/////////////////////////////////////////////////////////////////////////////
-// Name: app.cpp
+// Name: src/msw/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
+// Copyright: (c) Julian Smart
+// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
// ===========================================================================
// headers
// ---------------------------------------------------------------------------
-#ifdef __GNUG__
- #pragma implementation "app.h"
-#endif
-
// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"
#endif
#ifndef WX_PRECOMP
+ #include "wx/msw/wrapcctl.h"
+ #include "wx/dynarray.h"
#include "wx/frame.h"
#include "wx/app.h"
#include "wx/utils.h"
#include "wx/dialog.h"
#include "wx/msgdlg.h"
#include "wx/intl.h"
- #include "wx/dynarray.h"
+ #include "wx/crt.h"
+ #include "wx/log.h"
+ #include "wx/module.h"
#endif
-#include "wx/msw/private.h"
-#include "wx/log.h"
-#include "wx/module.h"
+#include "wx/apptrait.h"
+#include "wx/filename.h"
+#include "wx/dynlib.h"
+#include "wx/evtloop.h"
+#include "wx/thread.h"
+#include "wx/scopeguard.h"
+#include "wx/vector.h"
-#if wxUSE_THREADS
- #include "wx/thread.h"
-
- // define the array of MSG strutures
- WX_DECLARE_OBJARRAY(MSG, wxMsgArray);
+#include "wx/msw/private.h"
+#include "wx/msw/dc.h"
+#include "wx/msw/ole/oleutils.h"
+#include "wx/msw/private/timer.h"
- #include "wx/arrimpl.cpp"
+#if wxUSE_TOOLTIPS
+ #include "wx/tooltip.h"
+#endif // wxUSE_TOOLTIPS
- WX_DEFINE_OBJARRAY(wxMsgArray);
-#endif // wxUSE_THREADS
-
-#if wxUSE_WX_RESOURCES
- #include "wx/resource.h"
-#endif
-
-// OLE is used for drag-and-drop, clipboard, OLE Automation...
-#if defined(__GNUWIN32__) || defined(__SC__) || defined(__SALFORDC__)
+// 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(__SYMANTEC__)
#undef wxUSE_OLE
#define wxUSE_OLE 0
#endif // broken compilers
+#if defined(__POCKETPC__) || defined(__SMARTPHONE__)
+ #include <ole2.h>
+ #include <aygshell.h>
+#endif
+
#if wxUSE_OLE
#include <ole2.h>
#endif
#include <string.h>
#include <ctype.h>
-#if (defined(__WIN95__) && !defined(__GNUWIN32__)) || defined(__TWIN32__)
- #include <commctrl.h>
+#include "wx/msw/missing.h"
+
+// instead of including <shlwapi.h> which is not part of the core SDK and not
+// shipped at all with other compilers, we always define the parts of it we
+// need here ourselves
+//
+// NB: DLLVER_PLATFORM_WINDOWS will be defined if shlwapi.h had been somehow
+// included already
+#ifndef DLLVER_PLATFORM_WINDOWS
+ // hopefully we don't need to change packing as DWORDs should be already
+ // correctly aligned
+ struct DLLVERSIONINFO
+ {
+ DWORD cbSize;
+ DWORD dwMajorVersion; // Major version
+ DWORD dwMinorVersion; // Minor version
+ DWORD dwBuildNumber; // Build number
+ DWORD dwPlatformID; // DLLVER_PLATFORM_*
+ };
+
+ typedef HRESULT (CALLBACK* DLLGETVERSIONPROC)(DLLVERSIONINFO *);
+#endif // defined(DLLVERSIONINFO)
+
+#ifndef ATTACH_PARENT_PROCESS
+ #define ATTACH_PARENT_PROCESS ((DWORD)-1)
#endif
-#include "wx/msw/msvcrt.h"
-
// ---------------------------------------------------------------------------
// global variables
// ---------------------------------------------------------------------------
-extern char *wxBuffer;
-extern char *wxOsVersion;
-extern wxList *wxWinHandleList;
-extern wxList WXDLLEXPORT wxPendingDelete;
+#if !defined(__WXMICROWIN__) && !defined(__WXWINCE__)
extern void wxSetKeyboardHook(bool doIt);
-extern wxCursor *g_globalCursor;
-
-HINSTANCE wxhInstance = 0;
-static MSG s_currentMsg;
-wxApp *wxTheApp = NULL;
+#endif
-// FIXME why not const? and not static?
-char wxFrameClassName[] = "wxFrameClass";
-char wxMDIFrameClassName[] = "wxMDIFrameClass";
-char wxMDIChildFrameClassName[] = "wxMDIChildFrameClass";
-char wxPanelClassName[] = "wxPanelClass";
-char wxCanvasClassName[] = "wxCanvasClass";
+// because of mingw32 4.3 bug this struct can't be inside the namespace below:
+// see http://article.gmane.org/gmane.comp.lib.wxwidgets.devel/110282
+struct ClassRegInfo
+{
+ ClassRegInfo(const wxChar *name)
+ : regname(name),
+ regnameNR(regname + wxApp::GetNoRedrawClassSuffix())
+ {
+ }
-HICON wxSTD_FRAME_ICON = (HICON) NULL;
-HICON wxSTD_MDICHILDFRAME_ICON = (HICON) NULL;
-HICON wxSTD_MDIPARENTFRAME_ICON = (HICON) NULL;
+ // the name of the registered class with and without CS_[HV]REDRAW styles
+ wxString regname;
+ wxString regnameNR;
+};
-HICON wxDEFAULT_FRAME_ICON = (HICON) NULL;
-HICON wxDEFAULT_MDICHILDFRAME_ICON = (HICON) NULL;
-HICON wxDEFAULT_MDIPARENTFRAME_ICON = (HICON) NULL;
+namespace
+{
-HBRUSH wxDisableButtonBrush = (HBRUSH) 0;
+wxVector<ClassRegInfo> gs_regClassesInfo;
-LRESULT APIENTRY wxWndProc(HWND, UINT, WPARAM, LPARAM);
+} // anonymous namespace
-#if defined(__WIN95__) && !defined(__TWIN32__)
- #define wxUSE_RICHEDIT 1
-#else
- #define wxUSE_RICHEDIT 0
-#endif
+// ----------------------------------------------------------------------------
+// private functions
+// ----------------------------------------------------------------------------
-#if wxUSE_RICHEDIT
- static HINSTANCE gs_hRichEdit = (HINSTANCE) NULL;
-#endif
+LRESULT WXDLLEXPORT APIENTRY wxWndProc(HWND, UINT, WPARAM, LPARAM);
// ===========================================================================
-// implementation
+// wxGUIAppTraits implementation
// ===========================================================================
-// ---------------------------------------------------------------------------
-// wxApp
-// ---------------------------------------------------------------------------
-
-#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;
-
-//// Initialize
-bool wxApp::Initialize()
+// private class which we use to pass parameters from BeforeChildWaitLoop() to
+// AfterChildWaitLoop()
+struct ChildWaitLoopData
{
- // Some people may wish to use this, but
- // probably it shouldn't be here by default.
