Gallery of Screenshots

of FE subsystems

( FE = Freedom Environment )

FE Home page > FE Screenshots directory page > This Gallery page

Groups of FE subsystem images below:

xpg Images     feNautilusScripts Images

feAppMenus Images     feHandyTools Images    

! Note !
Many of the screenshots here are slightly out-of-date,
but they indicate the appearance of the various FE GUI's.

The GUI screenshots here may be updated occasionally ---
and more screenshots may be added --- to show new FE GUI's or to
illustrate additional features of the previously represented GUI's.

Guide to using this page :

Many of the images below are 'thumbnail' images. Click on a 'thumbnail' image below to see a larger version of the image.

The larger image is shown in a separate window. This facilitates comparison between similar images.

To reveal or return to this web page, close or minimize the separate windows.


To download an image, you can right-click on an image and use an option like 'Save Image As ...' in the popup menu of your web browser.


NOTE:
The 'feHandyTools' system is no longer being developed. It is being replaced by the 'tkGooies' system. The 'feHandyTools' GUI images may be replaced someday by 'tkGooies' GUI images.

1a. The 'xpg' GUI --- when the 'Other' button has not been activated. Note the 'all-powerful' 'ShowAllMatches' button.

1b. The 'xpg' GUI, when the 'Other' button has been activated. Note the 'Backward', 'CaseSense' and 'RegExp' buttons, which apply to the 'Search (again)' button.

This image definitely needs to be updated. There are now 'SAM' options, below the 'ShowAllMatches' (SAM) button. And there is an 'EditVars' button to the right of the Color and Font buttons.

2a. The 'xpg' GUI, with the 'Other' options panel showing --- and the entire GUI in a dark blue color palette

2b. The FE Color Selector GUI which is used in the 'xpg', 'feAppMenus', and 'feHandyTools' subsystems, to allow for quickly changing the color scheme ('palette') of the GUI's in those subsystems.

3a. The FE Font-Selector GUI which is used in the 'xpg', 'feAppMenus', and 'feHandyTools' subsystems, to allow for quickly changing the font in the various widgets of the GUI's in those subsystems, in particular:
the font in the main 'text' widget of the 'xpg' GUI --- and the font in the 'button' widgets (the 'drawers') of the toolchests of the 'feAppMenus' and 'feHandyTools' subsystems.

3b. The FE Font-Selector GUI --- shown in a dark blue color palette.

There have been some minor changes to appearance of the FE FontSelector GUI. These images need an update.

The 'feColorSelector' and 'feFontSelector' utilities are available in the FE 'xpg' system.

A copy of the 'xpg', 'feColorSelector', and 'feFontSelector' utilities is also provided in the 'feAppMenus' subsystem and in the 'feHandyTools' (and 'tkGooies') subsystem.

It is a bit of a pain to keep the copies of 'xpg' and 'feColorSelector' and 'feFontSelector' synchronized in several FE subsystems --- but, for example, this allows people to install the 'feAppMenus' system, without having to install the 'xpg' and 'feColorSelector' and 'feFontSelector' utilities separately, in addition to installing 'feAppMenus'.

Another benefit:
The copies in several different systems serve as backups of these handy utilities --- even if they are slightly different in different FE subsystem releases.

1a. On the right of the image above is the top-level of the 'feNautilusScripts' menus. This FE menu is shown after right-clicking on a file in a directory and then moving the mouse cursor over the 'Scripts     >' option of the Nautilus file-manager popup menu --- which is the menu seen on the left in this image.

The 'top-level' 'feNautilusScripts' menu holds eleven of the main, most-used categories of 'feNautilusScripts'.

Note the 'zMORE' option at the bottom of the top-level 'feNautilusScripts' menu. It provides a menu of about 15-plus more categories of scripts.

The names of all these categories, including the 'zMORE' name, are the actual names of sub-directories of the $HOME/.gnome2/nautilus-scripts directory. The categories are in alphabetic order, the same order seen when the directories are listed by the Nautilus file manager.

