2bc6e50ede
Replace a few occurrences of
type var
= value;
with
type var =
value;
which is used much more widely in wx sources for consistency.
Also get rid of a couple of such lines, when it could be done easily.
No real changes.
1023 lines
30 KiB
C++
1023 lines
30 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: src/msw/app.cpp
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// Purpose: wxApp
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// Author: Julian Smart
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// Modified by:
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// Created: 04/01/98
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// Copyright: (c) Julian Smart
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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// ===========================================================================
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// declarations
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// ===========================================================================
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// ---------------------------------------------------------------------------
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// headers
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// ---------------------------------------------------------------------------
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// For compilers that support precompilation, includes "wx.h".
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#include "wx/wxprec.h"
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#if defined(__BORLANDC__)
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#pragma hdrstop
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#endif
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#ifndef WX_PRECOMP
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#include "wx/msw/wrapcctl.h"
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#include "wx/dynarray.h"
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#include "wx/frame.h"
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#include "wx/app.h"
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#include "wx/utils.h"
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#include "wx/gdicmn.h"
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#include "wx/pen.h"
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#include "wx/brush.h"
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#include "wx/cursor.h"
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#include "wx/icon.h"
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#include "wx/palette.h"
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#include "wx/dc.h"
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#include "wx/dialog.h"
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#include "wx/msgdlg.h"
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#include "wx/intl.h"
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#include "wx/crt.h"
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#include "wx/log.h"
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#include "wx/module.h"
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#endif
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#include "wx/apptrait.h"
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#include "wx/filename.h"
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#include "wx/dynlib.h"
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#include "wx/evtloop.h"
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#include "wx/thread.h"
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#include "wx/scopeguard.h"
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#include "wx/vector.h"
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#include "wx/weakref.h"
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#include "wx/msw/private.h"
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#include "wx/msw/dc.h"
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#include "wx/msw/ole/oleutils.h"
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#include "wx/msw/private/timer.h"
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#if wxUSE_TOOLTIPS
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#include "wx/tooltip.h"
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#endif // wxUSE_TOOLTIPS
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#if wxUSE_OLE
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#include <ole2.h>
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#endif
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#include <string.h>
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#include <ctype.h>
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#include "wx/msw/missing.h"
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// instead of including <shlwapi.h> which is not part of the core SDK and not
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// shipped at all with other compilers, we always define the parts of it we
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// need here ourselves
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//
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// NB: DLLVER_PLATFORM_WINDOWS will be defined if shlwapi.h had been somehow
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// included already
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#ifndef DLLVER_PLATFORM_WINDOWS
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// hopefully we don't need to change packing as DWORDs should be already
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// correctly aligned
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struct DLLVERSIONINFO
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{
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DWORD cbSize;
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DWORD dwMajorVersion; // Major version
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DWORD dwMinorVersion; // Minor version
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DWORD dwBuildNumber; // Build number
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DWORD dwPlatformID; // DLLVER_PLATFORM_*
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};
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typedef HRESULT (CALLBACK* DLLGETVERSIONPROC)(DLLVERSIONINFO *);
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#endif // defined(DLLVERSIONINFO)
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// ---------------------------------------------------------------------------
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// global variables
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// ---------------------------------------------------------------------------
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extern void wxSetKeyboardHook(bool doIt);
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// because of mingw32 4.3 bug this struct can't be inside the namespace below:
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// see http://article.gmane.org/gmane.comp.lib.wxwidgets.devel/110282
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struct ClassRegInfo
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{
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ClassRegInfo(const wxChar *name, int flags)
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{
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if ( (flags & wxApp::RegClass_OnlyNR) == wxApp::RegClass_OnlyNR )
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{
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// We don't register the "normal" variant, so leave its name empty
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// to indicate that it's not used and use the given name for the
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// class that we do register: we don't need the "NR" suffix to
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// distinguish it in this case as there is only a single variant.
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regnameNR = name;
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}
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else // Register both normal and NR variants.
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{
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// Here we use a special suffix to make the class names unique.
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regname = name;
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regnameNR = regname + wxApp::GetNoRedrawClassSuffix();
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}
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}
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// Return the appropriate string depending on the presence of
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// RegClass_ReturnNR bit in the flags.
