The attached program demonstrates how to create a console and write to/read from it. Also demonstrated is how to get/set properties such as the window title.
When compiled, Visual Basic 5/6 applications that use a console, are considered to be GUI applications and are treated as such. To solve this use the linker as follows: path of Visual Basic\Link.exe /EDIT /SUBSYSTEM:CONSOLE executable
The attached program demonstrates how to read the memory of another process. The user can either launch a new process or specify the process id of a running process. The result is saved in a file.
a basic WordWrap program i created or modified from various source codes found on the InterNet .
it does not do a 100% percent job on every type of Text entered,
so please feel free to help improve this Source Code to handle every combination of Characters/Numbers/Etc.
Client/Server is a program that demonstrates how to use winsock to connect to a server or how to accept connections from a client. The program allows the user to send and receive data. Non printable characters are displayed as escape sequences and can also be entered as such. Here is one easy way to try this program:
1. Start two instances of the program.
2. Select "client mode" for one instance and "server mode" for the other.
3. Specify an ip address/host name and port to listen to for the server, then select "Listen" in the "Monitor" menu.
4. Specify a remote ip address/host name and port to connect to for the client, then select "Connect" in the "Client" menu.
5. You should now be able to send data between the two instances of the program through winsock.
This code can be used to manipulate an image into any space defined by four corners. Unlike an affine-transform (3 point transformation) which uses a parallelogram shaped space, this 4 point transformation can use absolutely any generic shape that can be defined by four points. Below is this code, split into the two files that I ended up using.
Code for DPointType.bas
Code:
Public Type DPOINT
X As Double
Y As Double
End Type
Code for FourPointTransform.cls
Code:
'Requires DPointType.bas
'The Points array holds 4 points. Below is an explanation of each point.
'Points(0) is the position that a rectangle's upper left point is mapped to.
'Points(1) is the position that a rectangle's upper right point is mapped to.
'Points(2) is the position that a rectangle's lower left point is mapped to.
'Points(3) is the position that a rectangle's lower right point is mapped to.
Friend Function X2(ByVal X As Double, ByVal Y As Double, ByVal ImgWidth As Double, ByVal ImgHeight As Double, _
ByRef Points() As DPOINT) As Double
Dim a As Double
Dim b As Double
Dim c As Double
Dim d As Double
b = (Points(1).X - Points(0).X) / (ImgWidth - 1)
d = Points(0).X
c = (Points(2).X - Points(0).X) / (ImgHeight - 1)
a = (Points(3).X - (ImgHeight - 1) * c - d - (ImgWidth - 1) * b) / ((ImgWidth - 1) * (ImgHeight - 1))
X2 = X * (Y * a + b) + Y * c + d
End Function
Friend Function Y2(ByVal X As Double, ByVal Y As Double, ByVal ImgWidth As Double, ByVal ImgHeight As Double, _
ByRef Points() As DPOINT) As Double
Dim a As Double
Dim b As Double
Dim c As Double
Dim d As Double
b = (Points(2).Y - Points(0).Y) / (ImgHeight - 1)
d = Points(0).Y
c = (Points(1).Y - Points(0).Y) / (ImgWidth - 1)
a = (Points(3).Y - (ImgHeight - 1) * b - (ImgWidth - 1) * c - d) / ((ImgHeight - 1) * (ImgWidth - 1))
Y2 = Y * (X * a + b) + X * c + d
End Function
Use the above class to transform an image in one picture box into a random shape in a second picture box, using the sample code below:
Code:
Private Sub TransformImage()
dim Xfrm as new FourPointTransform
dim Points(3) as DPOINT
Points(0).X=100 : Points(0).Y=20
Points(1).X=300 : Points(1).Y=45
Points(2).X=115 : Points(2).Y=200
Points(3).X=290 : Points(3).Y=230
for y = 0 to Picture1.Height-1
for x = 0 to Picture1.Width-1
u = Xfrm.X2(X, Y, Picture1.Width, Picture1.Height, Points)
v = Xfrm.Y2(X, Y, Picture1.Width, Picture1.Height, Points)
Picture2.pset(u,v),Picture1.point(x,y)
next x
next y
End Sub
Or use the above class to transform a portion of an image defined by any random 4-point shape in one picture box to fit correctly into a second picture box. This is the inverse of the above transformation. The code is very similar to the above, with just a few changes. See the code below
Code:
Private Sub InverseTransformImage()
dim Xfrm as new FourPointTransform
dim Points(3) as DPOINT
Points(0).X=100 : Points(0).Y=20
Points(1).X=300 : Points(1).Y=45
Points(2).X=115 : Points(2).Y=200
Points(3).X=290 : Points(3).Y=230
for y = 0 to Picture2.Height-1
for x = 0 to Picture2.Width-1
u = Xfrm.X2(X, Y, Picture2.Width, Picture2.Height, Points)
v = Xfrm.Y2(X, Y, Picture2.Width, Picture2.Height, Points)
Picture2.pset(x,y),Picture1.point(u,v)
next x
next y
End Sub
This routine waits for the specified amount of time without freezing the GUI or raising up the CPU usage.
