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4a9968f92de93e099f698b51fe18058b6c4d0687
wxWidgets/src/msw/app.cpp
Vadim Zeitlin 4a9968f92d more thread fixes 
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@1421 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
1999-01-17 22:42:06 +00:00

1141 lines
29 KiB
C++
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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
/////////////////////////////////////////////////////////////////////////////
#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"
#endif
#include "wx/msw/private.h"
#include "wx/log.h"
#include "wx/module.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
// To UG: there's no point in putting this #if here
// if you don't do the same for the Ole calls further down.
// Also, OLE is used not just for drag and drop (it's used by automatn.cpp).
// #if wxUSE_DRAG_AND_DROP
#if !defined(__GNUWIN32__) && !defined(__SC__)
#include <ole2.h>
#endif
// #endif
#include <string.h>
#include <ctype.h>
#if defined(__WIN95__) && !defined(__GNUWIN32__)
#include <commctrl.h>
#endif
// use debug CRT functions for memory leak detections in VC++ if we're not
// using wxWindows own methods
#if defined(__WXDEBUG__) && defined(_MSC_VER) && !wxUSE_GLOBAL_MEMORY_OPERATORS && !defined(__NO_VC_CRTDBG__)
#define wxUSE_VC_CRTDBG
#else
#undef wxUSE_VC_CRTDBG
#endif
#ifdef wxUSE_VC_CRTDBG
// VC++ uses this macro as debug/release mode indicator
#ifndef _DEBUG
#define _DEBUG
#endif
/* Need to undef new if including crtdbg.h */
#ifdef new
#undef new
#endif
#include <crtdbg.h>
#if defined(__WXDEBUG__) && wxUSE_GLOBAL_MEMORY_OPERATORS && wxUSE_DEBUG_NEW_ALWAYS
#define new new(__FILE__,__LINE__)
#endif
#endif // wxUSE_VC_CRTDBG
extern char *wxBuffer;
extern char *wxOsVersion;
extern wxList *wxWinHandleList;
extern wxList WXDLLEXPORT wxPendingDelete;
extern void wxSetKeyboardHook(bool doIt);
extern wxCursor *g_globalCursor;
HINSTANCE wxhInstance = 0;
static MSG s_currentMsg;
wxApp *wxTheApp = NULL;
// @@ why not const? and not static?
char wxFrameClassName[] = "wxFrameClass";
char wxMDIFrameClassName[] = "wxMDIFrameClass";
char wxMDIChildFrameClassName[] = "wxMDIChildFrameClass";
char wxPanelClassName[] = "wxPanelClass";
char wxCanvasClassName[] = "wxCanvasClass";
HICON wxSTD_FRAME_ICON = NULL;
HICON wxSTD_MDICHILDFRAME_ICON = NULL;
HICON wxSTD_MDIPARENTFRAME_ICON = NULL;
HICON wxDEFAULT_FRAME_ICON = NULL;
HICON wxDEFAULT_MDICHILDFRAME_ICON = NULL;
HICON wxDEFAULT_MDIPARENTFRAME_ICON = NULL;
HBRUSH wxDisableButtonBrush = 0;
LRESULT APIENTRY wxWndProc(HWND, UINT, WPARAM, LPARAM);
#if !USE_SHARED_LIBRARY
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()
#endif
long wxApp::sm_lastMessageTime = 0;
#ifdef __WIN95__
static HINSTANCE gs_hRichEdit = NULL;
#endif
//// 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 char[1500];
#ifdef wxUSE_VC_CRTDBG
// 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)
_CrtSetDbgFlag(_CrtSetDbgFlag(_CRTDBG_REPORT_FLAG) | _CRTDBG_LEAK_CHECK_DF);
#endif // debug build under MS VC++
wxClassInfo::InitializeClasses();
#if wxUSE_RESOURCES
wxGetResource("wxWindows", "OsVersion", &wxOsVersion);
#endif
wxTheColourDatabase = new wxColourDatabase(wxKEY_STRING);
wxTheColourDatabase->Initialize();
wxInitializeStockLists();
wxInitializeStockObjects();
#if wxUSE_WX_RESOURCES
wxInitializeResourceSystem();
#endif
wxBitmap::InitStandardHandlers();
#if defined(__WIN95__)
InitCommonControls();
gs_hRichEdit = LoadLibrary("RICHED32.DLL");
if (gs_hRichEdit == NULL)
{