1b. Here is a view of the 'zMORE' menu 'cascaded out' from the top-level 'feNautilusScripts' menu.

Note the 15-plus additional categories of FE Nautilus Scripts, in numero-alphabetic order, starting with '3Dtools'.

This image could use an update. The names of a few of these categories have been changed slightly --- and a couple of more categories have been added.

2a. Here is an image of the menu for the first of the categories on the top-level 'feNautilusScripts' menu --- the 'AUDIOtools' menu. The entries on this menu, and on the other categories menus,below, are the actual names of the FE Nautilus Script files.

This image (and several others here) could use an update. The names of the scripts in this category have been changed to follow a standardized naming convention --- and many scripts have been added.

2b. Here is an image that shows an original 'EXAMINEfiles' menu cascaded from the top-level 'feNautilusScripts' menu.

This image needs an update. The script names have been standardized, and many scripts have been added. (See images in next row.)

The script naming convention is described on an 'feNautilusScripts' NAMING CONVENTION web page.

3a. Here is an image that shows an updated 'EXAMINEfiles' menu cascaded from the top-level 'feNautilusScripts' menu.

This image shows the 'standardized' script names that were devised in early 2012, about a year-and-a-half after 'feNautilusScripts' was first released. This image also shows that many scripts have been added.

3b. Here is an image that shows a 'CHANGEfiles' menu cascaded from the top-level 'feNautilusScripts' menu.

This image shows the 'standardized' script names that were devised in early 2012, about a year-and-a-half after 'feNautilusScripts' was first released.

These 'CHANGEfiles' scripts are for general file changes, like general renaming of files. Changes to special file types, such as 'media' files, are done in other 'feNautilusScripts' groups, such as 'IMAGEtools' and 'VIDEOtools'.

4a. Here is an image that shows the 'FILESlists' menu cascaded from the top-level 'feNautilusScripts' menu.

This image needs an update. The script names have been standardized, and many scripts have been added.

4b. Here is an image that shows the 'FINDlists' menu cascaded from the top-level 'feNautilusScripts' menu.

This image needs an update. The script names have been standardized, and many scripts have been added.

5a. Here is an image that shows the 'IMAGEtools' menu cascaded from the top-level 'feNautilusScripts' menu.

This image needs an update. The script names have been standardized, and many scripts have been added. Also several SUB-CATEGORIES (sub-directories) have been added.

5b. Here is an image that shows the 'LinuxHELPS' menu cascaded from the top-level 'feNautilusScripts' menu.

This image needs an update. The script names have been standardized, and some scripts have been added. Also a SUB-CATEGORY (sub-directory) has been added --- to show helps at 'external' web pages.

6a. Here is an image that shows the 'PROCESSlists' menu cascaded from the top-level 'feNautilusScripts' menu.

This image needs an update. The script names have been standardized, and some scripts have been added.

6b. Here is an image that shows the 'SPACElists' menu cascaded from the top-level 'feNautilusScripts' menu.

This image needs an update. The script names have been standardized, and many scripts have been added.

7a. Here is an image that shows the 'TERMtools' menu cascaded from the top-level 'feNautilusScripts' menu.

This image needs an update. The script names have been standardized, and some scripts have been added.

7b. Here is an image that shows the 'VIDEOtools' menu cascaded from the top-level 'feNautilusScripts' menu.

This image needs an update. The script names have been standardized, and many scripts have been added. Also several SUB-CATEGORIES (sub-directories) have been added.

8. There are no images,yet, of the scripts in menus for the categories listed in the 'zMORE' menu. In mid-2012, those 'less-used' menus were still having scripts added to them, and the category names had not 'settled down' yet.

The following images show examples of the several kinds of 'zenity' dialog prompts that are used in the 'feNautilusScripts' to prompt for responses from the user.


z1a. Here is an image showing how the 'zenity' dialog utility is used in 'feNautilusScripts' to prompt for parameters from the user.