-#ifdef __WXDEBUG__
- // wxRedirectIOToConsole();
-#endif
-
- wxBuffer = new char[1500]; // FIXME
-
- 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();
-
-#if wxUSE_RICHEDIT
- gs_hRichEdit = LoadLibrary("RICHED32.DLL");
-
- if (gs_hRichEdit == (HINSTANCE) NULL)
+ ChildWaitLoopData(wxWindowDisabler *wd_, wxWindow *winActive_)
{
- wxLogError(_("Could not initialise Rich Edit DLL"));
+ wd = wd_;
+ winActive = winActive_;
}
-#endif // wxUSE_RICHEDIT
-
-#endif // __WIN95__
- // for OLE, enlarge message queue to be as large as possible
- int iMsg = 96;
- while (!SetMessageQueue(iMsg) && (iMsg -= 8));
+ wxWindowDisabler *wd;
+ wxWindow *winActive;
+};
+void *wxGUIAppTraits::BeforeChildWaitLoop()
+{
/*
- DWORD dwOleVer;
- dwOleVer = CoBuildVersion();
-
- // check the OLE library version
- if (rmm != HIWORD(dwOleVer))
- {
- wxMessageBox("Incorrect version of OLE libraries.");
- return FALSE;
- }
+ We use a dirty hack here to disable all application windows (which we
+ must do because otherwise the calls to wxYield() could lead to some very
+ unexpected reentrancies in the users code) but to avoid losing
+ focus/activation entirely when the child process terminates which would
+ happen if we simply disabled everything using wxWindowDisabler. Indeed,
+ remember that Windows will never activate a disabled window and when the
+ last childs window is closed and Windows looks for a window to activate
+ all our windows are still disabled. There is no way to enable them in
+ time because we don't know when the childs windows are going to be
+ closed, so the solution we use here is to keep one special tiny frame
+ enabled all the time. Then when the child terminates it will get
+ activated and when we close it below -- after reenabling all the other
+ windows! -- the previously active window becomes activated again and
+ everything is ok.
*/
+ wxBeginBusyCursor();
+
+ // first disable all existing windows
+ wxWindowDisabler *wd = new wxWindowDisabler;
+
+ // then create an "invisible" frame: it has minimal size, is positioned
+ // (hopefully) outside the screen and doesn't appear on the taskbar
+ wxWindow *winActive = new wxFrame
+ (
+ wxTheApp->GetTopWindow(),
+ wxID_ANY,
+ wxEmptyString,
+ wxPoint(32600, 32600),
+ wxSize(1, 1),
+ wxDEFAULT_FRAME_STYLE | wxFRAME_NO_TASKBAR
+ );
+ winActive->Show();
+
+ return new ChildWaitLoopData(wd, winActive);
+}
-#if wxUSE_OLE
- // we need to initialize OLE library
- if ( FAILED(::OleInitialize(NULL)) )
- wxLogError(_("Cannot initialize OLE"));
-#endif
-
-#if wxUSE_CTL3D
- if (!Ctl3dRegister(wxhInstance))
- wxLogError("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
+void wxGUIAppTraits::AfterChildWaitLoop(void *dataOrig)
+{
+ wxEndBusyCursor();
- wxWinHandleList = new wxList(wxKEY_INTEGER);
+ ChildWaitLoopData * const data = (ChildWaitLoopData *)dataOrig;
- // 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
+ delete data->wd;
- wxSetKeyboardHook(TRUE);
+ // finally delete the dummy frame and, as wd has been already destroyed and
+ // the other windows reenabled, the activation is going to return to the
+ // window which had had it before
+ data->winActive->Destroy();
- wxModule::RegisterModules();
- if (!wxModule::InitializeModules())
- return FALSE;
- return TRUE;
+ // also delete the temporary data object itself
+ delete data;
}
-//// RegisterWindowClasses
-
-bool wxApp::RegisterWindowClasses()
+#if wxUSE_THREADS
+bool wxGUIAppTraits::DoMessageFromThreadWait()
{
- ///////////////////////////////////////////////////////////////////////
- // Register the frame window class.
- WNDCLASS wndclass; // Structure used to register Windows class.
-
- wndclass.style = CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS ;
- wndclass.lpfnWndProc = (WNDPROC)wxWndProc;
- wndclass.cbClsExtra = 0;
- wndclass.cbWndExtra = sizeof( DWORD ); // was 4
- wndclass.hInstance = wxhInstance;
- wndclass.hIcon = (HICON) NULL; // wxSTD_FRAME_ICON;
- wndclass.hCursor = LoadCursor( (HINSTANCE) 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 ))
+ // we should return false only if the app should exit, i.e. only if
+ // Dispatch() determines that the main event loop should terminate
+ wxEventLoopBase * const evtLoop = wxEventLoop::GetActive();
+ if ( !evtLoop || !evtLoop->Pending() )
{
- // wxFatalError("Can't register Frame Window class");
+ // no events means no quit event
+ return true;
}
- ///////////////////////////////////////////////////////////////////////
- // Register the MDI frame window class.
- WNDCLASS wndclass1; // Structure used to register Windows class.
