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- VERSION 2.00
- Begin Form frmTest
- BackColor = &H00800000&
- BorderStyle = 1 'Fixed Single
- Caption = "Test AIM"
- ClientHeight = 5580
- ClientLeft = 1065
- ClientTop = 1485
- ClientWidth = 6615
- Height = 5985
- Left = 1005
- LinkTopic = "Form1"
- MaxButton = 0 'False
- ScaleHeight = 5580
- ScaleWidth = 6615
- Top = 1140
- Width = 6735
- Begin TextBox txtDecompressed
- Enabled = 0 'False
- Height = 1095
- Left = 240
- MultiLine = -1 'True
- TabIndex = 2
- Text = "Text1"
- Top = 4200
- Width = 6135
- End
- Begin TextBox txtCompressed
- Enabled = 0 'False
- Height = 1095
- Left = 240
- MultiLine = -1 'True
- TabIndex = 6
- Text = "Text1"
- Top = 2280
- Width = 6135
- End
- Begin CommandButton cmdDecompress
- Enabled = 0 'False
- Height = 375
- Left = 240
- TabIndex = 5
- Top = 3480
- Width = 6135
- End
- Begin CommandButton cmdCompress
- Height = 375
- Left = 240
- TabIndex = 1
- Top = 1560
- Width = 6135
- End
- Begin TextBox txtOriginal
- Height = 1095
- Left = 240
- MultiLine = -1 'True
- ScrollBars = 2 'Vertical
- TabIndex = 0
- Top = 360
- Width = 6135
- End
- Begin Label Label4
- BackStyle = 0 'Transparent
- Caption = "Decompressed buffer:"
- ForeColor = &H00FFFFFF&
- Height = 255
- Left = 240
- TabIndex = 7
- Top = 3960
- Width = 6135
- End
- Begin Label Label2
- BackStyle = 0 'Transparent
- Caption = "Compressed buffer:"
- ForeColor = &H00FFFFFF&
- Height = 255
- Left = 240
- TabIndex = 4
- Top = 2040
- Width = 6135
- End
- Begin Label Label1
- BackStyle = 0 'Transparent
- Caption = "Original buffer:"
- ForeColor = &H00FFFFFF&
- Height = 255
- Left = 240
- TabIndex = 3
- Top = 120
- Width = 4215
- End
- ' testaim.frm
- ' Visual Basic v3 testbed for aim16.dll
- Option Explicit
- ' save the size of the original string (so we can
- ' allocate the correct sized buffer)
- Dim g_lOriginalSize As Long
- ' save the compressed string
- Dim g_cCompressed As String
- ' save the compressed size
- Dim g_cCompressedSize As Long
- Sub cmdCompress_Click ()
- Dim cOriginal As String ' original string
- Dim cBuffer As String ' buffer for compressed string
- Dim lOriginal As Long ' length of the original string
- Dim lBuffer As Long ' length of the compression buffer
- Dim lCompressedSize ' length of the compressed string (or an error)
- ' set length of original string
- lOriginal = Len(txtOriginal.Text)
- ' get the original string
- cOriginal = txtOriginal.Text
- label1.Caption = "Original buffer: " & Format$(lOriginal) & " characters"
- 'set length of compressed buffer (which should be larger
- ' than the original buffer by 1% + 12 bytes)
- lBuffer = 12 + (lOriginal * 101) / 100
- ' allocate empty compression buffer
- cBuffer = Space(lBuffer)
- ' call compression function
- lCompressedSize = addZIP_InMemory(cOriginal, lOriginal, cBuffer, lBuffer)
- If (lCompressedSize < 0) Then ' an error has occured
- txtCompressed.Text = "COMPRESSION FAILED!! Error code " & Format$(lCompressedSize)
- Exit Sub
- End If
- ' if we get to here then no error has occurred
- '
- ' save the original size for later decompression
- g_lOriginalSize = lOriginal
- g_cCompressed = Left$(cBuffer, lCompressedSize)
- g_cCompressedSize = lCompressedSize
- ' enable the decompression button
- cmdDecompress.Enabled = True
- ' display the compressed string
- txtCompressed.Text = Left$(cBuffer, lCompressedSize)
- ' display the size of the compressed string
- label2.Caption = "Compressed buffer: " & Format$(lCompressedSize) & " characters"
- End Sub
- Sub cmdDecompress_Click ()
- Dim cOriginal As String ' original string
- Dim cBuffer As String ' buffer for compressed string
- Dim lOriginal As Long ' length of the original string
- Dim lBuffer As Long ' length of the compression buffer
- Dim lCompressedSize ' length of the compressed string (or an error)
- ' set length of original string (with extra space
- ' which shouldnt be required)
- lOriginal = g_lOriginalSize + 10
- ' allocate the empty string for the original
- cOriginal = Space$(lOriginal)
- ' set length of the compressed string from global
- lBuffer = g_cCompressedSize
- ' set compressed string from global
- cBuffer = g_cCompressed
- ' call decompression function
- lOriginal = addUNZIP_InMemory(cOriginal, lOriginal, cBuffer, lBuffer)
- ' check for errors
- If (lOriginal < 0) Then ' an error has occured
- txtDecompressed.Text = "DECOMPRESSION FAILED!! Error code " & Format$(lCompressedSize)
- Exit Sub
- End If
- ' if we get to here, no error occurred
- '
- ' display decompressed string
- txtDecompressed.Text = Left$(cOriginal, lOriginal)
- label4.Caption = "Decompressed buffer: " & Format$(lOriginal) & " characters"
- End Sub
- Sub Form_Load ()
- txtOriginal.Text = "Type some text here and press the button below to compress it. "
- txtOriginal.Text = txtOriginal.Text & Chr$(13) & Chr$(10) & txtOriginal.Text
- txtOriginal.Text = txtOriginal.Text & Chr$(13) & Chr$(10) & txtOriginal.Text
- cmdCompress.Caption = "Press me to compress"
- txtCompressed.Text = "The compressed string will be placed here"
- cmdDecompress.Caption = "Press me to decompress"
- ' centre me on the screen
- Move screen.Width / 2 - Me.Width / 2, screen.Height / 2 - Me.Height / 2
- End Sub
-