missing commit

[wxWidgets.git] / src / msw / evtloop.cpp

diff --git a/src/msw/evtloop.cpp b/src/msw/evtloop.cpp
index 5c5be481cf26ed0641c67b83f4601f1edacd727c..eb97f85bab7aa310e42551120f21b7a324cac0a3 100644 (file)
--- a/src/msw/evtloop.cpp
+++ b/src/msw/evtloop.cpp
@@ -1,12 +1,12 @@
 ///////////////////////////////////////////////////////////////////////////////
 ///////////////////////////////////////////////////////////////////////////////

-// 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>
 // 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

 ///////////////////////////////////////////////////////////////////////////////
 
 // ============================================================================
 ///////////////////////////////////////////////////////////////////////////////
 
 // ============================================================================


@@ -27,9 +27,7 @@
 #include "wx/evtloop.h"
 
 #ifndef WX_PRECOMP
 #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/app.h"
     #include "wx/log.h"
 #endif //WX_PRECOMP


@@ -39,115 +37,15 @@
 #include "wx/msw/private.h"
 #include "wx/scopeguard.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)
-{
-    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
 
 // ============================================================================
 // GUI wxEventLoop implementation


@@ -387,6 +285,7 @@ bool wxGUIEventLoop::YieldFor(long eventsToProcess)
     // 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;
     // 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 )
     {
     while ( PeekMessage(&msg, (HWND)0, 0, 0, PM_NOREMOVE) &&
             msg.message != WM_QUIT )
     {


@@ -396,15 +295,41 @@ bool wxGUIEventLoop::YieldFor(long eventsToProcess)
 
         if (msg.message == WM_PAINT)
         {
 
         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
         }
 
         // choose a wxEventCategory for this Windows message

-        wxEventCategory cat;
+        bool processNow;

         switch (msg.message)
         {
         switch (msg.message)
         {

+#if !defined(__WXWINCE__)

             case WM_NCMOUSEMOVE:
             case WM_NCMOUSEMOVE:

+

             case WM_NCLBUTTONDOWN:
             case WM_NCLBUTTONUP:
             case WM_NCLBUTTONDBLCLK:
             case WM_NCLBUTTONDOWN:
             case WM_NCLBUTTONUP:
             case WM_NCLBUTTONDBLCLK:


@@ -414,6 +339,7 @@ bool wxGUIEventLoop::YieldFor(long eventsToProcess)
             case WM_NCMBUTTONDOWN:
             case WM_NCMBUTTONUP:
             case WM_NCMBUTTONDBLCLK:
             case WM_NCMBUTTONDOWN:
             case WM_NCMBUTTONUP:
             case WM_NCMBUTTONDBLCLK:

+#endif

 
             case WM_KEYDOWN:
             case WM_KEYUP:
 
             case WM_KEYDOWN:
             case WM_KEYUP:


@@ -442,11 +368,13 @@ bool wxGUIEventLoop::YieldFor(long eventsToProcess)
             case WM_IME_KEYDOWN:
             case WM_IME_KEYUP:
 
             case WM_IME_KEYDOWN:
             case WM_IME_KEYUP:
 

+#if !defined(__WXWINCE__)

             case WM_MOUSEHOVER:
             case WM_MOUSEHOVER:

+            case WM_MOUSELEAVE:
+#endif

 #ifdef WM_NCMOUSELEAVE
             case WM_NCMOUSELEAVE:
 #endif
 #ifdef WM_NCMOUSELEAVE
             case WM_NCMOUSELEAVE:
 #endif

-            case WM_MOUSELEAVE:

 
             case WM_CUT:
             case WM_COPY:
 
             case WM_CUT:
             case WM_COPY:


@@ -465,11 +393,11 @@ bool wxGUIEventLoop::YieldFor(long eventsToProcess)
             case WM_MBUTTONUP:
             case WM_MBUTTONDBLCLK:
             case WM_MOUSEWHEEL:
             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:
                 break;
 
             case WM_TIMER:

-                cat = wxEVT_CATEGORY_TIMER;
+                processNow = (eventsToProcess & wxEVT_CATEGORY_TIMER) != 0;

                 break;
 
             default:
                 break;
 
             default:


@@ -477,17 +405,24 @@ bool wxGUIEventLoop::YieldFor(long eventsToProcess)
                 {
                     // 0;WM_USER-1 is the range of message IDs reserved for use
                     // by the system.
                 {
                     // 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
                     // 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
                 }
                 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?
         }
 
         // should we process this event now?

-        if (cat & eventsToProcess)
+        if ( processNow )

         {
             if ( !wxTheApp->Dispatch() )
                 break;
         {
             if ( !wxTheApp->Dispatch() )
                 break;


@@ -516,61 +451,3 @@ bool wxGUIEventLoop::YieldFor(long eventsToProcess)
 
     return true;
 }
 
     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