Code:
Private Type MSG
hWnd As Long
Message As Long
wParam As Long
lParam As Long
Time As Long
Pt_X As Long
Pt_Y As Long
End Type
Private Declare Function KillTimer Lib "user32.dll" (ByVal hWnd As Long, ByVal nIDEvent As Long) As Long
Private Declare Function PeekMessage Lib "user32.dll" Alias "PeekMessageW" (ByRef lpMsg As MSG, ByVal hWnd As Long, ByVal wMsgFilterMin As Long, ByVal wMsgFilterMax As Long, ByVal wRemoveMsg As Long) As Long
Private Declare Function SetTimer Lib "user32.dll" (ByVal hWnd As Long, ByVal nIDEvent As Long, ByVal uElapse As Long, Optional ByVal lpTimerFunc As Long) As Long
Private Declare Function WaitMessage Lib "user32.dll" () As Long
'This routine waits for the specified amount of time before resuming with the next line of code
Public Function Wait(ByVal Milliseconds As Long) As Boolean
Const PM_QS_POSTMESSAGE = &H980000, WM_TIMER = &H113&
Dim TimerID As Long, M As MSG
TimerID = SetTimer(0&, App.ThreadID, Milliseconds)
If TimerID Then
Do: Wait = WaitMessage
If PeekMessage(M, -1&, WM_TIMER, WM_TIMER, PM_QS_POSTMESSAGE) Then If M.wParam = TimerID Then Exit Do
Loop Until DoEvents < 0
TimerID = KillTimer(0&, TimerID): Debug.Assert TimerID
End If
End Function
The attached Form demonstrates usage of this simple function.
I would like to do a crash reporter for my app as Firefox has one.
I will use GetExitCode to monitor the exit code of my app.
But I do not want to start my real app using another app.
I would rather like to monitor the already running process.
Is that the way to do it, or does anybody know how Firefox does it?
The module included in the attachment contains 3 routines that supplements VB's intrinsic Shell function by waiting for the shelled program to terminate before resuming with the next line of code without blocking other events from firing. The accompanying Form demonstrates usage of each function.
The Shell_n_Wait function augments the native Shell function by waiting for the shelled process until it exits. It also auto-expands environment variables before relaying them to Shell. Instead of retrieving the Process ID/Task ID, Shell_n_Wait returns the terminated process' Exit Code.
The ShellW function is probably the most flexible yet easy-to-use shelling routine ever coded. It accepts Unicode paths to executables or documents (registered file types). Paths can be fully qualified or relative and may contain navigational elements ("." or ".."), environment variables and/or arguments/parameters. The window style (normal, minimized, maximized, hidden, etc.) can be optionally requested. It features the ability to wait for the shelled program indefinitely or exactly as specified. Its return value depends on whether the shelled process is still alive or not. If the process still exists, it retrieves the Process ID, otherwise it returns the Exit Code.
The ShellWS function wraps the Windows Script Host's Run method as shown below:
Code:
'Runs a program in a new process.
Public Function ShellWS(ByRef Command As String, Optional ByVal WindowStyle As VbAppWinStyle = vbNormalFocus, _
Optional ByVal WaitOnReturn As Boolean) As Long
#Const Referenced = True
#If Not Referenced Then
ShellWS = CreateObject("WScript.Shell").Run(Command, WindowStyle, WaitOnReturn)
#Else
With New WshShell
ShellWS = .Run(Command, WindowStyle, WaitOnReturn)
End With
#End If 'Adapted from "Best Shell & Wait (No API's!)" by Matthew Roberts
End Function 'http://www.planet-source-code.com/vb/scripts/ShowCode.asp?txtCodeId=8349&lngWId=1
Client/Server is a program that demonstrates how to use winsock to make raw TCP connections to a server and how to accept connections from a client. The program allows the user to send and receive data. Non printable characters are displayed as escape sequences and can also be entered as such. Here is one easy way to try this program:
1. Start two instances of the program.
2. Select "client mode" for one instance and "server mode" for the other.
3. Specify an ip address/host name and port to listen to for the server, then select "Listen" in the "Monitor" menu.
4. Specify a remote ip address/host name and port to connect to for the client, then select "Connect" in the "Client" menu.
