fixed memory leaks when reading invalid GIFs

[wxWidgets.git] / docs / changes.txt

-------------------------------------------------------------------------------
                             wxWidgets Change Log
-------------------------------------------------------------------------------

INCOMPATIBLE CHANGES SINCE 2.8.x
================================

Changes in behaviour not resulting in compilation errors, please read this!
---------------------------------------------------------------------------

- Default location of wxFileConfig files has changed under Windows, you will
  need to update your code if you access these files directly.

- wxWindow::IsEnabled() now returns false if a window parent (and not
  necessarily the window itself) is disabled, new function IsThisEnabled()
  with the same behaviour as old IsEnabled() was added.

- Generating wxNavigationKeyEvent events doesn't work any more under wxGTK (and
  other platforms in the future), use wxWindow::Navigate() or NavigateIn()
  instead.

Changes in behaviour which may result in compilation errors
-----------------------------------------------------------

- WXWIN_COMPATIBILITY_2_4 doesn't exist any more, please update your code if
  you still relied on features deprecated since version 2.4

- Return type of wxString::operator[] and wxString::iterator::operator* is no
  longer wxChar (i.e. char or wchar_t), but wxUniChar. This is not a problem
  in vast majority of cases because of conversion operators, but it can break
  code that depends on the result being wxChar.

- The value returned by wxString::operator[] or wxString::iterator cannot be
  used in switch statements anymore, because it's a class instance. Code like
  this won't compile:
     switch (str[i]) { ... }
  and has to be replaced with this:
     switch (str[i].GetValue()) { ... }

- Return type of wxString::c_str() is now wxCStrData struct and not
  const wxChar*. wxCStrData is implicitly convertible to const char* and
  const wchar_t*, so this only presents a problem if the compiler cannot
  convert the type. In particular, Borland C++ and DigitalMars compilers
  don't correctly convert operator?: operands to the same type and fail with
  compilation error instead. This can be worked around by explicitly casting
  to const wxChar*:
     wxLogError(_("error: %s"), !err.empty() ? (const wxChar*)err.c_str() : "")

- DigitalMars compiler has a bug that prevents it from using
  wxUniChar::operator bool in conditions and it erroneously reports type
  conversion ambiguity in expressions such as this:
     for ( wxString::const_iterator p = s.begin(); *p; ++p )
  This can be worked around by explicitly casting to bool:
     for ( wxString::const_iterator p = s.begin(); (bool)*p; ++p )

Deprecated methods and their replacements
-----------------------------------------

- wxCreateGreyedImage() deprecated, use wxImage::ConvertToGreyscale() instead.
- wxString::GetWriteBuf() and UngetWriteBuf() deprecated, using wxStringBuffer
  or wxStringBufferLength instead.

Major new features in this release
----------------------------------


2.9.0
-----

All:

- Added wxJoin() and wxSplit() functions (Francesco Montorsi)
- Added wxMutex::LockTimeout() (Aleksandr Napylov)
- Added wxMemoryInputStream(wxInputStream&) ctor (Stas Sergeev)
- Implemented wxMemoryInputStream::CanRead()

All (GUI):

- Added wxDC::StretchBlit() for wxMac and wxMSW (Vince Harron)
- Added support for labels for toolbar controls (Vince Harron)
- Added wxEventBlocker class (Francesco Montorsi).
- Added wxFile/DirPickerCtrl::Get/SetFile/DirName() (Francesco Montorsi).
- Added wxSizerFlags::Top() and Bottom().
- Slovak translation added.
- Fixed tab-related drawing and hit-testing bugs in wxRichTextCtrl.
- Implemented background colour in wxRichTextCtrl.
- Fixed crashes in helpview when opening a file.
- Set locale to the default in all ports, not just wxGTK
- Added wxJoystick::GetButtonState/Position() (Frank C Szczerba)
- Added wxGridUpdateLocker helper class (Evgeniy Tarassov)
- Support wxGRID_AUTOSIZE in wxGrid::SetRow/ColLabelSize() (Evgeniy Tarassov)
- Added wxWindow::NavigateIn() in addition to existing Navigate()
- Add support for <data> tags to wxrc

wxGTK:

- Native implementation for wxHyperlinkCtrl (Francesco Montorsi)
- Native keyboard navigation implementation
- Implemented support for underlined fonts in wxStaticText.
- wxTopLevelWindow::SetSizeHints size increments now work.
- wxTopLevelWindow::GetSize() returns the size including the WM decorations.
- wxTopLevelWindow::GetClientSize() returns 0x0 when the window is minimized.
- Added support for colour cursors (Pascal Monasse).
- Setting foreground colour of single line wxTextCtrl now works

wxMac:

- Fix duplicate (empty) help menu in non-English programs (Andreas Jacobs)

wxMSW:

- Fixed infinite loop in wxThread::Wait() in console applications.
- Return the restored window size from GetSize() when window is minimized.


