I am building VB6.0 application , where is user swipes the card and form will kind of pops out with a Thank you message. Rest all are working fine , only thing is the form gets minimized, rather it should pop out.
I googled theirs Form.Activate but when I write it gives error.
Compile Error : Method or data member not found
I am new to VB so please excuse if any naive mistake.
Code:
Me.Hide
Form2.Show
Form2.Activate
I need Form2 to Pop out.
Thanks
I am able to achieve by
Private Sub Form_Load()
Dim lR As Long
lR = SetTopMostWindow(Form2.hwnd, True)
End Sub
and added a module
Option Explicit
Public Const SWP_NOMOVE = 2
Public Const SWP_NOSIZE = 1
Public Const FLAGS = SWP_NOMOVE Or SWP_NOSIZE
Public Const HWND_TOPMOST = -1
Public Const HWND_NOTOPMOST = -2
Declare Function SetWindowPos Lib "user32" _
(ByVal hwnd As Long, _
ByVal hWndInsertAfter As Long, _
ByVal x As Long, _
ByVal y As Long, _
ByVal cx As Long, _
ByVal cy As Long, _
ByVal wFlags As Long) As Long
Public Function SetTopMostWindow(hwnd As Long, Topmost As Boolean) _
As Long
If Topmost = True Then 'Make the window topmost
SetTopMostWindow = SetWindowPos(hwnd, HWND_TOPMOST, 0, 0, 0, _
0, FLAGS)
Else
SetTopMostWindow = SetWindowPos(hwnd, HWND_NOTOPMOST, 0, 0, _
0, 0, FLAGS)
SetTopMostWindow = False
End If
End Function</pre>
One can refer to https://support.microsoft.com/en-us/kb/184297
Thanks
Related
I want to disable the X button on a form depending on a condition.
So something like:
If Boolean Then
ControlBox = False
Else
ControlBox = True
End If
When I try and use this I get an error message saying visual basic does not support this function.
This would be done on the form load and the boolean would not change.
I've searched this forum but can't find an answer to suite me needs.
Thanks in advance.
It looks like you are trying to set the ControlBox property at run-time. As you saw, you cannot do so. However, with a little API magic you can accomplish this task:
Option Explicit
Private Declare Function GetWindowLong Lib "user32" Alias "GetWindowLongA" (ByVal hWnd As Long, ByVal nIndex As Long) As Long
Private Declare Function SetWindowLong Lib "user32" Alias "SetWindowLongA" (ByVal hWnd As Long, ByVal nIndex As Long, ByVal dwNewLong As Long) As Long
Private Declare Function SetWindowPos Lib "user32" (ByVal hWnd As Long, ByVal hWndInsertAfter As Long, ByVal X As Long, ByVal Y As Long, ByVal cx As Long, ByVal cy As Long, ByVal wFlags As Long) As Long
Private Const WS_SYSMENU = &H80000
Private Const GWL_STYLE = (-16)
Private Const SWP_FRAMECHANGED = &H20
Private Const SWP_NOMOVE = &H2
Private Const SWP_NOZORDER = &H4
Private Const SWP_NOSIZE = &H1
Private Property Let ControlBoxVisible(ByVal Value As Boolean)
Dim style As Long
style = GetWindowLong(Me.hWnd, GWL_STYLE)
style = IIf(Value, style Or WS_SYSMENU, style And Not WS_SYSMENU)
SetWindowLong Me.hWnd, GWL_STYLE, style
SetWindowPos Me.hWnd, 0, 0, 0, 0, 0, SWP_FRAMECHANGED Or SWP_NOMOVE Or SWP_NOZORDER Or SWP_NOSIZE
End Property
And then you would use it like this:
Private Sub Form_Load()
ControlBoxVisible = False
End Sub
Using API calls.
Take a look at Enable / Disable Forms Close Button
There is a zipped project file with source code.
I have been working on an Access Database where the user can click a button and the code will access the "webcam" present on the computer and then proceed to take a picture. The code works fine on regular laptops but I tried running it on a Laptop/Tablet hybrid (Latitude 5290 2-in-1 Laptop) and for whatever reason, the code does not access the camera at all.
I downloaded a third party app called Dorgem and tried to access the camera but got an error saying "Failed to connect to device." To me, it sounds like a permission issue but I made sure that camera permission is enabled in settings (https://www.tenforums.com/tutorials/71414-allow-deny-os-apps-access-camera-windows-10-a.html). I strongly believe that it is still a permission issue but I cannot find a way around it. I would really appreciate if I can get some input on how to solve this issue.
Here is the code I have been using in access.