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const wxChar* GetRequestedName(int flags) const
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{
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return (flags & wxApp::RegClass_ReturnNR ? regnameNR : regname).t_str();
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}
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// the name of the registered class with and without CS_[HV]REDRAW styles
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wxString regname;
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wxString regnameNR;
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};
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namespace
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{
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wxVector<ClassRegInfo> gs_regClassesInfo;
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} // anonymous namespace
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// ----------------------------------------------------------------------------
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// private functions
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// ----------------------------------------------------------------------------
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LRESULT WXDLLEXPORT APIENTRY wxWndProc(HWND, UINT, WPARAM, LPARAM);
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// ===========================================================================
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// wxGUIAppTraits implementation
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// ===========================================================================
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// private class which we use to pass parameters from BeforeChildWaitLoop() to
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// AfterChildWaitLoop()
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struct ChildWaitLoopData
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{
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ChildWaitLoopData(wxWindowDisabler *wd_, wxWindow *focused_, wxWindow *winActive_)
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{
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wd = wd_;
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focused = focused_;
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winActive = winActive_;
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}
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wxWindowDisabler *wd;
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wxWeakRef<wxWindow> focused;
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wxWindow *winActive;
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};
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void *wxGUIAppTraits::BeforeChildWaitLoop()
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{
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/*
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We use a dirty hack here to disable all application windows (which we
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must do because otherwise the calls to wxYield() could lead to some very
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unexpected reentrancies in the users code) but to avoid losing
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focus/activation entirely when the child process terminates which would
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happen if we simply disabled everything using wxWindowDisabler. Indeed,
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remember that Windows will never activate a disabled window and when the
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last child's window is closed and Windows looks for a window to activate
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all our windows are still disabled. There is no way to enable them in
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time because we don't know when the child's windows are going to be
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closed, so the solution we use here is to keep one special tiny dialog
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enabled all the time. Then when the child terminates it will get
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activated and when we close it below -- after re-enabling all the other
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windows! -- the previously active window becomes activated again and
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everything is ok.
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*/
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wxBeginBusyCursor();
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wxWindow* const focus = wxWindow::FindFocus();
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// first disable all existing windows
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wxWindowDisabler *wd = new wxWindowDisabler;
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// then create an "invisible" dialog: it has minimal size, is positioned
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// (hopefully) outside the screen and doesn't appear in the Alt-TAB list
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// (unlike the frames, which is why we use a dialog here)
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wxWindow *winActive = new wxDialog
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(
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wxTheApp->GetTopWindow(),
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wxID_ANY,
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wxEmptyString,
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wxPoint(32600, 32600),
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wxSize(1, 1)
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);
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winActive->Show();
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return new ChildWaitLoopData(wd, focus, winActive);
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}
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void wxGUIAppTraits::AfterChildWaitLoop(void *dataOrig)
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{
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wxEndBusyCursor();
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ChildWaitLoopData * const data = (ChildWaitLoopData *)dataOrig;
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delete data->wd;
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if ( data->focused )
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data->focused->SetFocus();
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// finally delete the dummy dialog and, as wd has been already destroyed
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// and the other windows reenabled, the activation is going to return to
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// the window which had had it before
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data->winActive->Destroy();
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// also delete the temporary data object itself
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delete data;
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}
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#if wxUSE_THREADS
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bool wxGUIAppTraits::DoMessageFromThreadWait()
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{
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// we should return false only if the app should exit, i.e. only if
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// Dispatch() determines that the main event loop should terminate
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wxEventLoopBase * const evtLoop = wxEventLoop::GetActive();
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if ( !evtLoop || !evtLoop->Pending() )
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{
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// no events means no quit event
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return true;
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}
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return evtLoop->Dispatch();
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}
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WXDWORD wxGUIAppTraits::WaitForThread(WXHANDLE hThread, int flags)
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{
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// We only ever dispatch messages from the main thread and, additionally,
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// even from the main thread we shouldn't wait for the message if we don't
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// have a running event loop as we would never remove them from the message
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// queue then and so we would enter an infinite loop as
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// MsgWaitForMultipleObjects() keeps returning WAIT_OBJECT_0 + 1.
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if ( flags == wxTHREAD_WAIT_YIELD && wxIsMainThread() )
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{
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wxMSWEventLoopBase* const
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evtLoop = static_cast<wxMSWEventLoopBase *>(wxEventLoop::GetActive());
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if ( evtLoop )
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return evtLoop->MSWWaitForThread(hThread);
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}
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// Simple blocking wait.