-
- wndclass1.style = CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS ;
- wndclass1.lpfnWndProc = (WNDPROC)wxWndProc;
- wndclass1.cbClsExtra = 0;
- wndclass1.cbWndExtra = sizeof( DWORD ); // was 4
- wndclass1.hInstance = wxhInstance;
- wndclass1.hIcon = (HICON) NULL; // wxSTD_MDIPARENTFRAME_ICON;
- wndclass1.hCursor = LoadCursor( (HINSTANCE) NULL, IDC_ARROW );
- // wndclass1.hbrBackground = (HBRUSH)(COLOR_APPWORKSPACE+1) ;
- wndclass1.hbrBackground = (HBRUSH) NULL;
- wndclass1.lpszMenuName = NULL;
-
- wndclass1.lpszClassName = wxMDIFrameClassName;
- if (!RegisterClass( &wndclass1 ))
- {
- // wxFatalError("Can't register MDI Frame window class");
- // return FALSE;
- }
+ return evtLoop->Dispatch();
+}
- ///////////////////////////////////////////////////////////////////////
- // Register the MDI child frame window class.
- WNDCLASS wndclass4; // Structure used to register Windows class.
-
- wndclass4.style = CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS ;
- wndclass4.lpfnWndProc = (WNDPROC)wxWndProc;
- wndclass4.cbClsExtra = 0;
- wndclass4.cbWndExtra = sizeof( DWORD ); // was 4
- wndclass4.hInstance = wxhInstance;
- wndclass4.hIcon = (HICON) NULL; // wxSTD_MDICHILDFRAME_ICON;
- wndclass4.hCursor = LoadCursor( (HINSTANCE) 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 ))
+DWORD wxGUIAppTraits::WaitForThread(WXHANDLE hThread, int flags)
+{
+ // We only ever dispatch messages from the main thread and, additionally,
+ // even from the main thread we shouldn't wait for the message if we don't
+ // have a running event loop as we would never remove them from the message
+ // queue then and so we would enter an infinite loop as
+ // MsgWaitForMultipleObjects() keeps returning WAIT_OBJECT_0 + 1.
+ if ( flags == wxTHREAD_WAIT_BLOCK ||
+ !wxIsMainThread() ||
+ !wxEventLoop::GetActive() )
{
- // wxFatalError("Can't register MDI child frame window class");
- // return FALSE;
+ // Simple blocking wait.
+ return DoSimpleWaitForThread(hThread);
}
- ///////////////////////////////////////////////////////////////////////
- // Register the panel window class.
- WNDCLASS wndclass2; // Structure used to register Windows class.
- memset(&wndclass2, 0, sizeof(WNDCLASS)); // start with NULL defaults
- wndclass2.style = CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS ;
- wndclass2.lpfnWndProc = (WNDPROC)wxWndProc;
- wndclass2.cbClsExtra = 0;
- wndclass2.cbWndExtra = sizeof( DWORD ); // was 4
- wndclass2.hInstance = wxhInstance;
- wndclass2.hIcon = (HICON) NULL;
- wndclass2.hCursor = LoadCursor( (HINSTANCE) NULL, IDC_ARROW );
- // 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;
- }
+ return ::MsgWaitForMultipleObjects
+ (
+ 1, // number of objects to wait for
+ (HANDLE *)&hThread, // the objects
+ false, // wait for any objects, not all
+ INFINITE, // no timeout
+ QS_ALLINPUT | // return as soon as there are any events
+ QS_ALLPOSTMESSAGE
+ );
+}
+#endif // wxUSE_THREADS
+
+wxPortId wxGUIAppTraits::GetToolkitVersion(int *majVer, int *minVer) const
+{
+ OSVERSIONINFO info;
+ wxZeroMemory(info);
- ///////////////////////////////////////////////////////////////////////
- // 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 = (HICON) NULL;
- wndclass3.hCursor = LoadCursor( (HINSTANCE) NULL, IDC_ARROW );
- // wndclass3.hbrBackground = (HBRUSH)(COLOR_WINDOW+1) ;
- wndclass3.hbrBackground = (HBRUSH) NULL;
- wndclass3.lpszMenuName = NULL;
- wndclass3.lpszClassName = wxCanvasClassName;
- if (!RegisterClass( &wndclass3))
+ // on Windows, the toolkit version is the same of the OS version
+ // as Windows integrates the OS kernel with the GUI toolkit.
+ info.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
+ if ( ::GetVersionEx(&info) )
{
- // wxFatalError("Can't register Canvas class");
- // return FALSE;
+ if ( majVer )
+ *majVer = info.dwMajorVersion;
+ if ( minVer )
+ *minVer = info.dwMinorVersion;
}
- return TRUE;
+#if defined(__WXHANDHELD__) || defined(__WXWINCE__)
+ return wxPORT_WINCE;
+#else
+ return wxPORT_MSW;
+#endif
}
-//// Convert Windows to argc, argv style
+#if wxUSE_TIMER
-void wxApp::ConvertToStandardCommandArgs(char* lpCmdLine)
+wxTimerImpl *wxGUIAppTraits::CreateTimerImpl(wxTimer *timer)
{
- wxStringList args;
+ return new wxMSWTimerImpl(timer);
+}
- wxString cmdLine(lpCmdLine);
- int count = 0;
+#endif // wxUSE_TIMER
- // Get application name
- char name[260]; // 260 is MAX_PATH value from windef.h
- ::GetModuleFileName(wxhInstance, name, WXSIZEOF(name));
+wxEventLoopBase* wxGUIAppTraits::CreateEventLoop()
+{
+ return new wxEventLoop;
+}
- args.Add(name);
- count++;
+// ---------------------------------------------------------------------------
+// Stuff for using console from the GUI applications
+// ---------------------------------------------------------------------------
- strcpy(name, wxFileNameFromPath(name));
- wxStripExtension(name);
- wxTheApp->SetAppName(name);
+#ifndef __WXWINCE__
- // 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 wxUSE_DYNLIB_CLASS
- 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 ++;
+#include <wx/dynlib.h>
- wxString arg(cmdLine.Mid(first, (i - first)));
+namespace
+{
- args.Add(arg);
- count ++;
+/*
+ Helper class to manipulate console from a GUI app.
