Lazarus
Programming => General => Topic started by: Tirans on April 13, 2021, 12:11:45 pm
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Hello, i was making a database type project and i wanted to add a feature where you can go to next/prev object using arrowkeys, but the problem is that I have Buttons for that aswell and whenever i launch my code it sets the focus to Button1 and my procedure for FormKeyDown does not work, it just shuffles between the buttons.
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Have you set KeyPreview of the form to True?
Also, you may want to see how Actions work for these. Depending on your design it might be a better solution than using OnKeyDown.
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Oh wow that was an easy Fix, thank you very much. What did you mean by "actions" i did a quick google search couldnt find much info on it.
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Hey Tirans,
Oh wow that was an easy Fix, thank you very much. What did you mean by "actions" i did a quick google search couldnt find much info on it.
On the component palette, Tab Standard, First from the Right: TActionList.
Drop one of those on your form and right-click to access Action Editor.
There are lots of components that accept a TAction on their properties: Property Action, right at the top.
Things like Buttons, Menus, etc.
This helps you with having a single place to have code and then have a menu and a button have the same action.
And you can set: Caption, Font, Hint, ...., Short-Cut, that will then be automatically replaced on the button or menu.
That's how you do to have a menu and a button on a toolbar do the same thing and respond to the same short-cut, like say: Open (Ctrl+O)
Nice hum?
Cheers,
Gus
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What did you mean by "actions" i did a quick google search couldnt find much info on it.
Not much info but see in the wiki: TAction (https://wiki.freepascal.org/TAction).
A handy explanation, though for Delphi: Dr.Bob on Delphi Actions and Action Lists (http://www.drbob42.com/delphi4/actions.htm). Google "Delphi TAction" for more.
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Thanks guys, I will definetly look into this one.