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return DoSimpleWaitForThread(hThread);
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}
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#endif // wxUSE_THREADS
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wxPortId wxGUIAppTraits::GetToolkitVersion(int *majVer,
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int *minVer,
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int *microVer) const
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{
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// on Windows, the toolkit version is the same of the OS version
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// as Windows integrates the OS kernel with the GUI toolkit.
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wxGetOsVersion(majVer, minVer, microVer);
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return wxPORT_MSW;
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}
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#if wxUSE_TIMER
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wxTimerImpl *wxGUIAppTraits::CreateTimerImpl(wxTimer *timer)
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{
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return new wxMSWTimerImpl(timer);
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}
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#endif // wxUSE_TIMER
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wxEventLoopBase* wxGUIAppTraits::CreateEventLoop()
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{
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return new wxEventLoop;
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}
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// ---------------------------------------------------------------------------
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// Stuff for using console from the GUI applications
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// ---------------------------------------------------------------------------
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#if wxUSE_DYNLIB_CLASS
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#include <wx/dynlib.h>
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namespace
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{
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/*
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Helper class to manipulate console from a GUI app.
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Notice that console output is available in the GUI app only if:
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- AttachConsole() returns TRUE (which means it never works under pre-XP)
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- we have a valid STD_ERROR_HANDLE
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- command history hasn't been changed since our startup
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To check if all these conditions are verified, you need to simple call
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IsOkToUse(). It will check the first two conditions above the first time it
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is called (and if this fails, the subsequent calls will return immediately)
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and also recheck the last one every time it is called.
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*/
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class wxConsoleStderr
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{
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public:
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// default ctor does nothing, call Init() before using this class
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wxConsoleStderr()
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{
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m_hStderr = INVALID_HANDLE_VALUE;
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m_historyLen =
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m_dataLen =
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m_dataLine = 0;
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m_ok = -1;
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}
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~wxConsoleStderr()
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{
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if ( m_hStderr != INVALID_HANDLE_VALUE )
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{
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if ( !::FreeConsole() )
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{
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wxLogLastError(wxT("FreeConsole"));
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}
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}
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}
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// return true if we were successfully initialized and there had been no
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// console activity which would interfere with our output since then
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bool IsOkToUse() const
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{
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if ( m_ok == -1 )
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{
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wxConsoleStderr * const self = const_cast<wxConsoleStderr *>(this);
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self->m_ok = self->DoInit();
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// no need to call IsHistoryUnchanged() as we just initialized
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// m_history anyhow
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return m_ok == 1;
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}
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return m_ok && IsHistoryUnchanged();
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}
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// output the provided text on the console, return true if ok
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bool Write(const wxString& text);
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private:
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// called by Init() once only to do the real initialization
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bool DoInit();
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// retrieve the command line history into the provided buffer and return
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// its length
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int GetCommandHistory(wxWxCharBuffer& buf) const;
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// check if the console history has changed
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bool IsHistoryUnchanged() const;
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int m_ok; // initially -1, set to true or false by Init()
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wxDynamicLibrary m_dllKernel32;
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HANDLE m_hStderr; // console handle, if it's valid we must call
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// FreeConsole() (even if m_ok != 1)
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wxWxCharBuffer m_history; // command history on startup
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int m_historyLen; // length command history buffer
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wxCharBuffer m_data; // data between empty line and cursor position
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int m_dataLen; // length data buffer
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int m_dataLine; // line offset
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typedef DWORD (WINAPI *GetConsoleCommandHistory_t)(LPTSTR sCommands,
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DWORD nBufferLength,
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LPCTSTR sExeName);
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typedef DWORD (WINAPI *GetConsoleCommandHistoryLength_t)(LPCTSTR sExeName);
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GetConsoleCommandHistory_t m_pfnGetConsoleCommandHistory;
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GetConsoleCommandHistoryLength_t m_pfnGetConsoleCommandHistoryLength;
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wxDECLARE_NO_COPY_CLASS(wxConsoleStderr);
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};
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bool wxConsoleStderr::DoInit()
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{
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HANDLE hStderr = ::GetStdHandle(STD_ERROR_HANDLE);
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if ( hStderr == INVALID_HANDLE_VALUE || !hStderr )
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return false;
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if ( !m_dllKernel32.Load(wxT("kernel32.dll")) )
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return false;
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if ( !::AttachConsole(ATTACH_PARENT_PROCESS) )
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return false;
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// console attached, set m_hStderr now to ensure that we free it in the
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// dtor
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m_hStderr = hStderr;
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wxDL_INIT_FUNC_AW(m_pfn, GetConsoleCommandHistory, m_dllKernel32);
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if ( !m_pfnGetConsoleCommandHistory )
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return false;
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wxDL_INIT_FUNC_AW(m_pfn, GetConsoleCommandHistoryLength, m_dllKernel32);
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if ( !m_pfnGetConsoleCommandHistoryLength )
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return false;
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// remember the current command history to be able to compare with it later
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// in IsHistoryUnchanged()
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m_historyLen = GetCommandHistory(m_history);
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if ( !m_history )
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return false;
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// now find the first blank line above the current position
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CONSOLE_SCREEN_BUFFER_INFO csbi;
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if ( !::GetConsoleScreenBufferInfo(m_hStderr, &csbi) )
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{
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wxLogLastError(wxT("GetConsoleScreenBufferInfo"));
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return false;
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}
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COORD pos;
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pos.X = 0;
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pos.Y = csbi.dwCursorPosition.Y + 1;
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// we decide that a line is empty if first 4 characters are spaces
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DWORD ret;
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char buf[4];
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do
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{
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pos.Y--;
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if ( !::ReadConsoleOutputCharacterA(m_hStderr, buf, WXSIZEOF(buf),
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pos, &ret) )
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{
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wxLogLastError(wxT("ReadConsoleOutputCharacterA"));
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return false;
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}
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} while ( wxStrncmp(" ", buf, WXSIZEOF(buf)) != 0 );
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// calculate line offset and length of data
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m_dataLine = csbi.dwCursorPosition.Y - pos.Y;
