Kasus 1

You can create an audio player that enables you to play midi and wave files in your hard drives or DVDROM. It allows you to change drives and search for the particular sound file that you wish to play.

In this program, you have to add a Combo box, a List Box, a Text Box, a Drive List Box and three command buttons. Change the label of  one of the buttons to "PLAY", another command button to "STOP", and the last command button to "EXIT". Besides, you need to add the MMControl and make it invisible.

The code

Sub Combo1_Change( )

if ListIndex=0 Then File1.Pattern=("*.wav") ElseIf ListIndex=1 Then File1.Pattern=("*.mid") Else File1.Pattern=("*.*) End If End Sub

If Right(File1.Path,1) <>"\" Then  filenam=File1.Path +"\"+File1.Filename

Else filenam=File1.Path+File1.Filename

End If

Text1.Text=filenam

End Sub

Private Sub Play_Click( )

If Combo1.ListIndex=0 Then MMControl1.DeviceType="WaveAudio" ElseIf Combo1.ListIndex=1 Then MMControll.DeviceType="Sequencer" End If

MMControl1.FileName=Text1.Text MMControl1.Command="Open" MMControl1.Command="Play"

End Sub

Private Sub Stop_Click( )

If MMControl1.Mode=524 Then Exit Sub If MMControl1.Mode<>525 Then MMControl1.Wait=True MMControl1.Command="Close"

End Sub

Private Sub Dir1_Change( )

File1.Path=Dir1.Path If Combo1.ListIndex=0 Then File1.Pattern=("*.wav") ElseIf Combo1.ListIndex=1 Then File1.Pattern=("*.mid") Else File1.Pattern=("*.*) End If

Private Sub Drive1.Change( )

Dir1.Path=Drive1.Drive End Sub

Private Sub Form_Load( )

Top=(Screen.Height-Height)\2 Left=(Screen.Width-Width)\2 Combo1.Text="*.wav" Combo1.AddItem "*.wav" Combo1.AddItem "*.mid" Combo1.AddItem "All files"

End  Sub

KASUS 2

This is a multimedia player that can play all kinds of media files such as wav, midi, mp3, mpeg video, avi video and so on. When you launch the program, you can select files of different types from different drives. After you have selected a particular file, you can play it using the customized button or you can use the buttons of the multimedia control

In this program, you need to insert the Microsoft Multimedia Control, a combo box, a dirListBox, a DriveListBox, a fileListbox, a picture box(to play the media files) , a text box and four command buttons which you label as "Play", "Open","Stop" and "Exit".

The combo box is to allow the user to select different media files from his or her hard drive or from other sources. The code is:

Private Sub Combo1_Change()

If ListIndex = 0 ThenFile1.Pattern = ("*.wav")ElseIf ListIndex = 1 ThenFile1.Pattern = ("*.mid")ElseIf ListIndex = 2 ThenFile1.Pattern = ("*.avi")ElseIf ListIndex = 3 ThenFile1.Pattern = ("*.mpeg;*.mpg;*.mp3")ElseFiel1.Pattern = ("*.*")End If

End Sub

The procedure to allow  the user to search for a particular media file in a certain folder is as follow:

Private Sub File1_Click()

If Combo1.ListIndex = 0 ThenFile1.Pattern = ("*.wav")ElseIf Combo1.ListIndex = 1 ThenFile1.Pattern = ("*.mid")ElseIf Combo1.ListIndex = 2 ThenFile1.Pattern = ("*.avi")ElseIf Combo1.ListIndex = 3 ThenFile1.Pattern = ("*.mpeg;*.mpg;*.mp3")ElseFile1.Pattern = ("*.*")End If

If Right(File1.Path, 1) <> "\" Thenfilenam = File1.Path + "\" + File1.FileNameElsefilenam = File1.Path + File1.FileName

End IfText1.Text = filenam

End Sub

The procedure to open the selected media file is as follow:

