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7ece89c6b10b74d90534afcffc61522a8f394d8c
wxWidgets/src/msw/app.cpp
Robin Dunn 7ece89c6b1 Did splitting of wxEntry for wxMSW. Not nearly as complex as wxGTK 
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@6612 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
2000-03-11 09:05:03 +00:00

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/////////////////////////////////////////////////////////////////////////////
// Name: app.cpp
// Purpose: wxApp
// Author: Julian Smart
// Modified by:
// Created: 04/01/98
// RCS-ID: $Id$
// Copyright: (c) Julian Smart and Markus Holzem
// Licence: wxWindows license
/////////////////////////////////////////////////////////////////////////////
// ===========================================================================
// declarations
// ===========================================================================
// ---------------------------------------------------------------------------
// headers
// ---------------------------------------------------------------------------
#ifdef __GNUG__
#pragma implementation "app.h"
#endif
// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"
#if defined(__BORLANDC__)
#pragma hdrstop
#endif
#ifndef WX_PRECOMP
#include "wx/frame.h"
#include "wx/app.h"
#include "wx/utils.h"
#include "wx/gdicmn.h"
#include "wx/pen.h"
#include "wx/brush.h"
#include "wx/cursor.h"
#include "wx/icon.h"
#include "wx/palette.h"
#include "wx/dc.h"
#include "wx/dialog.h"
#include "wx/msgdlg.h"
#include "wx/intl.h"
#include "wx/dynarray.h"
#include "wx/wxchar.h"
#include "wx/icon.h"
#endif
#include "wx/log.h"
#include "wx/module.h"
#include "wx/msw/private.h"
#if wxUSE_THREADS
#include "wx/thread.h"
// define the array of MSG strutures
WX_DECLARE_OBJARRAY(MSG, wxMsgArray);
#include "wx/arrimpl.cpp"
WX_DEFINE_OBJARRAY(wxMsgArray);
#endif // wxUSE_THREADS
#if wxUSE_WX_RESOURCES
#include "wx/resource.h"
#endif
#if wxUSE_TOOLTIPS
#include "wx/tooltip.h"
#endif // wxUSE_TOOLTIPS
// OLE is used for drag-and-drop, clipboard, OLE Automation..., but some
// compilers don't support it (missing headers, libs, ...)
#if defined(__GNUWIN32_OLD__) || defined(__SC__) || defined(__SALFORDC__)
#undef wxUSE_OLE
#define wxUSE_OLE 0
#endif // broken compilers
#if wxUSE_OLE
#include <ole2.h>
#endif
#include <string.h>
#include <ctype.h>
#if defined(__WIN95__) && !(defined(__GNUWIN32_OLD__) || defined(__TWIN32__))
#include <commctrl.h>
#endif
#include "wx/msw/msvcrt.h"
// ----------------------------------------------------------------------------
// conditional compilation
// ----------------------------------------------------------------------------
// The macro _WIN32_IE is defined by commctrl.h (unless it had already been
// defined before) and shows us what common control features are available
// during the compile time (it doesn't mean that they will be available during
// the run-time, use GetComCtl32Version() to test for them!). The possible
// values are:
//
// 0x0200 for comctl32.dll 4.00 shipped with Win95/NT 4.0
// 0x0300 4.70 IE 3.x
// 0x0400 4.71 IE 4.0
// 0x0401 4.72 IE 4.01 and Win98
// 0x0500 5.00 IE 5.x and NT 5.0 (Win2000)
#ifndef _WIN32_IE
// minimal set of features by default
#define _WIN32_IE 0x0200
#endif
#if _WIN32_IE >= 0x0300
#include <shlwapi.h>
#endif
// ---------------------------------------------------------------------------
// global variables
// ---------------------------------------------------------------------------
extern wxChar *wxBuffer;
extern wxChar *wxOsVersion;
extern wxList *wxWinHandleList;
extern wxList WXDLLEXPORT wxPendingDelete;
extern void wxSetKeyboardHook(bool doIt);
MSG s_currentMsg;
wxApp *wxTheApp = NULL;
// NB: all "NoRedraw" classes must have the same names as the "normal" classes
