Problems with the KeyPress, KeyDown and KeyUp events in C#

Question

So how to begin. I am asking when you make a game for example and you add a controlls how do I make the form's key events run when the focus isnt on the form but on some of the controlls and when i call this.Focus() or this.Select() it doesnt't happen anything, but if I use a empty form(with no controls) it works(the events respond).And when i have for example 2 buttons and call button1.focus() and press a key the button1's event handler responds (only it) adn then when i call button2.Focus() it responds for button2.How is focus distributed througt the controlls? I know for muttons you have to click them once to put the focus on them automaticly and for textboxtes too,but when i click the form it doesnt move the focus on the form.

Im have almost no experience with Key events please explayn me how to use them and how they function understandly.

PS: sorry for the long questin

Consider splitting your questions. That makes it easier to answer. — J. Steen
– J. Steen, Commented Aug 16, 2011 at 11:53
My general quetion is how they function and how to use them (the events) — Bosak
– Bosak, Commented Aug 16, 2011 at 12:00
Yes, I know. My recommendation still stands, because they are two separate questions that just happen to touch the same concepts. =) — J. Steen
– J. Steen, Commented Aug 16, 2011 at 12:01

Bojan Dević · Accepted Answer · 2011-08-16 12:03:55Z

2

You can set the Form.KeyPreview to true to have the form react to key events.

answered Aug 16, 2011 at 12:03

Bojan Dević

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4 Comments

Bosak Over a year ago

So when I set that to true and the focus is on a button or something else the form will call its event handler? And if the focus is on a button will the button call its key event handler too?

Bojan Dević Over a year ago

If KeyPreview is true the form first reacts to event, you still need to implement KeyDown for form or similar event.

Bosak Over a year ago

So if i implemeted form's keyDown event and keyPreview is true and i have a buton and the focus is on that button and the button also has a different from the form's keyDonw event handler, then if i press a key first the form's event handler calls and then the button's(or other control that has focus and has a key event handler)?

Bojan Dević Over a year ago

I used only form keyDown event or control's keyDown and never both. But msdn says it should work. msdn.microsoft.com/en-us/library/…

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