Question

Make system "ding" sound stop when pressing keys in windows forms

Asked by: shawnlehner

I have a windows forms interface for a 3D engine. I use the W,A,S,D keys as movement keys for my free look camera but when pressing these keys I get constant "dings" it is very annoying. Does anyone have a way around this? In the OnKeyDown() event which I use for read the key I have tried setting the e.Handled property to true with no effect.

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Asked On
2008-04-02 at 15:43:30ID23291176
Topics

Microsoft Development

,

.Net Editors & IDEs

,

Microsoft Visual C#.Net

Participating Experts
4
Points
250
Comments
7

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Answers

 

by: jaime_olivaresPosted on 2008-04-02 at 16:30:16ID: 21268503

try to set e.Handled in the KeyPress event.

 

by: shawnlehnerPosted on 2008-04-02 at 16:51:26ID: 21268625

no go.... I have e.Handled set in every possible key event... I think it is going to have to be something beyond this.

 

by: AniproPosted on 2008-05-07 at 02:14:56ID: 21514452

you probably have other elements in the form like button that recive the keybord focus,
set in your Form->KeyPreview Propertie to True

and manage the keybord before other controls take control of it.

try first with a simple form with no control - see if you get the "ding".


 

by: profyaPosted on 2008-05-08 at 07:05:46ID: 21524779

If your are using .NET framework then add this line of code just after your handling:
C#:
e.SuppressKeyPress = true;

VB.NET:
e.SuppressKeyPress = true

 

by: profyaPosted on 2008-05-08 at 07:07:31ID: 21524794

A little thing:
My above code should be controlled with IF statement other wise the entire KeyDown event will be ignored.
For example:
C#:
if (e.Control && e.KeyCode == Keys.S && btnSave.Enabled)
            {
                Save();
                e.SuppressKeyPress = true;
            }

 

by: profyaPosted on 2008-05-08 at 07:58:35ID: 21525313

Another thing:
The above illustration works fine with non-Enter/Return keys, however, the Enter key has special function with text boxes their Multiline property set to true, it adds new line. The only way as I see is to change the property to true and then revert to false. The following code works fine with me, however, it makes the textbox shaking a bit:
C#:
         if ((e.KeyCode == Keys.Enter || e.KeyCode==Keys.Return) && e.Modifiers==Keys.None)
            {
                txtFindWhat.Multiline = true;
                txtFindWhat.Multiline = false;
                btnFind_Click(null, null);
                e.SuppressKeyPress = true;
            }

 

 

by: yaronusaPosted on 2008-08-04 at 07:36:26ID: 22152764

I had the same problem as you and solved it based on the following:

You must do two things:

(1) Create an event that will handle the key press.
(2) Mark the original event (e) as handled (this will prevent the noise)

That's what the code does and it works without the need to change the Multi line property of a text box.

// Here is an example of a OnKeyPress event
// You don't have to override like I did, but 
// you do need an OnKeyPress event related to
// your text box.
 
protected override void OnKeyPress(KeyPressEventArgs e)
        {
            base.OnKeyPress(e);
 
            if ((int)e.KeyChar == (int)Keys.Return)
                if (ReturnPressed != null)
                    ReturnPressed(this, e);
 
            e.Handled = true;
        }
}

                                              
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