- if (i < len)
- i ++; // Skip past 2nd quote
- }
- else // Unquoted argument
- {
- int first = i;
- while ((i < len) && !isspace(cmdLine.GetChar(i)))
- i ++;
+ Notice that console output is available in the GUI app only if:
+ - AttachConsole() returns TRUE (which means it never works under pre-XP)
+ - we have a valid STD_ERROR_HANDLE
+ - command history hasn't been changed since our startup
- wxString arg(cmdLine.Mid(first, (i - first)));
+ To check if all these conditions are verified, you need to simple call
+ IsOkToUse(). It will check the first two conditions above the first time it
+ is called (and if this fails, the subsequent calls will return immediately)
+ and also recheck the last one every time it is called.
+ */
+class wxConsoleStderr
+{
+public:
+ // default ctor does nothing, call Init() before using this class
+ wxConsoleStderr()
+ {
+ m_hStderr = INVALID_HANDLE_VALUE;
+ m_historyLen =
+ m_dataLen =
+ m_dataLine = 0;
- args.Add(arg);
- count ++;
- }
- }
+ m_ok = -1;
}
- wxTheApp->argv = new char*[count + 1];
- for (i = 0; i < count; i++)
+ ~wxConsoleStderr()
{
- wxString arg(args[i]);
- wxTheApp->argv[i] = copystring((const char*)arg);
+ if ( m_hStderr != INVALID_HANDLE_VALUE )
+ {
+ if ( !::FreeConsole() )
+ {
+ wxLogLastError(wxT("FreeConsole"));
+ }
+ }
}
- wxTheApp->argv[count] = NULL; // argv[] is a NULL-terminated list
- wxTheApp->argc = count;
-}
-//// Cleans up any wxWindows internal structures left lying around
+ // return true if we were successfully initialized and there had been no
+ // console activity which would interfere with our output since then
+ bool IsOkToUse() const
+ {
+ if ( m_ok == -1 )
+ {
+ wxConsoleStderr * const self = const_cast<wxConsoleStderr *>(this);
+ self->m_ok = self->DoInit();
-void wxApp::CleanUp()
-{
- //// COMMON CLEANUP
+ // no need to call IsHistoryUnchanged() as we just initialized
+ // m_history anyhow
+ return m_ok == 1;
+ }
- // 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();
+ return m_ok && IsHistoryUnchanged();
+ }
- // this will flush the old messages if any
- delete wxLog::SetActiveTarget(new wxLogStderr);
- // One last chance for pending objects to be cleaned up
- wxTheApp->DeletePendingObjects();
+ // output the provided text on the console, return true if ok
+ bool Write(const wxString& text);
- wxModule::CleanUpModules();
+private:
+ // called by Init() once only to do the real initialization
+ bool DoInit();
-#if wxUSE_WX_RESOURCES
- wxCleanUpResourceSystem();
+ // retrieve the command line history into the provided buffer and return
+ // its length
+ int GetCommandHistory(wxWxCharBuffer& buf) const;
- // wxDefaultResourceTable->ClearTable();
-#endif
+ // check if the console history has changed
+ bool IsHistoryUnchanged() const;
- // 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;
- g_globalCursor = NULL;
+ int m_ok; // initially -1, set to true or false by Init()
- wxDeleteStockObjects() ;
+ wxDynamicLibrary m_dllKernel32;
- // Destroy all GDI lists, etc.
- wxDeleteStockLists();
+ HANDLE m_hStderr; // console handle, if it's valid we must call
+ // FreeConsole() (even if m_ok != 1)
- delete wxTheColourDatabase;
- wxTheColourDatabase = NULL;
+ wxWxCharBuffer m_history; // command history on startup
+ int m_historyLen; // length command history buffer
- wxBitmap::CleanUpHandlers();
+ wxCharBuffer m_data; // data between empty line and cursor position
+ int m_dataLen; // length data buffer
+ int m_dataLine; // line offset
- delete[] wxBuffer;
- wxBuffer = NULL;
+ typedef DWORD (WINAPI *GetConsoleCommandHistory_t)(LPTSTR sCommands,
+ DWORD nBufferLength,
+ LPCTSTR sExeName);
+ typedef DWORD (WINAPI *GetConsoleCommandHistoryLength_t)(LPCTSTR sExeName);
- //// WINDOWS-SPECIFIC CLEANUP
+ GetConsoleCommandHistory_t m_pfnGetConsoleCommandHistory;
+ GetConsoleCommandHistoryLength_t m_pfnGetConsoleCommandHistoryLength;
- wxSetKeyboardHook(FALSE);
+ wxDECLARE_NO_COPY_CLASS(wxConsoleStderr);
+};
-#ifdef __WIN95__
+bool wxConsoleStderr::DoInit()
+{
+ HANDLE hStderr = ::GetStdHandle(STD_ERROR_HANDLE);
-#if wxUSE_RICHEDIT
- if (gs_hRichEdit != (HINSTANCE) NULL)
- FreeLibrary(gs_hRichEdit);
-#endif
+ if ( hStderr == INVALID_HANDLE_VALUE || !hStderr )
+ return false;
-#endif
+ if ( !m_dllKernel32.Load(wxT("kernel32.dll")) )
