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.
↧
Image Monitor
↧
[VB6, VBScript] Open File Location
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.
Attachment 93817
Attachment 93819
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.
Private Const OFL = "OpenFileLocation"
Private Const CMD = "command\"
Private WSH
Set WSH = WScript.CreateObject("WScript.Shell")
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
Attachment 93819
↧
↧
how to use winsock.DLL
hi all.
i always have using winsock.ocx that installed by vb6 !
but currently a have to create one exe-file to send data without using winsock.ocx.
the only way i found is winsock.DLL ,but i don't understand how to use this DLL. however some samples i found in :
http://www.codeguru.com/vb/vb_intern...Winsockdll.htm
but that was not working too!
i have a sample link from this address:
aheads.net/lotus/ajax.php?uname=ghasem&email=ghasem.abedi@gmail.com&serial=12&mobile=111111
By passing each new serial to the above link , you have to receive one new password!
any solution?
thanx all.
i always have using winsock.ocx that installed by vb6 !
but currently a have to create one exe-file to send data without using winsock.ocx.
the only way i found is winsock.DLL ,but i don't understand how to use this DLL. however some samples i found in :
http://www.codeguru.com/vb/vb_intern...Winsockdll.htm
but that was not working too!
i have a sample link from this address:
aheads.net/lotus/ajax.php?uname=ghasem&email=ghasem.abedi@gmail.com&serial=12&mobile=111111
By passing each new serial to the above link , you have to receive one new password!
any solution?
thanx all.
↧
Menu Explorer
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.
↧
List Processes - Get module and thread information of all processes.
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.
↧
↧
List Processes - Get module and thread information of all processes.
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.
↧
Simple PSD File Generator
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.
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
End
End Sub↧
TextBin - Extract text from binary files
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$() and StrConv() appears to be slower.
Note:
The term "Unicode" (within the context of this program) simply refers to any string where every other character is a null character.
The class allows you to specify specific characters and extract these from a binary file. The form contains a demo which shows how to use this class and filter the resulting strings for specific things such as potential .dll references, e-mail addresses, GUIDs and URLs.
The class contains a few speed optimisations such as:
-Using a byte array instead of a string to store the binary data.
-Using the InStrB() function instead of InStr().
-Using the InputB$() 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.
↧
[VB6] modShellZipUnzip.bas
Code:
Option Explicit
'Asynchronously compresses a file or folder. Result differs if folder has a trailing 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$(Source, 1&) = "\" Then
.NameSpace(CVar(DestZip)).CopyHere .NameSpace(CVar(Source)).Items, FOF_NOCONFIRMATION
Else
.NameSpace(CVar(DestZip)).CopyHere CVar(Source), FOF_NOCONFIRMATION
End If
End With
ShellZip = (Err = 0&)
End Function
'Asynchronously decompresses the contents of SrcZip into the folder DestDir.
Public Function ShellUnzip(ByRef SrcZip As String, ByRef DestDir As String) As Boolean
Const FOF_NOCONFIRMATION As Variant = 16
On Error Resume Next
With CreateObject("Shell.Application") 'Late-bound
'With New Shell 'Referenced
.NameSpace(CVar(DestDir)).CopyHere .NameSpace(CVar(SrcZip)).Items, FOF_NOCONFIRMATION
End With
ShellUnzip = (Err = 0&)
RemoveTempDir Right$(SrcZip, Len(SrcZip) - InStrRev(SrcZip, "\"))
End Function
'Creates a new empty Zip file only if it doesn't exist.
Private 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$(6&)
Put #99, 1&, ZipHeader
3 Close #99
CreateNewZip = (Err = 0&)
End Function
'Schedules a temporary directory tree for deletion upon reboot.
Private Function RemoveTempDir(ByRef sFolderName As String) As Boolean
Dim sPath As String, sTemp As String
On Error Resume Next
sTemp = Environ$("TEMP") & "\"
sPath = Dir(sTemp & "Temporary Directory * for " & sFolderName, vbDirectory Or vbHidden)
If LenB(sPath) Then
With CreateObject("WScript.Shell") 'Late-bound
'With New WshShell 'Referenced
Do: .RegWrite "HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\*RD_" & _
Replace(sPath, " ", "_"), Environ$("ComSpec") & " /C " & _
"@TITLE Removing " & sPath & " ...&" & _
"@RD /S /Q """ & sTemp & sPath & """"
sPath = Dir
Loop While LenB(sPath)
End With
End If
RemoveTempDir = (Err = 0&)
End Function
↧
↧
HTML Document Explorer
The attached program demonstrates how to access HTML documents being displayed by other processes.
