim Zeitlin -// License: wxWindows licence +// Licence: wxWindows licence /////////////////////////////////////////////////////////////////////////////// // ============================================================================ @@ -24,26 +24,24 @@ #pragma hdrstop #endif +#include "wx/evtloop.h" + #ifndef WX_PRECOMP #if wxUSE_GUI #include "wx/window.h" #endif #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 - #include "wx/thread.h" - // define the list of MSG strutures WX_DECLARE_LIST(MSG, wxMsgList); @@ -81,8 +79,6 @@ bool wxMSWEventLoopBase::Pending() const 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 ) @@ -103,6 +99,52 @@ bool wxMSWEventLoopBase::GetNextMessage(WXMSG* msg) 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; +} + + #endif // wxUSE_BASE #if wxUSE_GUI @@ -293,6 +335,18 @@ bool wxGUIEventLoop::Dispatch() return true; } +int wxGUIEventLoop::DispatchTimeout(unsigned long timeout) +{ + MSG msg; + int rc = GetNextMessageTimeout(&msg, timeout); + if ( rc != 1 ) + return rc; + + ProcessMessage(&msg); + + return 1; +} + void wxGUIEventLoop::OnNextIteration() { #if wxUSE_THREADS @@ -305,16 +359,211 @@ void wxGUIEventLoop::WakeUp() ::PostMessage(NULL, WM_NULL, 0, 0); } -#else // !wxUSE_GUI -#if wxUSE_CONSOLE_EVENTLOOP +// ---------------------------------------------------------------------------- +// Yield to incoming messages +// ---------------------------------------------------------------------------- + +#include +WX_DEFINE_OBJARRAY(wxMSGArray); -void wxConsoleEventLoop::OnNextIteration() +bool wxGUIEventLoop::YieldFor(long eventsToProcess) { - if ( wxTheApp ) + // 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 + 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 + + 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 + + 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; + + case WM_TIMER: + processNow = (eventsToProcess & wxEVT_CATEGORY_TIMER) != 0; + break; + + 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; + } + } + + // 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); + } + } + + // if there are pending events, we must process them. + if (wxTheApp) wxTheApp->ProcessPendingEvents(); + + // put back unprocessed events in the queue + DWORD id = GetCurrentThreadId(); + for (size_t i=0; i