// with NR suffix - wxWindow::MSWCreate() supposes this
const wxChar *wxFrameClassName = wxT("wxFrameClass");
const wxChar *wxFrameClassNameNoRedraw = wxT("wxFrameClassNR");
const wxChar *wxMDIFrameClassName = wxT("wxMDIFrameClass");
const wxChar *wxMDIFrameClassNameNoRedraw = wxT("wxMDIFrameClassNR");
const wxChar *wxMDIChildFrameClassName = wxT("wxMDIChildFrameClass");
const wxChar *wxMDIChildFrameClassNameNoRedraw = wxT("wxMDIChildFrameClassNR");
const wxChar *wxPanelClassName = wxT("wxPanelClass");
const wxChar *wxCanvasClassName = wxT("wxCanvasClass");
HICON wxSTD_FRAME_ICON = (HICON) NULL;
HICON wxSTD_MDICHILDFRAME_ICON = (HICON) NULL;
HICON wxSTD_MDIPARENTFRAME_ICON = (HICON) NULL;
HICON wxDEFAULT_FRAME_ICON = (HICON) NULL;
HICON wxDEFAULT_MDICHILDFRAME_ICON = (HICON) NULL;
HICON wxDEFAULT_MDIPARENTFRAME_ICON = (HICON) NULL;
HBRUSH wxDisableButtonBrush = (HBRUSH) 0;
LRESULT WXDLLEXPORT APIENTRY wxWndProc(HWND, UINT, WPARAM, LPARAM);
// ===========================================================================
// implementation
// ===========================================================================
// ---------------------------------------------------------------------------
// wxApp
// ---------------------------------------------------------------------------
IMPLEMENT_DYNAMIC_CLASS(wxApp, wxEvtHandler)
BEGIN_EVENT_TABLE(wxApp, wxEvtHandler)
EVT_IDLE(wxApp::OnIdle)
EVT_END_SESSION(wxApp::OnEndSession)
EVT_QUERY_END_SESSION(wxApp::OnQueryEndSession)
END_EVENT_TABLE()
//// Initialize
bool wxApp::Initialize()
{
// Some people may wish to use this, but
// probably it shouldn't be here by default.
#ifdef __WXDEBUG__
// wxRedirectIOToConsole();
#endif
wxBuffer = new wxChar[1500]; // FIXME
wxClassInfo::InitializeClasses();
#if wxUSE_RESOURCES
wxGetResource(wxT("wxWindows"), wxT("OsVersion"), &wxOsVersion);
#endif
#if wxUSE_THREADS
wxPendingEventsLocker = new wxCriticalSection;
#endif
wxTheColourDatabase = new wxColourDatabase(wxKEY_STRING);
wxTheColourDatabase->Initialize();
wxInitializeStockLists();
wxInitializeStockObjects();
#if wxUSE_WX_RESOURCES
wxInitializeResourceSystem();
#endif
wxBitmap::InitStandardHandlers();
#if defined(__WIN95__)
InitCommonControls();
#endif // __WIN95__
#if wxUSE_OLE
#ifdef __WIN16__
// for OLE, enlarge message queue to be as large as possible
int iMsg = 96;
while (!SetMessageQueue(iMsg) && (iMsg -= 8))
;
#endif // Win16
// we need to initialize OLE library
if ( FAILED(::OleInitialize(NULL)) )
wxLogError(_("Cannot initialize OLE"));
#endif // wxUSE_OLE
#if wxUSE_CTL3D
if (!Ctl3dRegister(wxhInstance))
wxLogError(wxT("Cannot register CTL3D"));
Ctl3dAutoSubclass(wxhInstance);
#endif
// VZ: these icons are not in wx.rc anyhow (but should they?)!
#if 0
wxSTD_FRAME_ICON = LoadIcon(wxhInstance, wxT("wxSTD_FRAME"));
wxSTD_MDIPARENTFRAME_ICON = LoadIcon(wxhInstance, wxT("wxSTD_MDIPARENTFRAME"));
wxSTD_MDICHILDFRAME_ICON = LoadIcon(wxhInstance, wxT("wxSTD_MDICHILDFRAME"));
wxDEFAULT_FRAME_ICON = LoadIcon(wxhInstance, wxT("wxDEFAULT_FRAME"));
wxDEFAULT_MDIPARENTFRAME_ICON = LoadIcon(wxhInstance, wxT("wxDEFAULT_MDIPARENTFRAME"));
wxDEFAULT_MDICHILDFRAME_ICON = LoadIcon(wxhInstance, wxT("wxDEFAULT_MDICHILDFRAME"));
#endif // 0
RegisterWindowClasses();
// Create the brush for disabling bitmap buttons
LOGBRUSH lb;
lb.lbStyle = BS_PATTERN;
lb.lbHatch = (int)LoadBitmap( wxhInstance, wxT("wxDISABLE_BUTTON_BITMAP") );
if ( lb.lbHatch )
{
wxDisableButtonBrush = ::CreateBrushIndirect( & lb );
::DeleteObject( (HGDIOBJ)lb.lbHatch );
}
//else: wxWindows resources are probably not linked in
#if wxUSE_PENWINDOWS
wxRegisterPenWin();
#endif
wxWinHandleList = new wxList(wxKEY_INTEGER);
// This is to foil optimizations in Visual C++ that throw out dummy.obj.
// PLEASE DO NOT ALTER THIS.