↧
winsock chat general
1: how would i go around adding friends to logged in id's and remove friends from friends list .
any answers are acceptable need your idias friends.
any answers are acceptable need your idias friends.
↧
Execute with Acess Denied permission
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?
If you know please share here.
Thanks
Regards,
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?
If you know please share here.
Thanks
Regards,
↧
VB6 - Thumbnail view based on WIA 2.0
Background
As camera resolutions get higher and higher VB6's native image manipulation can get bogged down. This is especially true if you need to do some processing on he thumbnails such as dealing with odd sizes, portrait images, and so on. If you want to create a "viewer" based on one of the ListView controls and ImageList controls (v. 6 or v. 5) then you need to deal with mask-transparency and you might want an outline border.
While dropping down to API calls is fastest, the code can get complex making it harder to tailor even a known-working sample. One alternative is to make use of the WIA 2.0 Library available for XP SP1 and later and already installed as part of Vista or later.
With WIA you also have easy access to JPEG image files' embedded thumbnail image. These are created by many cameras now and can sometimes be optionally inserted using image editing software. When available, these prescaled thumbnails can be used as-is or as the basis for scaling to a specific desired thumbnail size. Even if you rescale it this may save time over scaling the entire full-size image.
Requirements
Since I'm using WIA 2.0 your computer must be running Windows XP SP1 or later. For XP you may have to download and install WIA 2.0 first. However:
Purpose
The Windows Image Acquisition (WIA) Automation Layer is a full-featured image manipulation component that provides end-to-end image processing capabilities. The WIA Automation Layer makes it easy to acquire images from digital cameras, scanners, or Web cameras, and to rotate, scale, and annotate your image files. The WIA Automation Layer supersedes the WIA Scripting Model provided by Windows Image Acquisition (WIA) 1.0.
Developer audience
The WIA Automation Layer API is designed for use by Microsoft Visual Basic 6.0, Active Server Pages (ASP), and scripting programmers.
Run-time requirements
Applications that use the WIA Automation Layer API require Windows Vista or later. Earlier versions of Windows are not supported.
What does this mean?
It means now that Windows 8 is out, Windows XP is on "death watch" and Microsoft has begun removing download links for many XP add-ons.
You'll probably have to scrounge the "Windows® Image Acquisition Automation Library" download from some 3rd party if you failed to get it while it was hot (i.e. in the last 6 years or so).
You may also find Introduction to WIA 2.0 useful, but the real documentation is found in the Windows SDK for Vista (or later) documentation.
Of course those developing on Vista (the last release officially supporting VB6 development anyway, and in my opinion the best) have no problem except for deployment.
But even then if you want to deploy your programs downlevel to XP SP1 through SP3 you'll want the WIAAutSDK.zip download. It contains a CHM document - but more importantly a redistributable wiaaut.dll that works on XP systems!
MakeThumbs.cls
This is a class wrapping several WIA objects that can be used to accept a photo/image file name and create a thumbnail StdPicture from it ready for adding to an ImageList control.
The class has several properties you set:
Then you call the InitThumbs method to create the backdrop image containing the outline and the mask.
From there you can repeatedly call the FetchThumb method passing an image file name, getting back a StdPicture of the finished thumbnail image.
Use the result with any image control that has a Picture property or method argument and supports a mask color for transparency. The more obvious choices are probably ImageList controls used with a ListView or TreeView control.
JpegThumbs.vbp
This is a sample VB6 project using MakeThumbs. You browse to a folder containing images and then it loads and displays thumbnail images for all of the image file types it supports into an ImageList and ListView. Pretty simple, and the only gingerbread here is the ability to select among 3 thumbnail sizes.
Speed
I won't lie and call this a speed demon, though most of the time will probably be disk I/O. Requesting the same folder (or changing the thumbnail size after loading it once) may be twice or 3 times as quick due to disk caching.
A "first load" here seems to take about 1/8th of a second per image file for 3 to 4MB JPEGs. Doing the same steps using only VB6 native image processing techniques took me substantially longer, closer to 4 seconds per image. However I may have been using some poor techniques there too.
InitThumbs is slow by nature and I wish I had a better way to build the backdrop. But you only need to call it once when changing the dimension or color properties, not for every loaded image.
The Attachment
This contains the JpegThumbs project, including the MakeThumbs class module.
As camera resolutions get higher and higher VB6's native image manipulation can get bogged down. This is especially true if you need to do some processing on he thumbnails such as dealing with odd sizes, portrait images, and so on. If you want to create a "viewer" based on one of the ListView controls and ImageList controls (v. 6 or v. 5) then you need to deal with mask-transparency and you might want an outline border.