5. You should now be able to send data between the two instances of the program through winsock.
Image Monitor is a program that captures any image copied to the clipboard and saves it in a directory specified by the user. It's also a demonstration of how to write vb6 programs that display a system tray icon and balloon tooltips.
This VB6 project and VBScript file provides functionality similar to Windows Vista & 7's "Open file location" context menu for pre-Vista OSes. In Vista & 7, shortcut files have a handy context menu option, that upon clicking, pre-selects that shortcut's target in a new Explorer window. The VB6 project is fully Unicode-aware, capable of accepting Unicode filenames for shortcuts and their targets. The VBScript file requires an enabled Microsoft Windows Script Host (wscript.exe). Currently, both do not properly work with Advertised shortcuts. To install or uninstall, just open either of the two files without passing any command line parameter. Shown below is the code for the VBScript file.
Code:
Option Explicit
Private Const sKEY = "HKCU\Software\Classes\lnkfile\shell\OpenFileLocation\"
'Placing this under HKLM\SOFTWARE\Classes\lnkfile
'enables all user profiles to have this context menu.
Private Const sVALUE = "Open &file location"
'&f immediately selects this menu unlike the default
'&i in Vista which collides with "P&in to Start menu".
Private Const sCMD = "wscript.exe %WINDIR%\OpenFileLocation.vbs ""%1"""
'Save this in a file named "OpenFileLocation.vbs" in the
'"\WINDOWS" directory, or if preferred otherwise, edit
'the location & filename in this constant.
If WScript.Arguments.Count Then 'If arguments were passed to this file, Then
OpenFileLocation ' a shortcut file's location was specified
Else 'Else, no arguments were passed
InstallUninstallOFL ' go to Install/Uninstall mode
End If
Set WSH = Nothing 'Destroy object
Private Sub OpenFileLocation
Dim FSO, oShortcut, sFileSpec, sTarget
On Error Resume Next
'Get the shortcut file's location
sFileSpec = WScript.Arguments(0)
'Instantiate a Shortcut Object
Set oShortcut = WSH.CreateShortcut(sFileSpec)
'Retrieve the shortcut's target
sTarget = oShortcut.TargetPath
Set FSO = WScript.CreateObject("Scripting.FileSystemObject")
'If the shortcut points to an existing file or folder
If FSO.FileExists(sTarget) Then
'Pre-select that target in a new Explorer window
WSH.Run "explorer.exe /select,""" & sTarget & """"
ElseIf FSO.FolderExists(sTarget) Then
'Short-circuit the preceding expressions instead of using Or
WSH.Run "explorer.exe /select,""" & sTarget & """"
Else 'complain, er, inform if it's missing
WSH.Popup "Could not find:" & vbNewLine & vbNewLine & _
"""" & sTarget & """", , OFL, vbExclamation
End If
Set FSO = Nothing
Set oShortcut = Nothing 'Destroy objects
End Sub
Private Sub InstallUninstallOFL 'Install/Uninstall mode
Dim iButtons, sPrompt
iButtons = vbYesNoCancel Or vbQuestion Or vbDefaultButton3
sPrompt = "Do you want to add the ""Open file location"" context menu " & _
"option to shortcut files?" & vbNewLine & "(Select NO to remove)"
Select Case MsgBox(sPrompt, iButtons, "Install " & OFL & ".vbs")
Case vbYes: InstallOFL
Case vbNo: UninstallOFL
End Select
End Sub
Private Sub InstallOFL 'Adds the context menu entries to the Registry
On Error Resume Next
WSH.RegWrite sKEY, sVALUE, "REG_SZ"
WSH.RegWrite sKEY & CMD, sCMD, "REG_EXPAND_SZ"
If Err Then
MsgBox Err.Description, vbCritical, Err.Source
Else
MsgBox "Installed successfully!", vbInformation, OFL
End If
End Sub
Private Sub UninstallOFL 'Removes the context menu entries from the Registry
On Error Resume Next
WSH.RegDelete sKEY & CMD
WSH.RegDelete sKEY
If Err Then
MsgBox Err.Description, vbCritical, Err.Source
Else
MsgBox "Uninstalled successfully!", vbInformation, OFL
End If
End Sub
Menu Explorer displays a list of menu's found in any active windows, and displays the items found these menu's. The user can disable/enable these items. Note: there appear to be several types of menu's that can't be detected by this program.
The attached program demonstrates how to gather detailed module, subsystem and thread information of all active processes. This information is then written to a file.
The attached program demonstrates how to gather detailed module, subsystem and thread information of all active processes. This information is then written to a file.