#if defined(__VISUALC__) && !defined(WXMAKINGDLL)
extern char wxDummyChar;
if (wxDummyChar) wxDummyChar++;
#endif
wxSetKeyboardHook(TRUE);
wxModule::RegisterModules();
if (!wxModule::InitializeModules())
return FALSE;
return TRUE;
}
// ---------------------------------------------------------------------------
// RegisterWindowClasses
// ---------------------------------------------------------------------------
// TODO we should only register classes really used by the app. For this it
// would be enough to just delay the class registration until an attempt
// to create a window of this class is made.
bool wxApp::RegisterWindowClasses()
{
WNDCLASS wndclass;
// for each class we register one with CS_(V|H)REDRAW style and one
// without for windows created with wxNO_FULL_REDRAW_ON_REPAINT flag
static const long styleNormal = CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS;
static const long styleNoRedraw = CS_DBLCLKS;
// the fields which are common to all classes
wndclass.lpfnWndProc = (WNDPROC)wxWndProc;
wndclass.cbClsExtra = 0;
wndclass.cbWndExtra = sizeof( DWORD ); // VZ: what is this DWORD used for?
wndclass.hInstance = wxhInstance;
wndclass.hIcon = (HICON) NULL;
wndclass.hCursor = ::LoadCursor((HINSTANCE)NULL, IDC_ARROW);
wndclass.lpszMenuName = NULL;
// Register the frame window class.
wndclass.hbrBackground = (HBRUSH)(COLOR_APPWORKSPACE + 1);
wndclass.lpszClassName = wxFrameClassName;
wndclass.style = styleNormal;
if ( !RegisterClass(&wndclass) )
{
wxLogLastError("RegisterClass(frame)");
return FALSE;
}
// "no redraw" frame
wndclass.lpszClassName = wxFrameClassNameNoRedraw;
wndclass.style = styleNoRedraw;
if ( !RegisterClass(&wndclass) )
{
wxLogLastError("RegisterClass(no redraw frame)");
return FALSE;
}
// Register the MDI frame window class.
wndclass.hbrBackground = (HBRUSH)NULL; // paint MDI frame ourselves
wndclass.lpszClassName = wxMDIFrameClassName;
wndclass.style = styleNormal;
if ( !RegisterClass(&wndclass) )
{
wxLogLastError("RegisterClass(MDI parent)");
return FALSE;
}
// "no redraw" MDI frame
wndclass.lpszClassName = wxMDIFrameClassNameNoRedraw;
wndclass.style = styleNoRedraw;
if ( !RegisterClass(&wndclass) )
{
wxLogLastError("RegisterClass(no redraw MDI parent frame)");
return FALSE;
}
// Register the MDI child frame window class.
wndclass.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1);
wndclass.lpszClassName = wxMDIChildFrameClassName;
wndclass.style = styleNormal;
if ( !RegisterClass(&wndclass) )
{
wxLogLastError("RegisterClass(MDI child)");
return FALSE;
}
// "no redraw" MDI child frame
wndclass.lpszClassName = wxMDIChildFrameClassNameNoRedraw;
wndclass.style = styleNoRedraw;
if ( !RegisterClass(&wndclass) )
{
wxLogLastError("RegisterClass(no redraw MDI child)");
return FALSE;
}
// Register the panel window class.
wndclass.hbrBackground = (HBRUSH) GetStockObject( LTGRAY_BRUSH );
wndclass.lpszClassName = wxPanelClassName;
wndclass.style = styleNormal;
if ( !RegisterClass(&wndclass) )
{
wxLogLastError("RegisterClass(panel)");
return FALSE;
}
// Register the canvas and textsubwindow class name
wndclass.hbrBackground = (HBRUSH)NULL;
wndclass.lpszClassName = wxCanvasClassName;
if ( !RegisterClass(&wndclass) )
{
wxLogLastError("RegisterClass(canvas)");
return FALSE;
}
return TRUE;
}
// ---------------------------------------------------------------------------
// Convert Windows to argc, argv style
// ---------------------------------------------------------------------------
void wxApp::ConvertToStandardCommandArgs(char* lpCmdLine)
{
wxStringList args;