2.8.4
-----

wxMSW:

- Corrected wxStaticBox label appearance when its foreground colour was set:
  it didn't respect font size nor background colour then (Juan Antonio Ortega)
- Don't lose combobox text when it's opened and closed (Kolya Kosenko)
- Corrected GetChecked() for events from checkable menu items (smanders)
- Fixed popup menus under Windows NT 4
- Fixed bug in wxThread::Wait() in console applications introduced in 2.8.3
- Compilation fixed with WXWIN_COMPATIBILITY_2_6==0

wxGTK:

- Fix infinite loop when adding a wxStaticText control to a toolbar
- Fix wxNO_BORDER style for wxRadioBox (David Hart)


2.8.3
-----

All:

- Shut down the sockets gracefully (Sergio Aguayo)
- Fix extra indentation in wxHTML_ALIGN_JUSTIFY display (Chacal)

wxMac:

- Corrected top border size for wxStaticBox with empty label (nusi)

wxMSW:

- Fixed wxFileName::GetSize() for large files

wxGTK:

- Fixed handling of accelerators using PageUp/Down keys


2.8.2
-----

All:

- Added wxSizerFlags::Shaped() and FixedMinSize() methods.
- Added wxCSConv::IsOk() (Manuel Martin).
- Added wxDateTime::GetDateOnly().
- Made wxTextFile work with unseekable files again (David Hart).
- Added wxCONFIG_USE_SUBDIR flag to wxFileConfig (Giuseppe Bilotta).
- Added wxSearchCtrl::[Get|Set]DescriptiveText.
- Fixed detection of number of processors under Linux 2.6
- Fixed Base64 computation in wxHTTP (p_michalczyk)
- Fix handling of wxSOCKET_REUSEADDR in wxDatagramSocket (troelsk)

Unix Ports:

- Fixed crash in wxGetUserName() in Unicode build

wxMSW

- Fix lack of spin control update event when control lost focus.
- Corrected drawing of bitmaps for disabled menu items.

wxGTK

- Fix hang on startup when using GTK+ options in Unicode build

wxMac

- Fix position of the centered windows (didn't take menu bar size into account)
- Added support for the wxFRAME_FLOAT_ON_PARENT style.

wxX11:

- Don't crash in wxWindow dtor if the window hadn't been really Create()d.

wxUniv:

- Fixed wxComboBox always sorted.


2.8.1
-----

All:

- Fix compilation with wxUSE_STL=1.
- wxGrid::GetBestSize() returns same size the grid would have after AutoSize().
- Added wxTreeCtrl::CollapseAll[Children]() and IsEmpty() (Francesco Montorsi).
- Several RTL-related positioning fixes (Diaa Sami).
- Fix wxConfig::DeleteGroup() for arguments with trailing slash (David Hart).
- Fix memory leak in wxGrid::ShowCellEditControl() (Christian Sturmlechner).

wxMSW:

- Fixed compilation with Borland C++ in Unicode mode but without MSLU.
- Show taskbar icon menu on right button release, not press.

wxGTK:

- Don't crash if command line is not valid UTF-8 (Unicode build only).

wxUniv:

- It is now possible to set background colour of wxStaticText.


2.8.0
-----

All:

- Added wxSearchCtrl (Vince Harron).
- wxCSConv("UTF-16/32") now behaves correctly, i.e. same as wxMBConvUTF16/32.
- wxArrayString::Alloc() now works as reserve() and doesn't clear array contents.
- Fixed long standing bug in wxFileConfig groups renaming (Antti Koivisto).
- New option wxFS_READ | wxFS_SEEKABLE for wxFileSystem::OpenFile() to return
  a stream that is seekable.
- Fixed bug in wxCalendarCtrl::HitTest() when clicking on month change arrows.
- Added wxWindow::GetWindowBorderSize() and corrected wxTreeCtrl::GetBestSize().
  for a control with borders (Tim Kosse).

wxMSW:

- Fixed version script problems when using configure with cygwin/mingw32.
- Use system default paper size for printing instead of A4.
- Fix (harmless) assert in virtual list control under Vista.
- Fix colours when converting wxBitmap with alpha to wxImage (nusi).

wxGTK:

- Allow dynamically changing most of text control styles.
- Enable use of libgnomeprintui by default in configure.


