Re: Shortcut key for an Application ONLY? - C# Discussion Boards

4-Sep-07 22:21

Hello sir/s, im pj.. how can i assign a shortcut key on a certain button, instead of putting an Ampersand ("&") besides the text of the button.. For exampe.. instead of pressing ALT + (the access key) for a button.. i would like only a single key.. like "ENTER" key to be associated with a certain button.. please Give me a sample code or any directions.. Thank you so much..

Giorgi Dalakishvili4-Sep-07 22:28

4-Sep-07 22:28

Trap the key you are interested in and invoke the event handler for the button or menu item

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pdoy07084-Sep-07 22:34

4-Sep-07 22:34

Sir, Thank you so much for replying on my message. Can you give me a sample code? I'm really having a hard time figuring out the event handlers, because i tried putting up some codes on the "KeyPress" event, but i only ended up having more errors. Thank you again sir.

Giorgi Dalakishvili4-Sep-07 22:44

4-Sep-07 22:44

What errors are you getting? You can check it like this:

<br />
private void Form1_KeyPress(object sender, KeyPressEventArgs e)<br />
       {<br />
           if (e.KeyChar == (char)Keys.A)<br />
           {<br />
             //A was pressed<br />
           }<br />
<br />
           if (e.KeyChar == (char)Keys.B)<br />
           {<br />
             //B was pressed<br />
           }<br />
       }<br />

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pdoy07084-Sep-07 23:20

4-Sep-07 23:20

Yes sir.. but i did it this way.. i was trying to designate the Keypress Event of a Button.. For example.. [Logout] Button..
if ( (e.KeyChar).ToString() == Keys.Escape)
{
if (MessageBox.Show("Do you wish to exit?", "Exit", MessageBoxButtons.YesNo) == DialogResult.No)
return;
this.Close();

}

But its not working..

Giorgi Dalakishvili4-Sep-07 23:36

4-Sep-07 23:36

1. If you want to quit your application when escape button is pressed then set form's cancelbutton property will help you.

2. You can test it like this:

<br />
 if (e.KeyChar == (char)Keys.Escape)<br />
                MessageBox.Show("escape was pressed");<br />

It works in the same way for Enter key too

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pdoy07084-Sep-07 22:59

4-Sep-07 22:59

Thank you so much sir.. I was trying to associate the "ENTER" and "/" key for the Event of a Button's Click.. But i could not make it work.. this is the error..
"Error 1 Operator '==' cannot be applied to operands of type 'char' and 'System.Windows.Forms.Keys' ".. I believe that the "Enter" Key is a windows forms key.. how can i CAST it to be something else..

Giorgi Dalakishvili4-Sep-07 23:11

4-Sep-07 23:11

Did you cast it to char as I showed in the example?

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pdoy07084-Sep-07 23:53

4-Sep-07 23:53

Thank you so much for that sir.. It works.. Sir, how can i can assign a hotkey to a Button?.. Ahm, for example.. I want a Button_Click event to be associated with a shortcut key.. Instead of me Pressing the Button itself, i just have to press a key from the keyboard.. like; Pressing the F2 key to be associated with
the Event of a Click of a Button.. Im really sorry for this sir.. I ask a lot of questions. I'm just new to C#, and I'm only a student.

Giorgi Dalakishvili4-Sep-07 23:59

4-Sep-07 23:59

if (e.KeyChar == (char)Keys.F2)
Button_Click(null,EventArgs.Empty)

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pdoy07085-Sep-07 0:26

5-Sep-07 0:26

Sir, i appreciate it so much.. Thank you very much for all the help that you have lend me.. Thank you so much sir..

Giorgi Dalakishvili5-Sep-07 0:28

5-Sep-07 0:28

You are welcome Smile | :)

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pdoy07085-Sep-07 0:24

Re: how to assign a Shortcut key for an Application ONLY in C#?

5-Sep-07 0:24

Sir, thank you so much for all the help that you lend me.. Smile | :)

.. until next time sir..

Luc Pattyn5-Sep-07 0:09

Luc Pattyn

5-Sep-07 0:09

Hi,

for printable characters (letters, digits, punctuation) you should use the KeyPress event;
its event arg provides a KeyChar property which is a char, so don't compare it to
(char)Keys.A instead compare it to 'a' or 'A'.

special characters (escape, enter, ...) don't fire the KeyPress event; you should use
the KeyDown (possibly KeyUp) event for these; its event arg provides a KeyCode property
which is a Keys, so that one you can compare to Keys.Escape and others.

Smile | :)

Luc Pattyn [Forum Guidelines] [My Articles]

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Re: how to assign a Shortcut key for an Application ONLY in C#?

Dan Neely5-Sep-07 5:45

Dan Neely

5-Sep-07 5:45

For the specific cases of Enter and Escape there's an easier solution. The AcceptButton and CancelButton properties of the form can be given an event handler as a value (the buttons click handler).

--
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disabling hotkeys

tahir_makhdoom4-Sep-07 22:04

tahir_makhdoom

4-Sep-07 22:04

disable hotkeys ctrl, alt,del,win through c# and then enable code

tahir

Re: disabling hotkeys

Giorgi Dalakishvili4-Sep-07 22:14

can i use a Forum which is developed in 1.1 Framework.

4-Sep-07 22:14

I've already replied to your first post which is the same as this one. It is rude to ask the same question twice. I have given a direction to explore, if you are lazy no one will do the work for you

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Re: disabling hotkeys

Vasudevan Deepak Kumar4-Sep-07 22:23

Vasudevan Deepak Kumar

4-Sep-07 22:23

The veteran poster had also tried to start up this elite discussion thread in a rated PG non-programming forum (aka) Lounge. Smile | :)

Vasudevan Deepak Kumar
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Re: disabling hotkeys

Sathesh Sakthivel5-Sep-07 0:02

Sathesh Sakthivel

5-Sep-07 0:02

Don't Cross Post and repost.

SSK.

Kumar Arun4-Sep-07 22:02

Kumar Arun

4-Sep-07 22:02

I have a project developed in 2.0 Framework, can i use a Forum which is developed in 1.1 Framework.

Please suggest is there any problem to integrate the forum.

Thanks in advance
Arun Kr.

Arun Kr

Re: can i use a Forum which is developed in 1.1 Framework.

Dave Kreskowiak5-Sep-07 5:57

Dave Kreskowiak

5-Sep-07 5:57

Kumar Arun wrote:
I have a project developed in 2.0 Framework, can i use a Forum which is developed in 1.1 Framework.

Can you use source code from a .NET 1.1 project? Sure. Most of the .NET 2.0 BCL is backwards compatible, but there are breaking changes.

Can you use a .NET 1.1 compiled assembly in your .NET 2.0 project?? Most likely not, but only if the .NET 1.1 assembly MUST use the .NET 1.1 CLR. If this is the case, then no, you can't use the assembly because you cannot load two different versions of the .NET CLR into the same process.

If the .NET 1.1 assembly will work fine running under the .NET 2.0 CLR, then yes, you can use it.

But, like I said, there ARE breaking changes between .NET 1.1 and .NET 2.0 and above.

A guide to posting questions on CodeProject[^]

Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007

startmenu programs

tahir_makhdoom4-Sep-07 21:58

tahir_makhdoom

4-Sep-07 21:58

i want to get start menu programs in a listbox of my application

tahir

Re: startmenu programs

Giorgi Dalakishvili4-Sep-07 22:12