I want to change text font using font dialog in vb.net - winforms

Question

Here is my code and I am able to add the text by defining some font properties but I want to add this using Font dialog.Can anyone help me regarding this issue.
Public Class Form1
Dim pic_font As New Font("Arial Black", 40, FontStyle.Regular, GraphicsUnit.Pixel)
Dim bm As Bitmap = New Bitmap(100, 100)
Dim strText As String = "Diver Dude"
Dim szText As New SizeF
Dim ptText As New Point(125, 125)
Dim ptsText() As PointF
Dim MovingOffset As PointF
Dim ptsTextPen As Pen = New Pen(Color.LightSteelBlue, 1)
Dim MouseMoving As Boolean
Dim MouseOver As Boolean
Public Sub New()
MyBase.New()
'This call is required by the Windows Form Designer.
InitializeComponent()
'Add any initialization after the InitializeComponent() call
Me.SetStyle(ControlStyles.AllPaintingInWmPaint, True)
Me.SetStyle(ControlStyles.DoubleBuffer, True)
End Sub
Private Sub Form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
PictureBox1.Hide()
bm = Image.FromFile(Application.StartupPath & "\DivePic.bmp")
szText = Me.CreateGraphics.MeasureString(strText, pic_font)
SetptsText()
ptsTextPen.DashStyle = DashStyle.Dot
End Sub
Private Sub Form1_MouseDown(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles Me.MouseDown
'Check if the pointer is over the Text
If IsMouseOverText(e.X - 10, e.Y - 10) Then
MouseMoving = True
'Determine the upper left corner point from where the mouse was clicked
MovingOffset.X = e.X - ptText.X
MovingOffset.Y = e.Y - ptText.Y
Else
MouseMoving = False
End If
End Sub
Private Sub Form1_MouseMove(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles Me.MouseMove
'Check if the pointer is over the Text
If IsMouseOverText(e.X - 10, e.Y - 10) Then
If Not MouseOver Then
MouseOver = True
Me.Refresh()
End If
Else
If MouseOver Then
MouseOver = False
Me.Refresh()
End If
End If
If e.Button = Windows.Forms.MouseButtons.Left And MouseMoving Then
ptText.X = CInt(e.X - MovingOffset.X)
ptText.Y = CInt(e.Y - MovingOffset.Y)
Me.Refresh()
End If
End Sub
Private Sub Form1_MouseUp(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles Me.MouseUp
MouseMoving = False
Me.Refresh()
End Sub
Public Function IsMouseOverText(ByVal X As Integer, ByVal Y As Integer) As Boolean
'Make a Graphics Path from the rotated ptsText.
Using gp As New GraphicsPath()
gp.AddPolygon(ptsText)
'Convert to Region.
Using TextRegion As New Region(gp)
'Is the point inside the region.
Return TextRegion.IsVisible(X, Y)
End Using
End Using
End Function
Dim tbm As Bitmap
Private Sub Form1_Paint(ByVal sender As Object, _
ByVal e As System.Windows.Forms.PaintEventArgs) _
Handles MyBase.Paint
tbm = CType(bm.Clone, Bitmap)
Dim g As Graphics = Graphics.FromImage(tbm)
Dim mx As Matrix = New Matrix
Dim gpathText As New GraphicsPath
Dim br As SolidBrush = New SolidBrush(Color.FromArgb(tbarTrans.Value, _
KryptonColorButton1.SelectedColor))
SetptsText()
'Smooth the Text
g.SmoothingMode = SmoothingMode.AntiAlias
'Make the GraphicsPath for the Text
Dim emsize As Single = Me.CreateGraphics.DpiY * pic_font.SizeInPoints / 72
gpathText.AddString(strText, pic_font.FontFamily, CInt(pic_font.Style), _
emsize, New RectangleF(ptText.X, ptText.Y, szText.Width, szText.Height), _
StringFormat.GenericDefault)
'Draw a copy of the image to the Graphics Object canvas
g.DrawImage(CType(bm.Clone, Bitmap), 0, 0)
'Rotate the Matrix at the center point
mx.RotateAt(tbarRotate.Value, _
New Point(ptText.X + (szText.Width / 2), ptText.Y + (szText.Height / 2)))
'Get the points for the rotated text bounds
mx.TransformPoints(ptsText)
'Transform the Graphics Object with the Matrix
g.Transform = mx
'Draw the Rotated Text
If chkAddOutline.Checked Then
Using pn As Pen = New Pen(Color.FromArgb(tbarTrans.Value, KryptonColorButton2.SelectedColor), 1)
g.DrawPath(pn, gpathText)
End Using
Else
g.FillPath(br, gpathText)
End If
If CheckBox2.Checked = True Then
Dim p As New Pen(Color.FromArgb(tbarTrans.Value, KryptonColorButton2.SelectedColor), 1)
'draw te hollow outlined text
g.DrawPath(p, gpathText)
'clear the path
gpathText.Reset()
Else
g.FillPath(br, gpathText)
End If
'Draw the box if the mouse is over the Text
If MouseOver Then
g.ResetTransform()
g.DrawPolygon(ptsTextPen, ptsText)
End If
'Draw the whole thing to the form
e.Graphics.DrawImage(tbm, 10, 10)
'tbm.Dispose()
g.Dispose()
mx.Dispose()
br.Dispose()
gpathText.Dispose()
End Sub
Private Sub TrackBar_Scroll(ByVal sender As System.Object, ByVal e As System.EventArgs) _
Handles tbarRotate.Scroll, tbarTrans.Scroll
lblRotate.Text = tbarRotate.Value
lblOpacity.Text = tbarTrans.Value
Me.Refresh()
End Sub
Sub SetptsText()
'Create a point array of the Text Rectangle
ptsText = New PointF() { _
ptText, _
New Point(CInt(ptText.X + szText.Width), ptText.Y), _
New Point(CInt(ptText.X + szText.Width), CInt(ptText.Y + szText.Height)), _
New Point(ptText.X, CInt(ptText.Y + szText.Height)) _
}
End Sub
Private Sub chkAddOutline_CheckedChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles chkAddOutline.CheckedChanged
Me.Refresh()
End Sub
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
If FontDialog1.ShowDialog = Windows.Forms.DialogResult.OK Then
End If
End Sub
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
If OpenFileDialog1.ShowDialog = Windows.Forms.DialogResult.OK Then
PictureBox1.Image = Image.FromFile(OpenFileDialog1.FileName)
bm = Image.FromFile(OpenFileDialog1.FileName)
szText = Me.CreateGraphics.MeasureString(strText, pic_font)
SetptsText()
ptsTextPen.DashStyle = DashStyle.Dot
End If
End Sub
Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click
If SaveFileDialog1.ShowDialog = Windows.Forms.DialogResult.OK Then
tbm.Save(SaveFileDialog1.FileName)
End If
End Sub
End Class

Answer 1

What do you mean.If you mean open a font dialog and select a font from it,here is the code.
' You need Import System.Drawing before your class
' In your class vars section
Dim fd As New FontDialog
'later in your code
' This should be in the code where you call the font dialog
If(fd.ShowDialog() == DialogResults.Ok)
pic_font = fd.Font
End If