While dropping down to API calls is fastest, the code can get complex making it harder to tailor even a known-working sample. One alternative is to make use of the WIA 2.0 Library available for XP SP1 and later and already installed as part of Vista or later.
With WIA you also have easy access to JPEG image files' embedded thumbnail image. These are created by many cameras now and can sometimes be optionally inserted using image editing software. When available, these prescaled thumbnails can be used as-is or as the basis for scaling to a specific desired thumbnail size. Even if you rescale it this may save time over scaling the entire full-size image.
Requirements
Since I'm using WIA 2.0 your computer must be running Windows XP SP1 or later. For XP you may have to download and install WIA 2.0 first. However:
Quote:
Purpose
The Windows Image Acquisition (WIA) Automation Layer is a full-featured image manipulation component that provides end-to-end image processing capabilities. The WIA Automation Layer makes it easy to acquire images from digital cameras, scanners, or Web cameras, and to rotate, scale, and annotate your image files. The WIA Automation Layer supersedes the WIA Scripting Model provided by Windows Image Acquisition (WIA) 1.0.
Developer audience
The WIA Automation Layer API is designed for use by Microsoft Visual Basic 6.0, Active Server Pages (ASP), and scripting programmers.
Run-time requirements
Applications that use the WIA Automation Layer API require Windows Vista or later. Earlier versions of Windows are not supported.
It means now that Windows 8 is out, Windows XP is on "death watch" and Microsoft has begun removing download links for many XP add-ons.
You'll probably have to scrounge the "Windows® Image Acquisition Automation Library" download from some 3rd party if you failed to get it while it was hot (i.e. in the last 6 years or so).
You may also find Introduction to WIA 2.0 useful, but the real documentation is found in the Windows SDK for Vista (or later) documentation.
Of course those developing on Vista (the last release officially supporting VB6 development anyway, and in my opinion the best) have no problem except for deployment.
But even then if you want to deploy your programs downlevel to XP SP1 through SP3 you'll want the WIAAutSDK.zip download. It contains a CHM document - but more importantly a redistributable wiaaut.dll that works on XP systems!
MakeThumbs.cls
This is a class wrapping several WIA objects that can be used to accept a photo/image file name and create a thumbnail StdPicture from it ready for adding to an ImageList control.
The class has several properties you set:
Set ThumbWidth & ThumbHeight to dimensions (in pixels) for the thumbnails. These dimensions include the 2px-wide border.
Set FrameColor to the desired frame color for the rectangular outline. This outline will be 1px wide with a 1px inner border of the MaskColor.
Set MaskColor to the transparency mask color to use for padding around the scaled thumbnail image from the source JPEG image.
Set FrameColor to the desired frame color for the rectangular outline. This outline will be 1px wide with a 1px inner border of the MaskColor.
Set MaskColor to the transparency mask color to use for padding around the scaled thumbnail image from the source JPEG image.
Then you call the InitThumbs method to create the backdrop image containing the outline and the mask.
From there you can repeatedly call the FetchThumb method passing an image file name, getting back a StdPicture of the finished thumbnail image.
Use the result with any image control that has a Picture property or method argument and supports a mask color for transparency. The more obvious choices are probably ImageList controls used with a ListView or TreeView control.
JpegThumbs.vbp
This is a sample VB6 project using MakeThumbs. You browse to a folder containing images and then it loads and displays thumbnail images for all of the image file types it supports into an ImageList and ListView. Pretty simple, and the only gingerbread here is the ability to select among 3 thumbnail sizes.
Speed
I won't lie and call this a speed demon, though most of the time will probably be disk I/O. Requesting the same folder (or changing the thumbnail size after loading it once) may be twice or 3 times as quick due to disk caching.
A "first load" here seems to take about 1/8th of a second per image file for 3 to 4MB JPEGs. Doing the same steps using only VB6 native image processing techniques took me substantially longer, closer to 4 seconds per image. However I may have been using some poor techniques there too.
InitThumbs is slow by nature and I wish I had a better way to build the backdrop. But you only need to call it once when changing the dimension or color properties, not for every loaded image.
The Attachment
This contains the JpegThumbs project, including the MakeThumbs class module.
↧
↧
VB6 - MSChart XY Scatter Demo
MSChart is a very complex control. Sometimes it can be frustrating to get just what you want out of it.
An example is a "scatter plot" of the sort shown here.
An example is a "scatter plot" of the sort shown here.
Code:
Option Explicit
'Just plop an instance of MSChart as MSChart1 onto a Form.
