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* Avoid the use of C++ reserved words in headers [Bug2815625]patthoyts2009-07-021-2/+2
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* s/Tcl_PanicEx/TclPanic/; improve clang assert Tcl_Panic macrologydas2009-06-301-3/+3
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* * generic/tkInt.h: add assert macros for clang staticdas2009-06-301-1/+15
| | | | | | | | | | | | analyzer and redefine Tcl_Panic to assert after panic in clang PURIFY builds. * generic/tkImgPhInstance.c: small fixes to make clang static * generic/tkTextDisp.c: analyzer happier. * generic/tkConfig.c: add clang assert for false positives * generic/tkUndo.c: from static analyzer.
* Expose TkSmooth(Parse|Print)Proc through the internal stub table. It was the ↵macosx_cocoa_premergenijtmans2009-06-271-13/+1
| | | | | | | last set of internal function of this type which was not exposed yet. Removed TkTile(Parse|Print)Proc from tkInt.h, because they don't exist. Follow-up to [Bug 2804935], now all Tk*(Parse|Print)Proc functions are exposed through the internal stub table.
* Move another two entries to the internal stub table from MODULE_SCOPE.dkf2009-06-121-7/+1
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* Private-export functions that were being used in extensions. [Bug 2768945]dkf2009-04-271-34/+8
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* [Feature Request 2636558] Tk_DefineBitmapnijtmans2009-02-271-2/+2
| | | | and Tk_GetBitmapFromData signature problem
* Implementation of TIP #244, PNG image support.dkf2008-12-281-1/+2
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* TIP #324 IMPLEMENTATIONdas2008-12-101-5/+6
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* * generic/tkInt.h: Turn [tk] into an ensemble (thoyts, steffen)das2008-12-101-4/+17
| | | | | | * generic/tkBusy.c: * generic/tkCmds.c: * generic/tkWindow.c:
* Millimeter patch. Fixes [1813597,2218964] by eliminating the functional ↵ferrieux2008-11-271-1/+6
| | | | redundancy and unnecessary loss of precision of the {pixel,mm}ObjType tandem.
* [Bug 1389270] event generate silently ignored focus events. These can now be ↵patthoyts2008-11-231-1/+9
| | | | generated.
* use M_PI when available, remove redundant definitions of PIdas2008-11-221-1/+5
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* TIP#119 implementation. [Patch 1611359]dkf2008-11-221-1/+27
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* One more (hopefully the last) signature changenijtmans2008-11-091-2/+2
| | | | in Tk_CreateSmoothMethod.
* no need to use CONST in internal header filesnijtmans2008-11-051-8/+8
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* [Bug 2190619] Warnings due to Tk_SmoothMethodnijtmans2008-10-301-8/+8
| | | | | | | | | | | | | | | | name constness change. Although dkf's solution (simply adding a type cast) is correct as well, changing the return value (as das suggested) has the advantage that all Tk_OptionPrintProc implementations don't need a type cast any more in its code. This makes all those functions robust against the -Wwrite-strings warning option. Further on, the customPtr field of Tk_ConfigSpec can be a constant, without any danger of source incompatibility.
* CONSTify TkPrintPadAmount, TkCreateFrame, TkCreateMainWindownijtmans2008-10-281-2/+2
| | | | | and Tk_ParseArgv. move TkSelGetSelection to internal stub table (needed in tkWinTest.c)
* Reduce number of castsdkf2008-10-201-2/+2
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* Factor out the platform-specific bits of [tk busy]. [Bug 2180919]dkf2008-10-201-1/+9
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* Implementation of the [tk busy] command on non-OSX.dkf2008-10-181-1/+5
| | | | Adapted from [Patch 1997907]
* Add "const" to many internalnijtmans2008-10-151-9/+9
| | | | | | | | const tables, so those will be put by the C-compiler in the TEXT segment in stead of the DATA segment. This makes those table sharable in shared libraries.