Private Sub Open_Click()If Combo1.ListIndex = 0 ThenMMControl1.DeviceType = "WaveAudio"End IfIf Combo1.ListIndex = 1 ThenMMControl1.DeviceType = "Sequencer"End If

If Combo1.ListIndex = 2 ThenMMControl1.DeviceType = "AVIVideo"End IfIf Combo1.ListIndex = 3 ThenMMControl1.DeviceType = ""

End If

The Interface

The code

Private Sub Form_Load()Left = (Screen.Width - Width) \ 2Top = (Screen.Height - Height) \ 2'To offer the user selection of media filesCombo1.Text = "*.wav"Combo1.AddItem "*.wav"Combo1.AddItem "*.mid"Combo1.AddItem "*.avi"Combo1.AddItem "*.mpeg;*.mpg;*.mp3"Combo1.AddItem "All files"End Sub

Private Sub Combo1_Change()'To allow the user to select a particular media file typeIf ListIndex = 0 ThenFile1.Pattern = ("*.wav")

ElseIf ListIndex = 1 ThenFile1.Pattern = ("*.mid")ElseIf ListIndex = 2 ThenFile1.Pattern = ("*.avi")ElseIf ListIndex = 3 ThenFile1.Pattern = ("*.mpeg;*.mpg;*.mp3")ElseFiel1.Pattern = ("*.*")End If

End Sub

Private Sub Dir1_Change()File1.Path = Dir1.PathIf Combo1.ListIndex = 0 ThenFile1.Pattern = ("*.wav")ElseIf Combo1.ListIndex = 1 ThenFile1.Pattern = ("*.mid")ElseIf Combo1.ListIndex = 2 ThenFile1.Pattern = ("*.avi")ElseIf Combo1.ListIndex = 3 ThenFile1.Pattern = ("*.mpeg;*.mpg;*.mp3")ElseFile1.Pattern = ("*.*")End IfEnd Sub

Private Sub Drive1_Change()Dir1.Path = Drive1.DriveEnd Sub

Private Sub File1_Click()'Allows the user to select a particular media fileIf Combo1.ListIndex = 0 ThenFile1.Pattern = ("*.wav")ElseIf Combo1.ListIndex = 1 ThenFile1.Pattern = ("*.mid")ElseIf Combo1.ListIndex = 2 ThenFile1.Pattern = ("*.avi")ElseIf Combo1.ListIndex = 3 ThenFile1.Pattern = ("*.mpeg;*.mpg;*.mp3")ElseFile1.Pattern = ("*.*")End If

If Right(File1.Path, 1) <> "\" Thenfilenam = File1.Path + "\" + File1.FileNameElsefilenam = File1.Path + File1.FileNameEnd IfText1.Text = filenam

End Sub

Private Sub Open_Click()If Combo1.ListIndex = 0 ThenMMControl1.DeviceType = "WaveAudio"End IfIf Combo1.ListIndex = 1 ThenMMControl1.DeviceType = "Sequencer"End If

If Combo1.ListIndex = 2 ThenMMControl1.DeviceType = "AVIVideo"End IfIf Combo1.ListIndex = 3 ThenMMControl1.DeviceType = ""

End If

MMControl1.FileName = Text1.TextMMControl1.Command = "Open"End Sub

Private Sub play_Click()Timer1.Enabled = TrueMMControl1.Command = "Play"MMControl1.hWndDisplay = Picture1.hWndEnd Sub

Private Sub Stop_Click()If MMControl1.Mode = 524 Then Exit SubIf MMControl1.Mode <> 525 ThenMMControl1.Wait = TrueMMControl1.Command = "Stop"End IfMMControl1.Wait = True

MMControl1.Command = "Close"End Sub

Kasus 3

We can create a simple virtual drawing program using Visual Basic 6 as shown in the figure below. We called it drawing pad.

In this program, the user needs to fill in all the coordinates and selects a color before proceeding to draw the required shape. If the user forgets to fill in the coordinates or selects a color, he or she will be prompted to do so.