Option Compare Database
Option Explicit
Public ImageLocation As String
Public AttachmentIndicator As String
Const WS_CHILD As Long = &H40000000
Const WS_VISIBLE As Long = &H10000000
Const WM_USER As Long = &H400
Const WM_CAP_START As Long = WM_USER
Const WM_CAP_DRIVER_CONNECT As Long = WM_CAP_START + 10
Const WM_CAP_DRIVER_DISCONNECT As Long = WM_CAP_START + 11
Const WM_CAP_SET_PREVIEW As Long = WM_CAP_START + 50
Const WM_CAP_SET_PREVIEWRATE As Long = WM_CAP_START + 52
Const WM_CAP_DLG_VIDEOFORMAT As Long = WM_CAP_START + 41
Const WM_CAP_FILE_SAVEDIB As Long = WM_CAP_START + 25
Private Declare PtrSafe Function capCreateCaptureWindow _
Lib "avicap32.dll" Alias "capCreateCaptureWindowA" _
(ByVal lpszWindowName As String, ByVal dwStyle As Long _
, ByVal X As Long, ByVal Y As Long, ByVal nWidth As Long _
, ByVal nHeight As Long, ByVal hwndParent As LongPtr _
, ByVal nID As Long) As Long
Private Declare PtrSafe Function SendMessage Lib "user32" _
Alias "SendMessageA" (ByVal hWnd As LongPtr, ByVal wMsg As Long _
, ByVal wParam As Long, ByRef lParam As Any) As Long
Dim hCap As LongPtr
Private Sub TakePictureButton_Click()
Dim sFileName As String
Call SendMessage(hCap, WM_CAP_SET_PREVIEW, CLng(False), 0&)
sFileName = "C:\Users\212764307\Documents\" & Forms!IRForm.IRNO & ".jpg"
ImageLocation = sFileName
Call SendMessage(hCap, WM_CAP_FILE_SAVEDIB, 0&, ByVal CStr(sFileName))
DoFinally:
Call SendMessage(hCap, WM_CAP_SET_PREVIEW, CLng(True), 0&)
End Sub
Private Sub Cmd3_Click()
Dim Temp As Long
Temp = SendMessage(hCap, WM_CAP_DRIVER_DISCONNECT, 0&, 0&)
DoCmd.Close
End Sub
Private Sub StartCameraButton_Click()
hCap = capCreateCaptureWindow("Take a Camera Shot", WS_CHILD Or WS_VISIBLE, 0, 0, PicWebCam.Width, PicWebCam.Height, PicWebCam.Form.hWnd, 0)
If hCap <> 0 Then
Call SendMessage(hCap, WM_CAP_DRIVER_CONNECT, 0, 0)
Call SendMessage(hCap, WM_CAP_SET_PREVIEWRATE, 66, 0&)
Call SendMessage(hCap, WM_CAP_SET_PREVIEW, CLng(True), 0&)
End If
End Sub
Private Sub Cmd2_Click()
Dim Temp As Long
Temp = SendMessage(hCap, WM_CAP_DLG_VIDEOFORMAT, 0&, 0&)
End Sub
Private Sub Form_Load()
StartCameraButton.Caption = "Start Camera"
cmd2.Caption = "&Format Cam"`enter code here`
cmd3.Caption = "&Close Cam"
TakePictureButton.Caption = "&Take Picture"
End Sub'
Use newest version of avicap32.dll (copy to windows\system32 and windows\sysWOW64 directories,also check camera drivers, there is always problem on them with avicap.
I need send mouse clicks from VBS. Like SendKeys. I have searched whole google, it seems there is no such function for VBS. Can you give me some solution?
Here is a routine to send a left or right click to a window (using relative references) in VBA for Excel. Similar to AppActivate, you just need the window title.
The arguments when you call the SendClick routine are:
Window Title (String)
Buttons (1 = Left, 2 = Right, -1 = Move mouse only; no click)
x (Relative position to window Left)
y (Relative position to window Top)
Enjoy!
