Hi...

The attached patch fixes the major problems of libgui on native windows 
(mingw) regarding compilation and 64bit. It also adjusts to new tcl/tk 
versions. There are still some warnings left I have to adress later but 
in the current shape it runs here now successfully for some weeks.

This is just a first rough version. More polishing here is needed. There 
are also a bunch dead code in which can be removed.

Changelog:

2012-03-23  Roland Schwingel <roland.schwingel@onevision.com>

     * src/subcommand.c,src/subcommand.h
     (subcommand_implementation,ide_create_command_with_subcommands):
     Make some params const to match tcl/tk changes.
     * src/tclcursor.c (get_cursor_size,get_cursor_position): Ditto.
     * src/tclmsgbox.c: Include windows.h early.
     (msgbox_init,msgbox_exit): Take care about encodings to windows 
functions.
     (msgbox_thread): Use correct api call here.
     (msgbox_internal,msgbox): Make CONST84 where needed.
     * src/tclwinmode.c (seterrormode_command): Ditto.
     * src/tclshellexe.c (shell_execute_command): Ditto. Plus correct 
cast return
     value to shut up 64bit gcc.
     * src/tclwinfont.c (win_choose_font): Make CONST84 where needed and
     use dedicated windows api.
     * src/tclwinprint.c (winprint_page_setup_command): Make 
const/CONST84 where needed.
     
(winprint_print_text_options,winprint_print_text_invoke,winprint_print_command): 
Ditto.
     (winprint_print_text_invoke,): Ditto.
     (winprint_start,winprint_print_commandwinprint_abort_command): use 
dedicated windows structs/api.
     * src/tkTable.c: Obsolete old dprint stuff.
     
(StringifyObjects,Tk_TableObjCmd,TableWidgetObjCmd,TableConfigure,TableFetchSelection): 
adjust const.
     (selCmdNames,commandNames,updateOpts): make const.
     * src/tkTable.h: Adjust windows includes. include stdint.h. define 
CONST86 if missing. Deine
     PTR2INT/INT2PTR taken from tcl if missing. Make some functions const.
     * src/tkTableCmds.c: Make bdCmdNames and clearnames CONST84.
     * src/tkTableEdit.c: Make modCmdNamesand rcCmdNames CONST84.
     * src/tkTableTag.c: Make tagCmdNames CONST84.
     (TableTagGetEntry): Make param argcv CONST84.
     (TableInitTags): Make some internal strings CONST84.
     (FindRowColTag): Ditto.
     (Table_TagCmd): Ditto.
     * src/tkTableUtil.c (TableOptionBdSet):Ditto.
     (TableOptionBdGet): Make retval CONST86. Fix ptr/int arithmetics.
     (Cmd_OptionSet): Make param value CONST84.
     (Cmd_OptionGet): Make retval CONST86.
     * src/tkTableWin.c (StickyPrintProc): Ditto. Make some internal 
strings CONST84.
     (StickyParseProc): Make param value CONST84.
     * src/tkWarpPointer.c: Include windows.h ahead of tk.h.
     (WarpPointer): Remove unused var.
     * src/tkWinPrintCanvas.c (PrintCanvasCmd): use dedicated windows 
structs/api.
     Fix casting.
     * src/tkWinPrintText.c (PrintTextCmd): Add #if case for compiling 
against tcl 8.5 and up.
     use dedicated windows structs/api.
     (ide_delete_print_text_command): Delete unused static function.
     (DisplayDLineToDrawable): Add #if case for compiling against tcl 
8.5 and up. Fix casting.

Any comments? Is this ok?

Roland