hi,
i want to ask about keyevent when keypress on form load in a function.
what i want is when i click "F2" then the key of "F12" and a button is enabled=false.
Anyone, please help me..:?:
thank you.
hi,
i want to ask about keyevent when keypress on form load in a function.
what i want is when i click "F2" then the key of "F12" and a button is enabled=false.
Anyone, please help me..:?:
thank you.
Set KeyPreview on your form properties as True
Then Try this :
Private Sub Form1_KeyDown(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles MyBase.KeyDown
If e.KeyCode = Keys.F2 Then
Button1.Enabled = False
End If
End Sub
What is the F12 is doing? Would you please post that piece of code?
I guess what you need is something like:
If ThatButton.Enabled then
‘do the job
End If
thank you..
but for enabled=false the other key such as F12?
How the code?
Public Class Form1
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Me.KeyPreview = True '// keep focus of keys on Form.
End Sub
Private Sub Form1_KeyDown(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles MyBase.KeyDown
If e.KeyCode = Keys.F2 Then If Button1.Enabled = True Then Button1.Enabled = False '// Disable.
If e.KeyCode = Keys.F12 Then If Button1.Enabled = False Then Button1.Enabled = True '// Enable.
End Sub
End Class
thank you.
i mean how to disable the user to press F2 after they press F12?
Private bAllowF2KeyPress As Boolean = True
Private Sub Form1_KeyDown(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles MyBase.KeyDown
If bAllowF2KeyPress = True Then
If e.KeyCode = Keys.F2 Then If Button1.Enabled = True Then Button1.Enabled = False '// Disable.
End If
If e.KeyCode = Keys.F12 Then
If Button1.Enabled = False Then Button1.Enabled = True '// Enable.
bAllowF2KeyPress = False '// set to False to not allow the F2 key to disable Button.
End If
End Sub
I do not understood him until now (I think I do, maybe wrong again.)
He said, “when I click "F2" then the key of "F12" and a button is enabled=false”
My understanding is:
If the user press F2 and then (within 100 ms, for example) press F12 continuously, then disable the button.
Please confirm me, sarifah.
If I were to do it, I need a class scope variable bF2Clicked (Boolean). I may need a timer also.
bF2Clicked = False at Form Load
bF2Clicked = True at Form Load, and timer start.
bF2Clicked = False at timer stop.
Button1.Enable = False if bF2Clicked = True And Key = F12.
We're a friendly, industry-focused community of developers, IT pros, digital marketers, and technology enthusiasts meeting, networking, learning, and sharing knowledge.