'Declare mouse events
Public Declare Function SetCursorPos Lib "user32" (ByVal x As Long, ByVal y As Long) As Long
Public Declare Sub mouse_event Lib "user32" (ByVal dwFlags As Long, ByVal dx As Long, ByVal dy As Long, ByVal cButtons As Long, ByVal dwExtraInfo As Long)
Public Const MOUSEEVENTF_LEFTDOWN = &H2
Public Const MOUSEEVENTF_LEFTUP = &H4
Public Const MOUSEEVENTF_RIGHTDOWN As Long = &H8
Public Const MOUSEEVENTF_RIGHTUP As Long = &H10
'Declare sleep
Declare Sub Sleep Lib "kernel32" (ByVal dwMilliseconds As Long)
' Window location
Public Declare Function FindWindow Lib "user32" Alias "FindWindowA" (ByVal lpClassName As String, ByVal lpWindowName As String) As Long
Public Declare Function GetWindowRect Lib "user32" (ByVal hWnd As Long, lpRect As RECT) As Long
Type RECT
Left As Long
Top As Long
Right As Long
Bottom As Long
End Type
Public Function WindowHandle(ByVal sTitle As String) As Long
WindowHandle = FindWindow(vbNullString, sTitle)
End Function
Public Sub SendClick(sWnd As String, b As Integer, x As Long, y As Long)
Dim pWnd As Long, pRec As RECT
pWnd = WindowHandle(sWnd)
GetWindowRect pWnd, pRec
SetCursorPos pRec.Left + x, pRec.Top + y
Sleep 50
If b = 2 Then
mouse_event MOUSEEVENTF_RIGHTDOWN, 0, 0, 0, 0
Sleep 50
mouse_event MOUSEEVENTF_RIGHTUP, 0, 0, 0, 0
ElseIf b <> -1 Then
mouse_event MOUSEEVENTF_LEFTDOWN, 0, 0, 0, 0
Sleep 50
mouse_event MOUSEEVENTF_LEFTUP, 0, 0, 0, 0
End If
End Sub
It's not possible with VBScript alone. You'll need to use a third-party tool like nircmd. You can use its setcursor, setcursorwin, movecursor, and sendmouse commands to manipulate the mouse.
For example, here's how to move the cursor to a screen coordinate (measured from the top left) and perform a right-click:
With CreateObject("WScript.Shell")
.Run "nircmd setcursor 100 100", 0, True
.Run "nircmd sendmouse right click", 0, True
End With
See the documentation for parameter information.
Try
Dim x
set x=createobject("wscript.shell")
x.sendkeys"{CLICK LEFT,50,60}"
or
x.SendKeys("+{F10}") 'for a right click
If neither of those work for you I would suggest using something like Autoit or autohotkey, using AutoHotKey you could write a macro that does the clicking and then call the script from your VBScript.
VBS is a script, not an application; VBScripts can call other applications or Component Objects to access elements of the host environment, just like batch files; eg. FileSystemObject to manipulate files.
There isn't one provided for mouse, so to move mouse or send mouse clicks, you'd need to call some app or COM object to do it, or make one.
Some apps that can manipulate the mouse are MSWord & MSExcel (via WinAPI calls), NirCmd, AutoIt, AutoHotKey, etc
Here's a VBApp example that calls functions of the User Component: user32.dll:
(Notice how the arguments are formatted before being sent to the DLL. This is not possible in VBS or batch files since they can only pass Strings as args; some functions expect data types eg. Int32, window handles or object references)
Option Strict On
Option Explicit On
Option Infer On
Imports System.Runtime.InteropServices
Public Class Mousing
Private Declare Auto Sub mouse_event Lib "user32" (ByVal dwFlags As Int32, ByVal dx As Int32, ByVal dy As Int32, ByVal cButtons As Int32, ByVal dwExtraInfo As IntPtr)
Private Const MOUSEEVENTF_LEFTDOWN As Int32 = &H2
Private Const MOUSEEVENTF_LEFTUP As Int32 = &H4
Private Const MOUSEEVENTF_RIGHTDOWN As Long = &H8
Private Const MOUSEEVENTF_RIGHTUP As Long = &H10
<StructLayout(LayoutKind.Sequential)>
Private Structure RECT
Public Left As Integer
Public Top As Integer
Public Right As Integer
Public Bottom As Integer
End Structure
<DllImport("user32.dll")> _
Private Shared Function GetWindowRect(ByVal hWnd As IntPtr, ByRef lpRect As RECT) As Boolean
End Function
<DllImport("user32.dll", CharSet:=CharSet.Auto, EntryPoint:="FindWindow")> _
Private Shared Function FindWindow(ByVal lpClassName As String, ByVal lpWindowName As String) As IntPtr
End Function
