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man pages section 1: User Commands

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Updated: Thursday, March 14, 2019

tk_getOpenFile (1t)


tk_getOpenFile - pop up a dialog box for the user to select a file to open or save.


tk_getOpenFile ?option value ...?
tk_getSaveFile ?option value ...?


tk_getOpenFile(1t)           Tk Built-In Commands           tk_getOpenFile(1t)


       tk_getOpenFile,  tk_getSaveFile  -  pop up a dialog box for the user to
       select a file to open or save.

       tk_getOpenFile ?option value ...?
       tk_getSaveFile ?option value ...?

       The procedures tk_getOpenFile and tk_getSaveFile pop up  a  dialog  box
       for  the user to select a file to open or save. The tk_getOpenFile com-
       mand is usually associated with the Open command in the File menu.  Its
       purpose  is  for  the user to select an existing file only. If the user
       enters a non-existent file, the dialog box  gives  the  user  an  error
       prompt  and  requires  the user to give an alternative selection. If an
       application allows the user to create new files, it  should  do  so  by
       providing a separate New menu command.

       The  tk_getSaveFile command is usually associated with the Save as com-
       mand in the File menu. If the user enters a file that  already  exists,
       the  dialog  box prompts the user for confirmation whether the existing
       file should be overwritten or not.

       The following option-value pairs are possible as command line arguments
       to these two commands:

       -confirmoverwrite boolean
              Configures  how  the  Save  dialog reacts when the selected file
              already exists, and saving would overwrite  it.   A  true  value
              requests  a  confirmation  dialog  be  presented to the user.  A
              false value requests that the overwrite take place without  con-
              firmation.  Default value is true.

       -defaultextension extension
              Specifies  a string that will be appended to the filename if the
              user enters a filename without an extension. The  default  value
              is  the  empty string, which means no extension will be appended
              to the filename in any case. This option is ignored on Mac OS X,
              which  does  not  require  extensions to filenames, and the UNIX
              implementation guesses  reasonable  values  for  this  from  the
              -filetypes option when this is not supplied.

       -filetypes filePatternList
              If a File types listbox exists in the file dialog on the partic-
              ular platform, this option gives the filetypes in this  listbox.
              When  the  user choose a filetype in the listbox, only the files
              of that type are listed. If this option is unspecified, or if it
              is  set  to  the empty list, or if the File types listbox is not
              supported by the particular platform then all files  are  listed
              regardless  of their types. See the section SPECIFYING FILE PAT-
              TERNS below for a discussion on the contents of filePatternList.

       -initialdir directory
              Specifies that the files in directory should be  displayed  when
              the dialog pops up. If this parameter is not specified, the ini-
              tial directory defaults to the current working directory on non-
              Windows systems and on Windows systems prior to Vista.  On Vista
              and later systems, the initial directory defaults  to  the  last
              user-selected  directory  for  the application. If the parameter
              specifies a relative path, the return  value  will  convert  the
              relative path to an absolute path.

       -initialfile filename
              Specifies  a filename to be displayed in the dialog when it pops

       -message string
              Specifies a message to include in the client area of the dialog.
              This is only available on Mac OS X.

       -multiple boolean
              Allows the user to choose multiple files from the Open dialog.

       -parent window
              Makes  window  the  logical  parent of the file dialog. The file
              dialog is displayed on top of its parent window. On  Mac  OS  X,
              this  turns  the file dialog into a sheet attached to the parent

       -title titleString
              Specifies a string to display as the title of the dialog box. If
              this option is not specified, then a default title is displayed.

       -typevariable variableName
              The global variable variableName is used to preselect which fil-
              ter is used from filterList when the dialog box is opened and is
              updated when the dialog box is closed, to the last selected fil-
              ter. The variable is read once at the beginning  to  select  the
              appropriate filter. If the variable does not exist, or its value
              does not match any filter typename, or is empty ({}), the dialog
              box  will  revert to the default behavior of selecting the first
              filter in the list. If the dialog is canceled, the  variable  is
              not modified.

       If  the  user  selects  a  file, both tk_getOpenFile and tk_getSaveFile
       return the full pathname of this file. If the user cancels  the  opera-
       tion, both commands return the empty string.

       The  filePatternList  value given by the -filetypes option is a list of
       file patterns. Each file pattern is a list of the form
              typeName {extension ?extension ...?} ?{macType ?macType ...?}?
       typeName is the name of the file type described by  this  file  pattern
       and  is  the text string that appears in the File types listbox. exten-
       sion is a file extension for this file pattern.   macType  is  a  four-
       character Macintosh file type. The list of macTypes is optional and may
       be omitted for applications that do not need to execute on  the  Macin-
       tosh platform.

       Several  file  patterns  may have the same typeName, in which case they
       refer to the same file type and share the same entry  in  the  listbox.
       When the user selects an entry in the listbox, all the files that match
       at least one of the file  patterns  corresponding  to  that  entry  are
       listed.  Usually,  each  file pattern corresponds to a distinct type of
       file. The use of more than one file pattern for one  type  of  file  is
       only necessary on the Macintosh platform.

       On  the  Macintosh  platform, a file matches a file pattern if its name
       matches at least one of the extension(s) AND it belongs to at least one
       of  the macType(s) of the file pattern. For example, the C Source Files
       file pattern in the sample code matches  with  files  that  have  a  .c
       extension  AND  belong to the macType TEXT. To use the OR rule instead,
       you can use two file patterns, one with the  extensions  only  and  the
       other with the macType only. The GIF Files file type in the sample code
       matches files that either have a .gif extension OR belong to  the  mac-
       Type GIFF.

       On the Unix and Windows platforms, a file matches a file pattern if its
       name matches at least one of the extension(s) of the file pattern.  The
       macTypes are ignored.

       On the Unix and Macintosh platforms, extensions are matched using glob-
       style pattern matching. On the Windows platform, extensions are matched
       by  the  underlying  operating system. The types of possible extensions

       (1)    the special extension "*" matches any file;

       (2)    the special extension "" matches any files that do not  have  an
              extension (i.e., the filename contains no full stop character);

       (3)    any character string that does not contain any wild card charac-
              ters (* and ?).

       Due to the different pattern matching rules on the  various  platforms,
       to  ensure  portability,  wild  card  characters are not allowed in the
       extensions, except as in the special extension "*".  Extensions without
       a  full  stop character (e.g.  "~") are allowed but may not work on all

              set types {
                  {{Text Files}       {.txt}        }
                  {{TCL Scripts}      {.tcl}        }
                  {{C Source Files}   {.c}      TEXT}
                  {{GIF Files}        {.gif}        }
                  {{GIF Files}        {}        GIFF}
                  {{All Files}        *             }
              set filename [tk_getOpenFile -filetypes $types]

              if {$filename ne ""} {
                  # Open the file ...

       See attributes(7) for descriptions of the following attributes:

       |Availability   | runtime/tk-8     |
       |Stability      | Uncommitted      |

       file selection dialog

       This    software    was    built    from    source     available     at
       https://github.com/oracle/solaris-userland.    The  original  community
       source        was        downloaded        from         https://source-

       Further information about this software can be found on the open source
       community website at https://www.tcl.tk/.

Tk                                    4.2                   tk_getOpenFile(1t)