by Tim Fischer (2 Submissions)
Category: Files/File Controls/Input/Output
Compatability: Visual Basic 3.0
Difficulty: Unknown Difficulty
Date Added: Wed 3rd February 2021
Rating: 
(39 Votes)
Program opens text file for input, reads name of files in list, then locks those
files. Uses form and module, also shows system tray icon.
Assumes
Code is NOT FINAL, must be customized to needs.
Have picture box as picture1 hidden and the picture be your system tray icon.
Have timer as timer1 and set interval for time to be shown.
IMPORTANT SYSTEM TRAY!!! Have a picture box as picHook and visible = false.
API DeclarationsOption Explicit
'System tray stuff
Type NOTIFYICONDATA
cbSize As Long
hwnd As Long
uID As Long
uFlags As Long
uCallbackMessage As Long
hIcon As Long
szTip As String * 64
End Type
Public Const NIM_ADD = 0
Public Const NIM_MODIFY = 1
Public Const NIM_DELETE = 2
Public Const NIF_MESSAGE = 1
Public Const NIF_ICON = 2
Public Const NIF_TIP = 4
Public Const WM_LBUTTONDBLCLK = &H203
Public Const WM_LBUTTONDOWN = &H201
Public Const WM_LBUTTONUP = &H202
Public Const WM_RBUTTONDBLCLK = &H206
Public Const WM_RBUTTONDOWN = &H204
Public Const WM_RBUTTONUP = &H205
Public Const WM_MOUSEMOVE = &H200
Public Const WM_NULL = &H0
Declare Function Shell_NotifyIconA Lib "shell32" _
(ByVal dwMessage As Long, lpData As NOTIFYICONDATA) As Integer
Declare Function PostMessage Lib "user32" _
Alias "PostMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, _
ByVal wParam As Long, ByVal lParam As Long) As Long
VBcodersPrivate Sub Form_Load()
Dim fileLock As String
Open "C:\Text.txt" For Input As #1 ' This is the file that it will read from.
Do While Not EOF(1) ' Loop until end of file.
Line Input #1, fileLock 'Each line of the file is the path name
FileNumber = FreeFile() 'Findout next available file number
Open fileLock For Binary Shared As #FileNumber
Lock #FileNumber 'Lock file
Loop
Close #1
'System tray stuff
Dim nd As NOTIFYICONDATA
Dim lRet As Long
With nd
.cbSize = Len(nd)
.hwnd = picHook.hwnd
.uID = 1&
.szTip = "Lock on" & Chr(0)
.uCallbackMessage = WM_MOUSEMOVE
.hIcon = Picture1.Picture 'Icon for system tray
.uFlags = NIF_MESSAGE Or NIF_ICON Or NIF_TIP
End With
lRet = Shell_NotifyIconA(NIM_ADD, nd)
'Error check here
'lRet = PostMessage(mnuPophwnd, WM_NULL, 0&, 0&) 'hrmf
End Sub
Private Sub Form_Unload(Cancel As Integer)
Dim nd As NOTIFYICONDATA
Dim iRet As Integer
With nd
.cbSize = Len(nd)
.hwnd = picHook.hwnd
.uID = 1&
End With
iRet = Shell_NotifyIconA(NIM_DELETE, nd)
If FreeFile() <> 1 Then 'Remove files from memory
For X = 1 To FreeFile() - 1
Close #X
Next
End If
End Sub
Private Sub Timer1_Timer() 'Puts form in background
frmSplash.Hide
Timer1.Enabled = False
End Sub
Private Sub picHook_MouseMove(Button As Integer, Shift As Integer, _
X As Single, Y As Single)
Static bRunning As Boolean
Dim lMsg As Long
lMsg = X / Screen.TwipsPerPixelX
If Not (bRunning) Then 'avoid cascades
bRunning = True
Select Case lMsg
Case WM_LBUTTONDBLCLK:
If InputBox("Please enter Password:", "Lock") = "password" Then Unload Me 'Password check
Case WM_LBUTTONDOWN:
Case WM_LBUTTONUP:
Case WM_RBUTTONDBLCLK:
Case WM_RBUTTONDOWN:
End Select
bRunning = False
End If
End Sub