This is a 'zenity --entry' prompt for the '01_anyfile_show_manHELP4topic_...' script. As you can see, the 'zenity --entry' prompt allows for giving plenty of explanatory text for the prompt. In this case, many examples of proper input for this script are presented.


z1b. This image shows how a 'zenity --entry' prompt can be used to prompt for more than one string of input data.

This image comes from a change-string-in-filename(s) script in the 'CHANGEfiles' group of 'feNautilusScripts'.


z2a. Here is an image showing a 'zenity --info' prompt which can be used to simply present information to the user.

The user simply clicks the OK button to dismiss the dialog window.

This image comes from a jpeg EXIF data inquiry script in the 'IMAGEtools' group of 'feNautilusScripts'.


z2b. Here is an image showing a 'zenity' '--radiolist' prompt which can be used to prompt the user to select one item from a list of items.

The user simply clicks a 'radio-button' and then clicks on the OK button to pass the selection to the calling script.

This image comes from a show-log-files script in the 'LOGfiles' group of the 'zMORE' group of 'feNautilusScripts'.


z3a. Here is an image showing a 'zenity' '--list' prompt which can be used to prompt the user to select one item from a list of items.

This image comes from the script '01e_anyfile_show_X-FONTS_xfd.sh' in the 'FONTtools' group of the 'zMORE' group of 'feNautilusScripts'.


z3b. Here is another image showing a 'zenity' '--list' prompt which can be used to prompt the user to select one item from a list of items.

This image comes from a 2nd prompt in the script '01e_anyfile_show_X-FONTS_xfd.sh' in the 'FONTtools' group of the 'zMORE' group of 'feNautilusScripts'.

The 1st prompt asks for a font 'family' name. The 2nd prompt asks for one of the X-font names that exist within that font family.

These X-font names are becoming obsolete because scalable fonts, like 'TrueType' fonts, are more flexible for choosing from a wide range of sizes within a font family.


z4a. This image shows that there is a 'zenity --question' dialog --- which can be used to pose a yes-or-no question to the user --- that is, an OK-or-Cancel question.

This 'zenity' prompt is from one of the 'feNautilusScripts' in the 'SPACElists' group.


z4b. This image shows that there is even a 'zenity --calendar' dialog --- which can be used to show a calendar that can be paged right and left --- through months and years.

This 'zenity' prompt can return a selected date to a calling script. This zenity prompt is used in an 'feNautilusScript' in the 'OFFICEtools' group of the 'zMORE' group --- to simply show a calendar.


1a. You can have toolchest 'drawers' that startup your favorite applications --- on the top-level 'feAppMenus' toolchest.

You will see below how you can easily add/change/delete drawers of this menu.


1b. You can experiment with color changes by using the 'ChgColor' button at the bottom of any of the 'feAppMenus' toolchests --- for example, to get a color 'palette' that goes well with your desktop background.

The 'ChgColor' button starts up the FE ColorSelector GUI that is shown in the 'xpg' images section above.


2. If you click on the '>>' button at the bottom of ANY of the 'feAppMenus' toolchests, the toolchest expands to the right --- giving longer descriptions of the drawers, and exposing the 'EditChest' and 'EditVars' buttons.

Clicking on the 'EditChest' button puts you in edit mode (via an editor of your choice) on a '.chestdef' file that defines the drawers of the chest.

By editing that '.chestdef' file, you can add/delete/change drawers in the chest. This includes changing the executables that execute when you click on the drawer, as well as changing the short and long drawer descriptions that appear on the left and right portions of the expanded toolchest.

You can even change the icons that appear on the left of the drawers --- by changing icon filenames in the '.chestdef' file.

The format of the '.chestdef' file is very simple. The format is explained in the documentation that is shown by clicking on the 'Help' button at the bottom of any of the toolchests. The Help is in a text file that is QUICKLY shown with 'xpg'. (Don't you hate help that takes about half a minute or more to start up?)