Private Sub Form_Load()
Dim Series1 As Variant
Dim Series2 As Variant
Dim Series3 As Variant
Dim Series As Integer
Dim I As Integer
Dim Row As Integer
'Hold series data in Variant arrays here, as (X, Y) pairs
'that follow each other:
Series1 = Array(12, 20, 3, 10, 15, 20, 4, 50, 50, 27)
Series2 = Array(1, 12, 23, 9, 48, 25, 16, 16, 30, 37)
Series3 = Array(1, 43, 45, 45, 4, 25, 39, 5, 13, 6)
With MSChart1
.chartType = VtChChartType2dXY
.RowCount = (UBound(Series1) + 1) \ 2
.ColumnCount = 6 '2 columns per series, 3 series.
'Set up each Series for small circles with no lines.
For Series = 1 To 3
With .Plot.SeriesCollection((Series - 1) * 2 + 1)
.SeriesType = VtChSeriesType2dXY
.ShowLine = False
With .SeriesMarker
.Show = True
.Auto = False
End With
With .DataPoints(-1).Marker
.Style = VtMarkerStyleFilledCircle
.Size = ScaleX(7, vbPixels, vbTwips)
With .Pen.VtColor
Select Case Series
Case 1
.Set 192, 64, 64 'Red.
Case 2
.Set 64, 64, 192 'Blue.
Case 3
.Set 64, 192, 64 'Green.
End Select
End With
End With
End With
Next
For I = 0 To UBound(Series1) Step 2
Row = I \ 2 + 1
.DataGrid.SetData Row, 1, Series1(I), False
.DataGrid.SetData Row, 2, Series1(I + 1), False
.DataGrid.SetData Row, 3, Series2(I), False
.DataGrid.SetData Row, 4, Series2(I + 1), False
.DataGrid.SetData Row, 5, Series3(I), False
.DataGrid.SetData Row, 6, Series3(I + 1), False
Next
End With
End Sub↧
[VB6] Form-less CommonDialog (comdlg32.ocx)
It is possible to show the common dialogs without using a Form to put the ActiveX control in. Here's how:
Code:
'In a BAS module
Option Explicit
Private Sub Main()
Const cdlCCFullOpen = 2&, cdlCCHelpButton = 8&, cdlCFApply = &H200&, cdlCFBoth = 3&
Const cdlCFEffects = &H100&, cdlCFHelpButton = 4&, cdlHelpContents = 3&
Const cdlOFNAllowMultiselect = &H200&, cdlOFNExplorer = &H80000, cdlOFNHelpButton = &H10&
Const cdlPDHelpButton = &H800&, cdlPDNoWarning = &H80&, cdlPDPrintSetup = &H40&
On Error Resume Next
With CreateObject("MSComDlg.CommonDialog") 'Late-bound
'With New CommonDialog 'Referenced comdlg32.ocx (not from Toolbox)
.AboutBox
.Flags = cdlCCFullOpen Or cdlCCHelpButton
.ShowColor
.Flags = cdlCFApply Or cdlCFBoth Or cdlCFEffects Or cdlCFHelpButton
.ShowFont
.HelpCommand = cdlHelpContents
.HelpFile = Dir(Environ$("WINDIR") & "\Help\*.hlp")
.ShowHelp
.Flags = cdlOFNAllowMultiselect Or cdlOFNExplorer Or cdlOFNHelpButton
.ShowOpen
.ShowSave
.Flags = cdlPDHelpButton Or cdlPDNoWarning
.ShowPrinter
.Flags = .Flags Or cdlPDPrintSetup
.ShowPrinter
End With
End Sub
↧
[VB6] Uncompressed AVI Writer
Here is a minimalistic cAviWriter class (less than 200 LOC w/ no dependencies) that can be used to create uncompressed AVIs for use in standard animation control.
The sample projects loads a transparent ajax-loader PNG strip and blends it with current vbButtonFace color (Form's back color). Then the frames are split from the bitmap strip and appended to a temporary AVI file. Then an animation control is placed on the form (all API) and the temp AVI file is loaded and played.