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m_dataLen = m_dataLine*csbi.dwMaximumWindowSize.X + csbi.dwCursorPosition.X;
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if ( m_dataLen > 0 )
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{
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m_data.extend(m_dataLen);
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if ( !::ReadConsoleOutputCharacterA(m_hStderr, m_data.data(), m_dataLen,
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pos, &ret) )
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{
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wxLogLastError(wxT("ReadConsoleOutputCharacterA"));
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return false;
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}
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}
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return true;
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}
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int wxConsoleStderr::GetCommandHistory(wxWxCharBuffer& buf) const
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{
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// these functions are internal and may only be called by cmd.exe
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static const wxChar *CMD_EXE = wxT("cmd.exe");
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const int len = m_pfnGetConsoleCommandHistoryLength(CMD_EXE);
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if ( len )
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{
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buf.extend(len);
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int len2 = m_pfnGetConsoleCommandHistory(buf.data(), len, CMD_EXE);
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#if !wxUSE_UNICODE
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// there seems to be a bug in the GetConsoleCommandHistoryA(), it
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// returns the length of Unicode string and not ANSI one
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len2 /= 2;
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#endif // !wxUSE_UNICODE
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if ( len2 != len )
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{
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wxFAIL_MSG( wxT("failed getting history?") );
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}
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}
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return len;
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}
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bool wxConsoleStderr::IsHistoryUnchanged() const
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{
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wxASSERT_MSG( m_ok == 1, wxT("shouldn't be called if not initialized") );
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// get (possibly changed) command history
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wxWxCharBuffer history;
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const int historyLen = GetCommandHistory(history);
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// and compare it with the original one
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return historyLen == m_historyLen && history &&
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memcmp(m_history, history, historyLen) == 0;
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}
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|
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bool wxConsoleStderr::Write(const wxString& text)
|
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{
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wxASSERT_MSG( m_hStderr != INVALID_HANDLE_VALUE,
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wxT("should only be called if Init() returned true") );
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|
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// get current position
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CONSOLE_SCREEN_BUFFER_INFO csbi;
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if ( !::GetConsoleScreenBufferInfo(m_hStderr, &csbi) )
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{
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wxLogLastError(wxT("GetConsoleScreenBufferInfo"));
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return false;
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}
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|
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// and calculate new position (where is empty line)
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csbi.dwCursorPosition.X = 0;
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csbi.dwCursorPosition.Y -= m_dataLine;
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if ( !::SetConsoleCursorPosition(m_hStderr, csbi.dwCursorPosition) )
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{
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wxLogLastError(wxT("SetConsoleCursorPosition"));
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return false;
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}
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DWORD ret;
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if ( !::FillConsoleOutputCharacter(m_hStderr, wxT(' '), m_dataLen,
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csbi.dwCursorPosition, &ret) )
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{
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wxLogLastError(wxT("FillConsoleOutputCharacter"));
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return false;
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}
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if ( !::WriteConsole(m_hStderr, text.t_str(), text.length(), &ret, NULL) )
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{
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wxLogLastError(wxT("WriteConsole"));
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return false;
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}
|
|
|
|
WriteConsoleA(m_hStderr, m_data, m_dataLen, &ret, 0);
|
|
|
|
return true;
|
|
}
|
|
|
|
wxConsoleStderr s_consoleStderr;
|
|
|
|
} // anonymous namespace