wxMessageBox("Could not initialise Rich Edit DLL");
}
#endif
int iMsg = 96;
// for OLE, enlarge message queue to be as large as possible
while (!SetMessageQueue(iMsg) && (iMsg -= 8));
/*
DWORD dwOleVer;
dwOleVer = CoBuildVersion();
// check the OLE library version
if (rmm != HIWORD(dwOleVer))
{
wxMessageBox("Incorrect version of OLE libraries.");
return FALSE;
}
*/
#if !defined(__GNUWIN32__) && !defined(__SC__)
// we need to initialize OLE library
if ( FAILED(::OleInitialize(NULL)) )
wxFatalError(_("Cannot initialize OLE"));
#endif
#if CTL3D
if (!Ctl3dRegister(wxhInstance))
wxFatalError("Cannot register CTL3D");
Ctl3dAutoSubclass(wxhInstance);
#endif
g_globalCursor = new wxCursor;
wxSTD_FRAME_ICON = LoadIcon(wxhInstance, "wxSTD_FRAME");
wxSTD_MDIPARENTFRAME_ICON = LoadIcon(wxhInstance, "wxSTD_MDIPARENTFRAME");
wxSTD_MDICHILDFRAME_ICON = LoadIcon(wxhInstance, "wxSTD_MDICHILDFRAME");
wxDEFAULT_FRAME_ICON = LoadIcon(wxhInstance, "wxDEFAULT_FRAME");
wxDEFAULT_MDIPARENTFRAME_ICON = LoadIcon(wxhInstance, "wxDEFAULT_MDIPARENTFRAME");
wxDEFAULT_MDICHILDFRAME_ICON = LoadIcon(wxhInstance, "wxDEFAULT_MDICHILDFRAME");
RegisterWindowClasses();
// Create the brush for disabling bitmap buttons
LOGBRUSH lb ;
lb.lbStyle = BS_PATTERN;
lb.lbHatch = (int)LoadBitmap( wxhInstance, "wxDISABLE_BUTTON_BITMAP" ) ;
wxDisableButtonBrush = ::CreateBrushIndirect( & lb ) ;
::DeleteObject( (HGDIOBJ)lb.lbHatch ) ;
#if wxUSE_PENWINDOWS
wxRegisterPenWin();
#endif
wxWinHandleList = new wxList(wxKEY_INTEGER);
// This is to foil optimizations in Visual C++ that
// throw out dummy.obj.
#if defined(_MSC_VER) && !defined(WXMAKINGDLL)
extern char wxDummyChar;
if (wxDummyChar) wxDummyChar++;
#endif
wxSetKeyboardHook(TRUE);
wxModule::RegisterModules();
if (!wxModule::InitializeModules())
return FALSE;
return TRUE;
}
//// RegisterWindowClasses
bool wxApp::RegisterWindowClasses()
{
///////////////////////////////////////////////////////////////////////
// Register the frame window class.
WNDCLASS wndclass; // Structure used to register Windows class.
wndclass.style = CS_HREDRAW | CS_VREDRAW;
wndclass.lpfnWndProc = (WNDPROC)wxWndProc;
wndclass.cbClsExtra = 0;
wndclass.cbWndExtra = sizeof( DWORD ); // was 4
wndclass.hInstance = wxhInstance;
wndclass.hIcon = NULL; // wxSTD_FRAME_ICON;
wndclass.hCursor = LoadCursor( NULL, IDC_ARROW );
wndclass.hbrBackground = (HBRUSH)(COLOR_APPWORKSPACE+1) ;
// wndclass.hbrBackground = GetStockObject( WHITE_BRUSH );
wndclass.lpszMenuName = NULL;
#ifdef _MULTIPLE_INSTANCES
sprintf( wxFrameClassName,"wxFrameClass%d", wxhInstance );
#endif
wndclass.lpszClassName = wxFrameClassName;
if (!RegisterClass( &wndclass ))
{
// wxFatalError("Can't register Frame Window class");
}
///////////////////////////////////////////////////////////////////////
// Register the MDI frame window class.
WNDCLASS wndclass1; // Structure used to register Windows class.
wndclass1.style = CS_HREDRAW | CS_VREDRAW;
wndclass1.lpfnWndProc = (WNDPROC)wxWndProc;
wndclass1.cbClsExtra = 0;
wndclass1.cbWndExtra = sizeof( DWORD ); // was 4
wndclass1.hInstance = wxhInstance;
wndclass1.hIcon = NULL; // wxSTD_MDIPARENTFRAME_ICON;
wndclass1.hCursor = LoadCursor( NULL, IDC_ARROW );
// wndclass1.hbrBackground = (HBRUSH)(COLOR_APPWORKSPACE+1) ;
wndclass1.hbrBackground = NULL;
wndclass1.lpszMenuName = NULL;
wndclass1.lpszClassName = wxMDIFrameClassName;
if (!RegisterClass( &wndclass1 ))
{
// wxFatalError("Can't register MDI Frame window class");
// return FALSE;
}
///////////////////////////////////////////////////////////////////////
// Register the MDI child frame window class.
