Event Handler - Revision history

Q at 14:55, 20 July 2021

2021-07-20T14:55:36Z

← Older revision		Revision as of 14:55, 20 July 2021
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	The '''Event Handler''' design pattern provides a powerful and efficient architecture for handling user interaction with LabVIEW. Use the event handler for detecting when events occur such as a user changing the value of a control, moving or clicking the mouse, or pressing a key, etc. The standard event handler template consists of an [[Functions Palette/Programming/Structures/Event Structure\|Event structure]] contained in a [[Functions Palette/Programming/Structures/While Loop\|While Loop]]. Configure the Event structure to have one case for each category of event you want to detect. Each event case contains the handling code that executes immediately after an event occurs.		The '''Event Handler''' [[Design Patterns\|design pattern]] provides a powerful and efficient architecture for handling user interaction with LabVIEW. Use the event handler for detecting when events occur such as a user changing the value of a control, moving or clicking the mouse, or pressing a key, etc. The standard event handler template consists of an [[Functions Palette/Programming/Structures/Event Structure\|Event structure]] contained in a [[Functions Palette/Programming/Structures/While Loop\|While Loop]]. Configure the Event structure to have one case for each category of event you want to detect. Each event case contains the handling code that executes immediately after an event occurs.

Q: Combined information from design pattern page

2020-06-03T16:50:48Z

Combined information from design pattern page

← Older revision		Revision as of 16:50, 3 June 2020
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	The '''Event Handler''' design pattern provides a powerful and efficient architecture for handling user interaction with LabVIEW. Use the event handler for detecting when events occur such as a user changing the value of a control, moving or clicking the mouse, or pressing a key, etc. The standard event handler template consists of an Event structure contained in a While Loop. Configure the Event structure to have one case for each category of event you want to detect. Each event case contains the handling code that executes immediately after an event occurs.		The '''Event Handler''' design pattern provides a powerful and efficient architecture for handling user interaction with LabVIEW. Use the event handler for detecting when events occur such as a user changing the value of a control, moving or clicking the mouse, or pressing a key, etc. The standard event handler template consists of an [[Functions Palette/Programming/Structures/Event Structure\|Event structure]] contained in a [[Functions Palette/Programming/Structures/While Loop\|While Loop]]. Configure the Event structure to have one case for each category of event you want to detect. Each event case contains the handling code that executes immediately after an event occurs.


	[[File:Event Handler Design Pattern.png\|centre\|frameless\|491x491px\|Event Handler Design Pattern]]		[[File:Event Handler Design Pattern.png\|centre\|frameless\|491x491px\|Event Handler Design Pattern]]

Q: Category reorg

2020-06-03T16:31:33Z

Category reorg

← Older revision		Revision as of 16:31, 3 June 2020
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	The Event Handle is suited for use in simple dialog boxes where there might be some input like a message presented to the user, the user makes a selection, and then the users' choice is the output. From '''File -> New...''', then listed in the "From Template\Frameworks" folder there exists a template for making simple dialog boxes with OK and Cancel selections.		The Event Handle is suited for use in simple dialog boxes where there might be some input like a message presented to the user, the user makes a selection, and then the users' choice is the output. From '''File -> New...''', then listed in the "From Template\Frameworks" folder there exists a template for making simple dialog boxes with OK and Cancel selections.

	[[Category:Design ~~patterns~~]]		[[Category:Basic Design Patterns]]
			[[Category:LabVIEW fundamentals]]

MichaelAivaliotis: resized image

2019-01-11T08:31:11Z

resized image

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	=== Dialog Boxes ===		=== Dialog Boxes ===
	[[File:New Dialog - Dialog Using Events.png\|thumb\|~~165x165px~~\|Creating New from Templates in the LabVIEW IDE]]		[[File:New Dialog - Dialog Using Events.png\|thumb\|600x600px\|Creating New from Templates in the LabVIEW IDE]]

	The Event Handle is suited for use in simple dialog boxes where there might be some input like a message presented to the user, the user makes a selection, and then the users' choice is the output. From '''File -> New...''', then listed in the "From Template\Frameworks" folder there exists a template for making simple dialog boxes with OK and Cancel selections.		The Event Handle is suited for use in simple dialog boxes where there might be some input like a message presented to the user, the user makes a selection, and then the users' choice is the output. From '''File -> New...''', then listed in the "From Template\Frameworks" folder there exists a template for making simple dialog boxes with OK and Cancel selections.

	[[Category:Design patterns]]		[[Category:Design patterns]]

Q at 02:54, 11 November 2018

2018-11-11T02:54:23Z

← Older revision		Revision as of 02:54, 11 November 2018
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	The '''Event Handler''' design pattern provides a powerful and efficient architecture for handling user interaction with LabVIEW. Use the event handler for detecting when events occur such as a user changing the value of a control, moving or clicking the mouse, or pressing a key, etc. The standard event handler template consists of an Event structure contained in a While Loop. Configure the Event structure to have one case for each category of event you want to detect. Each event case contains the handling code that executes immediately after an event occurs.		The '''Event Handler''' design pattern provides a powerful and efficient architecture for handling user interaction with LabVIEW. Use the event handler for detecting when events occur such as a user changing the value of a control, moving or clicking the mouse, or pressing a key, etc. The standard event handler template consists of an Event structure contained in a While Loop. Configure the Event structure to have one case for each category of event you want to detect. Each event case contains the handling code that executes immediately after an event occurs.
	[[File:Event Handler Design Pattern.png\|centre\|~~thumb~~\|491x491px\|Event Handler Design Pattern]]		[[File:Event Handler Design Pattern.png\|centre\|frameless\|491x491px\|Event Handler Design Pattern]]

	== Use Cases ==		== Use Cases ==

Q: Added content from the FANDOM site.

2018-11-11T02:11:41Z

Added content from the FANDOM site.

New page

The '''Event Handler''' design pattern provides a powerful and efficient architecture for handling user interaction with LabVIEW. Use the event handler for detecting when events occur such as a user changing the value of a control, moving or clicking the mouse, or pressing a key, etc. The standard event handler template consists of an Event structure contained in a While Loop. Configure the Event structure to have one case for each category of event you want to detect. Each event case contains the handling code that executes immediately after an event occurs.
[[File:Event Handler Design Pattern.png|centre|thumb|491x491px|Event Handler Design Pattern]]

== Use Cases ==

=== Dialog Boxes ===
[[File:New Dialog - Dialog Using Events.png|thumb|165x165px|Creating New from Templates in the LabVIEW IDE]]
The Event Handle is suited for use in simple dialog boxes where there might be some input like a message presented to the user, the user makes a selection, and then the users' choice is the output. From '''File -> New...''', then listed in the "From Template\Frameworks" folder there exists a template for making simple dialog boxes with OK and Cancel selections.

[[Category:Design patterns]]