* Added new utility function: TkNewWindowObj()dkf2008-10-141-1/+2
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* * generic/tkDecls.h: make genstubsdas2008-04-021-2/+2
| | | | | | | | * generic/tkIntDecls.h: * generic/tkIntPlatDecls.h: * generic/tkIntXlibDecls.h: * generic/tkPlatDecls.h: * generic/tkStubInit.c:
* XIM reorganization and cleanup; see [Patch 1919791] for details.jenglish2008-03-261-16/+2
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* merge stable branch onto HEADdgp2007-12-131-1/+1
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* * generic/tkFocus.c, generic/tkFrame.c, generic/tkInt.h:hobbs2007-10-151-1/+4
| | | | | | | | * macosx/tkMacOSXButton.c, macosx/tkMacOSXMenubutton.c: * macosx/tkMacOSXWm.c, unix/tkUnixWm.c, win/tkWinWm.c: * doc/wm.n, tests/wm.test: TIP #125 implementation [Bug 998125] Adds [wm manage|forget] for dockable frames. Finished X11 and Windows code, needs OS X completion.
* * generic/tkArgv.c: Fix gcc warnings about 'cast to/fromdas2007-10-151-1/+26
| | | | | | | | | | | | | | | | | | | * generic/tkCanvUtil.c: pointer from/to integer of different * generic/tkCanvas.c: size' on 64-bit platforms by casting * generic/tkCursor.c: to intermediate types * generic/tkInt.h: intptr_t/uintptr_t via new PTR2INT(), * generic/tkListbox.c: INT2PTR(), PTR2UINT() and UINT2PTR() * generic/tkObj.c: macros. * generic/tkStyle.c: * generic/tkTextIndex.c: * generic/tkUtil.c: * generic/ttk/ttkTheme.h: * generic/ttk/ttkTreeview.c: * unix/tkUnixMenu.c: * unix/configure.in: * unix/configure: autoconf-2.59 * unix/tkConfig.h.in: autoheader-2.59
* Cleaning up whitespace, comments, declarations. No functional changes.dkf2007-06-241-16/+18
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* various "const" additions, in line with TIP #27nijtmans2007-01-181-2/+2
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* various "const" additions, in line with TIP #27nijtmans2007-01-031-2/+2
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* TIP 300 IMPLEMENTATIONKevin B Kenny2006-12-011-1/+5
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* * doc/ttk_Geometry.3, doc/ttk_Theme.3, doc/ttk_button.n:hobbs2006-10-311-1/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * doc/ttk_checkbutton.n, doc/ttk_combobox.n, doc/ttk_dialog.n: * doc/ttk_entry.n, doc/ttk_frame.n, doc/ttk_image.n: * doc/ttk_intro.n, doc/ttk_label.n, doc/ttk_labelframe.n: * doc/ttk_menubutton.n, doc/ttk_notebook.n, doc/ttk_panedwindow.n: * doc/ttk_progressbar.n, doc/ttk_radiobutton.n, doc/ttk_scrollbar.n: * doc/ttk_separator.n, doc/ttk_sizegrip.n, doc/ttk_style.n: * doc/ttk_treeview.n, doc/ttk_widget.n,: * generic/ttk/ttk.decls, generic/ttk/ttkBlink.c: * generic/ttk/ttkButton.c, generic/ttk/ttkCache.c: * generic/ttk/ttkClamTheme.c, generic/ttk/ttkClassicTheme.c: * generic/ttk/ttkDecls.h, generic/ttk/ttkDefaultTheme.c: * generic/ttk/ttkElements.c, generic/ttk/ttkEntry.c: * generic/ttk/ttkFrame.c, generic/ttk/ttkImage.c: * generic/ttk/ttkInit.c, generic/ttk/ttkLabel.c: * generic/ttk/ttkLayout.c, generic/ttk/ttkManager.c: * generic/ttk/ttkManager.h, generic/ttk/ttkNotebook.c: * generic/ttk/ttkPanedwindow.c, generic/ttk/ttkProgress.c: * generic/ttk/ttkScale.c, generic/ttk/ttkScroll.c: * generic/ttk/ttkScrollbar.c, generic/ttk/ttkSeparator.c: * generic/ttk/ttkSquare.c, generic/ttk/ttkState.c: * generic/ttk/ttkStubInit.c, generic/ttk/ttkStubLib.c: * generic/ttk/ttkTagSet.c, generic/ttk/ttkTheme.c: * generic/ttk/ttkTheme.h, generic/ttk/ttkThemeInt.h: * generic/ttk/ttkTrace.c, generic/ttk/ttkTrack.c: * generic/ttk/ttkTreeview.c, generic/ttk/ttkWidget.c: * generic/ttk/ttkWidget.h: * library/demos/ttk_demo.tcl, library/demos/ttk_iconlib.tcl: * library/demos/ttk_repeater.tcl: * library/ttk/altTheme.tcl, library/ttk/aquaTheme.tcl: * library/ttk/button.tcl, library/ttk/clamTheme.tcl: * library/ttk/classicTheme.tcl, library/ttk/combobox.tcl: * library/ttk/cursors.tcl, library/ttk/defaults.tcl: * library/ttk/dialog.tcl, library/ttk/entry.tcl: * library/ttk/fonts.tcl, library/ttk/icons.tcl: * library/ttk/keynav.tcl, library/ttk/menubutton.tcl: * library/ttk/notebook.tcl, library/ttk/panedwindow.tcl: * library/ttk/progress.tcl, library/ttk/scale.tcl: * library/ttk/scrollbar.tcl, library/ttk/sizegrip.tcl: * library/ttk/treeview.tcl, library/ttk/ttk.tcl: * library/ttk/utils.tcl, library/ttk/winTheme.tcl: * library/ttk/xpTheme.tcl: * macosx/ttkMacOSXTheme.c: * tests/ttk/all.tcl, tests/ttk/bwidget.test, tests/ttk/combobox.test: * tests/ttk/entry.test, tests/ttk/image.test: * tests/ttk/labelframe.test, tests/ttk/layout.test: * tests/ttk/misc.test, tests/ttk/notebook.test: * tests/ttk/panedwindow.test, tests/ttk/progressbar.test: * tests/ttk/scrollbar.test, tests/ttk/treetags.test: * tests/ttk/treeview.test, tests/ttk/ttk.test, tests/ttk/validate.test: * win/ttkWinMonitor.c, win/ttkWinTheme.c, win/ttkWinXPTheme.c: First import of Ttk themed Tk widgets as branched from tile 0.7.8 * generic/tkInt.h, generic/tkWindow.c: add Ttk_Init call, copy tk classic widgets to ::tk namespace. * library/tk.tcl: add source of ttk/ttk.tcl, define $::ttk::library. * unix/Makefile.in, win/Makefile.in: add Ttk build bits * win/configure, win/configure.in: check for uxtheme.h (XP theme).
* * generic/tkEntry.c: move hard-coded ALWAYS_SHOW_SELECTIONhobbs2006-09-061-1/+4
| | | | | | | | | | | * generic/tkInt.h: control of entry/text selection display * generic/tkText.c: based on focus to the Tcl level, * generic/tkWindow.c: controlled by ::tk::AlwaysShowSelection * library/tk.tcl: (boolean, private). [Bug 1553691] * macosx/tkMacOSXDefault.h: * unix/tkUnixDefault.h: * unix/tkUnixPort.h: * win/tkWinDefault.h:
* Style cleanupdkf2006-08-181-84/+79
| | | | Split older changelog entries into separate file
* * generic/tkFont.c: implementation of ATSUI text renderingdas2006-03-221-1/+21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | * generic/tkInt.h: in TkAqua provided by Benjamin * generic/tkTextDisp.c: Riefenstahl. [Patch 638966] * library/demos/unicodeout.tcl: * macosx/tkMacOSXFont.h (new file): * macosx/tkMacOSXFont.c: * tests/font.test: * unix/tkUnixFont.c: * win/tkWinFont.c: * generic/tkFont.c: moved MODULE_SCOPE declarations of * generic/tkFont.h: font helper procs into header files. * macosx/tkMacOSXButton.c: * macosx/tkMacOSXFont.h: * macosx/tkMacOSXMenubutton.c: * macosx/Wish.xcode/project.pbxproj: add new tkMacOSXFont.h file, * macosx/Wish.xcodeproj/project.pbxproj: turn off dead code stripping as it interferes with -sectcreate (rdar://4486223). * macosx/Wish.xcode/default.pbxuser: add TCLLIBPATH=/Library/Tcl * macosx/Wish.xcodeproj/default.pbxuser: env var setting to tktest. * unix/configure.in: fix detection of symbols build when enabling TkAqua debug code; filter nm output of libtclstub better to avoid error on intel macs [Bug 1415789]. * unix/configure: autoconf-2.59
* * generic/tkConsole.c: Substantial rewrite of [console] support.dgp2006-03-161-3/+1
| | | | | | | * generic/tkInt.h: Included Obj-ification of the [console] and [consoleinterp] commands, and reworking of all the supporting data structures for cleaner sharing and lifetime management especially in multi-threaded configurations.