+ return false;
-#if wxUSE_PENWINDOWS
- wxCleanUpPenWin();
-#endif
+ typedef BOOL (WINAPI *AttachConsole_t)(DWORD dwProcessId);
+ AttachConsole_t wxDL_INIT_FUNC(pfn, AttachConsole, m_dllKernel32);
- 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 ( !pfnAttachConsole || !pfnAttachConsole(ATTACH_PARENT_PROCESS) )
+ return false;
- if (wxDEFAULT_FRAME_ICON)
- DestroyIcon(wxDEFAULT_FRAME_ICON);
- if (wxDEFAULT_MDICHILDFRAME_ICON)
- DestroyIcon(wxDEFAULT_MDICHILDFRAME_ICON);
- if (wxDEFAULT_MDIPARENTFRAME_ICON)
- DestroyIcon(wxDEFAULT_MDIPARENTFRAME_ICON);
+ // console attached, set m_hStderr now to ensure that we free it in the
+ // dtor
+ m_hStderr = hStderr;
- if ( wxDisableButtonBrush )
- ::DeleteObject( wxDisableButtonBrush ) ;
+ wxDL_INIT_FUNC_AW(m_pfn, GetConsoleCommandHistory, m_dllKernel32);
+ if ( !m_pfnGetConsoleCommandHistory )
+ return false;
-#if wxUSE_OLE
- ::OleUninitialize();
-#endif
+ wxDL_INIT_FUNC_AW(m_pfn, GetConsoleCommandHistoryLength, m_dllKernel32);
+ if ( !m_pfnGetConsoleCommandHistoryLength )
+ return false;
-#if wxUSE_CTL3D
- Ctl3dUnregister(wxhInstance);
-#endif
+ // remember the current command history to be able to compare with it later
+ // in IsHistoryUnchanged()
+ m_historyLen = GetCommandHistory(m_history);
+ if ( !m_history )
+ return false;
- if (wxWinHandleList)
- delete wxWinHandleList ;
- wxClassInfo::CleanUpClasses();
+ // now find the first blank line above the current position
+ CONSOLE_SCREEN_BUFFER_INFO csbi;
- 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)
+ if ( !::GetConsoleScreenBufferInfo(m_hStderr, &csbi) )
{
- wxLogDebug("There were memory leaks.");
- wxDebugContext::Dump();
- wxDebugContext::PrintStatistics();
+ wxLogLastError(wxT("GetConsoleScreenBufferInfo"));
+ return false;
}
- // wxDebugContext::SetStream(NULL, NULL);
-#endif
-
- // do it as the very last thing because everything else can log messages
- delete wxLog::SetActiveTarget(NULL);
-}
-
-#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++
+ COORD pos;
+ pos.X = 0;
+ pos.Y = csbi.dwCursorPosition.Y + 1;
-//// 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);
-
- // 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;
+ // we decide that a line is empty if first 4 characters are spaces
+ DWORD ret;
+ char buf[4];
+ do
+ {
+ pos.Y--;
+ if ( !::ReadConsoleOutputCharacterA(m_hStderr, buf, WXSIZEOF(buf),
+ pos, &ret) )
+ {
+ wxLogLastError(wxT("ReadConsoleOutputCharacterA"));
+ return false;
+ }
+ } while ( wxStrncmp(" ", buf, WXSIZEOF(buf)) != 0 );
- if (!wxApp::Initialize())
- return 0;
+ // calculate line offset and length of data
+ m_dataLine = csbi.dwCursorPosition.Y - pos.Y;
+ m_dataLen = m_dataLine*csbi.dwMaximumWindowSize.X + csbi.dwCursorPosition.X;
- // create the application object or ensure that one already exists
- if (!wxTheApp)
+ if ( m_dataLen > 0 )
+ {
+ m_data.extend(m_dataLen);
+ if ( !::ReadConsoleOutputCharacterA(m_hStderr, m_data.data(), m_dataLen,
+ pos, &ret) )
{
- // 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()) ();
+ wxLogLastError(wxT("ReadConsoleOutputCharacterA"));
+ return false;
}
+ }
- wxCHECK_MSG( wxTheApp, 0, "You have to define an instance of wxApp!" );
+ return true;
+}
- // save the WinMain() parameters
- wxTheApp->ConvertToStandardCommandArgs(lpCmdLine);
- wxTheApp->m_nCmdShow = nCmdShow;
+int wxConsoleStderr::GetCommandHistory(wxWxCharBuffer& buf) const
+{
+ // these functions are internal and may only be called by cmd.exe
+ static const wxChar *CMD_EXE = wxT("cmd.exe");
- // GUI-specific initialisation. In fact on Windows we don't have any,
- // but this call is provided for compatibility across platforms.
- wxTheApp->OnInitGui() ;
+ const int len = m_pfnGetConsoleCommandHistoryLength(CMD_EXE);
+ if ( len )
+ {
+ buf.extend(len);
- int retValue = 0;
+ int len2 = m_pfnGetConsoleCommandHistory(buf.data(), len, CMD_EXE);
- 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()
+#if !wxUSE_UNICODE
+ // there seems to be a bug in the GetConsoleCommandHistoryA(), it
+ // returns the length of Unicode string and not ANSI one
+ len2 /= 2;
+#endif // !wxUSE_UNICODE
- wxWindow *topWindow = wxTheApp->GetTopWindow();
- if ( topWindow )
+ if ( len2 != len )
{
- // Forcibly delete the window.