2.7.2
-----

All:

- Added wxFFile overload to wxFileName::CreateTemporaryFileName().
- Added GetTempDir() to wxFileName and wxStandardPaths.
- Added wxTar streams.
- Added wxFilterFSHandler and wxArchiveFSHandler.
- Added wxString::ToLongLong() and ToULongLong().

All (GUI):

- wxMemoryDC constructor now optionally accepts a wxBitmap parameter,
  calling SelectObject itself if a valid bitmap is passed.
- Reverted wxBuffered[Paint]DC to pre 2.7.1 state, added
  wxAutoBufferedPaintDC and wxAutoBufferedPaintDCFactory.
- Renamed wxProgressDialog::UpdatePulse() to just Pulse().
- Added wxCollapsiblePane (Francesco Montorsi).
- Added wxSimpleHtmlListBox (Francesco Montorsi).
- Printing framework fixes by Robert J. Lang. Bugs fixed,
  wxPrinterDC::GetPaperRect() and other functions added to allow
  easier printing implementation, and the documentation updated.
- Many enhancements to wxRichTextCtrl including URL support,
  formatting and symbol dialogs, print/preview, and better list
  formatting.
- Support for loading TGA files added (Seth Jackson).
- Added wxTB_RIGHT style for right-aligned toolbars (Igor Korot).
- wxHtmlWindow now generates events on link clicks (Francesco Montorsi).
- wxHtmlWindow now also generates wxEVT_COMMAND_TEXT_COPY event.

Unix Ports:

- Added autopackage for wxGTK and an example of using autopackage for a wx
  program (Francesco Montorsi).

wxGTK:

- More RTL work.
- Support wxALWAYS_SHOW_SB.
- Speed up MIME types loading. Only the GNOME database should be loaded under
  GNOME etc. For this, the code queries the X11 session protocol.
- wxCaret redraw problem during scrolling fixed.


2.7.1
-----

All:

- Added wxDir::FindFirst() (Francesco Montorsi).
- Added wxPlatformInfo class (Francesco Montorsi).
- Added wxLocale::IsAvailable() (Creighton).
- Added Malay translations (Mahrazi Mohd Kamal).
- Added reference counting for wxVariant.
- For consistency, all classes having Ok() method now also have IsOk() one, use
  of the latter form is preferred although the former hasn't been deprecated yet.
- Added wxFileName::Is(Dir|File)(Writ|Read|Execut)able() (Francesco Montorsi).
- Added wxFileName::GetSize() and GetHumanReadableSize() (Francesco Montorsi).
- Added wxSizer::Replace (Francesco Montorsi).
- wxXmlDocument can now optionally preserve whitespace (Francesco Montorsi).
- Added wxBookCtrl::ChangeSelection() and wxTextCtrl::ChangeValue() to provide
  event-free alternatives to SetSelection() and SetValue() functions; see the
  "Events generated by the user vs programmatically generated events" paragraph
  in the "Event handling overview" topic for more info.

All (GUI):

- Support for right-to-left text layout (started by Diaa Sami during Google Summer of
  Code, with a lot of help from Tim Kosse and others).
- wxAnimationCtrl added (Francesco Montorsi).
- Added wxAboutBox() function for displaying the standard about dialog.
- Added wxID_PAGE_SETUP standard id.
- Added wxSize::IncBy() and DecBy() methods.
- Added wxTextCtrl::IsEmpty().
- Added file type parameter to wxTextCtrl::LoadFile, wxTextCtrl::SaveFile for
  consistency with wxRichTextCtrl.
- wxRichTextCtrl: fixed range out-by-one bug to be consistent with wxTextCtrl API,
  fixed some attribute bugs and added wxRichTextStyleComboCtrl.
- Added wxWindow::IsDoubleBuffered().
- Added wxHL_ALIGN_* flags to wxHyperlinkCtrl (Francesco Montorsi).
- Added wxGauge::Pulse() and wxProgressDialog::UpdatePulse() (Francesco Montorsi).

wxMSW:

- Implemented wxComboBox::SetEditable().
- wxSemaphore::Post() returns wxSEMA_OVERFLOW as documented (Christian Walther)
- Fixed a bug whereby static controls didn't use the correct text colour if the
  parent's background colour had been set (most noticeable when switching to a
  high-contrast theme).
- Respect wxBU_EXACTFIT style in wxToggleButton (Alexander Borovsky).

wxMac:

- Add parameter to the --enable-universal_binary configure option for the path
  to the SDK.

wxGTK:

- Automatically use stock items for menu items with standard ids.
- Setting cursor now works for all controls.
- Implemented right-to-left support.
- Implemented left indentation and tab stops support in wxTextCtrl (Tim Kosse).
- Fixed wxHTML rendering of underlined text of multiple words (Mart Raudsepp).

wxUniv:

- Added wxTLW::UseNativeDecorations() and UseNativeDecorationsByDefault().


2.7.0
-----

All:

- Added positional parameters support to wxVsnprintf() (Francesco Montorsi).
- wx(F)File, wxTextFile and wxInputStreams recognize Unicode BOM now.
- Many fixes for UTF-16/32 handling in Unicode builds.
- wxLaunchDefaultBrowser() now supports wxBROWSER_NEW_WINDOW flag.
- Added wxStandardPaths::GetResourcesDir() and GetLocalizedResourcesDir()
- Added wxStandardPaths::GetDocumentsDir() (Ken Thomases).
- Added wxStringTokenizer::GetLastDelimiter(); improved documentation.
- Fixed wxTextFile in Unicode build.
- Added possibility to specify dependencies for a wxModule.
- Speed improvements to wxRegEx when matching is done in a loop such as
  during a search and replace.
- Fix regerror and regfree name conficts when built-in regex and system regex
  are both used in the same program.
- Basic authentication supported added to wxHTTP.
- wxCondition::WaitTimeout() now returns correct value when timeout occurs.
- Fixed occasional wxThread cleanup crash.
- Bug in wxLogStream::DoLogString in Unicode builds fixed.
- Added support for memo fields to wxODBC.
- Fixed Unicode builds using SunPro compiler by defining__WCHAR_TYPE__.
- wxFileName now also looks for TMPDIR on Unix.
- Fixed build error in list.h with VC++ 2005.
- Fixed wxODBC buffer overflow problem in Unicode builds.
- Fixed wxSocketBase::InterruptWait on wxBase.
- Important code cleanup (Paul Cornett).
- Added support for wxLongLong in wx stream classes (Mark Junker).
- wxSOCKET_REUSEADDR can be used with wxSocketClient.
- Overloaded Connect() and SetLocal() methods for binding to local address/port.
- Albanian translation added (Besnik Bleta).
- Assert messages now show the function in which assert failed.
- wxApp::OnAssertFailure() should now be used instead the old wxApp::OnAssert().
- Fixed several bugs in wxDateTime::ParseDate().
- The WXK*PRIOR and WXK*NEXT constants are now aliases for WXK*PAGEUP
  and WXK*PAGEDOWN.  If you have switch statements that use both
  constants from a set then you need to remove the PRIOR/NEXT
  versions in order to eliminate compiler errors.
- Fixed bug where wxDateTime::Now() would sometimes return an incorrect value
  the first time it was called.
- Added wxString::rbegin() and rend().
- Added wxString::EndsWith().
- wxSocket::_Read continues reading from socket after exhausting pushback buffer.
  Previously, only the buffer would be returned, even if more data was requested.
- Added wxPowerEvent (currently MSW-only).
- Make wx-config compatible with Bourne shells.
- Fixed wxDb::Open(wxDbConnectInf) when using connection string (Hellwolf Misty).
- Fixed crash in wxDb::Open() in Unicode build (Massimiliano Marretta).
- Fixed wxTimeSpan::Format() for negative time spans.
- Optionally count repeating wxLog messages instead of logging all (Lauri Nurmi).