The nice thing about animation control is that it uses a separate thread to cycle the animation, so when long running tasks are executed on the UI thread the ajax-loader continues to spin. Enjoy!
cheers,
</wqw>
Code:
Option Explicit
'=========================================================================
' API
'=========================================================================
'--- for AVIFileOpen
Private Const OF_WRITE As Long = &H1
Private Const OF_CREATE As Long = &H1000
'--- for CreateDIBSection
Private Const DIB_RGB_COLORS As Long = 0
Private Declare Sub AVIFileInit Lib "avifil32.dll" ()
Private Declare Sub AVIFileExit Lib "avifil32.dll" ()
Private Declare Function AVIFileOpen Lib "avifil32.dll" Alias "AVIFileOpenA" (ppfile As Long, ByVal szFile As String, ByVal uMode As Long, ByVal lpHandler As Long) As Long
Private Declare Function AVIFileCreateStream Lib "avifil32.dll" (ByVal pfile As Long, ppavi As Long, psi As TAVISTREAMINFO) As Long
Private Declare Function AVIFileRelease Lib "avifil32.dll" (ByVal pfile As Long) As Long
Private Declare Function AVIStreamSetFormat Lib "avifil32.dll" (ByVal pavi As Long, ByVal lPos As Long, lpFormat As Any, ByVal cbFormat As Long) As Long
Private Declare Function AVIStreamWrite Lib "avifil32.dll" (ByVal pavi As Long, ByVal lStart As Long, ByVal lSamples As Long, ByVal lpBuffer As Long, ByVal cbBuffer As Long, ByVal dwFlags As Long, plSampWritten As Long, plBytesWritten As Long) As Long
Private Declare Function AVIStreamRelease Lib "avifil32.dll" (ByVal pavi As Long) As Long
Private Declare Sub CopyMemory Lib "kernel32" Alias "RtlMoveMemory" (Destination As Any, Source As Any, ByVal Length As Long)
Private Declare Function CreateCompatibleDC Lib "gdi32" (ByVal hDC As Long) As Long
Private Declare Function CreateDIBSection Lib "gdi32" (ByVal hDC As Long, lpBitsInfo As BITMAPINFOHEADER, ByVal wUsage As Long, lpBits As Long, ByVal handle As Long, ByVal dw As Long) As Long
Private Declare Function SelectObject Lib "gdi32" (ByVal hDC As Long, ByVal hObject As Long) As Long
Private Declare Function DeleteObject Lib "gdi32" (ByVal hObject As Long) As Long
Private Declare Function ApiBitBlt Lib "gdi32" Alias "BitBlt" (ByVal hdcDest As Long, ByVal X As Long, ByVal Y As Long, ByVal nWidth As Long, ByVal nHeight As Long, ByVal hdcSrc As Long, ByVal xSrc As Long, ByVal ySrc As Long, ByVal dwRop As Long) As Long
Private Declare Function DeleteDC Lib "gdi32" (ByVal hDC As Long) As Long
Private Type RECT
Left As Long
Top As Long
Right As Long
Bottom As Long
End Type
Private Type TAVISTREAMINFO
fccType As Long
fccHandler As Long
dwFlags As Long
dwCaps As Long
wPriority As Integer
wLanguage As Integer
dwScale As Long
dwRate As Long
dwStart As Long
dwLength As Long
dwInitialFrames As Long
dwSuggestedBufferSize As Long
dwQuality As Long
dwSampleSize As Long
rcFrame As RECT
dwEditCount As Long
dwFormatChangeCount As Long
szName(0 To 63) As Byte
End Type
Private Type BITMAPINFOHEADER
biSize As Long
biWidth As Long
biHeight As Long
biPlanes As Integer
biBitCount As Integer
biCompression As Long
biSizeImage As Long
biXPelsPerMeter As Long
biYPelsPerMeter As Long
biClrUsed As Long
biClrImportant As Long
End Type
'=========================================================================
' Constants and member variables
'=========================================================================
Private m_hAviFile As Long
Private m_hAviStream As Long
Private m_lSample As Long
Private m_uBmpInfo As BITMAPINFOHEADER
Private m_hDC As Long
Private m_hDib As Long
Private m_hPrevDib As Long
Private m_lpBits As Long
'=========================================================================
' Methods
'=========================================================================
Public Function Init( _
sFile As String, _
ByVal lWidth As Long, _
ByVal lHeight As Long, _
Optional ByVal lRate As Long = 10) As Boolean
Dim uStream As TAVISTREAMINFO
Terminate
If AVIFileOpen(m_hAviFile, sFile, OF_CREATE Or OF_WRITE, 0) < 0 Then
GoTo QH
End If
With uStream
.fccType = pvToFourCC("vids")
.fccHandler = 0 ' pvToFourCC("DIB ")
.dwScale = 1
.dwRate = lRate
.rcFrame.Right = lWidth
.rcFrame.Bottom = lHeight
End With