wxString cmdLine(lpCmdLine);
int count = 0;
// Get application name
wxChar name[260]; // 260 is MAX_PATH value from windef.h
::GetModuleFileName(wxhInstance, name, WXSIZEOF(name));
args.Add(name);
count++;
wxStrcpy(name, wxFileNameFromPath(name));
wxStripExtension(name);
wxTheApp->SetAppName(name);
// Break up string
// Treat strings enclosed in double-quotes as single arguments
int i = 0;
int len = cmdLine.Length();
while (i < len)
{
// Skip whitespace
while ((i < len) && wxIsspace(cmdLine.GetChar(i)))
i ++;
if (i < len)
{
if (cmdLine.GetChar(i) == wxT('"')) // We found the start of a string
{
i ++;
int first = i;
while ((i < len) && (cmdLine.GetChar(i) != wxT('"')))
i ++;
wxString arg(cmdLine.Mid(first, (i - first)));
args.Add(arg);
count ++;
if (i < len)
i ++; // Skip past 2nd quote
}
else // Unquoted argument
{
int first = i;
while ((i < len) && !wxIsspace(cmdLine.GetChar(i)))
i ++;
wxString arg(cmdLine.Mid(first, (i - first)));
args.Add(arg);
count ++;
}
}
}
wxTheApp->argv = new wxChar*[count + 1];
for (i = 0; i < count; i++)
{
wxString arg(args[i]);
wxTheApp->argv[i] = copystring((const wxChar*)arg);
}
wxTheApp->argv[count] = NULL; // argv[] is a NULL-terminated list
wxTheApp->argc = count;
}
//// Cleans up any wxWindows internal structures left lying around
void wxApp::CleanUp()
{
//// COMMON CLEANUP
#if wxUSE_LOG
// flush the logged messages if any and install a 'safer' log target: the
// default one (wxLogGui) can't be used after the resources are freed just
// below and the user suppliedo ne might be even more unsafe (using any
// wxWindows GUI function is unsafe starting from now)
wxLog::DontCreateOnDemand();
// this will flush the old messages if any
delete wxLog::SetActiveTarget(new wxLogStderr);
#endif // wxUSE_LOG
// One last chance for pending objects to be cleaned up
wxTheApp->DeletePendingObjects();
wxModule::CleanUpModules();
#if wxUSE_WX_RESOURCES
wxCleanUpResourceSystem();
// wxDefaultResourceTable->ClearTable();
#endif
wxDeleteStockObjects();
// Destroy all GDI lists, etc.
wxDeleteStockLists();
delete wxTheColourDatabase;
wxTheColourDatabase = NULL;
wxBitmap::CleanUpHandlers();
delete[] wxBuffer;
wxBuffer = NULL;
//// WINDOWS-SPECIFIC CLEANUP
wxSetKeyboardHook(FALSE);
#if wxUSE_PENWINDOWS
wxCleanUpPenWin();
#endif
if (wxSTD_FRAME_ICON)
DestroyIcon(wxSTD_FRAME_ICON);
if (wxSTD_MDICHILDFRAME_ICON)
DestroyIcon(wxSTD_MDICHILDFRAME_ICON);
if (wxSTD_MDIPARENTFRAME_ICON)
DestroyIcon(wxSTD_MDIPARENTFRAME_ICON);
if (wxDEFAULT_FRAME_ICON)
DestroyIcon(wxDEFAULT_FRAME_ICON);
if (wxDEFAULT_MDICHILDFRAME_ICON)
DestroyIcon(wxDEFAULT_MDICHILDFRAME_ICON);
if (wxDEFAULT_MDIPARENTFRAME_ICON)
DestroyIcon(wxDEFAULT_MDIPARENTFRAME_ICON);
if ( wxDisableButtonBrush )
::DeleteObject( wxDisableButtonBrush );
#if wxUSE_OLE
::OleUninitialize();
#endif
#if wxUSE_CTL3D
Ctl3dUnregister(wxhInstance);
#endif
if (wxWinHandleList)
delete wxWinHandleList;
// GL: I'm annoyed ... I don't know where to put this and I don't want to
// create a module for that as it's part of the core.
delete wxPendingEvents;
#if wxUSE_THREADS
delete wxPendingEventsLocker;
// If we don't do the following, we get an apparent memory leak.
((wxEvtHandler&) wxDefaultValidator).ClearEventLocker();
#endif
wxClassInfo::CleanUpClasses();
delete wxTheApp;
wxTheApp = NULL;
#if (defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING) || wxUSE_DEBUG_CONTEXT
// At this point we want to check if there are any memory
// blocks that aren't part of the wxDebugContext itself,
// as a special case. Then when dumping we need to ignore
// wxDebugContext, too.