To create the drawing pad, you need to insert a common dialog control, a picture box, four text boxes , six command buttons and the necessary labels. The function of the common dialog control is to assist the users to choose colors. The text boxes are for the user to enter the coordinates and the picture box is to display the pictures drawn.

The syntax to draw a straight line is Line, and the syntax is as follows:

Picture1.Line (x1, y1)-(x2, y2), color

where  picture1 is the picture box, (x1,y1) is the coordinates of the starting point, (x2, y2) is the ending point and color understandably is the color of the line.

The syntax to draw a non-solid rectangle is

Picture1.Line (x1, y1)-(x2, y2), color, B

The syntax to draw a solid rectangle is

Picture1.Line (x1, y1)-(x2, y2), color, BF

The syntax to draw a circle is

Picture1.Circle (x3, y3), r, color

Where (x3, y3) is the center of the circle and r is the radius.

if you wish to draw a solid circle and fill it with the selected color, then add two more lines to the above syntax:

Picture1.FillStyle = vbSolidPicture1.FillColor = color

The syntax to clear the picture is

Picture1.Cls

The Interface

The code

Private Sub cmd_Rectangle_Click()x1 = Text1.Texty1 = Text2.Textx2 = Text3.Texty2 = Text4.TextPicture1.Line (x1, y1)-(x2, y2), color, BEnd Sub

Private Sub cmd_Color_Click()CommonDialog1.Flags = &H1&CommonDialog1.ShowColorcolor = CommonDialog1.color

End Sub

Private Sub cmd_Circle_Click()On Error GoTo addvaluesx3 = Text5.Texty3 = Text6.Textr = Text7.Text

Picture1.FillStyle = vbSolidPicture1.FillColor = colorPicture1.Circle (x3, y3), r, color

Exit Sub

addvalues:MsgBox ("Please fill in the coordinates ,the radius and the color")

End Sub

Private Sub Command5_Click()Picture1.ClsEnd Sub

Private Sub cmd_SolidRect_Click()x1 = Text1.Texty1 = Text2.Textx2 = Text3.Texty2 = Text4.TextPicture1.Line (x1, y1)-(x2, y2), color, BFEnd Sub

Kasus 4

This is a program that enables the user to search for an image file in his or her computer and view it in a picture box. There are two ways to implement the program. The first is to build the program from the ground up and the second makes use of the common dialog box.

The first way is a little more complicated but you can learn a great deal of programming techniques. To create this program, you need to insert a a drive list box(DriveListBox) , a directory list box (DirListBox), a file list box(FileListBox) and a combo box . The drive list box is for the user to select a drive, the directory list box is for the user to choose a folder and the file list box is display the files in the selected folder. Besides that, the combo box allows the user to select all graphics files or all files. You also need to insert a picture box to display the image.

The Interface

The code

Private Sub Combo1_Change()'To list all graphics files or all filesIf ListIndex = 0 ThenFile1.Pattern = ("*.bmp;*.wmf;*.jpg;*.gif")ElseFiel1.Pattern = ("*.*")End IfEnd Sub

Private Sub Dir1_Change()'To choose driveFile1.Path = Dir1.PathFile1.Pattern = ("*.bmp;*.wmf;*.jpg;*.gif")End Sub

Private Sub Drive1_Change()Dir1.Path = Drive1.DriveEnd Sub

　

　

　

　

　

　

　

Private Sub File1_Click()'To select a fileIf Combo1.ListIndex = 0 ThenFile1.Pattern = ("*.bmp;*.wmf;*.jpg;*.gif")ElseFile1.Pattern = ("*.*")End If

If Right(File1.Path, 1) <> "\" Thenfilenam = File1.Path + "\" + File1.FileNameElsefilenam = File1.Path + File1.FileNameEnd IfEnd Sub

Private Sub show_Click()'To show the selected graphics fileIf Right(File1.Path, 1) <> "\" Thenfilenam = File1.Path + "\" + File1.FileNameElsefilenam = File1.Path + File1.FileNameEnd IfPicture1.Picture = LoadPicture(filenam)End Sub