- if ( topWindow->IsKindOf(CLASSINFO(wxFrame)) ||
- topWindow->IsKindOf(CLASSINFO(wxDialog)) )
- {
- topWindow->Close(TRUE);
- wxTheApp->DeletePendingObjects();
- }
- else
- {
- delete topWindow;
- wxTheApp->SetTopWindow(NULL);
- }
+ wxFAIL_MSG( wxT("failed getting history?") );
}
-
- wxTheApp->OnExit();
-
- wxApp::CleanUp();
-
- 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
+
+ return len;
}
-// restore warning state
-#ifdef __VISUALC__
- #pragma warning(default: 4715) // not all control paths return a value
-#endif // Visual C++
+bool wxConsoleStderr::IsHistoryUnchanged() const
+{
+ wxASSERT_MSG( m_ok == 1, wxT("shouldn't be called if not initialized") );
-#else /* _WINDLL */
+ // get (possibly changed) command history
+ wxWxCharBuffer history;
+ const int historyLen = GetCommandHistory(history);
-//// Entry point for DLLs
+ // and compare it with the original one
+ return historyLen == m_historyLen && history &&
+ memcmp(m_history, history, historyLen) == 0;
+}
-int wxEntry(WXHINSTANCE hInstance)
+bool wxConsoleStderr::Write(const wxString& text)
{
- wxhInstance = (HINSTANCE) hInstance;
- wxApp::Initialize();
+ wxASSERT_MSG( m_hStderr != INVALID_HANDLE_VALUE,
+ wxT("should only be called if Init() returned true") );
- // 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)
+ // get current position
+ CONSOLE_SCREEN_BUFFER_INFO csbi;
+ if ( !::GetConsoleScreenBufferInfo(m_hStderr, &csbi) )
{
- wxCHECK_MSG( wxApp::GetInitializerFunction(), 0,
- "No initializer - use IMPLEMENT_APP macro." );
-
- wxTheApp = (* wxApp::GetInitializerFunction()) ();
+ wxLogLastError(wxT("GetConsoleScreenBufferInfo"));
+ return false;
}
- wxCHECK_MSG( wxTheApp, 0, "You have to define an instance of wxApp!" );
-
- wxTheApp->argc = 0;
- wxTheApp->argv = NULL;
+ // and calculate new position (where is empty line)
+ csbi.dwCursorPosition.X = 0;
+ csbi.dwCursorPosition.Y -= m_dataLine;
- wxTheApp->OnInitGui();
+ if ( !::SetConsoleCursorPosition(m_hStderr, csbi.dwCursorPosition) )
+ {
+ wxLogLastError(wxT("SetConsoleCursorPosition"));
+ return false;
+ }
- wxTheApp->OnInit();
+ DWORD ret;
+ if ( !::FillConsoleOutputCharacter(m_hStderr, wxT(' '), m_dataLen,
+ csbi.dwCursorPosition, &ret) )
+ {
+ wxLogLastError(wxT("FillConsoleOutputCharacter"));
+ return false;
+ }
- wxWindow *topWindow = wxTheApp->GetTopWindow();
- if ( topWindow && topWindow->GetHWND())
+ if ( !::WriteConsole(m_hStderr, text.wx_str(), text.length(), &ret, NULL) )
{
- topWindow->Show(TRUE);
+ wxLogLastError(wxT("WriteConsole"));
+ return false;
}
- return 1;
+ WriteConsoleA(m_hStderr, m_data, m_dataLen, &ret, 0);
+
+ return true;
}
-#endif // _WINDLL
-//// Static member initialization
+wxConsoleStderr s_consoleStderr;
-wxAppInitializerFunction wxApp::m_appInitFn = (wxAppInitializerFunction) NULL;
+} // anonymous namespace
-wxApp::wxApp()
+bool wxGUIAppTraits::CanUseStderr()
{
- 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;
+ return s_consoleStderr.IsOkToUse();
}
-wxApp::~wxApp()
+bool wxGUIAppTraits::WriteToStderr(const wxString& text)
{
- // Delete command-line args
- int i;
- for (i = 0; i < argc; i++)
- {
- delete[] argv[i];
- }
- delete[] argv;
+ return s_consoleStderr.IsOkToUse() && s_consoleStderr.Write(text);
}
-bool wxApp::Initialized()
+#else // !wxUSE_DYNLIB_CLASS
+
+bool wxGUIAppTraits::CanUseStderr()
{
-#ifndef _WINDLL
- if (GetTopWindow())
- return TRUE;
- else
- return FALSE;
-#endif
-#ifdef _WINDLL // Assume initialized if DLL (no way of telling)
- return TRUE;
-#endif
+ return false;
}
-/*
- * 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 wxGUIAppTraits::WriteToStderr(const wxString& WXUNUSED(text))
{
- 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" );
+ return false;
+}
- static bool s_hadGuiLock = TRUE;
- static wxMsgArray s_aSavedMessages;
+#endif // wxUSE_DYNLIB_CLASS/!wxUSE_DYNLIB_CLASS
- // 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;
+#endif // !__WXWINCE__
- // 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);
- }
+// ===========================================================================
+// wxApp implementation
+// ===========================================================================
- 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;
+int wxApp::m_nCmdShow = SW_SHOWNORMAL;
- size_t count = s_aSavedMessages.Count();
- for ( size_t n = 0; n < count; n++ )
- {
- MSG& msg = s_aSavedMessages[n];
+// ---------------------------------------------------------------------------
+// wxWin macros
+// ---------------------------------------------------------------------------
- if ( !ProcessMessage((WXMSG *)&msg) )
- {
- ::TranslateMessage(&msg);
- ::DispatchMessage(&msg);
- }
- }
+IMPLEMENT_DYNAMIC_CLASS(wxApp, wxEvtHandler)
- s_aSavedMessages.Empty();
- }
- }
-#endif // wxUSE_THREADS
+BEGIN_EVENT_TABLE(wxApp, wxEvtHandler)
+ EVT_IDLE(wxApp::OnIdle)
+ EVT_END_SESSION(wxApp::OnEndSession)
+ EVT_QUERY_END_SESSION(wxApp::OnQueryEndSession)
+END_EVENT_TABLE()
- // Process the message
- if ( !ProcessMessage((WXMSG *)&s_currentMsg) )
- {
- ::TranslateMessage(&s_currentMsg);
- wxApp::sm_lastMessageTime = s_currentMsg.time; /* MATTHEW: timeStamp impl. */
- ::DispatchMessage(&s_currentMsg);
- }
- }
+// 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(); }
- return TRUE;
-}
+ void Dismiss() { m_app = NULL; }
-/*
- * 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).
- */
+private:
+ wxApp *m_app;
+};
-int wxApp::MainLoop()
+//// Initialize
+bool wxApp::Initialize(int& argc, wxChar **argv)
{
- m_keepGoing = TRUE;
+ if ( !wxAppBase::Initialize(argc, argv) )
+ return false;
- while ( m_keepGoing )
- {
-#if wxUSE_THREADS
- wxMutexGuiLeaveOrEnter();
-#endif // wxUSE_THREADS
+ // ensure that base cleanup is done if we return too early
+ wxCallBaseCleanup callBaseCleanup(this);
- while ( !::PeekMessage(&s_currentMsg, 0, 0, 0, PM_NOREMOVE) &&
- ProcessIdle() )
- {
- }
+#if !defined(__WXMICROWIN__)
+ InitCommonControls();
+#endif // !defined(__WXMICROWIN__)
- DoMessage();
- }
+#if defined(__SMARTPHONE__) || defined(__POCKETPC__)
+ SHInitExtraControls();
+#endif
- return s_currentMsg.wParam;
-}
+#ifndef __WXWINCE__
+ // Don't show a message box if a function such as SHGetFileInfo
+ // fails to find a device.