if (wxDebugContext::CountObjectsLeft(TRUE) > 0)
{
wxLogMessage(wxT("There were memory leaks."));
wxDebugContext::Dump();
wxDebugContext::PrintStatistics();
}
// wxDebugContext::SetStream(NULL, NULL);
#endif
#if wxUSE_LOG
// do it as the very last thing because everything else can log messages
delete wxLog::SetActiveTarget(NULL);
#endif // wxUSE_LOG
}
//----------------------------------------------------------------------
// Entry point helpers, used by wxPython
//----------------------------------------------------------------------
int WXDLLEXPORT wxEntryStart( int WXUNUSED(argc), char** WXUNUSED(argv) )
{
return wxApp::Initialize();
}
int WXDLLEXPORT wxEntryInitGui()
{
wxTheApp->OnInitGui();
return 0;
}
void WXDLLEXPORT wxEntryCleanup()
{
wxApp::CleanUp();
}
#if !defined(_WINDLL) || (defined(_WINDLL) && defined(WXMAKINGDLL))
// temporarily disable this warning which would be generated in release builds
// because of __try
#ifdef __VISUALC__
#pragma warning(disable: 4715) // not all control paths return a value
#endif // Visual C++
//----------------------------------------------------------------------
// Main wxWindows entry point
//----------------------------------------------------------------------
int wxEntry(WXHINSTANCE hInstance,
WXHINSTANCE WXUNUSED(hPrevInstance),
char *lpCmdLine,
int nCmdShow,
bool enterLoop)
{
// do check for memory leaks on program exit
// (another useful flag is _CRTDBG_DELAY_FREE_MEM_DF which doesn't free
// deallocated memory which may be used to simulate low-memory condition)
wxCrtSetDbgFlag(_CRTDBG_LEAK_CHECK_DF);
#ifdef __MWERKS__
#if (defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING) || wxUSE_DEBUG_CONTEXT
// This seems to be necessary since there are 'rogue'
// objects present at this point (perhaps global objects?)
// Setting a checkpoint will ignore them as far as the
// memory checking facility is concerned.
// Of course you may argue that memory allocated in globals should be
// checked, but this is a reasonable compromise.
wxDebugContext::SetCheckpoint();
#endif
#endif
// take everything into a try-except block in release build
// FIXME other compilers must support Win32 SEH (structured exception
// handling) too, just find the appropriate keyword in their docs!
// Please note that it's _not_ the same as C++ exceptions!
#if !defined(__WXDEBUG__) && defined(__VISUALC__)
#define CATCH_PROGRAM_EXCEPTIONS
__try {
#else
#undef CATCH_PROGRAM_EXCEPTIONS
#endif
wxhInstance = (HINSTANCE) hInstance;
if (!wxEntryStart(0,0))
return 0;
// create the application object or ensure that one already exists
if (!wxTheApp)
{
// The app may have declared a global application object, but we recommend
// the IMPLEMENT_APP macro is used instead, which sets an initializer
// function for delayed, dynamic app object construction.
wxCHECK_MSG( wxApp::GetInitializerFunction(), 0,
wxT("No initializer - use IMPLEMENT_APP macro.") );
wxTheApp = (*wxApp::GetInitializerFunction()) ();
}
wxCHECK_MSG( wxTheApp, 0, wxT("You have to define an instance of wxApp!") );
// save the WinMain() parameters
wxTheApp->ConvertToStandardCommandArgs(lpCmdLine);
wxTheApp->m_nCmdShow = nCmdShow;
// GUI-specific initialisation. In fact on Windows we don't have any,
// but this call is provided for compatibility across platforms.
wxEntryInitGui();
// We really don't want timestamps by default, because it means
// we can't simply double-click on the error message and get to that
// line in the source. So VC++ at least, let's have a sensible default.
#ifdef __VISUALC__
wxLog::SetTimestamp(NULL);
#endif
int retValue = 0;
if ( wxTheApp->OnInit() )
{
if ( enterLoop )
{
retValue = wxTheApp->OnRun();
}
else
// We want to initialize, but not run or exit immediately.
return 1;
}
//else: app initialization failed, so we skipped OnRun()
wxWindow *topWindow = wxTheApp->GetTopWindow();
if ( topWindow )
{
// Forcibly delete the window.
if ( topWindow->IsKindOf(CLASSINFO(wxFrame)) ||
topWindow->IsKindOf(CLASSINFO(wxDialog)) )
{
topWindow->Close(TRUE);
wxTheApp->DeletePendingObjects();
}
else
{
delete topWindow;
wxTheApp->SetTopWindow(NULL);
}
}
wxTheApp->OnExit();
wxEntryCleanup();
return retValue;
#ifdef CATCH_PROGRAM_EXCEPTIONS
}
__except ( EXCEPTION_EXECUTE_HANDLER ) {
/*
if ( wxTheApp )
wxTheApp->OnFatalException();
*/
// using wxLog would be unsafe here
::MessageBox(NULL,
_("Unrecoverable program error detected: "
" the application will terminate."),
_("Fatal Error"),
MB_APPLMODAL | MB_ICONSTOP | MB_OK);
::ExitProcess(3); // the same exit code as abort()
// NOTREACHED
}
#endif // CATCH_PROGRAM_EXCEPTIONS
}
// restore warning state
#ifdef __VISUALC__
#pragma warning(default: 4715) // not all control paths return a value
#endif // Visual C++
#else /* _WINDLL */
//----------------------------------------------------------------------
// Entry point for wxWindows + the App in a DLL
//----------------------------------------------------------------------
int wxEntry(WXHINSTANCE hInstance)
{
wxhInstance = (HINSTANCE) hInstance;
wxEntryStart(0, 0);
// The app may have declared a global application object, but we recommend
// the IMPLEMENT_APP macro is used instead, which sets an initializer function
// for delayed, dynamic app object construction.