|
|
|
|
bool wxGUIAppTraits::CanUseStderr()
|
|
{
|
|
return s_consoleStderr.IsOkToUse();
|
|
}
|
|
|
|
bool wxGUIAppTraits::WriteToStderr(const wxString& text)
|
|
{
|
|
return s_consoleStderr.IsOkToUse() && s_consoleStderr.Write(text);
|
|
}
|
|
|
|
#else // !wxUSE_DYNLIB_CLASS
|
|
|
|
bool wxGUIAppTraits::CanUseStderr()
|
|
{
|
|
return false;
|
|
}
|
|
|
|
bool wxGUIAppTraits::WriteToStderr(const wxString& WXUNUSED(text))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
#endif // wxUSE_DYNLIB_CLASS/!wxUSE_DYNLIB_CLASS
|
|
|
|
// ===========================================================================
|
|
// wxApp implementation
|
|
// ===========================================================================
|
|
|
|
int wxApp::m_nCmdShow = SW_SHOWNORMAL;
|
|
|
|
// ---------------------------------------------------------------------------
|
|
// wxWin macros
|
|
// ---------------------------------------------------------------------------
|
|
|
|
wxIMPLEMENT_DYNAMIC_CLASS(wxApp, wxEvtHandler);
|
|
|
|
wxBEGIN_EVENT_TABLE(wxApp, wxEvtHandler)
|
|
EVT_IDLE(wxApp::OnIdle)
|
|
EVT_END_SESSION(wxApp::OnEndSession)
|
|
EVT_QUERY_END_SESSION(wxApp::OnQueryEndSession)
|
|
wxEND_EVENT_TABLE()
|
|
|
|
// class to ensure that wxAppBase::CleanUp() is called if our Initialize()
|
|
// fails
|
|
class wxCallBaseCleanup
|
|
{
|
|
public:
|
|
wxCallBaseCleanup(wxApp *app) : m_app(app) { }
|
|
~wxCallBaseCleanup() { if ( m_app ) m_app->wxAppBase::CleanUp(); }
|
|
|
|
void Dismiss() { m_app = NULL; }
|
|
|
|
private:
|
|
wxApp *m_app;
|
|
};
|
|
|
|
//// Initialize
|
|
bool wxApp::Initialize(int& argc_, wxChar **argv_)
|
|
{
|
|
if ( !wxAppBase::Initialize(argc_, argv_) )
|
|
return false;
|
|
|
|
// ensure that base cleanup is done if we return too early
|
|
wxCallBaseCleanup callBaseCleanup(this);
|
|
|
|
InitCommonControls();
|
|
|
|
wxOleInitialize();
|
|
|
|
wxSetKeyboardHook(true);
|
|
|
|
callBaseCleanup.Dismiss();
|
|
|
|
return true;
|
|
}
|
|
|
|
// ---------------------------------------------------------------------------
|
|
// Win32 window class registration
|
|
// ---------------------------------------------------------------------------
|
|
|
|
/* static */
|
|
const wxChar *wxApp::GetRegisteredClassName(const wxChar *name,
|
|
int bgBrushCol,
|
|
int extraStyles,
|
|
int flags)
|
|
{
|
|
const size_t count = gs_regClassesInfo.size();
|
|
for ( size_t n = 0; n < count; n++ )
|
|
{
|
|
if ( gs_regClassesInfo[n].regname == name ||
|
|
gs_regClassesInfo[n].regnameNR == name )
|
|
return gs_regClassesInfo[n].GetRequestedName(flags);
|
|
}
|
|
|
|
// we need to register this class
|
|
WNDCLASS wndclass;
|
|
wxZeroMemory(wndclass);
|
|
|
|
wndclass.lpfnWndProc = (WNDPROC)wxWndProc;
|
|
wndclass.hInstance = wxGetInstance();
|
|
wndclass.hCursor = ::LoadCursor(NULL, IDC_ARROW);
|
|
wndclass.hbrBackground = (HBRUSH)wxUIntToPtr(bgBrushCol + 1);
|
|
wndclass.style = CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS | extraStyles;
|
|
|
|
|
|
ClassRegInfo regClass(name, flags);
|
|
if ( !regClass.regname.empty() )
|
|
{
|
|
wndclass.lpszClassName = regClass.regname.t_str();
|
|
if ( !::RegisterClass(&wndclass) )
|
|
{
|
|
wxLogLastError(wxString::Format(wxT("RegisterClass(%s)"),
|
|
regClass.regname));
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
wndclass.style &= ~(CS_HREDRAW | CS_VREDRAW);
|
|
wndclass.lpszClassName = regClass.regnameNR.t_str();
|
|
if ( !::RegisterClass(&wndclass) )
|
|
{
|
|
wxLogLastError(wxString::Format(wxT("RegisterClass(%s)"),
|
|
regClass.regname));
|
|
::UnregisterClass(regClass.regname.c_str(), wxGetInstance());
|
|
return NULL;
|
|
}
|
|
|
|
gs_regClassesInfo.push_back(regClass);
|
|
|
|
// take care to return the pointer which will remain valid after the
|
|
// function returns (it could be invalidated later if new elements are
|
|
// added to the vector and it's reallocated but this shouldn't matter as
|
|
// this pointer should be used right now, not stored)
|
|
return gs_regClassesInfo.back().GetRequestedName(flags);
|
|
}
|
|
|
|
bool wxApp::IsRegisteredClassName(const wxString& name)
|
|
{
|
|
const size_t count = gs_regClassesInfo.size();
|
|
for ( size_t n = 0; n < count; n++ )
|
|
{
|
|
if ( gs_regClassesInfo[n].regname == name ||
|
|
gs_regClassesInfo[n].regnameNR == name )
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
void wxApp::UnregisterWindowClasses()
|
|
{
|
|
const size_t count = gs_regClassesInfo.size();
|
|
for ( size_t n = 0; n < count; n++ )
|
|
{
|
|
const ClassRegInfo& regClass = gs_regClassesInfo[n];
|
|
if ( !regClass.regname.empty() )
|
|
{
|
|
if ( !::UnregisterClass(regClass.regname.c_str(), wxGetInstance()) )
|
|
{
|
|
wxLogLastError(wxString::Format(wxT("UnregisterClass(%s)"),
|
|
regClass.regname));
|
|
}
|
|
}
|
|
|
|
if ( !::UnregisterClass(regClass.regnameNR.c_str(), wxGetInstance()) )
|
|
{
|
|
wxLogLastError(wxString::Format(wxT("UnregisterClass(%s)"),
|
|
regClass.regnameNR));
|
|
}
|
|
}
|
|
|
|
gs_regClassesInfo.clear();
|
|
}
|
|
|
|
void wxApp::CleanUp()
|
|
{
|
|
// all objects pending for deletion must be deleted first, otherwise
|
|
// UnregisterWindowClasses() call wouldn't succeed (because windows
|
|
// using the classes being unregistered still exist), so call the base
|
|
// class method first and only then do our clean up
|
|
wxAppBase::CleanUp();
|
|
|
|
wxSetKeyboardHook(false);
|
|
|
|
wxOleUninitialize();
|
|
|
|
// for an EXE the classes are unregistered when it terminates but DLL may
|
|
// be loaded several times (load/unload/load) into the same process in
|
|
// which case the registration will fail after the first time if we don't
|
|
// unregister the classes now
|
|
UnregisterWindowClasses();
|
|
}
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// wxApp ctor/dtor
|
|
// ----------------------------------------------------------------------------
|
|
|
|
wxApp::wxApp()
|
|
{
|
|
m_printMode = wxPRINT_WINDOWS;
|
|
}
|
|
|
|
wxApp::~wxApp()
|
|
{
|
|
}
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// wxApp idle handling
|
|
// ----------------------------------------------------------------------------
|
|
|
|
void wxApp::OnIdle(wxIdleEvent& WXUNUSED(event))
|
|
{
|
|
#if wxUSE_DC_CACHEING
|
|
// automated DC cache management: clear the cached DCs and bitmap
|
|
// if it's likely that the app has finished with them, that is, we
|
|
// get an idle event and we're not dragging anything.
