75 lines
2.4 KiB
C++
75 lines
2.4 KiB
C++
///////////////////////////////////////////////////////////////////////////////
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// Name: wx/msw/evtloop.h
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// Purpose: wxEventLoop class for wxMSW port
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// Author: Vadim Zeitlin
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// Modified by:
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// Created: 2004-07-31
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// Copyright: (c) 2003-2004 Vadim Zeitlin <vadim@wxwindows.org>
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// Licence: wxWindows licence
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///////////////////////////////////////////////////////////////////////////////
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#ifndef _WX_MSW_EVTLOOP_H_
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#define _WX_MSW_EVTLOOP_H_
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#include "wx/dynarray.h"
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#include "wx/msw/wrapwin.h"
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#include "wx/window.h"
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#include "wx/msw/evtloopconsole.h" // for wxMSWEventLoopBase
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// ----------------------------------------------------------------------------
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// wxEventLoop
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// ----------------------------------------------------------------------------
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WX_DECLARE_EXPORTED_OBJARRAY(MSG, wxMSGArray);
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class WXDLLIMPEXP_CORE wxGUIEventLoop : public wxMSWEventLoopBase
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{
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public:
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wxGUIEventLoop() { }
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// process a single message: calls PreProcessMessage() before dispatching
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// it
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virtual void ProcessMessage(WXMSG *msg);
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// preprocess a message, return true if processed (i.e. no further
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// dispatching required)
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virtual bool PreProcessMessage(WXMSG *msg);
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// set the critical window: this is the window such that all the events
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// except those to this window (and its children) stop to be processed
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// (typical examples: assert or crash report dialog)
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//
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// calling this function with NULL argument restores the normal event
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// handling
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static void SetCriticalWindow(wxWindowMSW *win) { ms_winCritical = win; }
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// return true if there is no critical window or if this window is [a child
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// of] the critical one
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static bool AllowProcessing(wxWindowMSW *win)
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{
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return !ms_winCritical || IsChildOfCriticalWindow(win);
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}
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// override/implement base class virtuals
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virtual bool Dispatch();
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virtual int DispatchTimeout(unsigned long timeout);
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virtual void WakeUp();
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virtual bool YieldFor(long eventsToProcess);
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protected:
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virtual void OnNextIteration();
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private:
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// check if the given window is a child of ms_winCritical (which must be
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// non NULL)
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static bool IsChildOfCriticalWindow(wxWindowMSW *win);
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// array of messages used for temporary storage by YieldFor()
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wxMSGArray m_arrMSG;
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// critical window or NULL
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static wxWindowMSW *ms_winCritical;
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};
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#endif // _WX_MSW_EVTLOOP_H_
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