[RESOLVED] Is there a button pressed/click function?

[pourkascheff]

Hi,
Consider you code in KeyUp and KeyDown events of a specific keyboard button ("Tab" for instance) and wanted to relate it to a button which pressing that key presses it and releasing it releases it.

There is a

Button1.PerformClick()

But I'm not certain how to call/recall/mention those events to let user visually see Button1 be pressed/released corresponded to tab.

[jmcilhinney]

There isn't really a way to do that in the UI with the Button itself, unless you wanted to get into Windows API calls. What you could do is use the ControlPaint class to draw a picture of a depressed Button over the top of the actual Button on KeyDown and then remove it on KeyUp.

[jmcilhinney]

Actually, I'm not sure that you can draw text on the Button using ControlPaint. You might have to use the ButtonRenderer class instead.

[pourkascheff]

Thank you jmcilhinney I glad to have you back number 1 VB code-consultant ever.

Oh, it seems a very tricky meanwhile useless thing then. My final alternative was a simple Label which KeyDown make it border style to 3D, representing a pressed state and in normal condition, it is on fixedsingle or even none. But as an obvious example I can mention Windows On Screen Keyboard utility tool which pressing tab on keyboard make it visually pressed, also pressing it on its form by mouse also performs the same, like you actually pressed physical mechanical tab-key.

[.paul.]

Try this...

Public Class VisualButton
    Inherits Panel

    Public Event Clicked(ByVal sender As Object, ByVal e As EventArgs)
    Private WithEvents tmr As New Timer With {.Interval = 250}
    Private pressed As Boolean = False
    Private sf As New StringFormat With {.Alignment = StringAlignment.Center, .LineAlignment = StringAlignment.Center}

    Public Overrides Property Text() As String
        Get
            Return MyBase.Text
        End Get
        Set(ByVal value As String)
            MyBase.Text = value
            Me.Refresh
        End Set
    End Property

    Public Sub New()
        Me.Size = New Size(75, 23)
        Me.Text = "VisualButton"
    End Sub

    Public Sub PerformClick()
        pressed = True
        tmr.Start()
        Me.Refresh()
        RaiseEvent Clicked(Me, New EventArgs)
    End Sub

    Private Sub VisualButton_MouseClick(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles Me.MouseClick
        pressed = True
        tmr.Start()
        Me.Refresh()
        RaiseEvent Clicked(Me, New EventArgs)
    End Sub

    Private Sub VisualButton_Paint(ByVal sender As Object, ByVal e As System.Windows.Forms.PaintEventArgs) Handles Me.Paint
        ControlPaint.DrawButton(e.Graphics, New Rectangle(0, 0, Me.Width, Me.Height), If(pressed, ButtonState.Pushed, ButtonState.Normal))
        e.Graphics.DrawString(Me.Text, Me.Font, Brushes.Black, New Rectangle(0, 0, Me.Width, Me.Height), sf)
    End Sub

    Private Sub tmr_Tick(ByVal sender As Object, ByVal e As System.EventArgs) Handles tmr.Tick
        tmr.Stop()
        pressed = False
        Me.Refresh()
    End Sub
End Class

[pourkascheff]

It is a beautifully done button replacement. Thanks paul.

- For newbies: Copy-paste it in a class and build once. It will be added to toolbox.
- Its worst flaw is the fact releasing the mouse performs pressing. So I still stick to plan B (Panel or label with sunken 3D border (instead of raised)).