The second way is much easier to program, you need to insert an image control, a common dialog box  and an icon that resembles on opened file. You need to set the stretchable property of the image control to true.  The procedure to open the common dialog box to browse the image files as well as to load the selected picture into the image control is

CommonDialog1.Filter = "Bitmaps(*.BMP)|*.BMP|Metafiles(*.WMF)|*.WMF|Jpeg Files(*.jpg)|*.jpg|GIF Files(*.gif)|*.gif|Icon Files(*.ico)|*.ico|All Files(*.*)|*.*"

CommonDialog1.ShowOpen

Picture1.Picture = LoadPicture(CommonDialog1.FileName)

The filter property of the common dialog box uses the format as shown below

Bitmaps(*.BMP)|*.BMP

to specify the file type, and uses the pipe line | to separate different file types.

Visual Basic supports most of the picture formats namely bmp, wmf, jpg, gif, ico(icon) and cur(cursor) files.

The command  CommonDialog1.ShowOpen is to open the common dialog box and the command.

 Picture1.Picture = LoadPicture (CommonDialog1.FileName)

is to load the selected picture file into the picture box.

 The whole program is shown below and the output is shown in the figure below:

 Private Sub Image1_Click()

CommonDialog1.Filter = "Bitmaps(*.BMP)|*.BMP|Metafiles(*.WMF)|*.WMF|Jpeg Files(*.jpg)|*.jpg|GIF Files(*.gif)|*.gif|Icon Files(*.ico)|*.ico|All Files(*.*)|*.*"

CommonDialog1.ShowOpen

image2.Picture = LoadPicture (CommonDialog1.FileName)

End Sub

When the user clicks the opened file icon, the following dialog will appear. The user then can select the file he or she wish to view.

The Interface

Kasus 5

Why build apps for SharePoint 2013? BI: Business Intelligence in Share ... Presented 3 talks at C# Corner Ann ...

Blog

Using TreeView to Display Records from MDB File in VB.NET 2010By Mostafa Kaisoun on Jan 26, 2015

In this blog you will learn how to use TreeView to Display Records from MDB File in VB.NET 2010.

1109 1 0

facebook twitter

linkedIn google Plus

oooooooo

expand

This is a trial to read records from MDB database file using TreeView control. My project is a phone index to display some fields from Customers table in Northwind database file:

CompanyName, ContactName, Address, City, Country and Phone.

My project has one form (frmPhone), this form has following controls:

TreeView: tvData Four TextBoxes

txtCompany for Company Name, txtAddress for Address, txtCity for City and , txtCountry for Country.

Two Buttons: For load data and exit application.

Code

There is five procedures:

1. Private Sub LoadCustomerData() 2. ' for open the database file 3. MyDataFile = Application.StartupPath & "\DataFile\Northwind.mdb" 4. Dim MyCon As String = "provider=microsoft.jet.oledb.4.0;Password="""";data source=" & M

yDataFile 5. datCon = New OleDbConnection() 6. datCon.ConnectionString = MyCon 7. Dim cmdSelect As OleDbCommand = New OleDbCommand() 8. Dim datAdp As OleDbDataAdapter = New OleDbDataAdapter() 9. datSet = New DataSet() 10. Try 11. MyTable = "Customers" 12. ' Select all fields 13. Dim strSql As String = "SELECT * FROM " + MyTable + " ORDER BY ContactName" 14. cmdSelect.CommandText = strSql 15. cmdSelect.CommandType = CommandType.Text 16. datCon.Open() ' open connection 17. cmdSelect.Connection = datCon 18. datAdp.SelectCommand = cmdSelect 19. datAdp.Fill(datSet, MyTable) ' fill dataset 20. datCon.Close() 21. ' if no records then exit: 22. Dim RecCount As Integer = Me.BindingContext(datSet, MyTable).Count 23. If RecCount = 0 Then 24. MessageBox.Show("No records in Customer table file!") 25. Exit Sub 26. End If 27. Catch ex As Exception 28. MessageBox.Show(ex.ToString()) 29. End Try 30. SetRootNode() 31. End Sub 32. 33. Private Sub SetRootNode() 34. ' set root node of TreeView: 35. tvData.Nodes.Add("Phone Index") 36. tvData.Nodes(0).Tag = "RootDB" 37. tvData.Nodes(0).ImageIndex = 0 38. tvData.Nodes(0).SelectedImageIndex = 0 39. ' Set Contact Name 40. SetContactName() 41. 'Set Customer Phone