if (!wxTheApp)
{
wxCHECK_MSG( wxApp::GetInitializerFunction(), 0,
"No initializer - use IMPLEMENT_APP macro." );
wxTheApp = (* wxApp::GetInitializerFunction()) ();
}
wxCHECK_MSG( wxTheApp, 0, "You have to define an instance of wxApp!" );
wxTheApp->argc = 0;
wxTheApp->argv = NULL;
wxEntryInitGui();
wxTheApp->OnInit();
wxWindow *topWindow = wxTheApp->GetTopWindow();
if ( topWindow && topWindow->GetHWND())
{
topWindow->Show(TRUE);
}
return 1;
}
#endif // _WINDLL
//// Static member initialization
wxAppInitializerFunction wxAppBase::m_appInitFn = (wxAppInitializerFunction) NULL;
wxApp::wxApp()
{
m_topWindow = NULL;
wxTheApp = this;
m_wantDebugOutput = TRUE;
argc = 0;
argv = NULL;
m_printMode = wxPRINT_WINDOWS;
m_exitOnFrameDelete = TRUE;
m_auto3D = TRUE;
}
wxApp::~wxApp()
{
// Delete command-line args
int i;
for (i = 0; i < argc; i++)
{
delete[] argv[i];
}
delete[] argv;
}
bool wxApp::Initialized()
{
#ifndef _WINDLL
if (GetTopWindow())
return TRUE;
else
return FALSE;
#endif
#ifdef _WINDLL // Assume initialized if DLL (no way of telling)
return TRUE;
#endif
}
/*
* Get and process a message, returning FALSE if WM_QUIT
* received (and also set the flag telling the app to exit the main loop)
*
*/
bool wxApp::DoMessage()
{
BOOL rc = ::GetMessage(&s_currentMsg, (HWND) NULL, 0, 0);
if ( rc == 0 )
{
// got WM_QUIT
m_keepGoing = FALSE;
return FALSE;
}
else if ( rc == -1 )
{
// should never happen, but let's test for it nevertheless
wxLogLastError("GetMessage");
}
else
{
#if wxUSE_THREADS
wxASSERT_MSG( wxThread::IsMain(),
wxT("only the main thread can process Windows messages") );
static bool s_hadGuiLock = TRUE;
static wxMsgArray s_aSavedMessages;
// if a secondary thread owns is doing GUI calls, save all messages for
// later processing - we can't process them right now because it will
// lead to recursive library calls (and we're not reentrant)
if ( !wxGuiOwnedByMainThread() )
{
s_hadGuiLock = FALSE;
// leave out WM_COMMAND messages: too dangerous, sometimes
// the message will be processed twice
if ( !wxIsWaitingForThread() ||
s_currentMsg.message != WM_COMMAND )
{
s_aSavedMessages.Add(s_currentMsg);
}
return TRUE;
}
else
{
// have we just regained the GUI lock? if so, post all of the saved
// messages
//
// FIXME of course, it's not _exactly_ the same as processing the
// messages normally - expect some things to break...
if ( !s_hadGuiLock )
{
s_hadGuiLock = TRUE;
size_t count = s_aSavedMessages.Count();
for ( size_t n = 0; n < count; n++ )
{
MSG& msg = s_aSavedMessages[n];
if ( !ProcessMessage((WXMSG *)&msg) )
{
::TranslateMessage(&msg);
::DispatchMessage(&msg);
}
}
s_aSavedMessages.Empty();
}
}
#endif // wxUSE_THREADS
// Process the message
if ( !ProcessMessage((WXMSG *)&s_currentMsg) )
{
::TranslateMessage(&s_currentMsg);
::DispatchMessage(&s_currentMsg);
}
}
return TRUE;
}
/*
* Keep trying to process messages until WM_QUIT
* received.
*
* If there are messages to be processed, they will all be
* processed and OnIdle will not be called.
* When there are no more messages, OnIdle is called.
* If OnIdle requests more time,
* it will be repeatedly called so long as there are no pending messages.
* A 'feature' of this is that once OnIdle has decided that no more processing
* is required, then it won't get processing time until further messages
* are processed (it'll sit in DoMessage).
