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SlowCoder74

OnEvent mode benefits?

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SlowCoder74

Message Loop - This is the default method that AutoIT uses, similar to C-style languages.  Involves including the message capture into the main loop.

Event Driven - VB style.  The main loop can process whatever (or nothing).  When an event is generated, the appropriate function is called to handle the event.

What are the benefits to using each of these modes?  Speed?  Code flow?

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BrewManNH

With message loop you don't have to have as many functions as you normally would with OnEvent mode, message mode doesn't allow queing the messages from the controls, so you may miss some if you click too fast and your script is doing something else. I tend to use both myself, and I have no preference of one over the other.


If I posted any code, assume that code was written using the latest release version unless stated otherwise. Also, if it doesn't work on XP I can't help with that because I don't have access to XP, and I'm not going to.
Give a programmer the correct code and he can do his work for a day. Teach a programmer to debug and he can do his work for a lifetime - by Chirag Gude
How to ask questions the smart way!

I hereby grant any person the right to use any code I post, that I am the original author of, on the autoitscript.com forums, unless I've specifically stated otherwise in the code or the thread post. If you do use my code all I ask, as a courtesy, is to make note of where you got it from.

Back up and restore Windows user files _Array.au3 - Modified array functions that include support for 2D arrays.  -  ColorChooser - An add-on for SciTE that pops up a color dialog so you can select and paste a color code into a script.  -  Customizable Splashscreen GUI w/Progress Bar - Create a custom "splash screen" GUI with a progress bar and custom label.  -  _FileGetProperty - Retrieve the properties of a file  -  SciTE Toolbar - A toolbar demo for use with the SciTE editor  -  GUIRegisterMsg demo - Demo script to show how to use the Windows messages to interact with controls and your GUI.  -   Latin Square password generator

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Melba23

BrewManNH,

 

message mode doesn't allow queing the messages from the controls

Simce when? Try pressing ths button several times in quick succession - they are all honoured. ;)

#include <GUIConstantsEx.au3>

$hGUI = GUICreate("Test", 500, 500)
$cButton = GUICtrlCreateButton("Press", 10, 10, 80, 30)
GUISetState()

While 1
    Switch GUIGetMsg()
        Case $GUI_EVENT_CLOSE
            Exit
        Case $cButton
            ConsoleWrite("Pressed at " & @SEC & @CRLF)
            Sleep(1000)
    EndSwitch
WEnd
SlowCoder74,

A major disadvantage of OnEvent mode is that you cannot pass parameters to functions - or not without a lot of faffing about. Like BrewmanNH I use both, but I tend to favour MessageLoop unless there is a really good reason to use OnEvent. :)

M23


Public_Domain.png.2d871819fcb9957cf44f4514551a2935.png Any of my own code posted anywhere on the forum is available for use by others without any restriction of any kind

Open spoiler to see my UDFs:

Spoiler

ArrayMultiColSort ---- Sort arrays on multiple columns
ChooseFileFolder ---- Single and multiple selections from specified path treeview listing
Date_Time_Convert -- Easily convert date/time formats, including the language used
ExtMsgBox --------- A highly customisable replacement for MsgBox
GUIExtender -------- Extend and retract multiple sections within a GUI
GUIFrame ---------- Subdivide GUIs into many adjustable frames
GUIListViewEx ------- Insert, delete, move, drag, sort, edit and colour ListView items
GUITreeViewEx ------ Check/clear parent and child checkboxes in a TreeView
Marquee ----------- Scrolling tickertape GUIs
NoFocusLines ------- Remove the dotted focus lines from buttons, sliders, radios and checkboxes
Notify ------------- Small notifications on the edge of the display
Scrollbars ----------Automatically sized scrollbars with a single command
StringSize ---------- Automatically size controls to fit text
Toast -------------- Small GUIs which pop out of the notification area

 

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BrewManNH

It didn't used to work that way, as the GUIGetMsg would clear the queue after getting the last message, at least that's how I remember it, but it's been a while since I've bothered checking I may have mis-remembered. ;)


If I posted any code, assume that code was written using the latest release version unless stated otherwise. Also, if it doesn't work on XP I can't help with that because I don't have access to XP, and I'm not going to.
Give a programmer the correct code and he can do his work for a day. Teach a programmer to debug and he can do his work for a lifetime - by Chirag Gude
How to ask questions the smart way!

I hereby grant any person the right to use any code I post, that I am the original author of, on the autoitscript.com forums, unless I've specifically stated otherwise in the code or the thread post. If you do use my code all I ask, as a courtesy, is to make note of where you got it from.