WNDCLASS wndclass4; // Structure used to register Windows class.
wndclass4.style = CS_HREDRAW | CS_VREDRAW;
wndclass4.lpfnWndProc = (WNDPROC)wxWndProc;
wndclass4.cbClsExtra = 0;
wndclass4.cbWndExtra = sizeof( DWORD ); // was 4
wndclass4.hInstance = wxhInstance;
wndclass4.hIcon = NULL; // wxSTD_MDICHILDFRAME_ICON;
wndclass4.hCursor = LoadCursor( NULL, IDC_ARROW );
// TODO: perhaps this should be NULL so that Windows doesn't
// paint the background itself (would OnEraseBackground duplicate
// this?)
wndclass4.hbrBackground = (HBRUSH)(COLOR_WINDOW+1) ;
// wndclass4.hbrBackground = NULL;
wndclass4.lpszMenuName = NULL;
wndclass4.lpszClassName = wxMDIChildFrameClassName;
if (!RegisterClass( &wndclass4 ))
{
// wxFatalError("Can't register MDI child frame window class");
// return FALSE;
}
///////////////////////////////////////////////////////////////////////
// Register the panel window class.
WNDCLASS wndclass2; // Structure used to register Windows class.
memset(&wndclass2, 0, sizeof(WNDCLASS)); // start with NULL defaults
// Use CS_OWNDC to avoid messing about restoring the context
// for every graphic operation.
wndclass2.style = CS_HREDRAW | CS_VREDRAW;
wndclass2.lpfnWndProc = (WNDPROC)wxWndProc;
wndclass2.cbClsExtra = 0;
wndclass2.cbWndExtra = sizeof( DWORD ); // was 4
wndclass2.hInstance = wxhInstance;
wndclass2.hIcon = NULL;
wndclass2.hCursor = NULL;
// wndclass2.hbrBackground = (HBRUSH)(COLOR_BTNFACE+1) ;
wndclass2.hbrBackground = (HBRUSH) GetStockObject( LTGRAY_BRUSH );
wndclass2.lpszMenuName = NULL;
wndclass2.lpszClassName = wxPanelClassName;
if (!RegisterClass( &wndclass2 ))
{
// wxFatalError("Can't register Panel Window class");
// return FALSE;
}
///////////////////////////////////////////////////////////////////////
// Register the canvas and textsubwindow class name
WNDCLASS wndclass3; // Structure used to register Windows class.
memset(&wndclass3, 0, sizeof(WNDCLASS)); // start with NULL defaults
// Use CS_OWNDC to avoid messing about restoring the context
// for every graphic operation.
// wndclass3.style = CS_HREDRAW | CS_VREDRAW | CS_OWNDC | CS_DBLCLKS ;
// wxWin 2.0
wndclass3.style = CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS ;
wndclass3.lpfnWndProc = (WNDPROC)wxWndProc;
wndclass3.cbClsExtra = 0;
wndclass3.cbWndExtra = sizeof( DWORD ); // was 4
wndclass3.hInstance = wxhInstance;
wndclass3.hIcon = NULL;
wndclass3.hCursor = NULL;
// wndclass3.hbrBackground = (HBRUSH)(COLOR_WINDOW+1) ;
wndclass3.hbrBackground = NULL;
wndclass3.lpszMenuName = NULL;
wndclass3.lpszClassName = wxCanvasClassName;
if (!RegisterClass( &wndclass3))
{
// wxFatalError("Can't register Canvas class");
// 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
char name[260]; // 260 is MAX_PATH value from windef.h
::GetModuleFileName(wxhInstance, name, WXSIZEOF(name));
// GNUWIN32 already fills in the first arg with the application name.