|
|
if (!::GetKeyState(MK_LBUTTON) && !::GetKeyState(MK_MBUTTON) && !::GetKeyState(MK_RBUTTON))
|
|
wxMSWDCImpl::ClearCache();
|
|
#endif // wxUSE_DC_CACHEING
|
|
}
|
|
|
|
void wxApp::WakeUpIdle()
|
|
{
|
|
wxEventLoopBase * const evtLoop = wxEventLoop::GetActive();
|
|
if ( !evtLoop )
|
|
{
|
|
// We can't wake up the event loop if there is none and there is just
|
|
// no need to do anything in this case, any pending events will be
|
|
// handled when the event loop starts.
|
|
return;
|
|
}
|
|
|
|
evtLoop->WakeUp();
|
|
}
|
|
|
|
void wxApp::MSWProcessPendingEventsIfNeeded()
|
|
{
|
|
// The cast below is safe as wxEventLoop derives from wxMSWEventLoopBase in
|
|
// both console and GUI applications.
|
|
wxMSWEventLoopBase * const evtLoop =
|
|
static_cast<wxMSWEventLoopBase *>(wxEventLoop::GetActive());
|
|
if ( evtLoop && evtLoop->MSWIsWakeUpRequested() )
|
|
ProcessPendingEvents();
|
|
}
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// other wxApp event handlers
|
|
// ----------------------------------------------------------------------------
|
|
|
|
void wxApp::OnEndSession(wxCloseEvent& WXUNUSED(event))
|
|
{
|
|
// Windows will terminate the process soon after we return from
|
|
// WM_ENDSESSION handler or when we delete our last window, so make sure we
|
|
// at least execute our cleanup code before
|
|
|
|
// prevent the window from being destroyed when the corresponding wxTLW is
|
|
// destroyed: this will result in a leak of a HWND, of course, but who
|
|
// cares when the process is being killed anyhow
|
|
if ( !wxTopLevelWindows.empty() )
|
|
wxTopLevelWindows[0]->SetHWND(0);
|
|
|
|
// Destroy all the remaining TLWs before calling OnExit() to have the same
|
|
// sequence of events in this case as in case of the normal shutdown,
|
|
// otherwise we could have many problems due to wxApp being already
|
|
// destroyed when window cleanup code (in close event handlers or dtor) is
|
|
// executed.
|
|
DeleteAllTLWs();
|
|
|
|
const int rc = OnExit();
|
|
|
|
wxEntryCleanup();
|
|
|
|
// calling exit() instead of ExitProcess() or not doing anything at all and
|
|
// being killed by Windows has the advantage of executing the dtors of
|
|
// global objects
|
|
exit(rc);
|
|
}
|
|
|
|
// Default behaviour: close the application with prompts. The
|
|
// user can veto the close, and therefore the end session.
|
|
void wxApp::OnQueryEndSession(wxCloseEvent& event)
|
|
{
|
|
if (GetTopWindow())
|
|
{
|
|
if (!GetTopWindow()->Close(!event.CanVeto()))
|
|
event.Veto(true);
|
|
}
|
|
}
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// system DLL versions
|
|
// ----------------------------------------------------------------------------
|
|
|
|
#if wxUSE_DYNLIB_CLASS
|
|
|
|
namespace
|
|
{
|
|
|
|
// helper function: retrieve the DLL version by using DllGetVersion(), returns
|
|
// 0 if the DLL doesn't export such function
|
|
int CallDllGetVersion(wxDynamicLibrary& dll)
|
|
{
|
|
// now check if the function is available during run-time
|
|
wxDYNLIB_FUNCTION( DLLGETVERSIONPROC, DllGetVersion, dll );
|
|
if ( !pfnDllGetVersion )
|
|
return 0;
|
|
|
|
DLLVERSIONINFO dvi;
|
|
dvi.cbSize = sizeof(dvi);
|
|
|
|
HRESULT hr = (*pfnDllGetVersion)(&dvi);
|
|
if ( FAILED(hr) )
|
|
{
|
|
wxLogApiError(wxT("DllGetVersion"), hr);
|
|
|
|
return 0;
|
|
}
|
|
|
|
return 100*dvi.dwMajorVersion + dvi.dwMinorVersion;
|
|
}
|
|
|
|
} // anonymous namespace
|
|
|
|
/* static */
|
|
int wxApp::GetComCtl32Version()
|
|
{
|
|