<DllImport("user32.dll", CharSet:=CharSet.Ansi, SetLastError:=True, ExactSpelling:=True)> _
Private Shared Function SetForegroundWindow(ByVal hwnd As IntPtr) As <MarshalAs(UnmanagedType.Bool)> Boolean
End Function
Private Sub Button1_Click(sender As System.Object, e As System.EventArgs) Handles Button1.Click
' find the window
Dim hWnd As IntPtr = FindWindow(Nothing, "Some Window")
' check if window found
If hWnd.Equals(IntPtr.Zero) Then
MessageBox.Show("Window Not Found!", "Aborting", MessageBoxButtons.OK, MessageBoxIcon.Exclamation)
Return ' exit
Else
' bring the window to the foreground
SetForegroundWindow(hWnd)
' get the windows size and location
Dim r As New RECT
GetWindowRect(hWnd, r)
'Move the cursor to the windows location plus our offset (x + 50 , y + 100)
Windows.Forms.Cursor.Position = New System.Drawing.Point(r.Left + 50, r.Top + 100)
' To move relative to screen, just enter coordinates above without offsetting
' click the left mouse button at the current mouse position
mouse_event(MOUSEEVENTF_LEFTDOWN + MOUSEEVENTF_LEFTUP, 0, 0, 0, IntPtr.Zero)
End If
End Sub
End Class
The following is a VBScript calling AutoIt to move mouse & click:
Set oAutoIt = WScript.CreateObject("AutoItX.Control")
set oShell = CreateObject("WScript.Shell")
oAutoIt.MouseMove x,y,0
WScript.Sleep 500
oAutoIt.MouseClick($MOUSE_CLICK_PRIMARY)
References:
http://www.vbforums.com/showthread.php?672196-RESOLVED-SetCursorPos
http://www.ericphelps.com/batch/rundll/
https://www.dostips.com/forum/viewtopic.php?t=3931
https://support.microsoft.com/en-au/help/152969/visual-basic-procedure-to-get-set-cursor-position
https://microsoft.public.scripting.vbscript.narkive.com/ZO09Cxnz/moving-mouse-pointer-with-vbs-file
I'm trying to retrieve the text from an EDIT control using GetWindowText and GetWindowTextLength. The application retrieves the text from the window under the cursor and it works on all windows with a caption or text with the exception of the EDIT control. The EDIT control is the result window on the Windows XP Calculator, calc.exe.
Dim S As String
Dim L As Long
L = GetWindowTextLength(handle) + 1
Receiving string = GetWindowText(handle, S, L)
EDIT:
According to SPY++ the Edit class control does not receive the EM_GETSELTEXT or the WM_GETTEXT message.The code below retrieves the text from the Edit class control on the Windows XP calc.exe calculator every time that I press a button on my UI. It is not the method that I would have preferred to use, however, it accomplishes my task.
Const EM_SETSEL = &HB1
Const ES_READONLY = &H800
Const WM_COPY = &H301
Const EM_GETSELTEXT = &H43E
Const WM_GETTEXTLENGTH = &HE
Const WM_SETFOCUS As Long = &H7
Dim L As Long
L = SendMessage(EditHwnd, WM_GETTEXTLENGTH, 0&, 0)
SendMessage EditHwnd, WM_SETFOCUS, 0&, 0
SendMessage EditHwnd, EM_SETSEL, 0&, L
SendMessage EditHwnd, ES_READONLY, 0&, 0 ' read only = false
Clipboard.Clear
SendMessage EditHwnd, WM_COPY, 0&, 0
SendMessage EditHwnd, ES_READONLY, 1&, 0 ' read only = true
Receiving string = Clipboard.GetText
Clipboard.Clear
Private Declare Function FindWindow Lib "user32" Alias "FindWindowA" (ByVal lpClassName As String, ByVal lpWindowName As String) As Long
Private Declare Function GetWindowTextLength Lib "user32" Alias "GetWindowTextLengthA" (ByVal hwnd As Long) As Long
Private Declare Function GetWindowText Lib "user32" Alias "GetWindowTextA" (ByVal hwnd As Long, ByVal lpString As String, ByVal cch As Long) As Long
Function GetText(handle As Long) As String
Dim S As String, L As Integer, cch As Long
L = GetWindowTextLength(handle) + 1
S = String(L, 0)
GetText = Mid(S, 1, GetWindowText(handle, S, L))
End Function
Private Sub Form_Load()
Dim hw As Long
hw = Me.hwnd
MsgBox GetText(hw)
End Sub
But it will not work with controls like EDIT, as it is written in help. ;( In order to get the text of the child window (control), try to get a list of all windows using API EnumWindows/EnumThreadWindows/GetWindowThreadProcessId, to find the desired control.