3a. By clicking on the 'ChgFont' button at the bottom of ANY of the toolchests, you can experiment with different fonts, to find one that pleases you.

The 'ChgFont' button starts up the FE FontSelector GUI that is shown in the 'xpg' images section above.


3b. In these two toolchest images, the fonts are not 'anti-aliased', so they do not appear as nicely as they can be displayed.

These two images were taken when Tcl-Tk 8.4 was installed on my machine. With the Tcl-Tk 8.5 'wish' (window shell) interpreter, the fonts are anti-aliased.

The 'feAppMenus' images in this section are NOT anti-aliased, because the screenshots were taken before I switched to Tcl-Tk 8.5.

Many of the screenshots in the 'feHandyTools' section, below, will be anti-aliased, because the screenshots were taken after I switched to Tcl-Tk 8.5.


4a. When you click on the 'Applications Chest' drawer of the top-level 'feAppMenus' toolchest, this is the toolchest that pops up.

These are 20 categories that I find useful. As indicated above, you can use the 'EditChest' button on this toolchest to edit the '.chestdef' file that defines this toolchest.

So you can add/change/delete categories --- and you can even add a 'More' drawer to this toolchest to make a 'continuation-toolchest' of application categories.

Or you can consolidate down to about 10 categories, say, by consolidating toolchests --- by consolidating their '.chestdef' files.

4b. Just as in the row above, that showed the top-level 'feAppMenus' toolchest in two different fonts ... for the 'AppCategories' toolchest (or ANY of the feAppMenus toolchests), you can use the 'ChgFont' button to experiment with the font that is put in the Tk 'button' widgets that make the toolchest 'drawers'.

Slanted fonts like this do not look very good with Tcl-Tk 8.4, because they are not anti-aliased. (In fact, I blurred this image so that it does not look so bad.)

However, if you use Tcl-Tk 8.5, slanted fonts like this can look as nice as 'erect' fonts.


5. Just as we showed with the top-level feAppMenus toolchest, we can experiment with changing the color of ANY of the feAppMenus toolchests --- by clicking on the 'ChgColor' button of the toolchest.

6. Just as we showed with the top-level feAppMenus toolchest, we can expand ANY of the feAppMenus toolchests to the right --- by clicking on the '>>' button of the toolchest.

If you don't specify an icon file for a drawer, the toolchests default to using a 'default.gif' file --- which is a 'bullet' type of icon --- such as the icon seen on the left of each drawer in the image above.


7. This image shows how the toolchests pop away from each other. In this case, we see the top-level feAppMenus toolchest, the AppCategories toolchest, and the FTP toolchest --- where we could startup the Filezilla app.

These are not your typical 'cascading' toolchests. These are not connected to each other. When you let go of your mouse button, they do not disappear.

This can be very helpful if you want to use more than one app in a particular category. Or if you want to reuse an app multiple times in a login session.

You can close any toolchests you do not need by simply closing the window in the usual way --- click on the Close symbol ('X') at the top of the window.


8. Furthermore, you can drag the toolchests out of the way. For example, here I have dragged the 3 toolchests, that were seen in-full in the row above, to the bottom of the desktop, so that only the title bar of each of the toolchests is peeking above the bottom of the desktop.

Alternatively, one could minimize each toolchest window in the usual way, and the toolchest short-titles would appear in the taskbar at the bottom of this desktop --- as they indeed appear in the taskbar in this screenshot --- the three 'tabs' on the the right of the taskbar.


9. Here is an image of the 'Image / Photo tools' toolchest, as delivered.

You can use the 'EditChest' button of this toolchest, to edit its '.chestdef' file and remove (or comment out) drawers that you do not need --- and activate drawers for image/photo tools programs that you prefer to use.

And you can move your favorites to the top of the toolchest.

Note that you can have 'grayed out' drawers --- for example, to remind you of programs that you might want to install in the future.