// cache the result
|
|
//
|
|
// NB: this is MT-ok as in the worst case we'd compute s_verComCtl32 twice,
|
|
// but as its value should be the same both times it doesn't matter
|
|
static int s_verComCtl32 = -1;
|
|
|
|
if ( s_verComCtl32 == -1 )
|
|
{
|
|
// we're prepared to handle the errors
|
|
wxLogNull noLog;
|
|
|
|
// we don't want to load comctl32.dll, it should be already loaded but,
|
|
// depending on the OS version and the presence of the manifest, it can
|
|
// be either v5 or v6 and instead of trying to guess it just get the
|
|
// handle of the already loaded version
|
|
wxLoadedDLL dllComCtl32(wxT("comctl32.dll"));
|
|
if ( !dllComCtl32.IsLoaded() )
|
|
{
|
|
s_verComCtl32 = 0;
|
|
return 0;
|
|
}
|
|
|
|
// try DllGetVersion() for recent DLLs
|
|
s_verComCtl32 = CallDllGetVersion(dllComCtl32);
|
|
|
|
// if DllGetVersion() is unavailable either during compile or
|
|
// run-time, try to guess the version otherwise
|
|
if ( !s_verComCtl32 )
|
|
{
|
|
// InitCommonControlsEx is unique to 4.70 and later
|
|
void *pfn = dllComCtl32.GetSymbol(wxT("InitCommonControlsEx"));
|
|
if ( !pfn )
|
|
{
|
|
// not found, must be 4.00
|
|
s_verComCtl32 = 400;
|
|
}
|
|
else // 4.70+
|
|
{
|
|
// many symbols appeared in comctl32 4.71, could use any of
|
|
// them except may be DllInstall()
|
|
pfn = dllComCtl32.GetSymbol(wxT("InitializeFlatSB"));
|
|
if ( !pfn )
|
|
{
|
|
// not found, must be 4.70
|
|
s_verComCtl32 = 470;
|
|
}
|
|
else
|
|
{
|
|
// found, must be 4.71 or later
|
|
s_verComCtl32 = 471;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return s_verComCtl32;
|
|
}
|
|
|
|
#else // !wxUSE_DYNLIB_CLASS
|
|
|
|
/* static */
|
|
int wxApp::GetComCtl32Version()
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
#endif // wxUSE_DYNLIB_CLASS/!wxUSE_DYNLIB_CLASS
|
|
|
|
#if wxUSE_EXCEPTIONS
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// exception handling
|
|
// ----------------------------------------------------------------------------
|
|
|
|
bool wxApp::OnExceptionInMainLoop()
|
|
{
|
|
// ask the user about what to do: use the Win32 API function here as it
|
|
// could be dangerous to use any wxWidgets code in this state
|
|
switch (
|
|
::MessageBox
|
|
(
|
|
NULL,
|
|
wxT("An unhandled exception occurred. Press \"Abort\" to \
|
|
terminate the program,\r\n\
|
|
\"Retry\" to exit the program normally and \"Ignore\" to try to continue."),
|
|
wxT("Unhandled exception"),
|
|
MB_ABORTRETRYIGNORE |
|
|
MB_ICONERROR|
|
|
MB_TASKMODAL
|
|
)
|
|
)
|
|
{
|
|
case IDABORT:
|
|
throw;
|
|
|
|
default:
|
|
wxFAIL_MSG( wxT("unexpected MessageBox() return code") );
|
|
wxFALLTHROUGH;
|
|
|
|
case IDRETRY:
|
|
return false;
|
|
|
|
case IDIGNORE:
|
|
return true;
|
|
}
|
|
}
|
|
|
|
#endif // wxUSE_EXCEPTIONS
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// Layout direction
|
|
// ----------------------------------------------------------------------------
|
|
|
|
/* static */
|
|
wxLayoutDirection wxApp::MSWGetDefaultLayout(wxWindow* parent)
|
|
{
|
|
wxLayoutDirection dir = wxLayout_Default;
|
|
|
|
if ( parent )
|
|
dir = parent->GetLayoutDirection();
|
|
|
|
if ( dir == wxLayout_Default )
|
|
{
|
|
if ( wxTheApp )
|
|
dir = wxTheApp->GetLayoutDirection();
|
|
}
|
|
|
|
if ( dir == wxLayout_Default )
|
|
{
|
|
DWORD dwLayout;
|
|
if ( ::GetProcessDefaultLayout(&dwLayout) )
|
|
{
|
|
dir = dwLayout == LAYOUT_RTL ? wxLayout_RightToLeft
|
|
: wxLayout_LeftToRight;
|
|
}
|
|
}
|
|
|
|
return dir;
|
|
}
|