AutoHotkey Tip of the Week: Increase the Flexibility of Menus by Passing Data with the BoundFunc Object

Streamline and Add Power to Hotstring Menus by Binding Action Parameters Directly to Each Menu Item

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If you use AutoHotkey menus, then you may find this blog the most useful menu tip yet. At first, using the BoundFunc Object to pass data may seem confusing, but, once understood, it opens up many more opportunities for taking advantage of menus in your AutoHotkey scripts.

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As often happens when working on an AutoHotkey script, a deeper understanding of the available tools completely changes the direction of the project. While all of the Menu tricks I’ve offered in the past HotstringMenu.ahk scripts still work (and you may want to continue using many of those techniques), the following approach which combines arrays, the variadic function parameter, and the boundfunc object creates a cleaner, more functional structure for generating Hotstring replacement menus. In short, implementing the boundfunc object allows me to drop many of those previous menu tricks and build menus using virtually any menu item format without regard for their later use through the value of the A_ThisMenuItem variable.

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AutoHotkey Tip of the Week: Flexible AutoHotkey Hotstring Menus Using Arrays

New Parameters for the HotstringMenu() Function Adds Flexibility and Power to Pop-up Menus

In my last blog, I started looking at adding the variadic parameter (accepts multiple inputs) and a Menu subroutine parameter to the HotstringMenu() function. While in the process of creating alternative Label subroutines, I found that changing a subroutine often called for a new menu-creating function. Rather than resorting to multiple functions, I decided to add one more parameter for tailoring the master function.

A Multitude of AutoHotkey Tips and Tricks

Note: This blog discusses the use of AutoHotkey object-based arrays (simple and associative) with the function’s variadic parameter. A review of my books demonstrated that most included discussions of arrays (pseudo-arrays and object-based arrays). In particular,  Chapter 12.1.5 “Using Associative Arrays to Solve the Instant Hotkey Data Recall Problem” in the book Jack’s Motley Assortment of AutoHotkey Tips explains the difference between the various array types while offering a practical example of an associative array.

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AutoHotkey Tip of the Week: Use the Variadic Function Parameter for an Unknown Number of Values in Hotstring Menus

What To Do When You Don’t Know How Many Values You Will Use? For Hotstring Menus, the Variadic Function Parameter Allows a Variable Number of Arguments or Direct Array Input

Variadic Function: One which accepts a variable number of arguments.

MenuEmojiTagsLight Bulb!In the blog, “AutoHotkey Tip of the Week: Hotstring Menu Techniques for Inserting Symbols and Emojis“, I discussed switching from the deprecated StringSplit command to  StrSplit() function before posting the scriptAfter posting my new HotstringMenu.ahk script on the AutoHotkey forum, I received the following comment from the user Delta Pythagorean. I have mixed feelings about the recommended changes:

You can simplify this down by making the parameter variadic and letting the user chose which label to set the menu to work off of.

:x:brb::HotStringMenu("MenuLabel","Hello",,"Goodbye","See you later!")

  MsgBox, % "You said: " A_ThisMenuItem

HotstringMenu(Handle, TextList*) {
  For Each, Item in TextList
    Menu, MyMenu, Add, % Item, % (Item != "") ? Handle : ""
  Menu, MyMenu, Show
  Menu, MyMenu, DeleteAll

I like the overall concept. This change to the HotstringMenu() function expands its capabilities by adding a selectable subroutine Label name and uses a variadic parameter which allows the functions to accept an unknown number of values. Continue reading