10. Here is a view of the 'Image/Photo tools' toolchest, after the '>>' button has been clicked.

11. Here is one more example of one of the categories toolchests --- the WebBrowsers toolchest.

Again, you can use the 'EditChest' button of ANY toolchest, to edit its '.chestdef' file and remove (or comment out) drawers that you do not need --- and activate drawers for utility programs that you prefer to use.

For non-GUI programs, you could write a little 'wrapper' script to start them in a terminal window, like 'xterm', and call that wrapper script, instead of the non-GUI executable, in its drawer-line of the '.chestdef' file.


12. Here is a view of the 'WebBrowsers' toolchest, after the '>>' button has been clicked.

13. One button that we have not said much about is the 'EditVars' button that appears at the bottom-right of every feAppMenus toolchest.

When you click on that button, the following window appears.


14. This is where you can make font and color changes 'permanent', for ALL of the toolchests.

The 'ChgFont' and 'ChgColor' buttons only change the font/color for that one toolchest --- and only for that one instance of the toolchest. The change does not 'stick' for future openings of the toolchest.

With the 'EditFonts' and 'EditColors' buttons, you can make the font/color changes 'permanent' and make them apply to ALL the feAppMenus toolchests.

Furthermore, with the 'EditGeom' button, you can change geometry parameters, such as vertical and horizontal padding within 'button' widgets.

And with the 'EditApps' button, you can set your preferred applications --- text editors, HTML-readers, PDF-readers, etc.


1a. This is an image of the main toolchest of the 'feHandyTools' system.

There are twelve tool categories on this chest. And there is a 'MORE FE Handy Tools' drawer to provide access to about 15-plus more categories --- like the 'zMORE' menu item in the 'feNautilusScripts' subsystem.

In addition, there is an 'feNautilusScripts' drawer that gives access to Tcl-Tk directory- navigator/file-selector GUI's that allow the user to access ALL the scripts of the 'feNautilusScripts' subsystem --- EVEN IF THE USER DOES NOT HAVE 'Nautilus' INSTALLED.

Furthermore, there is an 'feAppMenus chest' drawer that gives access to the 'feAppMenus' subsystem from the main menu of the 'feHandyTools' subsystem.

Of course, for these bottom two drawers to work the 'feNautilusScripts' and 'feAppMenus' subsystems need to be installed.

Like the 'feAppMenus' system, if the user clicks on the '>>' button, 'EditChest' and 'EditVars' buttons are revealed.


1b. This is an image of the 'MORE FE Handy Tools' menu --- and its 15-plus categories.

Just like in the 'feAppMenus' subsystem, described in an image section above, there is an 'EditChest' button on all the toolchests by which the user can add/change/delete drawers of the 'feHandyTools' toolchests.

So, for example, if you did not have 'feAppMenus' and 'feNautilusScripts' installed, you could delete (or gray-out) those drawers on the main toolchest of 'feHandyTools'.

------

Note that many of the drawers of these 2 'main' and 'more' toolchests are grayed out because many categories were not populated with Tcl-Tk GUI utilities when these images were made.

Since then, grayed-out drawers of the main toolchest have been activated --- in particular, some utilities have been put in the 'IMAGEtools' and 'VIDEOtools' categories.


2a. An image of the 'AUDIO Tools' chest of 'feHandyTools'.

Its options (drawers) are similar to the menu items in the 'AUDIOtools' menu of the 'feNautilusScripts' subsystem. That menu can be seen in the 'feNautilusScripts' screenshot images section, above.


2b. An image of the 'Files Lists' chest of 'feHandyTools' --- similar to the 'FILESlists' menu of 'feNautilusScripts'.

3a. An image of the 'FIND Tools' chest of 'feHandyTools' --- similar to the 'FINDlists' menu of 'feNautilusScripts'.

3b. An image of the 'Linux/Unix HELPS' chest of 'feHandyTools' --- similar to the 'LinuxHELPS' menu of 'feNautilusScripts'.

