Shortcut keys for invoking a closed form

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Hi,
I am creating a desktop application which invokes a pop up form after a specific time interval.I want to add a functionality that if a shortcut key is pressed the form should pop up...plz help.

Posted 1-Aug-11 18:38pm

AC777

Updated 1-Aug-11 21:01pm

Kim Togo

v3

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BillWoodruff 2-Aug-11 0:46am

Is this for WinForms, or WPF ?

Sergey Alexandrovich Kryukov 2-Aug-11 0:50am

WinForms I guess. In WPF windows are not called "forms".
--SA

AC777 2-Aug-11 1:00am

Its a windows forms app

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BillWoodruff · Answer 1 · 2011-08-01T20:57:00

If you want the Form itself to intercept a shortcut key, before any of the Controls on the Form get the Key Event (Pressed, Down, Up), then: set the the KeyPreview Property of the Form to 'true, and write the appropriate form key-event handler in which, if your choice of key-combinations and modifiers (shift, alt, control) is active, you 'Show your pop-up.

Your question implies a Timer being used; I'm not clear if the Timer is something operating independently of the shortcut-key being received, but you can control the delay between shortcut received and appearance of the pop-up, by using a Timer, if that's what you mean.

Note the distinction between 'closing a Form, or UserControl, which destroys the instance of that Form or UserControl, and 'hiding a Form or UserControl which does not destroy the instance, and allows you to re-use it, via the 'Show method.

My guess is you are describing a scenario where you do want to use 'Hide rather than 'Close: i.e., you do not wish to re-create the pop-up instance (via 'new, or Activator.CreateInstance) every time you need it.