Cause Paint Event To Fire From Click Event

Question

Frederick2 189 Posting Whiz

12 Years Ago

How can I cause the Paint event to fire from a Form_Click() event? This is what I'm trying to do...

Public Class StrTests01
    Private Sub StrTests01_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Click
        Dim ps As Graphics = Me.CreateGraphics()
        'RaiseEvent StrTests01_Paint(sender, ps)
    End Sub
    Private Sub StrTests01_Paint(ByVal sender As Object, ByVal pea As System.Windows.Forms.PaintEventArgs) Handles Me.Paint
        pea.Graphics.DrawString("Hello, World!", Me.Font, New SolidBrush(SystemColors.WindowText), 0, 0)
    End Sub
End Class

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Latest Post 12 Years Ago Latest Post by Frederick2

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Frederick2 189 Posting Whiz · Answer 1 · 2012-01-24T01:25:15+00:00

I'm still struggling. Can't anyone help with this simple question? Here's what I have so far, but nothing's working...

Public Class StrTests01
    Private Sub StrTests01_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Click
        Dim ps As Graphics = Me.CreateGraphics()
        'RaiseEvent StrTests01_Paint(sender, ps)
        'RaiseEvent OnPaint(sender, ps)
        StrTests01_Paint(sender, ps)
    End Sub
    Private Sub StrTests01_Paint(ByVal sender As Object, ByVal pea As System.Windows.Forms.PaintEventArgs) Handles Me.Paint
        pea.Graphics.DrawString("Hello, World!", Me.Font, New SolidBrush(SystemColors.WindowText), 0, 0)
    End Sub
End Class

Frederick2 189 Posting Whiz · Answer 2 · 2012-01-24T01:38:52+00:00

No need to reply. I just figured it out!

Public Class StrTests01
    Dim s1 As New String("")
    Private Sub StrTests01_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Click
        s1 = "Here Is A String I Want To Draw!"
        Me.Invalidate()
    End Sub
    Private Sub StrTests01_Paint(ByVal sender As Object, ByVal pea As System.Windows.Forms.PaintEventArgs) Handles Me.Paint
        If s1.Length = 0 Then
            pea.Graphics.DrawString("Hello, World!", Me.Font, New SolidBrush(SystemColors.WindowText), 0, 0)
        Else
            pea.Graphics.DrawString(s1, Me.Font, New SolidBrush(SystemColors.WindowText), 0, 0)
        End If
    End Sub
End Class