#if !defined(__GNUWIN32__)
args.Add(name);
count ++;
#endif
strcpy(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) && isspace(cmdLine.GetChar(i)))
i ++;
if (i < len)
{
if (cmdLine.GetChar(i) == '"') // We found the start of a string
{
i ++;
int first = i;
while ((i < len) && (cmdLine.GetChar(i) != '"'))
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) && !isspace(cmdLine.GetChar(i)))
i ++;
wxString arg(cmdLine.Mid(first, (i - first)));
args.Add(arg);
count ++;
}
}
}
wxTheApp->argv = new char*[count + 1];
for (i = 0; i < count; i++)
{
wxString arg(args[i]);
wxTheApp->argv[i] = copystring((const char*)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
wxModule::CleanUpModules();
#if wxUSE_WX_RESOURCES
wxCleanUpResourceSystem();
// wxDefaultResourceTable->ClearTable();
#endif
// Indicate that the cursor can be freed,
// so that cursor won't be deleted by deleting
// the bitmap list before g_globalCursor goes out
// of scope (double deletion of the cursor).
wxSetCursor(wxNullCursor);
delete g_globalCursor;
wxDeleteStockObjects() ;
// Destroy all GDI lists, etc.
wxDeleteStockLists();
delete wxTheColourDatabase;
wxTheColourDatabase = NULL;
wxBitmap::CleanUpHandlers();
delete[] wxBuffer;
wxBuffer = NULL;
//// WINDOWS-SPECIFIC CLEANUP
wxSetKeyboardHook(FALSE);
#ifdef __WIN95__
if (gs_hRichEdit != NULL)
FreeLibrary(gs_hRichEdit);
#endif
#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 !defined(__GNUWIN32__) && !defined(__SC__)
::OleUninitialize();
#endif
#if CTL3D
Ctl3dUnregister(wxhInstance);
#endif
if (wxWinHandleList)
delete wxWinHandleList ;
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() > 0)
{
wxLogDebug("There were memory leaks.");
wxDebugContext::Dump();
wxDebugContext::PrintStatistics();
}
// wxDebugContext::SetStream(NULL, NULL);
#endif
// do it as the very last thing because everything else can log messages
wxLog::DontCreateOnDemand();
delete wxLog::SetActiveTarget(NULL);
}
#if !defined(_WINDLL) || (defined(_WINDLL) && defined(WXMAKINGDLL))
// temporarily disable this warning
#ifdef _MSC_VER
#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)
{
// 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(_MSC_VER)
#define CATCH_PROGRAM_EXCEPTIONS
__try {
#else
#undef CATCH_PROGRAM_EXCEPTIONS
#endif
wxhInstance = (HINSTANCE) hInstance;
if (!wxApp::Initialize())
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,
"No initializer - use IMPLEMENT_APP macro." );
wxTheApp = (*wxApp::GetInitializerFunction()) ();
}
wxCHECK_MSG( wxTheApp, 0, "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.
wxTheApp->OnInitGui() ;
int retValue = 0;
if ( wxTheApp->OnInit() )
{
if ( enterLoop )
{
retValue = wxTheApp->OnRun();
}
}
//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();
// flush the logged messages if any
wxLog *pLog = wxLog::GetActiveTarget();
if ( pLog != NULL && pLog->HasPendingMessages() )
pLog->Flush();
wxApp::CleanUp();
return retValue;
#ifdef CATCH_PROGRAM_EXCEPTIONS
}
__except ( EXCEPTION_EXECUTE_HANDLER ) {
/*
if ( wxTheApp )
wxTheApp->OnFatalException();
*/
::ExitProcess(3); // the same exit code as abort()
// NOTREACHED
}
#endif // CATCH_PROGRAM_EXCEPTIONS
}
// restore warning state
#ifdef _MSC_VER
#pragma warning(default: 4715) // not all control paths return a value
#endif // Visual C++
#else /* _WINDLL */
//// Entry point for DLLs
int wxEntry(WXHINSTANCE hInstance)
{
wxhInstance = (HINSTANCE) hInstance;
wxApp::Initialize();
// 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)
{
if (!wxApp::GetInitializerFunction())
{
MessageBox(NULL, "No initializer - use IMPLEMENT_APP macro.", "wxWindows Error", MB_APPLMODAL | MB_ICONSTOP | MB_OK);
return 0;
}
wxTheApp = (* wxApp::GetInitializerFunction()) ();
}
if (!wxTheApp) {
MessageBox(NULL, "You have to define an instance of wxApp!", "wxWindows Error", MB_APPLMODAL | MB_ICONSTOP | MB_OK);
return 0;
}
wxTheApp->argc = 0;
wxTheApp->argv = NULL;
wxTheApp->OnInitGui();
wxTheApp->OnInit();
if (wxTheApp->GetTopWindow() && wxTheApp->GetTopWindow()->GetHWND()) {
wxTheApp->GetTopWindow()->Show(TRUE);
}
return 1;
}
#endif // _WINDLL
//// Static member initialization
wxAppInitializerFunction wxApp::m_appInitFn = (wxAppInitializerFunction) NULL;
wxApp::wxApp()
{
m_topWindow = NULL;
wxTheApp = this;
m_className = "";
m_wantDebugOutput = TRUE ;
m_appName = "";
argc = 0;
argv = NULL;
#ifdef __WXMSW__
m_printMode = wxPRINT_WINDOWS;
#else
m_printMode = wxPRINT_POSTSCRIPT;
#endif
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(),
"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);
wxApp::sm_lastMessageTime = s_currentMsg.time; /* MATTHEW: timeStamp impl. */
::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 ( !::PeekMessage(&s_currentMsg, 0, 0, 0, PM_NOREMOVE) &&
ProcessIdle() )
{
}
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()
{
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 *Msg)
{
MSG *msg = (MSG *)Msg;
HWND hWnd;
// Try translations first; find the youngest window with
// a translation table.
