Syntax Considerations for reading the M-Code:

All of the handles to the various objects created in each GUI, as well as data needed to run the GUI, are stored in a main structure called S. The fieldnames for handles are in lowercase letters, and the fieldnames for data are in uppercase letters. Callback function names are designated with the fieldname of the object to which they correspond, followed by '_call.' Other function names are similarly designated. For instance, a keypressfcn will end in '_kpfcn' and a buttondownfcn will end in '_bdfcn.' The code of each GUI is generously commented, and subtle points may be examined in the comments (see for example the last comment block in GUI_37). If anything seems unclear, look first in the comments, and if satisfaction is not found there feel free to email me.

THE CODE IN THESE FILES IS MEANT TO BE READ, NOT JUST USED!

Therefore, if there is a need for more elaboration in the comments somewhere, please let me know.

Simple summaries of the GUIs are given below. See the help for each individual GUI for more details. Also see the accompanying pdf file for more general comments.

Author: Matt Fig Contact: popkenai@yahoo.com

Contents

GUI_1 Explore simple string manipulation.

Pushing the pushbutton deletes the string elements of a listbox one at a time.

GUI_2 Explore simple string manipulation.

Pushing the pushbutton adds to the string elements of a listbox. The added string can be chosen by the user through an editbox.

GUI_3 Explore visibility properties.

A uicontrol element is set to be visible and invisible by a checkbox.

GUI_4 Explore simple string manipulation.

A multi-line editbox is created, and its string is added to a listbox by a pushbutton.

GUI_5 Explore simple string manipulation and user notification.

A pushbutton deletes the text in a textbox one character at a time. When the string is empty, the user is notified of this fact.

GUI_6 Explore selection determination.

Pushing the pushbutton reveals which, if any, of the radiobuttons is currently selected.

GUI_7 Explore selection determination and counting.

Selecting an item from the popup causes the textbox to display the number of times the item has been selected.

GUI_8 Explore selection determination for a buttongroup.

Pushing the pushbutton updates an editbox to display which radiobutton in the uibuttongroup is selected.

GUI_9 Explore user notification.

Pushing the pushbutton causes the GUI to simulate a running process and let the user know this process has not finished.

GUI_10 Explore making an image visible and invisible.

Just setting the axes visible/invisible is not enough!

GUI_11 Explore GUI use to stop a FOR loop.

Pushing the pushbutton causes the FOR loop to stop. Two different uses of GUIs are explored through the use of two FOR loops which the user must activate.

GUI_12 Explore mouse pointer manipulation.

Pushing the pushbutton to close the GUI proves to be very difficult.

GUI_13 Explore slider and editbox interaction.

An editbox is used to display and manipulate the current position of a slider.

GUI_14 Explore string color control.

A listbox with strings of different colors is presented. Pushing the pushbutton prints the user's choice to the command window.

GUI_15 Explore simple string manipulation.

An editbox is presented which has text that the user can copy, but not change.

GUI_16 Explore slider and editbox interaction.

Three editboxes are used to display and manipulate the current position, minimum and maximum of a slider.

GUI_17 Explore clock and timer use in a GUI.

A single textbox is used to display a running clock.

GUI_18 Explore the buttondownfcn for an axes.

Clicking in the axes creates a random line. Right-clicking deletes that line.

GUI_19 Explore counting and argument detection.

Pushing either of the pushbuttons causes the total number of pushes and the number of arguments passed to one of their callbacks to display.

GUI_20 Explore popup selection determination.

Choosing an item from the popup causes the editbox to display the choice.

GUI_21 Explore popup selection determination and manipulation.

Similar to GUI_20, except that the editbox is allowed to select a value from the popup.

GUI_22 Explore popup selection determination and manipulation.

Similar to GUI_21, except that the editbox is allowed to select a value from the popup. The editbox may also add an item to the popup.

GUI_23 Explore multiple-figure data-passing, and the stacking order.

An editbox is made which will add a title to a selected figure/axes.

GUI_24 Explore multiple-figure data-passing.

Pushing the pushbutton creates another GUI with only a single editbox. Any string entered into the new editbox is placed into the first GUI.

GUI_25 Explore file selection/manipulation.

A GUI is made which will list all of the .jpg files in the current directory. When a file is selected, the data is loaded into the base workspace.

GUI_26 Explore listbox choice restriction.

Three listboxes are created with the same lists. The user is not allowed to have any two listboxes show the same choice.

GUI_27 Explore pointer location detection and display.

An axes is created and the current location of the mouse pointer in axes coordinates is displayed as a title.

GUI_28 Explore contextmenues and buttondownfcn.

An axes is created and clicking in the axes plots a point. Options are available by right-clicking on the axes.

GUI_29 Explore multiple figure interaction.

A slider is created which controls the xlim of a plot. Closing one figure closes them both.

GUI_30 Explore callback strings.

Same as GUI_29, only the task of controlling the xlim is accomplished through callback strings.

GUI_31 Explore multiple interactions among uicontrols.

A simple calculator is created which features several interactions occurring among uicontrols.

GUI_32 Explore exporting data to the base workspace.

Same as GUI_31, except the GUI can be called with a string argument. This string argument will be the name of a variable created in the base workspace when the GUI is closed.

GUI_33 Explore exporting data to the base workspace.

Same as GUI_31, except a variable will be created in the base workspace through a contextmenu.

GUI_34 Explore image capturing with a printscreen GUI.

A GUI is created which captures an image of the users desktop.

GUI_35 Explore fake tabbed panels.

A GUI is created with togglebuttons that acts like the tabs on panels.

GUI_36 Explore a custom dialog box. GUI returns data to caller.

A GUI is created which returns a string to whatever function called it, or the base workspace.

GUI_37 Explore string manipulation and nested functions.

An editbox is created which hides the users strings as asterisks. True or false values are returned depending on if the user enters the correct password or not.

GUI_38 Explore the user of JAVA and focussing issues.

A simple GUI is created which has a pushbutton. Normally the pushbutton would retain focus after it has been pushed. This would the require the user to click on the figure in order that the figure's keypressfcn should be accessable. The figure is given focus after the button press with the help of JAVA.

GUI_39 Explore a simple drawing program and image saving.

A blank palette is created which allows the user to draw whatever is desired. Right-clicking provides color options. The ability to save the drawing in an image format is provided.

GUI_40 Explore setting the background of pushbuttons to match an image.

A GUI is created which has an image as a background. Several buttons which can be used to manipulate the image blend in with the image.

GUI_41 Explore saving the state of a GUI system.

Three figures make up a system for the user. The state of the system may be saved and loaded.

Published with MATLAB® 7.5