4a. An image of the 'Disk SPACE tools' chest of 'feHandyTools' --- similar to the 'SPACElists' menu of 'feNautilusScripts'.

4b. An image of the 'TERMINAL tools' chest of 'feHandyTools' --- similar to the 'TERMtools' menu of 'feNautilusScripts'.

5. This image shows an example of how the 'feHandyTools' system uses Tcl-Tk GUI's to prompt for user input --- rather than the 'zenity' GUI's that are used in the 'feNautilusScripts' subsystem.

This is the GUI that is presented when the user clicks on the drawer labelled "Show 'man' help for a topic/pgm", in the 'Linux/Unix HELPS' toolchest shown a couple of rows above.


6. This is the GUI that is presented when the user clicks on the 'EditVars' button that is on the right (normally hidden) side of the 'feHandyTools' toolchests. (This is just like in the 'feAppMenus' subsystem.)

7a. Here is a general-purpose Directory-Selector Tcl-Tk GUI that can be used from Tcl-Tk GUI's such as those in the 'feHandyTools' subsystem (or from shell scripts) --- to prompt the user to select a directory name, via mouse clicks.

7b. Here is an image of a DirectoryNavigator-FileSelector Tcl-Tk GUI, with an 'Apply-a-Script' button. This GUI is the one that provides the capability to run ANY of the 'feNautilusScripts' against user-selected file(s) selected via this GUI.

For 'feNautilusScripts' that need the user to specify a directory rather than file(s), a selected script is applied using the navigated-to directory.

When the user clicks on the 'Apply-a-Script' button, a Script-Selector GUI appears.

There are additional screenshots and much more description on a How to run Nautilus scripts via 'feHandyTools' page.


8. Here is a general-purpose 'LineItem-Selector' GUI that can be used from shell scripts and Tcl-Tk GUI's of the 'feHandyTools' system.

This GUI is used in several of the MORE-category toolchests to present the user with various Linux configuration and log files that the user may wish to see.

This GUI is also used heavily in the 'PROGRAMMING Tools' 'demo chests' that run and/or show Tcl-Tk code samples. (See images of the 'demo chests' below.) In the 'code demos' ...

The user is given 3 options --- RUN or SHOW or RUN-and-SHOW Tcl-Tk code --- via another 'feHandyTools' Tcl-Tk GUI that is presented when the 'UseIt' button is clicked on this GUI. (The code samples are shown with the FE 'xpg' utility.)


9. Here is a toolchest that appears when the user clicks on the 'Plot Tools' drawer of the main 'feHandyTools' toolchest. (This is out of date. Two more plot utilities were added.)

Here the chest is shown in expanded form, so that you can see the 'EditChest' and 'EditVar' buttons that are available on ALL the 'feHandyTools' chests.

The FE PlotQuik tools are one set of tools that are not presented in the 'feNautilusScripts' subsystem. The only GUI's used in the 'feNautilusScripts' subsystem are GUI's that are generated by the 'zenity' utility. These Tcl-Tk PlotQuik tools are more elaborate GUI's --- capable of a lot of 'simultaneous' inputs.


10a. Here is an image of the 'PlotQuik Pie-Chart' GUI of the 'PlotQuik' tools of 'feHandyTools'.

10b. Here is an image of the 'PlotQuik XY (Points-and/or-Lines)' GUI of the 'PlotQuik' tools of 'feHandyTools'.

11a. Here is an image of the 'PlotQuik XY, from a MathExpression' GUI of the 'PlotQuik' tools of 'feHandyTools'.

11b. Here is an image of the 'PlotQuik XY, from a File (with 2 or 3 columns of data)' GUI of the 'PlotQuik' tools of 'feHandyTools'.

12a. This is an image of the 'PROGRAMMING tools' toolchest that is presented when the user clicks on the 'PROGRAMMING tools' drawer of the 'MORE FE Handy Tools' (continuation-of-main-categories) toolchest.

