how to disable esc key in a form? - vb.net

i have a flyout as a login form, but whenever i presses the esc key the flyout will exit and i dont want that kind of thing so is there anyway to trap that esc key thingy in flyouts ? i did test this stuff but not of them works.
Private Sub ItemAdd_FormClosed(sender As Object, e As FormClosedEventArgs) Handles Me.FormClosed
If login = True Then
MsgBox("haha")
End If
End Sub
Private Sub ItemAdd_FormClosing(sender As Object, e As FormClosingEventArgs) Handles Me.FormClosing
If login = True Then
MsgBox("haha")
End If
End Sub
Private Sub ItemAdd_KeyDown(sender As Object, e As KeyEventArgs) Handles Me.KeyDown
If e.KeyCode = Keys.Space Then
MsgBox("haha")
End If
End Sub
OR HOW CAN I DISABLE THE ESC KEY in a FORM ?

I haven't tried this myself, but you give it a try:
Private Sub ItemAdd_KeyDown(sender As Object, e As KeyEventArgs) Handles Me.KeyDown
If e.KeyCode = Keys.Escape Then
e.Handled = True
End If
End Sub

Related

Key Press to Close Form VB.net

So I've been working on this project to autorun on my flash drive, whenever it gets plugged it. It just displays my contact info and a little message, so I can get it returned.
Because I want people to actually read the message, the close button is disabled. You have to check a little box, and then hit the "OK" button.
Of course, I don't want to do this whenever I plug in my own flash drive. I'm trying to make a keyboard shortcut to close it automatically. I saw this post here but it didn't work for me. Here's the code from that post:
Private Sub Form1_KeyDown(sender As Object, e As KeyEventArgs) Handles MyBase.KeyDown
If e.Alt AndAlso e.KeyCode = Keys.X Then
Application.Exit()
End If
End Sub
Any help is very appreciated. Thanks!
Also, if you think my code is sloppy and want to clean it up, here it is.
Public Class Form1
Private Sub Form1_FormClosing(ByVal sender As Object, ByVal e As System.Windows.Forms.FormClosingEventArgs) Handles Me.FormClosing
e.Cancel = True
End Sub
Private Sub Button1_Click(sender As Object, e As EventArgs) Handles ButtonOK.Click
End
End Sub
Private Sub CheckBox1_CheckedChanged(sender As Object, e As EventArgs) Handles CheckBox1.CheckedChanged
If CheckBox1.Checked = True Then
ButtonOK.Enabled = True
Else
ButtonOK.Enabled = False
End If
End Sub
Private Sub Label1_Click(sender As Object, e As EventArgs) Handles Label1.Click
End Sub
Private Sub Form1_KeyDown(sender As Object, e As KeyEventArgs) Handles MyBase.KeyDown
If e.Alt AndAlso e.KeyCode = Keys.X Then
End
End If
End Sub
End Class
Firstly, NEVER EVER use End. That is just plain bad under any circumstances.
What you should be doing is testing the Checked value of your CheckBox in the FormClosing event handler and cancelling if and only if it's not checked. Logically, you should then check the CheckBox and call Close on the form when you detect that desired key combination.
Actually, I'd probably not call Close either, but rather call PerformClick on the Button. That way, the key combination is guaranteed to do exactly the same thing as clicking the Button.
Private Sub Button1_Click(sender As Object, e As EventArgs) Handles ButtonOK.Click
Close()
End Sub
Private Sub CheckBox1_CheckedChanged(sender As Object, e As EventArgs) Handles CheckBox1.CheckedChanged
ButtonOK.Enabled = CheckBox1.Checked
End Sub
Private Sub Form1_KeyDown(sender As Object, e As KeyEventArgs) Handles MyBase.KeyDown
If e.Alt AndAlso e.KeyCode = Keys.X Then
CheckBox1.Checked = True
ButtonOK.PerformClick()
End If
End Sub
Private Sub Form1_FormClosing(ByVal sender As Object, ByVal e As System.Windows.Forms.FormClosingEventArgs) Handles Me.FormClosing
e.Cancel = Not CheckBox1.Checked
End Sub

How to suppress sound when opening a dialogform in vb.net

I have a form with a textbox, when pressing enter another form2 is opened.
How can I suppress sound when form2 is opened?
Private Sub TextBox1_KeyDown(sender As Object, e As KeyEventArgs) Handles TextBox1.KeyDown
If e.KeyCode = Keys.Enter Then
e.Handled = True
e.SuppressKeyPress = True
My.Forms.Form2.ShowDialog()
End If
End Sub
You could do this by changing the code slightly and moving it into the KeyPress event instead of KeyDown
Private Sub TextBox1_KeyPress(sender As Object, e As KeyPressEventArgs) Handles TextBox1.KeyKeyPress
If e.KeyChar = ChrW(Keys.Enter) Then
e.Handled = True
My.Forms.Form2.ShowDialog()
End If
End Sub