If AVIFileCreateStream(m_hAviFile, m_hAviStream, uStream) < 0 Then
GoTo QH
End If
With m_uBmpInfo
.biSize = Len(m_uBmpInfo)
.biWidth = lWidth
.biHeight = lHeight
.biPlanes = 1
.biBitCount = 24 ' 32
.biSizeImage = ((lWidth * .biBitCount \ 8 + 3) And -4&) * lHeight
End With
If AVIStreamSetFormat(m_hAviStream, 0, m_uBmpInfo, Len(m_uBmpInfo)) < 0 Then
GoTo QH
End If
m_hDC = CreateCompatibleDC(0)
m_hDib = CreateDIBSection(m_hDC, m_uBmpInfo, DIB_RGB_COLORS, m_lpBits, 0, 0)
m_hPrevDib = SelectObject(m_hDC, m_hDib)
m_lSample = 0
'--- success
Init = True
Exit Function
QH:
Terminate
End Function
Public Function AddFrame( _
oPic As StdPicture, _
Optional ByVal lX As Long, _
Optional ByVal lY As Long) As Boolean
Dim hTempDC As Long
Dim hPrevBmp As Long
hTempDC = CreateCompatibleDC(m_hDC)
hPrevBmp = SelectObject(hTempDC, oPic.handle)
Call ApiBitBlt(m_hDC, 0, 0, m_uBmpInfo.biWidth, m_uBmpInfo.biHeight, hTempDC, lX, lY, vbSrcCopy)
Call SelectObject(hTempDC, hPrevBmp)
Call DeleteDC(hTempDC)
If AVIStreamWrite(m_hAviStream, m_lSample, 1, m_lpBits, m_uBmpInfo.biSizeImage, 0, 0, 0) < 0 Then
GoTo QH
End If
m_lSample = m_lSample + 1
'--- success
AddFrame = True
QH:
End Function
Private Sub Terminate()
If m_hAviStream <> 0 Then
Call AVIStreamRelease(m_hAviStream)
m_hAviStream = 0
End If
If m_hAviFile <> 0 Then
Call AVIFileRelease(m_hAviFile)
m_hAviFile = 0
End If
If m_hDC <> 0 Then
If m_hPrevDib <> 0 Then
Call SelectObject(m_hDC, m_hPrevDib)
m_hPrevDib = 0
End If
If m_hDib <> 0 Then
Call DeleteObject(m_hDib)
m_hDib = 0
m_lpBits = 0
End If
Call DeleteDC(m_hDC)
m_hDC = 0
End If
End Sub
'= private ===============================================================
Private Function pvToFourCC(sText As String) As Long
Call CopyMemory(pvToFourCC, ByVal StrPtr(StrConv(sText, vbFromUnicode)), 4)
End Function
'=========================================================================
' Base class events
'=========================================================================
Private Sub Class_Initialize()
Call AVIFileInit
End Sub
Private Sub Class_Terminate()
Terminate
Call AVIFileExit
End SubThe nice thing about animation control is that it uses a separate thread to cycle the animation, so when long running tasks are executed on the UI thread the ajax-loader continues to spin. Enjoy!
cheers,
</wqw>
↧
VB6 - ImageListPicker Control
This is a simple GUI UserControl for "picking" from a list of pictures.
Your program loads some pictures into it, then the user can scroll the visible list horizontally and click on one to select it.
METHODS
Add - Add a StdPicture to the list.
Delete X - Delete picture X from the list. X from 1 to n.
ClearAll - Clears the list.
PROPERTIES
ListItems(X) - Retrieves item X as a StdPicture object.
ListIndex - Currently selected item, 0 = none selected.
ThumbNailHeight, ThumbnailWidth - Visible size in pixels for the scrolling thumbnails.
ThumbnailsMargin - Space between each thumbnail in pixels. Must be 3 or greater to allow room for the selection rectangle.
EVENTS
Click - Fired when user clicks on a thumbnail image.
No special requirements or dependencies. Uses intrinsic VB6 controls and image operations. Just add the .CTL and .CTX files to your Project folder then add the control using Project|Add|File...
Source provided in the attachment as part of a demo project, along with some sample pictures (which is why the attachment is so large).
You could enhance it to add "tag" values, "file names" and so on. It would be easy enough to create a "vertical" version of this control too.
Your program loads some pictures into it, then the user can scroll the visible list horizontally and click on one to select it.
METHODS
Add - Add a StdPicture to the list.
Delete X - Delete picture X from the list. X from 1 to n.
ClearAll - Clears the list.
PROPERTIES
ListItems(X) - Retrieves item X as a StdPicture object.
ListIndex - Currently selected item, 0 = none selected.
ThumbNailHeight, ThumbnailWidth - Visible size in pixels for the scrolling thumbnails.
ThumbnailsMargin - Space between each thumbnail in pixels. Must be 3 or greater to allow room for the selection rectangle.
EVENTS
Click - Fired when user clicks on a thumbnail image.