12b. This is an image of the Tcl-Tk programming 'help-chest' that is shown when the user clicks on the 'Tcl-Tk programming help-chest' drawer of the 'Programming Tools' toolchest.

13a. This is an image of the Tcl-Tk 'Core Demos' chest which is presented after clicking on the 'Core Tcl-Tk demos' drawer of the Tcl-Tk Help chest. These are demo Tcl-Tk scripts that are delivered with the Tcl-Tk interpreter system.

13b. This is an image of the Tcl-Tk 'FE Demos' chest which is presented after clicking on the 'FE Tcl-Tk demos' drawer of the Tcl-Tk Help chest.

14a. This is an image of the Tcl-Tk 'Wiki Demos' chest which is presented after clicking on the 'wiki Tcl-Tk demos' drawer of the Tcl-Tk Help chest. These drawers present scripts that have been adapted from demo scripts at the Tcl-Tk wiki --- at wiki.tcl.tk.

14b. This is an image of the Tcl-Tk 'Wiki' Games selector GUI that is presented after clicking on the 'Wiki GAME Demos' drawer of the Tcl-Tk 'Wiki Demos' chest.

Note that there are over 25 Tcl-Tk game demos that are shipped with the 'feHandyTools' subsystem.

15a. Here is an image of the '15 tiles' puzzle game --- an implementation from the 'Core' demos group.

15b. Here is an image of the '15 tiles' game --- an alternate implementation, from the 'Wiki' demos group.

16. Here is an image of an implementation of the classic 'Asteroids' game --- a Tcl-Tk implemenation in the 'Wiki' demos group.

17a. Here is an animated Rube Goldberg device programmed by Keith Vetter, using various line and fill commands on a Tcl-Tk 'canvas'.

17b. Here is my first-pass at a Tcl-Tk GUI that demonstrates the results of various options of the 'side', 'anchor', 'fill', and 'expand' parameters of the Tk geometry 'pack' commnd.

In this GUI, a click on the 'Refresh' button generates a new set of 4 x 4 = 16 parameters for the four frame widgets of this GUI --- using a 'random generation' function of Tcl.

18a. Here is my 2nd pass at a Tcl-Tk GUI that demonstrates the results of various options of the 'side', 'anchor', 'fill', and 'expand' parameters of the Tk geometry 'pack' commnd --- on 4 Tk 'frame' widgets.

This implementation is 'deterministic' rather than random. In this GUI, there are 4 x 4 = 16 Tk option-buttons that the user can specifically set.

18b. Here is another view of the GUI labelled '18a'. In this view, a different set of 16 'pack' parameters has been set. Then the 'Refresh' button was clicked, in order to apply those 16 parameters.

This page is getting loaded-down with images. I had better stop now.

But there are many more images that it would be nice to show here --- images of Tk GUI's that I wrote for this 'feHandyTools' subsystem --- and images of Tk Demos, categorized into the 'Core', 'Wiki', and 'FE' groups. The 'Core' demos are installed in a system directory when the Tcl-Tk 'wish' interpreter is installed. The 'Wiki' demos come from the Tcl-Tk Wiki site. The 'FE' demos were written by me.

Some of the demos would blow your mind --- such as the 3D Viewer demo (by Mark Stucky) in the '3D demos' category of the Tcl-Tk 'Wiki' demos. It is hard to believe that a scripting language can quickly do 2D-rendering of the rotation of a 3D model with hundreds of surface facets (polygons) --- without using hardware-acceleration (GPU's in graphics cards).

So try out some of the 'Wiki' Tcl-Tk demos --- especially Keith Vetter's plane-geometry theorem animations and gear-and-mechanism animations on a Tk 'canvas'.

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Page was created 2012 Apr 09.
Page was changed 2012 Apr 18.
Page was changed 2018 Aug 08. (Added css and javascript to try to handle text-size for smartphones, esp. in portrait orientation.)