42. SetCustPhone() 43. End Sub 44. 45. Private Sub SetContactName() 46. 'set ContactName field as node 47. itmNumber = datSet.Tables(MyTable).Rows.Count 48. For i As Integer = 0 To itmNumber - 1 49. tvData.Nodes(0).Nodes.Add(datSet.Tables(MyTable).Rows(i).ItemArray(2).ToString()) 50. tvData.Nodes(0).Nodes(i).Tag = "Name" 51. tvData.Nodes(0).Nodes(i).ImageIndex = 2 52. tvData.Nodes(0).Nodes(i).SelectedImageIndex = 2 53. Next 54. End Sub 55. 56. Private Sub SetCustPhone() 57. 'set Phone field as node 58. For i As Integer = 0 To itmNumber - 1 59. tvData.Nodes(0).Nodes(i).Nodes.Add(datSet.Tables(MyTable).Rows(i).ItemArray(9).ToString()) 60. tvData.Nodes(0).Nodes(i).Nodes(0).Tag = "Phone" 61. tvData.Nodes(0).Nodes(i).Nodes(0).ImageIndex = 4 62. tvData.Nodes(0).Nodes(i).Nodes(0).SelectedImageIndex = 4 63. Next 64. End Sub 65. 66. Private Sub DisplayRecord(ByVal EmployeeName As String) 67. ' Show some data about customer: 68. Try 69. ' using DataView to find record: 70. Dim dv As DataView = New DataView(datSet.Tables(MyTable)) 71. dv.Sort = "ContactName" 72. Dim i As Integer = dv.Find(EmployeeName) 73. Me.BindingContext(datSet, MyTable).Position = i 74. txtCompany.Text = datSet.Tables(MyTable).Rows(i).ItemArray(1).ToString() 75. txtAddress.Text = datSet.Tables(MyTable).Rows(i).ItemArray(4).ToString() 76. txtCity.Text = datSet.Tables(MyTable).Rows(i).ItemArray(5).ToString() 77. txtCountry.Text = datSet.Tables(MyTable).Rows(i).ItemArray(8).ToString() 78. Catch ex As Exception 79. MessageBox.Show(ex.ToString()) 80. End Try 81. End Sub

Kasus 6

Convert Date From Solar (Gregorian) to Lunar (Hijri) Using VB.NET

Introduction

The Lunar (Hijri) calendar is very important for Muslims as is the Solar (Gregorian) calendar is important because the Lunar calendar was related to some elements of worship, so I looked at many sites on the internet to understand how to calculate the age of the moon in any given day, I found many sites offering various ways and I took what I found to provide results closer to the truth.

I've noticed that most sites agree on the expense of the Julian date but don't agree on how to calculate the age of the moon and found the difference between these sites to be up to one day and when the moon's age is 30 days, the result is zero in some sites.

In this program I calculate the approximate age of the moon in days and did not give attention to the parts of the day of the hours and minutes.

For the program to be more useful, I added a PictureBox control to display the lighted part of the moon and darkness part of the moon commensurate with the age of the moon.

There is a small probability of a one-day error for any calculation to convert a date.

Note: You can read Months by its name or by its number.