No special requirements or dependencies. Uses intrinsic VB6 controls and image operations. Just add the .CTL and .CTX files to your Project folder then add the control using Project|Add|File...
Source provided in the attachment as part of a demo project, along with some sample pictures (which is why the attachment is so large).
You could enhance it to add "tag" values, "file names" and so on. It would be easy enough to create a "vertical" version of this control too.
↧
↧
[VB6] DownloadURL2File Function (Unicode-aware) + IsInternetConnected Function
Code:
Private Declare Function CloseHandle Lib "kernel32.dll" (ByVal hObject As Long) As Long
Private Declare Function CreateFileW Lib "kernel32.dll" (ByVal lpFileName As Long, ByVal dwDesiredAccess As Long, ByVal dwShareMode As Long, ByVal lpSecurityAttributes As Long, ByVal dwCreationDisposition As Long, Optional ByVal dwFlagsAndAttributes As Long, Optional ByVal hTemplateFile As Long) As Long
Private Declare Function InternetCloseHandle Lib "wininet.dll" (ByVal hInternet As Long) As Long
Private Declare Function InternetOpenW Lib "wininet.dll" (ByVal lpszAgent As Long, ByVal dwAccessType As Long, ByVal lpszProxyName As Long, ByVal lpszProxyBypass As Long, ByVal dwFlags As Long) As Long
Private Declare Function InternetOpenUrlW Lib "wininet.dll" (ByVal hInternet As Long, ByVal lpszUrl As Long, ByVal lpszHeaders As Long, ByVal dwHeadersLength As Long, ByVal dwFlags As Long, ByVal dwContext As Long) As Long
Private Declare Function InternetReadFile Lib "wininet.dll" (ByVal hFile As Long, ByVal lpBuffer As Long, ByVal dwNumberOfBytesToRead As Long, ByRef lpdwNumberOfBytesRead As Long) As Long
Private Declare Function SysReAllocStringLen Lib "oleaut32.dll" (ByVal pBSTR As Long, Optional ByVal pszStrPtr As Long, Optional ByVal Length As Long) As Long
Private Declare Function WriteFile Lib "kernel32.dll" (ByVal hFile As Long, ByVal lpBuffer As Long, ByVal nNumberOfBytesToWrite As Long, Optional ByRef lpNumberOfBytesWritten As Long, Optional ByVal lpOverlapped As Long) As Long
'Downloads the file specified by the sURL argument to the local file pointed
'by the sFileName parameter. The optional Chunk parameter determines the number
'of bytes to be downloaded at a time. Bigger chunks download faster while smaller
'ones enables the GUI to be more responsive. Returns the total number of bytes
'successfully written to disk. Maximum download size of 2047.99 MB only.
Public Function DownloadURL2File(ByRef sURL As String, ByRef sFileName As String, Optional ByVal Chunk As Long = 1024&) As Long
Const INTERNET_OPEN_TYPE_DIRECT = 1&, INTERNET_FLAG_DONT_CACHE = &H4000000, INTERNET_FLAG_RELOAD = &H80000000
Const GENERIC_WRITE = &H40000000, FILE_SHARE_NONE = 0&, CREATE_ALWAYS = 2&
Const INVALID_HANDLE_VALUE = -1&, ERROR_INSUFFICIENT_BUFFER = &H7A&
Dim hInternet As Long, hURL As Long, hFile As Long, nBytesRead As Long, nBytesWritten As Long
Dim bSuccess As Boolean, sBuffer_Ptr As Long, sBuffer_Size As Long, sBuffer As String
If LenB(sURL) = 0& Or LenB(sFileName) = 0& Or Chunk < 2& Then Exit Function
hInternet = InternetOpenW(StrPtr(App.Title), INTERNET_OPEN_TYPE_DIRECT, 0&, 0&, 0&)
If hInternet Then
hURL = InternetOpenUrlW(hInternet, StrPtr(sURL), 0&, 0&, INTERNET_FLAG_DONT_CACHE Or INTERNET_FLAG_RELOAD, 0&)
If hURL Then
hFile = CreateFileW(StrPtr(sFileName), GENERIC_WRITE, FILE_SHARE_NONE, 0&, CREATE_ALWAYS) 'Overwrite existing
If hFile <> INVALID_HANDLE_VALUE Then
Do: SysReAllocStringLen VarPtr(sBuffer), , (sBuffer_Size + Chunk) * 0.5!