* * unix/tcl.m4 (Darwin): add 64bit support, check for Tiger copyfile(),das2005-11-271-100/+97
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | add CFLAGS to SHLIB_LD to support passing -isysroot in env(CFLAGS) to configure (flag can't be present twice, so can't be in both CFLAGS and LDFLAGS during configure), don't use -prebind when deploying on 10.4, define TCL_IO_TRACK_OS_FOR_DRIVER_WITH_BAD_BLOCKING (rdar://3171542). (SC_ENABLE_LANGINFO, SC_TIME_HANDLER): add/fix caching, fix obsolete autoconf macros. Sync with tcl/unix/tcl.m4. * unix/configure.in: fix obsolete autoconf macros, sync gratuitous formatting/ordering differences with tcl/unix/configure.in. * unix/Makefile.in: add CFLAGS to wish/tktest link to make executable linking the same as during configure (needed to avoid loosing any linker relevant flags in CFLAGS, in particular flags that can't be in LDFLAGS). Avoid concurrent linking of wish and compiling of tkTestInit.o during parallel make, fix dependencies and flags for building tkMacOSXInit.o (checkstubs, checkexports): dependency and Darwin fixes (dist): add new macosx files. * macosx/tkMacOSXEvent.c (TkMacOSXProcessEvent): * macosx/tkMacOSXEvent.h: * macosx/tkMacOSXMouseEvent.c (TkMacOSXProcessMouseEvent): * macosx/tkMacOSXCarbonEvents.c: install standard application event handler, add & call functions to start and stop carbon even timer that runs the tcl event loop periodically during a nested carbon event loop in the toolbox (e.g. during menutracking) to ensure tcl timers etc continue to fire, register app event handler for menu tracking and HI command carbon events, move menu event handling to new handlers for those carbon events, no longer register for/handle appleevent carbon event (now dealt with by standard application event handler), event debugging code dynamically acquires carbon event debugging functions to allow use on Tiger where they are no longer exported from HIToolbox. * macosx/tkMacOSXFont.c (TkMacOSXUseAntialiasedText): * macosx/tkMacOSXKeyEvent.c (GetKeyboardLayout): * macosx/tkMacOSXCarbonEvents.c (TkMacOSXInitCarbonEvents): * macosx/tkMacOSXInit.c: * macosx/tkMacOSXInt.h: abstract common code to dynamically acquire address of a named symbol (from a loaded dynamic library) into new function TkMacOSXGetNamedSymbol() and macro TkMacOSXInitNamedSymbol. * macosx/tkMacOSXMenu.c (TkpNewMenu): * macosx/tkMacOSXMenubutton.c (MenuButtonInitControl): * macosx/tkMacOSXMenus.c (TkMacOSXHandleMenuSelect): switch to modern utf8 aware menu manager API, remove obsolete code, add error handling. * macosx/tkMacOSXMouseEvent.c: define OSX 10.3 or later only constants if necessary to allow compilation on OSX 10.2 * macosx/tkMacOSXWm.c (UpdateSizeHints): remove code that is never executed. * xlib/xgc.c (XCreateGC): sync with core-8-4-branch change. * generic/tk.h: add/correct location of version numbers in macosx files. * generic/tkInt.h: clarify fat compile comment. * macosx/Wish.pbproj/default.pbxuser (new file): * macosx/Wish.pbproj/jingham.pbxuser: * macosx/Wish.pbproj/project.pbxproj: * macosx/Wish.xcode/default.pbxuser: * macosx/Wish.xcode/project.pbxproj: * macosx/Wish.xcodeproj/default.pbxuser (new file): * macosx/Wish.xcodeproj/project.pbxproj (new file): new/updated projects for Xcode 2.2 on 10.4, Xcode 1.5 on 10.3 & ProjectBuilder on 10.2, with native tktest targets and support for universal (fat) compiles. * macosx/Tk-Info.plist (removed): * macosx/Wish-Info.plist (removed): * macosx/buildTkConfig.tcl (removed): remove obsolete build files. * macosx/README: clarification/cleanup, document new Xcode projects and universal (fat) builds via CFLAGS (i.e. ppc and i386 at the same time). * unix/Makefile.in: * unix/aclocal.m4: * unix/configure.in: * macosx/configure.ac (new file): add support for inclusion of unix/configure.in by macosx/configure.ac, allows generation of a config headers enabled configure script in macosx (required by Xcode projects). * macosx/GNUmakefile: rename from Makefile to avoid overwriting by configure run in tk/macosx, add support for reusing configure cache, build target fixes. * generic/tk3d.h: * generic/tkButton.h: * generic/tkCanvas.c: * generic/tkCanvas.h: * generic/tkColor.h: * generic/tkEntry.h: * generic/tkFileFilter.h: * generic/tkFont.c: * generic/tkFont.h: * generic/tkImage.c: * generic/tkImgPhoto.c: * generic/tkInt.h: * generic/tkMenu.c: * generic/tkMenu.h: * generic/tkMenubutton.h: * generic/tkScale.h: * generic/tkScrollbar.h: * generic/tkSelect.h: * generic/tkStubInit.c: * generic/tkStubLib.c: * generic/tkText.h: * generic/tkUndo.h: * macosx/tkMacOSXButton.c: * macosx/tkMacOSXDebug.c: * macosx/tkMacOSXDebug.h: * macosx/tkMacOSXDialog.c: * macosx/tkMacOSXDraw.c: * macosx/tkMacOSXEntry.c: * macosx/tkMacOSXFont.c: * macosx/tkMacOSXInt.h: * macosx/tkMacOSXMenu.c: * macosx/tkMacOSXMenubutton.c: * macosx/tkMacOSXMouseEvent.c: * macosx/tkMacOSXSend.c: * macosx/tkMacOSXSubwindows.c: * macosx/tkMacOSXWindowEvent.c: * macosx/tkMacOSXWm.c: * macosx/tkMacOSXXStubs.c: * unix/tkUnixButton.c: * unix/tkUnixMenu.c: * xlib/xgc.c: ensure externally visible symbols not contained in stubs table are declared as MODULE_SCOPE (or as static if not used outside of own source file), #ifdef out a few Xlib and aqua functions that are never called. These changes allow 'make checkstubs' to complete without error on Darwin with gcc 4. * macosx/tkMacOSXTest.c: * macosx/tkMacOSXPort.h: * win/tkWinTest.c: * generic/tkInt.decls: add functions needed by tktest to internal stubs table, correct signature of TkMacOSXHandleMenuSelect, add XSync to aqua Xlib stubs. * unix/tkUnixSend.c: * generic/tkText.c: * generic/tkTest.c: #ifdef unix only declarations. (TestmetricsCmd): unify win and mac implementation. (TestsendCmd): move to tkUnixSend.c to avoid access to global var. (TesttextCmd): move to tkText.c to avoid having to put all the internal text functions it uses into the stubs table. * generic/tkTextDisp.c: * macosx/tkMacOSXInit.c: * macosx/tkMacOSXKeyEvent.c: * macosx/tkMacOSXWindowEvent.c: * macosx/tkMacOSXXStubs.c: fix gcc 4 warnings. * macosx/tkMacOSXNotify.c: * macosx/tkMacOSXScrlbr.c: sync with core-8-4-branch. * generic/tkIntDecls.h: * generic/tkIntPlatDecls.h: * generic/tkIntXlibDecls.h: * generic/tkStubInit.c: * unix/configure: * unix/tkConfig.h.in: regen.