*/
int wxApp::MainLoop()
{
m_keepGoing = TRUE;
while ( m_keepGoing )
{
#if wxUSE_THREADS
wxMutexGuiLeaveOrEnter();
#endif // wxUSE_THREADS
while ( !Pending() && ProcessIdle() )
;
// a message came or no more idle processing to do
DoMessage();
}
return s_currentMsg.wParam;
}
// Returns TRUE if more time is needed.
bool wxApp::ProcessIdle()
{
wxIdleEvent event;
event.SetEventObject(this);
ProcessEvent(event);
return event.MoreRequested();
}
void wxApp::ExitMainLoop()
{
// VZ: why not ::PostQuitMessage()?
m_keepGoing = FALSE;
}
bool wxApp::Pending()
{
return ::PeekMessage(&s_currentMsg, 0, 0, 0, PM_NOREMOVE) != 0;
}
void wxApp::Dispatch()
{
DoMessage();
}
/*
* Give all windows a chance to preprocess
* the message. Some may have accelerator tables, or have
* MDI complications.
*/
bool wxApp::ProcessMessage(WXMSG *wxmsg)
{
MSG *msg = (MSG *)wxmsg;
HWND hWnd = msg->hwnd;
wxWindow *wndThis = wxGetWindowFromHWND((WXHWND)hWnd);
#if wxUSE_TOOLTIPS
// we must relay WM_MOUSEMOVE events to the tooltip ctrl if we want it to
// popup the tooltip bubbles
if ( wndThis && (msg->message == WM_MOUSEMOVE) )
{
wxToolTip *tt = wndThis->GetToolTip();
if ( tt )
{
tt->RelayEvent(wxmsg);
}
}
#endif // wxUSE_TOOLTIPS
// Try translations first; find the youngest window with
// a translation table.
wxWindow *wnd;
for ( wnd = wndThis; wnd; wnd = wnd->GetParent() )
{
if ( wnd->MSWTranslateMessage(wxmsg) )
return TRUE;
}
// Anyone for a non-translation message? Try youngest descendants first.
for ( wnd = wndThis; wnd; wnd = wnd->GetParent() )
{
if ( wnd->MSWProcessMessage(wxmsg) )
return TRUE;
}
return FALSE;
}
void wxApp::OnIdle(wxIdleEvent& event)
{
static bool s_inOnIdle = FALSE;
// Avoid recursion (via ProcessEvent default case)
if ( s_inOnIdle )
return;
s_inOnIdle = TRUE;
// If there are pending events, we must process them: pending events
// are either events to the threads other than main or events posted
// with wxPostEvent() functions
// GRG: I have moved this here so that all pending events are processed
// before starting to delete any objects. This behaves better (in
// particular, wrt wxPostEvent) and is coherent with wxGTK's current
// behaviour. Changed Feb/2000 before 2.1.14
ProcessPendingEvents();
// 'Garbage' collection of windows deleted with Close().
DeletePendingObjects();
#if wxUSE_LOG
// flush the logged messages if any
wxLog::FlushActive();
#endif // wxUSE_LOG
// Send OnIdle events to all windows
if ( SendIdleEvents() )
{
// SendIdleEvents() returns TRUE if at least one window requested more
// idle events
event.RequestMore(TRUE);
}
s_inOnIdle = FALSE;
}
// Send idle event to all top-level windows
bool wxApp::SendIdleEvents()
{
bool needMore = FALSE;
wxWindowList::Node* node = wxTopLevelWindows.GetFirst();
while (node)
{
wxWindow* win = node->GetData();
if (SendIdleEvents(win))
needMore = TRUE;
node = node->GetNext();
}
return needMore;
}
// Send idle event to window and all subwindows
bool wxApp::SendIdleEvents(wxWindow* win)
{
bool needMore = FALSE;
wxIdleEvent event;
event.SetEventObject(win);
win->GetEventHandler()->ProcessEvent(event);
if (event.MoreRequested())
needMore = TRUE;
wxNode* node = win->GetChildren().First();
while (node)
{
wxWindow* win = (wxWindow*) node->Data();
if (SendIdleEvents(win))
needMore = TRUE;
node = node->Next();
}
return needMore;
}
void wxApp::DeletePendingObjects()
{
wxNode *node = wxPendingDelete.First();
while (node)
{
wxObject *obj = (wxObject *)node->Data();
delete obj;
if (wxPendingDelete.Member(obj))
delete node;
// Deleting one object may have deleted other pending
// objects, so start from beginning of list again.
node = wxPendingDelete.First();
}
}
void wxApp::OnEndSession(wxCloseEvent& WXUNUSED(event))
{
if (GetTopWindow())
GetTopWindow()->Close(TRUE);
}
// 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);
}
}
/* static */
int wxApp::GetComCtl32Version()
{
// cache the result
static int s_verComCtl32 = -1;
wxCRIT_SECT_DECLARE(csComCtl32);
wxCRIT_SECT_LOCKER(lock, csComCtl32);
if ( s_verComCtl32 == -1 )
{
// initally assume no comctl32.dll at all
s_verComCtl32 = 0;
// do we have it?