Code

Best Calculation to Get Number Approximation

1. Private Function getInt(ByRef fNumber As Double) As Double 2. If fNumber < -0.0000001 Then 3. getInt = Math.Ceiling(fNumber - 0.0000001) 4. Else 5. getInt = Math.Floor(fNumber + 0.0000001) 6. End If 7. End Function

Convert Solar (Gregorian) Date to Lunar (Hijri) Date

1. Private Sub SolarToLunar() 2. ' convert Solar year from 622 to 2500 3. Dim jd As Double

4. Dim j, L, n As Double 5. Dim d, m, y As Integer 6. Dim theDay As Integer 7. ' Solar day 8. d = Val(SolarDay.Text) 9. 'get the number of Solar month 10. m = SolarMonth.SelectedIndex + 1 11. ' Solar year 12. y = Val(SolarYear.Text) 13. If (y > 1582) Or ((y = 1582) And (m > 10)) Or ((y = 1582) And (m = 10) And (d > 14)) Then 14. jd = getInt((1461 * (y + 4800 + getInt((m - 14) / 12))) / 4) + getInt((367 * (m - 2 - 12 * (getI

nt((m - 14) / 12)))) / 12) - getInt((3 * (getInt((y + 4900 + getInt((m - 14) / 12)) / 100))) / 4) + d - 32075

15. Else 16. jd = 367 * y - getInt((7 * (y + 5001 + getInt((m - 9) / 7))) / 4) + getInt((275 * m) / 9) + d + 17

29777 17. End If 18. ' Solar year >= 622 19. If jd < 1948440 Then 20. DateMinError() 21. Exit Sub 22. End If 23. ' Solar year <= 2500 24. If jd > 2621734 Then 25. DateMaxError() 26. Exit Sub 27. End If 28. 'day of the week 29. theDay = jd Mod 7 30. lblDay.Text = WeekDays(theDay) 31. L = jd - 1948440 + 10632 32. n = getInt((L - 1) / 10631) 33. L = L - 10631 * n + 354 34. j = (getInt((10985 - L) / 5316)) * (getInt((50 * L) / 17719)) + (getInt(L / 5670)) * (getInt((43 *

L) / 15238)) 35. L = L - (getInt((30 - j) / 15)) * (getInt((17719 * j) / 50)) - (getInt(j / 16)) * (getInt((15238 * j) /

43)) + 29 36. m = Int(getInt((24 * L) / 709)) 37. d = Int(L - getInt((709 * m) / 24)) 38. y = Int(30 * n + j - 30) 39. ' display Lunar date 40. LunarDay.Text = Str(d) 41. LunarMonth.Text = LunarMonths(m - 1) 42. LunarYear.Text = Str(y) 43. ShowMoonPhase() 44. If d = 1 Then 45. lblAge.Text = Str(d) & " day" 46. Else

47. lblAge.Text = Str(d) & " days" 48. End If 49. End Sub

Convert Lunar (Hijri) Date to Solar (Gregorian) Date

1. Private Sub LunarToSolar() 2. ' convert Lunar year from 1 to 1900 3. Dim jd As Double 4. Dim i, j, k, L, n As Double 5. Dim d, m, y As Integer 6. Dim theDay As Integer 7. ' Lunar day 8. d = Val(LunarDay.Text) 9. If d = 1 Then 10. lblAge.Text = Str(d) & " day" 11. Else 12. lblAge.Text = Str(d) & " days" 13. End If 14. 'get the number of Lunar month 15. m = LunarMonth.SelectedIndex + 1 16. ' Lunar year 17. y = Val(LunarYear.Text) 18. jd = getInt((11 * y + 3) / 30) + 354 * y + 30 * m - getInt((m - 1) / 2) + d + 1948440 - 385 19. 'day of the week 20. theDay = jd Mod 7 21. lblDay.Text = WeekDays(theDay) 22. If jd > 2299160 Then 23. L = jd + 68569 24. n = getInt((4 * L) / 146097) 25. L = L - getInt((146097 * n + 3) / 4) 26. i = getInt((4000 * (L + 1)) / 1461001) 27. L = L - getInt((1461 * i) / 4) + 31 28. j = getInt((80 * L) / 2447) 29. d = Int(L - getInt((2447 * j) / 80)) 30. L = getInt(j / 11) 31. m = Int(j + 2 - 12 * L) 32. y = Int(100 * (n - 49) + i + L) 33. Else 34. j = jd + 1402 35. k = getInt((j - 1) / 1461) 36. L = j - 1461 * k 37. n = getInt((L - 1) / 365) - getInt(L / 1461) 38. i = L - 365 * n + 30 39. j = getInt((80 * i) / 2447) 40. d = Int(i - getInt((2447 * j) / 80)) 41. i = getInt(j / 11) 42. m = Int(j + 2 - 12 * i)