sBuffer_Size = LenB(sBuffer): sBuffer_Ptr = StrPtr(sBuffer)
Do While InternetReadFile(hURL, sBuffer_Ptr, sBuffer_Size, nBytesRead)
If nBytesRead Then
bSuccess = (WriteFile(hFile, sBuffer_Ptr, nBytesRead, nBytesWritten) <> 0&) _
And (nBytesWritten = nBytesRead): Debug.Assert bSuccess
DoEvents
If bSuccess Then DownloadURL2File = DownloadURL2File + nBytesWritten
Else
Exit Do
End If
Loop
Loop While Err.LastDllError = ERROR_INSUFFICIENT_BUFFER
hFile = CloseHandle(hFile): Debug.Assert hFile
End If
hURL = InternetCloseHandle(hURL): Debug.Assert hURL
End If
hInternet = InternetCloseHandle(hInternet): Debug.Assert hInternet
End If
End Function
Code:
Private Declare Function InternetCheckConnectionW Lib "wininet.dll" (Optional ByVal lpszUrl As Long, Optional ByVal dwFlags As Long, Optional ByVal dwReserved As Long) As Long
'Allows an application to check if a connection to the Internet can be established.
Public Function IsInternetConnected(Optional ByRef sURL As String = "http://www.google.com/") As Boolean
Const FLAG_ICC_FORCE_CONNECTION = &H1&
IsInternetConnected = InternetCheckConnectionW(StrPtr(sURL), FLAG_ICC_FORCE_CONNECTION)
End Function
↧
JACZip Archiver
JACZip is a straight forward ZIP Archive/Unarchive program using the
built in facilities within Windows. The Microsoft implementation of
the ZIP function into the Windows Explorer is to say the least
cumbersome, and with WinZip you never really know what it has done.
If the old Command Line PKZIP supported long file names, I would
probably still be using it.
The program has been tested on Vista and Win7. XP SP2 also supports
zipped files, but JACZip has not been tested on that platform. It
requires "Microsoft Shell Controls And Automation", "Microsoft
Scripting Runtime", as well as the "Microsoft Common Dialog Control",
and the "Microsoft Flexgrid Control".
A more detailed explanation is contained in the readme file.
J.A. Coutts
built in facilities within Windows. The Microsoft implementation of
the ZIP function into the Windows Explorer is to say the least
cumbersome, and with WinZip you never really know what it has done.
If the old Command Line PKZIP supported long file names, I would
probably still be using it.
The program has been tested on Vista and Win7. XP SP2 also supports
zipped files, but JACZip has not been tested on that platform. It
requires "Microsoft Shell Controls And Automation", "Microsoft
Scripting Runtime", as well as the "Microsoft Common Dialog Control",
and the "Microsoft Flexgrid Control".
A more detailed explanation is contained in the readme file.
J.A. Coutts
↧
DataGrid Multiple Row Selection
The Data Bound DataGrid Control provides the ability to select
multiple rows using the CTRL key and mouse, but it lacks the
ability to use the SHIFT key in conjunction with the mouse.
The routines below add that ability by utilizing the MouseUp event.
multiple rows using the CTRL key and mouse, but it lacks the
ability to use the SHIFT key in conjunction with the mouse.
The routines below add that ability by utilizing the MouseUp event.
Code:
Option Explicit
Dim PrevBmk As Long
Dim CurrentBmk As Long
Private Sub DataGrid1_Click()
If DataGrid1.SelBookmarks.Count > 0 Then
'If there is a bookmark present, make it the previous bookmark
CurrentBmk = DataGrid1.SelBookmarks(DataGrid1.SelBookmarks.Count - 1)
End If
End Sub
Private Sub DataGrid1_MouseUp(Button As Integer, Shift As Integer, x As Single, y As Single)
Dim M%, N%
If Shift > 0 And DataGrid1.SelBookmarks.Count = 0 Then
'Prompt user to utilize row selection column
MsgBox "You must use the far left column to select multiple records!"
ElseIf Shift = vbShiftMask Then
PrevBmk = CurrentBmk 'Save previous bookmark
CurrentBmk = DataGrid1.SelBookmarks(DataGrid1.SelBookmarks.Count - 1)
Debug.Print PrevBmk, CurrentBmk
If PrevBmk = 0 Then Exit Sub 'no previous bookmark
N% = CurrentBmk - PrevBmk 'Number of bookmarks to be made (+/-)
Select Case N% 'Set step direction for/next routine
Case Is < 0
M% = 1 'Step forward
Case Is = 0
Exit Sub 'Only 1 selected
Case Is > 0
M% = -1 'Step reverse
End Select
For N% = N% To -M% Step M%
DataGrid1.SelBookmarks.Add DataGrid1.GetBookmark(-N%)
Debug.Print DataGrid1.SelBookmarks(DataGrid1.SelBookmarks.Count - 1)
Next N%
End If
End Sub↧