HMODULE hModuleComCtl32 = ::GetModuleHandle(wxT("COMCTL32"));
// if so, then we can check for the version
if ( hModuleComCtl32 )
{
// try to use DllGetVersion() if available in _headers_
#ifdef DLLVER_PLATFORM_WINDOWS // defined in shlwapi.h
DLLGETVERSIONPROC pfnDllGetVersion = (DLLGETVERSIONPROC)
::GetProcAddress(hModuleComCtl32, _T("DllGetVersion"));
if ( pfnDllGetVersion )
{
DLLVERSIONINFO dvi;
dvi.cbSize = sizeof(dvi);
HRESULT hr = (*pfnDllGetVersion)(&dvi);
if ( FAILED(hr) )
{
wxLogApiError(_T("DllGetVersion"), hr);
}
else
{
// this is incompatible with _WIN32_IE values, but
// compatible with the other values returned by
// GetComCtl32Version()
s_verComCtl32 = 100*dvi.dwMajorVersion +
dvi.dwMinorVersion;
}
}
#endif
// DllGetVersion() unavailable either during compile or
// run-time, try to guess the version otherwise
if ( !s_verComCtl32 )
{
// InitCommonControlsEx is unique to 4.70 and later
FARPROC theProc = ::GetProcAddress
(
hModuleComCtl32,
#if defined(__BORLANDC__) && (__BORLANDC__ <= 0x520)
"InitCommonControlsEx"
#else
_T("InitCommonControlsEx")
#endif
);
if ( !theProc )
{
// not found, must be 4.00
s_verComCtl32 = 400;
}
else
{
// many symbols appeared in comctl32 4.71, could use
// any of them except may be DllInstall
theProc = ::GetProcAddress
(
hModuleComCtl32,
#if defined(__BORLANDC__) && (__BORLANDC__ <= 0x520)
"InitializeFlatSB"
#else
_T("InitializeFlatSB")
#endif
);
if ( !theProc )
{
// not found, must be 4.70
s_verComCtl32 = 470;
}
else
{
// found, must be 4.71
s_verComCtl32 = 471;
}
}
}
}
}
return s_verComCtl32;
}
void wxExit()
{
wxLogError(_("Fatal error: exiting"));
wxApp::CleanUp();
exit(0);
}
// Yield to incoming messages
bool wxYield()
{
// disable log flushing from here because a call to wxYield() shouldn't
// normally result in message boxes popping up &c
wxLog::Suspend();
// 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;
while ( PeekMessage(&msg, (HWND)0, 0, 0, PM_NOREMOVE) &&
msg.message != WM_QUIT )
{
#if wxUSE_THREADS
wxMutexGuiLeaveOrEnter();
#endif // wxUSE_THREADS
if ( !wxTheApp->DoMessage() )
break;
}
// If they are pending events, we must process them.
if (wxTheApp)
wxTheApp->ProcessPendingEvents();
// let the logs be flashed again
wxLog::Resume();
return TRUE;
}
//-----------------------------------------------------------------------------
// wxWakeUpIdle
//-----------------------------------------------------------------------------
void wxWakeUpIdle()
{
// Send the top window a dummy message so idle handler processing will
// start up again. Doing it this way ensures that the idle handler
// wakes up in the right thread (see also wxWakeUpMainThread() which does
// the same for the main app thread only)
wxWindow *topWindow = wxTheApp->GetTopWindow();
if ( topWindow )
{
if ( !::PostMessage(GetHwndOf(topWindow), WM_NULL, 0, 0) )
{
// should never happen
wxLogLastError("PostMessage(WM_NULL)");
}
}
}
//-----------------------------------------------------------------------------
wxIcon
wxApp::GetStdIcon(int which) const
{
switch(which)
{
case wxICON_INFORMATION:
return wxIcon("wxICON_INFO");
case wxICON_QUESTION:
return wxIcon("wxICON_QUESTION");
case wxICON_EXCLAMATION:
return wxIcon("wxICON_WARNING");
default:
wxFAIL_MSG(wxT("requested non existent standard icon"));
// still fall through
case wxICON_HAND:
return wxIcon("wxICON_ERROR");
}
}
// For some reason, with MSVC++ 1.5, WinMain isn't linked in properly
// if in a separate file. So include it here to ensure it's linked.
#if (defined(__VISUALC__) && !defined(__WIN32__)) || (defined(__GNUWIN32__) && !defined(__TWIN32__) && !defined(WXMAKINGDLL))
#include "main.cpp"
#endif
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