+ SetErrorMode(SEM_FAILCRITICALERRORS|SEM_NOOPENFILEERRORBOX);
+#endif
-// Returns TRUE if more time is needed.
-bool wxApp::ProcessIdle()
-{
- wxIdleEvent event;
- event.SetEventObject(this);
- ProcessEvent(event);
+ wxOleInitialize();
- return event.MoreRequested();
-}
+#if !defined(__WXMICROWIN__) && !defined(__WXWINCE__)
+ wxSetKeyboardHook(true);
+#endif
-void wxApp::ExitMainLoop()
-{
- m_keepGoing = FALSE;
-}
+ callBaseCleanup.Dismiss();
-bool wxApp::Pending()
-{
- return (::PeekMessage(&s_currentMsg, 0, 0, 0, PM_NOREMOVE) != 0) ;
+ return true;
}
-void wxApp::Dispatch()
+// ---------------------------------------------------------------------------
+// Win32 window class registration
+// ---------------------------------------------------------------------------
+
+/* static */
+const wxChar *wxApp::GetRegisteredClassName(const wxChar *name,
+ int bgBrushCol,
+ int extraStyles)
{
- DoMessage();
-}
+ const size_t count = gs_regClassesInfo.size();
+ for ( size_t n = 0; n < count; n++ )
+ {
+ if ( gs_regClassesInfo[n].regname == name )
+ return gs_regClassesInfo[n].regname.c_str();
+ }
-/*
- * Give all windows a chance to preprocess
- * the message. Some may have accelerator tables, or have
- * MDI complications.
- */
+ // 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;
-bool wxApp::ProcessMessage(WXMSG *wxmsg)
-{
- MSG *msg = (MSG *)wxmsg;
- HWND hWnd = msg->hwnd;
- wxWindow *wndThis = wxFindWinFromHandle((WXHWND)hWnd), *wnd;
- // Try translations first; find the youngest window with
- // a translation table.
- for ( wnd = wndThis; wnd; wnd = wnd->GetParent() )
+ ClassRegInfo regClass(name);
+ wndclass.lpszClassName = regClass.regname.wx_str();
+ if ( !::RegisterClass(&wndclass) )
{
- if ( wnd->MSWTranslateMessage(wxmsg) )
- return TRUE;
+ wxLogLastError(wxString::Format(wxT("RegisterClass(%s)"),
+ regClass.regname));
+ return NULL;
}
- // Anyone for a non-translation message? Try youngest descendants first.
- for ( wnd = wndThis; wnd; wnd = wnd->GetParent() )
+ wndclass.style &= ~(CS_HREDRAW | CS_VREDRAW);
+ wndclass.lpszClassName = regClass.regnameNR.wx_str();
+ if ( !::RegisterClass(&wndclass) )
{
- if ( wnd->MSWProcessMessage(wxmsg) )
- return TRUE;
+ wxLogLastError(wxString::Format(wxT("RegisterClass(%s)"),
+ regClass.regname));
+ ::UnregisterClass(regClass.regname.c_str(), wxGetInstance());
+ return NULL;
}
- return FALSE;
+ 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().regname.wx_str();
}
-void wxApp::OnIdle(wxIdleEvent& event)
+bool wxApp::IsRegisteredClassName(const wxString& name)
{
- 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() )
+ const size_t count = gs_regClassesInfo.size();
+ for ( size_t n = 0; n < count; n++ )
{
- // SendIdleEvents() returns TRUE if at least one window requested more
- // idle events
- event.RequestMore(TRUE);
+ if ( gs_regClassesInfo[n].regname == name ||
+ gs_regClassesInfo[n].regnameNR == name )
+ return true;
}
- s_inOnIdle = FALSE;
+ return false;
}
-// Send idle event to all top-level windows
-bool wxApp::SendIdleEvents()
+void wxApp::UnregisterWindowClasses()
{
- bool needMore = FALSE;
- wxNode* node = wxTopLevelWindows.First();
- while (node)
+ const size_t count = gs_regClassesInfo.size();
+ for ( size_t n = 0; n < count; n++ )
{
- wxWindow* win = (wxWindow*) node->Data();
- if (SendIdleEvents(win))
- needMore = TRUE;
+ const ClassRegInfo& regClass = gs_regClassesInfo[n];
+ if ( !::UnregisterClass(regClass.regname.c_str(), wxGetInstance()) )
+ {
+ wxLogLastError(wxString::Format(wxT("UnregisterClass(%s)"),
+ regClass.regname));
+ }
- node = node->Next();
+ if ( !::UnregisterClass(regClass.regnameNR.c_str(), wxGetInstance()) )
+ {
+ wxLogLastError(wxString::Format(wxT("UnregisterClass(%s)"),
+ regClass.regnameNR));
+ }
}
- return needMore;
+ gs_regClassesInfo.clear();
}
-// Send idle event to window and all subwindows
-bool wxApp::SendIdleEvents(wxWindow* win)
+void wxApp::CleanUp()
{
- bool needMore = FALSE;
+ // 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();
+
+#if !defined(__WXMICROWIN__) && !defined(__WXWINCE__)
+ wxSetKeyboardHook(false);
+#endif
- wxIdleEvent event;
- event.SetEventObject(win);
- win->GetEventHandler()->ProcessEvent(event);
+ wxOleUninitialize();
- if (event.MoreRequested())
- needMore = TRUE;
+ // 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();
+}
- wxNode* node = win->GetChildren().First();
- while (node)
- {
- wxWindow* win = (wxWindow*) node->Data();
- if (SendIdleEvents(win))
- needMore = TRUE;
+// ----------------------------------------------------------------------------
+// wxApp ctor/dtor
+// ----------------------------------------------------------------------------
- node = node->Next();
- }
- return needMore ;
+wxApp::wxApp()
+{
+ m_printMode = wxPRINT_WINDOWS;
}
-void wxApp::DeletePendingObjects()
+wxApp::~wxApp()
{
- wxNode *node = wxPendingDelete.First();
- while (node)
- {
- wxObject *obj = (wxObject *)node->Data();
+}
- delete obj;
+// ----------------------------------------------------------------------------
+// wxApp idle handling
+// ----------------------------------------------------------------------------
- if (wxPendingDelete.Member(obj))
- delete node;
+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
+}
- // Deleting one object may have deleted other pending
- // objects, so start from beginning of list again.