43. y = Int(4 * k + n + i - 4716) 44. End If 45. ' display Solar date 46. SolarDay.Text = Str(d) 47. SolarMonth.Text = SolarMonths(m - 1) 48. SolarYear.Text = Str(y) 49. ShowMoonPhase() 50. End Sub

Draw the Moon at Selected Date

1. Private Sub ShowMoonPhase() 2. Dim ag As Integer = Val(LunarDay.Text) 3. Dim Phase As Double = ag / 29.530588853 4. Dim Xpos, Ypos, Rpos As Integer 5. Dim Xpos1, Xpos2 As Integer 6. Me.ClearDraw() 'clear PicMoon PictureBox 7. ' Width of 'ImageToDraw' Object = Width of 'PicMoon' control 8. Dim PageWidth As Integer = Me.MoonShape.Width 9. ' Height of 'ImageToDraw' Object = Height of 'PicMoon' control 10. Dim PageHeight As Integer = Me.MoonShape.Height 11. ' Initiate 'ImageToDraw' Object with size = size of control 'PicMoon' control 12. Dim ImageToDraw As Bitmap = New Bitmap(PageWidth, PageHeight) 13. 'Create graphics object for alteration. 14. Dim newGraphics As Graphics = Graphics.FromImage(ImageToDraw) 15. Dim PenW As Pen = New Pen(Color.White) ' For lighted part of the moon 16. Dim PenB As Pen = New Pen(Color.Black) ' For darkness part of the moon 17. For Ypos = 0 To 45 18. Xpos = Int(Math.Sqrt(45 * 45 - Ypos * Ypos)) 19. ' Draw darkness part of the moon 20. Dim pB1 As Point = New Point(90 - Xpos, Ypos + 90) 21. Dim pB2 As Point = New Point(Xpos + 90, Ypos + 90) 22. Dim pB3 As Point = New Point(90 - Xpos, 90 - Ypos) 23. Dim pB4 As Point = New Point(Xpos + 90, 90 - Ypos) 24. newGraphics.DrawLine(PenW, pB1, pB2) 25. newGraphics.DrawLine(PenW, pB3, pB4) 26. ' Determine the edges of the lighted part of the moon 27. Rpos = 2 * Xpos 28. If (Phase < 0.5) Then 29. Xpos1 = -Xpos 30. Xpos2 = Int(Rpos - 2 * Phase * Rpos - Xpos) 31. Else 32. Xpos1 = Xpos 33. Xpos2 = Int(Xpos - 2 * Phase * Rpos + Rpos) 34. End If 35. ' Draw the lighted part of the moon 36. Dim pW1 As Point = New Point(Xpos1 + 90, 90 - Ypos) 37. Dim pW2 As Point = New Point(Xpos2 + 90, 90 - Ypos)

38. Dim pW3 As Point = New Point(Xpos1 + 90, Ypos + 90) 39. Dim pW4 As Point = New Point(Xpos2 + 90, Ypos + 90) 40. newGraphics.DrawLine(PenB, pW1, pW2) 41. newGraphics.DrawLine(PenB, pW3, pW4) 42. Next 43. ' Display the bitmap in the picture box. 44. Me.MoonShape.Image = ImageToDraw 45. ' Release graphics object 46. PenW.Dispose() 47. PenB.Dispose() 48. newGraphics.Dispose() 49. ImageToDraw = Nothing 50. End Sub