* * macosx/tkMacOSXInt.h: Move MODULE_SCOPE defn to tkInt.h and addhobbs2005-10-101-1/+40
| | | | | * generic/tkInt.h: WORDS_BIGENDIAN checks that will work with OS X universal binary compiles. (steffen)
* Tk-internal exit handler improvements. [Bug 749908]dkf2005-09-211-575/+520
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* 2005-03-23 Jim Ingham <jingham@apple.com>wolfsuit2005-03-231-3/+4
| | | | | | | | | | | | | | | | | | This is cleanup thanks to Neil Madden <nem@cs.nott.ac.uk>. * macosx/tkMacOSXWm.c (TkMacOSXWinStyle) New function. (TkUnsupported1ObjCmd): New function, replaces the un-objectified version of the command. * generic/tkInt.h: Swap TkUnsupported1Cmd for TkUnsupported1ObjCmd. * generic/tkWindow.c (): Ditto. This adds a "-notify" flag to "wm attributes" that will bounce the dock icon on Mac OS X. This is from Revar Desmera <revarbat@gmail.com> * macosx/tkMacOSXWm.c (WmAttrGetNotifyStatus, WmAttrSetNotifyStatus): New functions. (WmAttributesCmd): Add the -notify. * doc/wm.n: Document -notify.
* Improved version of Michael Kirkham's fix for parsing pad values. [1098779]dkf2005-01-111-1/+6
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* Attempt to fix [Bug 919066] by allowing the code that creates the regiondkf2004-10-261-1/+6
| | | | much more knowledge of the platform functions available to it.
* * doc/wm.n (iconphoto): added support for Tk photohobbs2004-10-051-1/+4
| | | | | | | | * generic/tkInt.h (TkDisplay): images as titlebar icons. TIP #159 * win/tkWinWm.c (WmIconphotoCmd): wm iconphoto ?-default? image1 ... * macosx/tkMacOSXWm.c (WmIconphotoCmd): Implemented for Win/Unix, * unix/tkUnixWm.c (WmIconphotoCmd): stubbed out for OS X. * tests/wm.test, tests/unixWm.test, tests/winWm.test: [Bug 815751]
* TIP#158 implementation; keypad keys on Win are now distinguishable.dkf2004-07-051-1/+2
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* * generic/tkEvent.c: Added three new functions: TkCreateExitHandler,davygrvy2003-12-211-1/+6
| | | | | | | | | | | | | | | | | * generic/tkInt.h: TkDeleteExitHandler, and TkFinalize. This adds * generic/tkMenu.c: an insertion point so Tk's exit handlers can be * generic/tkWindow.c: called on their own from tk85.dll's DllMain * mac/tkMacButton.c: for DLL_PROCESS_DETACH. These are private to * unix/tkUnixEvent.c: the binary and not exported. It is possible * win/tkWin32Dll.c: the Windows OS can unload Tk _prior_ to Tcl * win/tkWinEmbed.c: under some conditions such as ExitProcess(). * win/tkWinMenu.c: This avoids a dangling pointer problem when Tcl * win/tkWinX.c: does Tcl_Finalize after Tk has been unloaded. * win/winMain.c: DllMain's DLL_PROCESS_DETACH now protected with SEH as DeleteWindowsExitProc is causing an exception of its own under some teardown conditions. AT&T assembly syntax has not been added for MinGW yet. [Tcl Patch 858493]
* * generic/tkInt.h: move TkGetOptionSpec to stubs intDeclshobbs2003-10-131-4/+1
| | | | | | | | | | * generic/tkIntDecls.h: * generic/tkInt.decls: * generic/tkStubInit.c: * tkDecls.h: updated with latest genstubs * tkIntPlatDecls.h: * tkIntXlibDecls.h: * tkPlatDecls.h:
* Register the type of text indices. Also some exported symbol name policing...dkf2003-10-101-1/+2
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* tip 113 implementationvincentdarley2003-05-191-3/+4
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* * generic/tkBind.c (TkpGetBindingXEvent): Add helper methodmdejong2003-04-141-1/+3
| | | | | | | | | | | | | | that can be used to query the XEvent* for the currently executing binding. * generic/tkInt.h: Declare TkpGetBindingXEvent. * win/tkWinMenu.c (MenuKeyBindProc, TkWinMenuKeyObjCmd, TkpInitializeMenuBindings): Rename MenuKeyBindProc to TkWinMenuKeyObjCmd and convert it into a Tcl command named tk::tkWinMenuKey. Bind keyboard accelerator actions to this Tcl command instead of using a native C binding. This makes it possible to extend the existing binding with Tcl code and makes the Windows version work just like the unix version.