How to make keypress (keydown) close program

I'm currently writing code for a project in VB.NET where if you hit the "escape" button you get a messagebox saying "This exits the program, would you like to leave? 'Y' or 'N'". What code would I write to make it so that if you hit "Y" the program closes?
This is what I have so far:
Private Sub Form1_KeyDown(sender As Object, e As KeyEventArgs) Handles Me.KeyDown
If e.KeyCode = Keys.Escape Then
MsgBox("This button exits the program. Do you want to exit the program?")
If Button = e.KeyCode = Keys.Y Then
End
End If
End If
End Sub
This will give you what you are after:
Private Sub Form1_KeyDown(sender As Object, e As KeyEventArgs) Handles Me.KeyDown
If e.KeyCode = Keys.Escape Then
If MessageBox.Show("message", "caption", MessageBoxButtons.YesNo) = Windows.Forms.DialogResult.Yes Then
Close()
End If
End If
End Sub
Screenshot showing how it looks when I press the Esc button:
Private Sub Form1_KeyDown(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles MyBase.KeyDown
Select Case e.KeyCode
Case Keys.Escape
Msgbox("Close",vbInformation)
Me.Close()
End Select
End Sub
Hope This Helps as a guide.
Try This One
Private Sub Form1_KeyDown(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles MyBase.KeyDown
If e.KeyCode = Keys.Escape Then
Dim ask As MsgBoxResult
ask = MsgBox("Close Program ?", MsgBoxStyle.YesNo, "Exit")
If ask = MsgBoxResult.Yes Then
Me.Close()
End If
End If
End Sub

Disabling Alt+F4 function in key down event

How to prevent form being closed by alt+f4 keys in keydown event? problem i am facing is keeping ALT key pressed and pressing F4 closes form but i want to prevent form from closing. Below is my code
Private Sub frminstituteselect_KeyDown(sender As Object, e As KeyEventArgs) Handles Me.KeyDown
If e.Alt = True And e.KeyCode = Keys.F4 Then
e.Handled = True
End If
End Sub
Try like this
Private ALT_F4 As Boolean = False
Private Sub frminstituteselect_FormClosing(sender As Object, e As System.Windows.Forms.FormClosingEventArgs) Handles Form1.FormClosing
If ALT_F4 Then
e.Cancel = True
Return
End If
End Sub
Private Sub frminstituteselect_KeyDown(sender As Object, e As System.Windows.Forms.KeyEventArgs) Handles Form1.KeyDown
ALT_F4 = (e.KeyCode.Equals(Keys.F4) AndAlso e.Alt = True)
End Sub
or simply
Private Sub frminstituteselect_FormClosing(sender As Object, e As System.Windows.Forms.FormClosingEventArgs) Handles Form1.FormClosing
e.Cancel = True
End Sub

VB.Net detect keydown on control before keydown on form event

I have enabled the KeyPreview option on the form and on the keydown of the form I am detecting the Escape keydown to popup a msgbox requesting whether the user wants to exit from the application.
But the problem is, I have one textbox that needs to clear its contents on Escape keypress rather than asking whether the user needs to exit. And I tried using the keydown event on this control but the form keydown event occurs before the control keydown (I want this to happen the other way around).
Code on the Textbox
Private Sub txtAmount(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles txtAmount.KeyDown
If e.KeyCode = Keys.Escape Then
'//Escape keypress
MsgBox("TEXTBOX ESCAPE")
sender.Text = ""
End If
End Sub
Code used on the Main menu Form
Private Sub frmMainMenu_KeyDown(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles Me.KeyDown
If e.KeyCode = Keys.Escape Then Application.Exit()
End Sub
I can't use the previewkeydown either because the MaskTextBox doesn't raise the previewkeydown event..
Check if txtAmount is focused in the Form_KeyDown:
Private Sub txtAmount_KeyDown(sender As Object, e As System.Windows.Forms.KeyEventArgs) Handles txtAmount.KeyDown
If e.KeyCode = Keys.Escape Then
'//Escape keypress
MsgBox("TEXTBOX ESCAPE")
sender.Text = ""
End If
End Sub
Private Sub frmMainMenu_KeyDown(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles Me.KeyDown
If txtAmount.Focused Then Return
If e.KeyCode = Keys.Escape Then Application.Exit()
End Sub
Edit: Alternatively, if you don't want to specify each control individually, you could do it by type:
If TypeOf Me.ActiveControl Is MaskTextBox Then Return
Or even more simpler, change your Form_KeyDown-Event to a KeyUp Event.
Public Class frmMainMenu
Private KeyHandled As Boolean
Private Sub txtAmount_KeyDown(sender As Object, e As System.Windows.Forms.KeyEventArgs) Handles txtAmount.KeyDown
If e.KeyCode = Keys.Escape Then
sender.Text = ""
KeyHandled = True
End If
End Sub
Private Sub frmMainMenu_KeyDown(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles Me.KeyDown
KeyHandled = False
End Sub
Private Sub frmMainMenu_KeyUp(sender As Object, e As System.Windows.Forms.KeyEventArgs) Handles Me.KeyUp
If KeyHandled Then Return
If e.KeyCode = Keys.Escape Then Application.Exit()
End Sub
End Class
Here is my code
Private Sub When_KeyDown(ByVal sender As System.Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles TextBox1.KeyDown, MyBase.KeyDown
If sender.name = "Your form name" Then
If e.KeyCode = Keys.Escape And Not TextBox1.Focused Then
MsgBox("me")
End If
ElseIf sender.name = "your textBox name" Then
If e.KeyCode = Keys.Escape Then
MsgBox("txt")
End If
End If
End Sub
I hope this can help you