for (hWnd = msg->hwnd; hWnd != NULL; hWnd = ::GetParent(hWnd))
{
wxWindow *wnd = wxFindWinFromHandle((WXHWND) hWnd);
if (wnd)
{
if (wnd->MSWTranslateMessage(Msg))
return TRUE;
}
}
// Anyone for a non-translation message? Try youngest descendants first.
for (hWnd = msg->hwnd; hWnd != NULL; hWnd = ::GetParent(hWnd))
{
wxWindow *wnd = wxFindWinFromHandle((WXHWND) hWnd);
if (wnd)
{
if (wnd->MSWProcessMessage(Msg))
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;
// 'Garbage' collection of windows deleted with Close().
DeletePendingObjects();
// flush the logged messages if any
wxLog *pLog = wxLog::GetActiveTarget();
if ( pLog != NULL && pLog->HasPendingMessages() )
pLog->Flush();
// 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;
wxNode* node = wxTopLevelWindows.First();
while (node)
{
wxWindow* win = (wxWindow*) node->Data();
if (SendIdleEvents(win))
needMore = TRUE;
node = node->Next();
}
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& 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);
}
}
wxLog* wxApp::CreateLogTarget()
{
return new wxLogGui;
}
wxWindow* wxApp::GetTopWindow() const
{
if (m_topWindow)
return m_topWindow;
else if (wxTopLevelWindows.Number() > 0)
return (wxWindow*) wxTopLevelWindows.First()->Data();
else
return NULL;
}
int wxApp::GetComCtl32Version() const
{
// have we loaded COMCTL32 yet?
HMODULE theModule = ::GetModuleHandle("COMCTL32");
int version = 0;
// if so, then we can check for the version
if (theModule)
{
// InitCommonControlsEx is unique to 4.7 and later
FARPROC theProc = ::GetProcAddress(theModule, "InitCommonControlsEx");
if (! theProc)
{ // not found, must be 4.00
version = 400;
}
else
{
// The following symbol are unique to 4.71
// DllInstall
// FlatSB_EnableScrollBar FlatSB_GetScrollInfo FlatSB_GetScrollPos
// FlatSB_GetScrollProp FlatSB_GetScrollRange FlatSB_SetScrollInfo
// FlatSB_SetScrollPos FlatSB_SetScrollProp FlatSB_SetScrollRange
// FlatSB_ShowScrollBar
// _DrawIndirectImageList _DuplicateImageList
// InitializeFlatSB
// UninitializeFlatSB
// we could check for any of these - I chose DllInstall
FARPROC theProc = ::GetProcAddress(theModule, "DllInstall");
if (! theProc)
{
// not found, must be 4.70
version = 470;
}
else
{ // found, must be 4.71
version = 471;
}
}
}
return version;
}
void wxExit()
{
wxApp::CleanUp();
FatalAppExit(0, "Fatal error: exiting");
}
// Yield to incoming messages
bool wxYield()
{
MSG msg;
// We want to go back to the main message loop
// if we see a WM_QUIT. (?)
while (PeekMessage(&msg, NULL, 0, 0, PM_NOREMOVE) && msg.message != WM_QUIT)
{
if ( !wxTheApp->DoMessage() )
break;
}
return TRUE;
}
HINSTANCE wxGetInstance()
{
return wxhInstance;
}
// 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(_MSC_VER) && !defined(__WIN32__)) || defined(__GNUWIN32__)
#include "main.cpp"
#endif
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