- node = wxPendingDelete.First();
+void wxApp::WakeUpIdle()
+{
+ // 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 * const topWindow = wxTheApp->GetTopWindow();
+ if ( topWindow )
+ {
+ HWND hwndTop = GetHwndOf(topWindow);
+
+ // Do not post WM_NULL if there's already a pending WM_NULL to avoid
+ // overflowing the message queue.
+ //
+ // Notice that due to a limitation of PeekMessage() API (which handles
+ // 0,0 range specially), we have to check the range from 0-1 instead.
+ // This still makes it possible to overflow the queue with WM_NULLs by
+ // interspersing the calles to WakeUpIdle() with windows creation but
+ // it should be rather hard to do it accidentally.
+ MSG msg;
+ if ( !::PeekMessage(&msg, hwndTop, 0, 1, PM_NOREMOVE) ||
+ ::PeekMessage(&msg, hwndTop, 1, 1, PM_NOREMOVE) )
+ {
+ if ( !::PostMessage(hwndTop, WM_NULL, 0, 0) )
+ {
+ // should never happen
+ wxLogLastError(wxT("PostMessage(WM_NULL)"));
+ }
+ }
}
+#if wxUSE_THREADS
+ else
+ wxWakeUpMainThread();
+#endif // wxUSE_THREADS
}
+// ----------------------------------------------------------------------------
+// other wxApp event hanlders
+// ----------------------------------------------------------------------------
+
void wxApp::OnEndSession(wxCloseEvent& WXUNUSED(event))
{
- if (GetTopWindow())
- GetTopWindow()->Close(TRUE);
+ // 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);
+
+ 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
if (GetTopWindow())
{
if (!GetTopWindow()->Close(!event.CanVeto()))
- event.Veto(TRUE);
+ event.Veto(true);
}
}
-wxLog* wxApp::CreateLogTarget()
+// ----------------------------------------------------------------------------
+// system DLL versions
+// ----------------------------------------------------------------------------
+
+// these functions have trivial inline implementations for CE
+#ifndef __WXWINCE__
+
+#if wxUSE_DYNLIB_CLASS
+
+namespace
{
- return new wxLogGui;
-}
-wxWindow* wxApp::GetTopWindow() const
+// helper function: retrieve the DLL version by using DllGetVersion(), returns
+// 0 if the DLL doesn't export such function
+int CallDllGetVersion(wxDynamicLibrary& dll)
{
- if (m_topWindow)
- return m_topWindow;
- else if (wxTopLevelWindows.Number() > 0)
- return (wxWindow*) wxTopLevelWindows.First()->Data();
- else
- return NULL;
+ // 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;
}
-int wxApp::GetComCtl32Version() const
+} // anonymous namespace
+
+/* static */
+int wxApp::GetComCtl32Version()
{
- // have we loaded COMCTL32 yet?
- HMODULE theModule = ::GetModuleHandle("COMCTL32");
- int version = 0;
+ // 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 so, then we can check for the version
- if (theModule)
+ if ( s_verComCtl32 == -1 )
{
- // InitCommonControlsEx is unique to 4.7 and later
- FARPROC theProc = ::GetProcAddress(theModule, "InitCommonControlsEx");
-
- if (! theProc)
- { // not found, must be 4.00
- version = 400;
+ // 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;
}
- else
+
+ // 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 )
{
- // 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)
+ // InitCommonControlsEx is unique to 4.70 and later
+ void *pfn = dllComCtl32.GetSymbol(wxT("InitCommonControlsEx"));
+ if ( !pfn )
{
- // not found, must be 4.70
- version = 470;
+ // not found, must be 4.00
+ s_verComCtl32 = 400;
}
- else
- { // found, must be 4.71
- version = 471;
+ 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 version;
-}
-
-void wxExit()
-{
- wxLogError(_("Fatal error: exiting"));
- wxApp::CleanUp();
+ return s_verComCtl32;
}
-// Yield to incoming messages
-bool wxYield()
+/* static */
+int wxApp::GetShell32Version()
{
- 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)
+ static int s_verShell32 = -1;
+ if ( s_verShell32 == -1 )
{
- if ( !wxTheApp->DoMessage() )
- break;
+ // we're prepared to handle the errors
+ wxLogNull noLog;
+
+ wxDynamicLibrary dllShell32(wxT("shell32.dll"), wxDL_VERBATIM);
+ if ( dllShell32.IsLoaded() )
+ {
+ s_verShell32 = CallDllGetVersion(dllShell32);
+
+ if ( !s_verShell32 )
+ {
+ // there doesn't seem to be any way to distinguish between 4.00
+ // and 4.70 (starting from 4.71 we have DllGetVersion()) so
+ // just assume it is 4.0
+ s_verShell32 = 400;
+ }
+ }
+ else // failed load the DLL?
+ {
+ s_verShell32 = 0;
+ }
}
- return TRUE;
+ return s_verShell32;
}
-HINSTANCE wxGetInstance()
+#else // !wxUSE_DYNLIB_CLASS
+
+/* static */
+int wxApp::GetComCtl32Version()
{
- return wxhInstance;
+ return 0;
}
-void wxSetInstance(HINSTANCE hInst)
+/* static */
+int wxApp::GetShell32Version()
{
- wxhInstance = hInst;
+ return 0;
}
-// 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__))
-#include "main.cpp"
-#endif
+#endif // wxUSE_DYNLIB_CLASS/!wxUSE_DYNLIB_CLASS
+
+#endif // !__WXWINCE__
+
+#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") );
+ // fall through
+
+ case IDRETRY:
+ return false;
+
+ case IDIGNORE:
+ return true;
+ }
+}
+
+#endif // wxUSE_EXCEPTIONS
projects / wxWidgets.git / blobdiff