I finally figured out how to do this. It generates a native Photoshop PSD file, 3 channels, 8bits per pixel, 256x256 size image. I set all the header stuff as constants basically (though I didn't use the Const statement, I used Dim, and then set them with var = val type lines farther down, so I could later make routines to set the values at runtime). I set them as constants for now because Photoshop (having originated as Mac software) uses Big Endian number in its main file format. And unlike TIFF where you can set II for Intel format (little endian) or MM for Mac format (big endian), Photoshops files are REQUIRE the multibyte values to be big endian, and conversion routines are not trivial. So I opted (for now) to just create a test image generator program with fixed values for all the multibyte values (which is ALL of the entries in the header, so I have fixed width, fixed height, fixed bitdepth, etc). That's why it's more of a fixed size test image generator than a true graphics software or image converter. Though later I plan to expand this to use the CopyMemory API to create a Little to Big Endian converter so I can change these values at runtime.
This is my program's current code.
Code:
Private Sub Form_Load()
Dim Pix(255, 255, 2) As Byte
For y = 0 To 255
For x = 0 To 255
Pix(x, y, 0) = (x * 4) And 255
Pix(x, y, 1) = (y * 4) And 255
Pix(x, y, 2) = (x \ 64) * 17 + (y \ 64) * 68
Next x
Next y
Dim Sig As String
Dim Ver As Integer
Dim Reserved(5) As Byte
Dim Chan As Integer
Dim PHeight As Long
Dim PWidth As Long
Dim Depth As Integer
Dim PMode As Integer
Dim NullLen As Long
Dim CompMethod As Integer
Sig = "8BPS"
Ver = &H100
Chan = &H300
PHeight = &H10000
PWidth = &H10000
Depth = &H800
PMode = &H300
Open "c:\temp\test.psd" For Binary As #1
Put #1, 1, Sig
Put #1, , Ver
Put #1, , Reserved()
Put #1, , Chan
Put #1, , PHeight
Put #1, , PWidth
Put #1, , Depth
Put #1, , PMode
Put #1, , NullLen
Put #1, , NullLen
Put #1, , NullLen
Put #1, , CompMethod
Put #1, , Pix()
Close #1
The attached program demonstrates how to extract strings containing only specific characters from a binary file. The project contains a class called TextBinClass and a form TextBinDemoWindow.
The class allows you to specify specific characters and extract these from a binary file. The form contains a demo which shows how to use this class and filter the resulting strings for specific things such as potential .dll references, e-mail addresses, GUIDs and URLs.
The class contains a few speed optimisations such as:
-Using a byte array instead of a string to store the binary data.
-Using the InStrB() function instead of InStr().
-Using the InputB$() function instead of Input$() to read the binary data into a byte array. Using Input$() and StrConv() appears to be slower.
Note:
The term "Unicode" (within the context of this program) simply refers to any string where every other character is a null character.
'Decompresses the contents of SrcZip into the folder DestDir.
Public Function ShellUnzip(ByRef SrcZip As String, ByRef DestDir As String) As Boolean
Const FOF_NOCONFIRMATION As Variant = 16
On Error Resume Next
With CreateObject("Shell.Application") 'Late-bound
'With New Shell 'Referenced
.NameSpace(CVar(DestDir)).CopyHere .NameSpace(CVar(SrcZip)).Items, FOF_NOCONFIRMATION
End With
ShellUnzip = (Err = 0&)
End Function
'Compresses a file or folder. The folder must end in a backslash ("\").
Public Function ShellZip(ByRef Source As String, ByRef DestZip As String) As Boolean
Const FOF_NOCONFIRMATION As Variant = 16
CreateNewZip DestZip
On Error Resume Next
With CreateObject("Shell.Application") 'Late-bound
'With New Shell 'Referenced
If Right$(Source, 1&) = "\" Then
.NameSpace(CVar(DestZip)).CopyHere .NameSpace(CVar(Source)).Items, FOF_NOCONFIRMATION
Else
.NameSpace(CVar(DestZip)).CopyHere CVar(Source), FOF_NOCONFIRMATION
End If
End With
ShellZip = (Err = 0&)
End Function
'Creates a new empty Zip file only if it doesn't exist.
Public Function CreateNewZip(ByRef sFileName As String) As Boolean
Dim ZipHeader As String * 22
On Error GoTo 1
If GetAttr(sFileName) Then Exit Function 'Don't overwrite existing file
1 Err.Clear: Resume 2
2 On Error GoTo 3
Open sFileName For Binary Access Write As #99
Mid$(ZipHeader, 1&) = "PK" & Chr$(5&) & Chr$(6&)
Put #99, 1&, ZipHeader
3 Close #99
Hello,
I am impressed by few Antiviruses applications. I am getting 'Access Denied' message on killing them via Process Manager in Windows. So My question is, How can we create such application in VB6 which would be unable to kill by process managers?