Back up and restore Windows user files _Array.au3 - Modified array functions that include support for 2D arrays.  -  ColorChooser - An add-on for SciTE that pops up a color dialog so you can select and paste a color code into a script.  -  Customizable Splashscreen GUI w/Progress Bar - Create a custom "splash screen" GUI with a progress bar and custom label.  -  _FileGetProperty - Retrieve the properties of a file  -  SciTE Toolbar - A toolbar demo for use with the SciTE editor  -  GUIRegisterMsg demo - Demo script to show how to use the Windows messages to interact with controls and your GUI.  -   Latin Square password generator

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SlowCoder74

SlowCoder74,

A major disadvantage of OnEvent mode is that you cannot pass parameters to functions - or not without a lot of faffing about. Like BrewmanNH I use both, but I tend to favour MessageLoop unless there is a really good reason to use OnEvent. :)

M23

 Ah, so when is there a "really good reason" to use OnEvent?

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Melba23

BrewmanNH,

 

It didn't used to work that way

It has since I started using AutoIt. ;)

SlowCoder74,

 

when is there a "really good reason" to use OnEvent?

In the main script, as far as I am concerned, practically never - look at the Interrupting a running function tutorial in the Wiki to see one time it might be. But I often run the tray menu in TrayOnEvent mode. :)

M23

  • Like 1

Public_Domain.png.2d871819fcb9957cf44f4514551a2935.png Any of my own code posted anywhere on the forum is available for use by others without any restriction of any kind

Open spoiler to see my UDFs:

Spoiler

ArrayMultiColSort ---- Sort arrays on multiple columns
ChooseFileFolder ---- Single and multiple selections from specified path treeview listing
Date_Time_Convert -- Easily convert date/time formats, including the language used
ExtMsgBox --------- A highly customisable replacement for MsgBox
GUIExtender -------- Extend and retract multiple sections within a GUI
GUIFrame ---------- Subdivide GUIs into many adjustable frames
GUIListViewEx ------- Insert, delete, move, drag, sort, edit and colour ListView items
GUITreeViewEx ------ Check/clear parent and child checkboxes in a TreeView
Marquee ----------- Scrolling tickertape GUIs
NoFocusLines ------- Remove the dotted focus lines from buttons, sliders, radios and checkboxes
Notify ------------- Small notifications on the edge of the display
Scrollbars ----------Automatically sized scrollbars with a single command
StringSize ---------- Automatically size controls to fit text
Toast -------------- Small GUIs which pop out of the notification area

 

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Prime03

BrewmanNH,

 

It has since I started using AutoIt. ;)

SlowCoder74,

 

In the main script, as far as I am concerned, practically never - look at the Interrupting a running function tutorial in the Wiki to see one time it might be. But I often run the tray menu in TrayOnEvent mode. :)

M23

 

:cheer: yay I've been looking for that interrupt documentation for a while, I can finally make a proper GUI end/pause button without using a hotkey or a bunch of flags! 

For whatever reason I tend to use OnEvent always... I think I just like the structure better.

Edited by Prime03

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Melba23

Prime03,

Glad you found that tutorial useful - there are lots of others in the Wiki to discover. :)

M23

  • Like 1

Public_Domain.png.2d871819fcb9957cf44f4514551a2935.png Any of my own code posted anywhere on the forum is available for use by others without any restriction of any kind

Open spoiler to see my UDFs:

Spoiler

ArrayMultiColSort ---- Sort arrays on multiple columns
ChooseFileFolder ---- Single and multiple selections from specified path treeview listing
Date_Time_Convert -- Easily convert date/time formats, including the language used
ExtMsgBox --------- A highly customisable replacement for MsgBox
GUIExtender -------- Extend and retract multiple sections within a GUI
GUIFrame ---------- Subdivide GUIs into many adjustable frames
GUIListViewEx ------- Insert, delete, move, drag, sort, edit and colour ListView items
GUITreeViewEx ------ Check/clear parent and child checkboxes in a TreeView
Marquee ----------- Scrolling tickertape GUIs
NoFocusLines ------- Remove the dotted focus lines from buttons, sliders, radios and checkboxes
Notify ------------- Small notifications on the edge of the display
Scrollbars ----------Automatically sized scrollbars with a single command
StringSize ---------- Automatically size controls to fit text
Toast -------------- Small GUIs which pop out of the notification area

 

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