What is the name of the class to EDIT You need? What is its width and height? I could write code specifically for the search for this control.
this code works fine in Windows XP (virtual machine)
Private Declare Function FindWindow Lib "user32.dll" Alias "FindWindowA" _
(ByVal lpClassName As String, ByVal lpWindowName As String) As Long
Private Declare Function FindWindowEx Lib "user32.dll" Alias "FindWindowExA" _
(ByVal hWnd1 As Long, ByVal hWnd2 As Long, ByVal lpsz1 As Any, ByVal lpsz2 As Any) As Long
Private Declare Function SendMessage Lib "user32.dll" Alias "SendMessageA" _
(ByVal hWnd As Long, ByVal wMsg As Long, ByVal wParam As Long, ByRef lParam As Any) As Long
Private Declare Function AttachThreadInput Lib "user32.dll" _
(ByVal idAttach As Long, ByVal idAttachTo As Long, ByVal fAttach As Long) As Long
Private Const WM_GETTEXT As Long = &HD&
Private Const WM_GETTEXTLENGTH As Long = &HE&
Function WindowText(ByVal hWnd As Long) As String
Dim ret As Long
ret = SendMessage(hWnd, WM_GETTEXTLENGTH, 0, ByVal 0&)
WindowText = String(ret, 0)
ret = SendMessage(hWnd, WM_GETTEXT, ret + 1, ByVal WindowText)
End Function
Private Sub Command1_Click()
Dim hCalc As Long, hEdit As Long
hCalc = FindWindow("SciCalc", vbNullString)
hEdit = FindWindowEx(hCalc, 0&, "Edit", vbNullString)
MsgBox WindowText(hEdit)
End Sub
I have used a code from the internet to show my webcam in a certain form, however, i dont know how to capture an image and save it automatically to my local disk drive via command button click. would anyone help me ASAP :))
here is my code for the form.
Option Explicit
Const ws_visible = &H10000000
Const ws_child = &H40000000
Const WM_USER = 1024
Const WM_CAP_EDIT_COPY = WM_USER + 30
Const wm_cap_driver_connect = WM_USER + 10
Const wm_cap_set_preview = WM_USER + 50
Const wm_cap_set_overlay = WM_USER + 51
Const WM_CAP_SET_PREVIEWRATE = WM_USER + 52
Const WM_CAP_SEQUENCE = WM_USER + 62
Const WM_CAP_SINGLE_FRAME_OPEN = WM_USER + 70
Const WM_CAP_SINGLE_FRAME_CLOSE = WM_USER + 71
Const WM_CAP_SINGLE_FRAME = WM_USER + 72
Const DRV_USER = &H4000
Const DVM_DIALOG = DRV_USER + 100
Const PREVIEWRATE = 30
Private Declare Function SendMessage Lib "user32" Alias "SendMessageA" (ByVal hWnd As Long, ByVal wMsg As Long, ByVal wParam As Long, ByVal lParam As Long) As Long
Private Declare Function capCreateCaptureWindow Lib "avicap32.dll" Alias "capCreateCaptureWindowA" (ByVal a As String, ByVal b As Long, ByVal c As Integer, ByVal d As Integer, ByVal e As Integer, ByVal f As Integer, ByVal g As Long, ByVal h As Integer) As Long
Dim hwndc As Long
Dim saveflag As Integer
Dim pictureindex As Integer
Dim filter1(-1 To 1, -1 To 1) As Single
Dim filter2(-1 To 1, -1 To 1) As Single
Dim temp As String
Private Sub Command2_Click()
Unload Me
Main.Show
End Sub
Private Sub Form_Load()
On Error GoTo handler:
hwndc = capCreateCaptureWindow("CaptureWindow", ws_child Or ws_visible, 0, 0, Pichwnd.Width, Pichwnd.Height, Pichwnd.hWnd, 0)
If (hwndc <> 0) Then
temp = SendMessage(hwndc, wm_cap_driver_connect, 0, 0)
temp = SendMessage(hwndc, wm_cap_set_preview, 1, 0)
temp = SendMessage(hwndc, WM_CAP_SET_PREVIEWRATE, PREVIEWRATE, 0)
temp = SendMessage(Me.hWnd, WM_CAP_EDIT_COPY, 1, 0)
Picture1.Picture = Clipboard.GetData
Else
MsgBox "Unable to capture video.", vbCritical
End If
Exit Sub
handler:
End
End Sub
Private Sub Form_Initialize()
If Me.WindowState <> vbMaximized Then
Me.WindowState = vbMaximized
Else
Me.WindowState = vbNormal
End If
End Sub
my code might be too long but i just learned some vb6 via tutorials as i need to make a GUI to my Grad project. Finally thanks for help
Send the WM_CAP_FILE_SAVEDIB message to your hwndc with the filename to save to.
A better option is to handle the video callbacks yourself with WM_CAP_SET_CALLBACK_FRAME message or the capVideoStreamCallback callback function.
Also, take a look at the examples at http://www.shrinkwrapvb.com/videocap.htm.
Note that VfW capture is very outdated and should be replaced with Directshow (but is very difficult to do properly in VB6)