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Jigsaw Puzzle

We are sure everybody has played the jigsaw puzzle before, that is to fix the pieces of a picture that were cut into pieces and jumbled up. There are many level of difficulties but eventually you can solve the puzzle. Here we have programmed a simple 3x3 jigsaw puzzle with Visual Basic 6. We programmed it in such a way that you can drag and drop the pieces in the squares that you think are correct. If the piece is correct, it will stay in the correct square otherwise it will not stay there.

The Interface

The Code

To be able to drag and drop an object, we need to use the DragDrop method.

Dim imgindex As Integer
Dim imgtag As String

Private Sub Image1_DragDrop(Index As Integer, Source As Control, X As Single, Y As Single)

imgtag = Source.Tag
imgindex = Index
Select Case imgindex

Case 0
If imgtag = "11" Then
Image1(0).Picture = Image1(9).Picture
Source.Visible = False
Else
Source.Visible = True
End If

Case 1

If imgtag = "12" Then
Image1(1).Picture = Image1(10).Picture
Source.Visible = False
Else
Source.Visible = True
End If

Case 2

If imgtag = 13 Then
Image1(2).Picture = Image1(11).Picture
Source.Visible = False
Else
Source.Visible = True
End If

Case 3
If imgtag = 21 Then
Image1(3).Picture = Image1(12).Picture
Source.Visible = False
Else
Source.Visible = True
End If

Case 4

If imgtag = 22 Then
Image1(4).Picture = Image1(13).Picture
Source.Visible = False
Else
Source.Visible = True
End If

Case 5
If imgtag = 23 Then
Image1(5).Picture = Image1(14).Picture
Source.Visible = False
Else
Source.Visible = True
End If

Case 6
If imgtag = 31 Then
Image1(6).Picture = Image1(15).Picture
Source.Visible = False
Else
Source.Visible = True
End If

Case 7

If imgtag = 32 Then
Image1(7).Picture = Image1(16).Picture
Source.Visible = False
Else
Source.Visible = True
End If

Case 8

If imgtag = 33 Then
Image1(8).Picture = Image1(17).Picture
Source.Visible = False
Else
Source.Visible = True
End If

End Select

End Sub

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