All (GUI):

- New AUI (Advanced User Interface) library for docking windows and much more.
- Added wxComboCtrl and wxOwnerDrawnComboBox (Jaakko Salli).
- Added wxTreebook (uses a wxTreeCtrl to control pages).
- Added wxColour/Dir/File/Font/PickerCtrls (Francesco Montorsi).
- Added wxDC::GradientFillLinear/Concentric().
- Added wxHyperlinkCtrl (Francesco Montorsi).
- Added clipboard events (wxEVT_COMMAND_TEXT_COPY/CUT/PASTE).
- Allow to reorder wxGrid columns by drag-and-drop (Santiago Palacios).
- Added wxRadioBox::SetItemToolTip().
- Added support for CMYK JPEG images loading (Robert Wruck).
- Added wxListCtrl::GetSubItemRect() and subitem hit testing (Agron Selimaj).
- Added wxKeyEvent::GetModifiers().
- Added wxDialog::SetEscapeId().
- wxItemContainerImmutable::FindString unified (affects wxRadioBox, wxListBox,
  wxComboBox and wxChoice).
- wxWindow::Fit() now works correctly for frames and dialogs too.
- Added access to the border size between pages and controller in book
  based controls (wxBookCtrlBase::Get/SetInternalBorder).
- Added initial wxRichTextCtrl implementation.
- All book based controls (notebook, treebook etc.) share now the same
  options for orientation (wxBK_TOP, wxBK_DEFAULT, ...) instead of duplicated
  wxLB_TOP, wxNB_TOP, wxCHB_TOP, wxTBK_TOP.
- Added parent window parameter to wxHelpController constructor
  and added SetParentWindow/GetParentWindow.
- wxMultiChoiceDialog uses now wxCheckListBox if possible, wxListBox if not.
- Added wxBitmapButton::SetHoverBitmap().
- Access to titles through Get/SetTitle is available now only for top level
  windows (wxDialog, wxFrame).
- Fixed memory leak of pending events in wxEvtHandler.
- Added wxRadioBox::IsItemEnabled/Shown().
- Added space after list item number in wxHTML.
- Implemented <sub> and <sup> handling in wxHTML (based on patch
  by Sandro Sigala).
- Added caption parameter to wxGetFontFromUser and wxGetColourFromUser.
- Added wxGetMouseState function.
- Added wxHtmlHelpWindow, wxHtmlHelpDialog and wxHtmlModalHelp classes,
  allowing HTML help to be embedded in an application.
- wxCalendarCtrl positioning and hit-testing fixes for dimensions other than
  best size.
- wxCalendarCtrl colour schema changed and adjusted to system settings.
- wxImage::Mirror() and GetSubBitmap() now support alpha (Mickey Rose).
- More checking of image validity before loading into wxImage.
- Added wxImage::ConvertToGreyscale.
- Added ability to use templates with static event tables
  with BEGIN_EVENT_TABLE_TEMPLATEn() macros.
- Added play, pause, and state change events to wxMediaCtrl.
- Added double-buffering to wxVListBox and fixed a scrolling issue.
- Added wxToolbook (uses a wxToolBar to control pages).
- Added SetSheetStyle to wxPropertySheetDialog and allowed it to
  behave like a Mac OS X settings dialog.
- Added <disabled> XRC tag for wxToolBar elements and <bg> for wxToolBar itself.
- Fixed centering of top level windows on secondary displays.
- Implemented wxDisplay::GetFromWindow() for platforms other than MSW.
- UpdateUI handler can now show/hide the window too (Ronald Weiss).
- More than one filter allowed in in wxDocTemplate filter.
- Added wxListBox::HitTest().
- Added wxDisplay::GetClientArea().
- Indices and counts in wxControlWithItems derived API are unsigned.
- Added support for links to wxHtmlListBox; use code has to override
  wxHtmlListBox::OnLinkClicked() to take advantage of it.
- Added an easier to use wxMenu::AppendSubMenu().
- wxString <-> wxColour conversions in wxColour class (Francesco Montorsi).
- Fixed bug with ignoring blank lines in multiline wxGrid cell labels.
- Added wxTextAttr::Merge() (Marcin Simonides).
- Added wxTB_NO_TOOLTIPS style (Igor Korot).
- Added wxGenericDirCtrl::CollapsePath() (Christian Buhtz).
- Added wxTreeCtrl::ExpandAllChildren() (Christian Buhtz)
- Fixed 64-bit issue in wxNotebook causing segfaults on Tru64 Unix.
- Made it possible to associate context help to a region of a window.
- Added support for tabs in wxRichTextCtrl (Ashish More).
- Fixed problem with zoom setting in print preview.
- Moved wxRichTextCtrl from the advanced library to its own.
- wxNB_HITTEST_* flags renamed to wxBK_HITTEST_* to serve all book controls.
- Added wxTopLevelWindow::SetTransparent and CanSetTransparent, with
  implementations (so far) for wxMSW and wxMac.