1. Copy paste the code to your form.
2. Find the OK.MouseLeave, Cancel.MouseLeave then replace it with the button names of your form you want to glow.
#Region "GLOW CODE"
Private Sub MouseEnterEvent(ByVal sender As Object, ByVal e As System.EventArgs) _
Handles OK.MouseLeave, Cancel.MouseLeave
' A simple event handler that fires when the user's mouse arrow rolls
' over any of the buttons. It passes the button's identity to the Glow sub.
Dim ctrl As Control = CType(sender, Control)
Glow(ctrl, True)
End Sub
Private Sub MouseLeaveEvent(ByVal sender As Object, ByVal e As System.EventArgs) _
Handles OK.MouseLeave, Cancel.MouseLeave
' A simple event handler that fires when the user's mouse arrow leaves the
' area of any of the buttons. It passes the button's identity to the Glow sub.
Dim ctrl As Control = CType(sender, Control)
Glow(ctrl, False)
End Sub
Private Sub Glow(ByVal ctrl As Control, ByVal Hovering As Boolean)
Dim Sb_R, Sb_G, Sb_B As Int16 ' <--- RGB values for the starting backcolor
Dim Sf_R, Sf_G, Sf_B As Int16 ' <--- RGB values for the starting forecolor
Dim Eb_R, Eb_G, Eb_B As Int16 ' <--- RGB values for the ending backcolor
Dim Ef_R, Ef_G, Ef_B As Int16 ' <--- RGB values for the ending forecolor
Select Case Hovering ' True for MouseEnter, False for MouseLeave
Case True
Sb_R = SystemColors.Control.R ' Assign the variables the
Sb_G = SystemColors.Control.G ' appropriate values based
Sb_B = SystemColors.Control.B ' on system-defined colors
' for control and control
Sf_R = SystemColors.ControlText.R ' text.
Sf_G = SystemColors.ControlText.G
Sf_B = SystemColors.ControlText.B
Eb_R = SystemColors.ActiveCaption.R ' Assign the variables the
Eb_G = SystemColors.ActiveCaption.G ' appropriate values based
Eb_B = SystemColors.ActiveCaption.B ' on system-defined colors
' for the title bar and the
Ef_R = SystemColors.ActiveCaptionText.R ' title bar's text.
Ef_G = SystemColors.ActiveCaptionText.G
Ef_B = SystemColors.ActiveCaptionText.B
Case False
Sb_R = SystemColors.ActiveCaption.R ' Assign the variables the
Sb_G = SystemColors.ActiveCaption.G ' appropriate values based
Sb_B = SystemColors.ActiveCaption.B ' on system-defined colors
' for the title bar and the
Sf_R = SystemColors.ActiveCaptionText.R ' title bar's text.
Sf_G = SystemColors.ActiveCaptionText.G
Sf_B = SystemColors.ActiveCaptionText.B
Eb_R = SystemColors.Control.R ' Assign the variables the
Eb_G = SystemColors.Control.G ' appropriate values based
Eb_B = SystemColors.Control.B ' on system-defined colors
' for control and control
Ef_R = SystemColors.ControlText.R ' text.
Ef_G = SystemColors.ControlText.G
Ef_B = SystemColors.ControlText.B
End Select
Dim b_RIncrement As Int16 = Round(((Eb_R - Sb_R) / 16), 0) ' Find the increments that
Dim b_GIncrement As Int16 = Round(((Eb_G - Sb_G) / 16), 0) ' the RGB values will take;
Dim b_BIncrement As Int16 = Round(((Eb_B - Sb_B) / 16), 0) ' 1/16th of the difference
' between the start and end
Dim f_RIncrement As Int16 = Round(((Ef_R - Sf_R) / 16), 0) ' values, rounded to the
Dim f_GIncrement As Int16 = Round(((Ef_G - Sf_G) / 16), 0) ' nearest integer.
Dim f_BIncrement As Int16 = Round(((Ef_B - Sf_B) / 16), 0)
Dim bR As Int16 = Sb_R ' \
Dim bG As Int16 = Sb_G ' }-- the RGB values for the backcolor as it changes.
Dim bB As Int16 = Sb_B ' /
Dim fR As Int16 = Sf_R ' \
Dim fG As Int16 = Sf_G ' }-- the RGB values for the forecolor as it changes.
Dim fB As Int16 = Sf_B ' /
Dim count As Int16
For count = 0 To 14
bR += b_RIncrement ' Add the appropriate increments to the
bG += b_GIncrement ' RGB values. The result is a nifty
bB += b_BIncrement ' "cross-fade" effect.
fR += f_RIncrement
fG += f_GIncrement
fB += f_BIncrement
ctrl.BackColor = Color.FromArgb(bR, bG, bB) ' Repaint the button using the
ctrl.ForeColor = Color.FromArgb(fR, fG, fB) ' current RGB values, and refresh
ctrl.Refresh() ' the button.
Threading.Thread.Sleep(30 - (count * 2)) ' Wait a certain number of milliseconds,
' which is a factor of the current count.
' I tweaked these numbers to get a decent
' effect; feel free to adjust these
' numbers to achieve an effect you like.
Next
Select Case Hovering
Case True
ctrl.BackColor = SystemColors.HighlightText ' Finish the effect by painting
ctrl.ForeColor = SystemColors.Highlight ' the control with it's final
Case False ' look, depending on whether
ctrl.BackColor = SystemColors.Highlight ' we're fading in or out.
ctrl.ForeColor = SystemColors.HighlightText
End Select
End Sub
#End Region
