Key Down event doesn't fire while control key is held down

[littlesphaeroid]

It occurs to me that a hybrid between my two approaches can work without invoking any menu functions. I can use the application Key Down event, per avogadro5, and check if any of my registered controls are active, as in my user menu example. Let me try...

[littlesphaeroid]

I've attached a version that does what I wanted to do without invoking any menu functions. Check it out!

[zou]

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@littlesphaeroid wrote:

Zou's example VI does work work (thank you!), but fails if you register for an event for a specific control, which is what I need to do. 

The documentation says:

Generated on a control that has keyboard focus. If a key press matches a keyboard shortcut in the VI menu, such as Ctrl-C or Ctrl-V, LabVIEW does not generate a Key Down event, regardless of whether the menu item is enabled.

I don't see how this behavior is consistent with the application Key Down event Zou shows, but here we are.

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I don't know what you mean.  I can't open your VI as I'm using LabVIEW 2018.

I'm not using key down event.  I'm using the Menu Selection instead.

This method works great if you only need to catch a few key combinations.  May not be the best solution if you want to catch all the key down events.

But you have to use a customized menu anyway in order to use the key down event for Ctrl+A, C, V...

As I mentioned in my first reply, the menu bar doesn't have to be visible.  Works ok if menu bar is hidden.

[avogadro5]

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@littlesphaeroid wrote:

I've attached a version that does what I wanted to do without invoking any menu functions. Check it out!

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There's also a "FocusObj" with the event data:

[littlesphaeroid]

Sorry zou, I meant to say that avagaro5's example VI works.

I have found a solution that uses events and does not need to mess with menus. The issue with the menu-based solution is that sometimes you actually want to show and use manus, and the menu method is not pretty enough in that case, unless you hide them in a submenu somewhere.

I'm attaching my solutions in LV 2018 here.

[littlesphaeroid]

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@avogadro5 wrote:

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@littlesphaeroid wrote:

I've attached a version that does what I wanted to do without invoking any menu functions. Check it out!

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There's also a "FocusObj" with the event data:

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This is very interesting, and I didn't know what that was before. Thank you!

This would be great for allowing the select all shortcut to be applied to all strings. I can see how this could be extended to other data types as well.

[littlesphaeroid]

There are many ways to skin a cat. I've attached a new version that includes an implementation that works for all strings on the FP. 

[littlesphaeroid]

I have requested ctrl-a be implemented in all text LabVIEW fields in the idea exchange. Go vote for it!

https://forums.ni.com/t5/LabVIEW-Idea-Exchange/Make-text-entry-in-all-controls-and-indicators-respon...