Finding out if a one of several forms are open in MS Access - vba

I need to iterate through a list of forms to see if they are open and then do something with them if they are. The following works:
Public Sub isloadedtester()
Dim iForm As Variant
For Each iForm In CurrentProject.AllForms
Debug.Print iForm.name & ": " & CurrentProject.AllForms(iForm.name).IsLoaded
Next
End Sub
but it loops through all forms. So I thought the following should work to loop through only the forms I care about:
Public Sub isloadedtester2()
Dim iForm As Variant
Dim list
list = Array(Form_some, Form_another)
For Each iForm In list
Debug.Print iForm.name
Debug.Print ".isloaded: " & CurrentProject.AllForms(iForm.name).IsLoaded
Debug.Print "direct: " & SysCmd(acSysCmdGetObjectState, acForm, iForm.name)
Debug.Print "by fn: " & IsLoaded(iForm.name)
Next
End Sub
Public Function IsLoaded(FormName As String, Optional aType As AcObjectType = acForm)
IsLoaded = (SysCmd(acSysCmdGetObjectState, aType, FormName) <> 0)
End Function
However, the second version always sees forms as loaded, no matter which of several ways to read loaded state I use:
.isloaded: True
direct: 1
by fn: True
It's almost like assigning a form to an array makes VBA load the form.
Should I use something other than an array for this? I realize I could do this as an array of names that I also loop through to see if one fits, but that seems awkward, so I first wanted to see if I am just doing something slightly different than it needs to be.

If you only want open forms, then use the Forms collection. It includes only open forms
Dim intFrm As Integer
If Forms.Count > 0 Then
For intFrm = 0 To Forms.Count - 1
'Debug.Print Forms(intFrm).NAME
If Forms(intFrm).Name IsInYourList Then
DoSomething
End IF
Next intFrm
End If

If you have a list of form names, you can do it the "old-fashioned" way with SysCmd
Public Function IsLoaded(FName As String, Optional aType As AcObjectType = acForm)
IsLoaded = (SysCmd(acSysCmdGetObjectState, aType, FName) <> 0)
End Function
and
For Each iForm In list
Debug.Print iForm.Name & ": " & IsLoaded(iForm.Name)
Next

Related

Changing text in a contentcontrol is very slow

I have a big table in ms-word that contains 85 contentcontrols (combo boxes). I want to change the content using a vba loop (see below). It takes longer than one minute for it to complete...
Are there other options?
Private Sub Btn_Clear1_Click()
Dim a
Dim c As ContentControl
a = FindTable(ActiveDocument.Name, "myTableName")(1) 'returns an array(Long) with number of table found
For Each c In ActiveDocument.Tables(a).Range.ContentControls
c.Range.text = "MY CHANGED TEXT"
Next c
End Sub
Thanks in advance for any hint!
Here, turning off screenupdating reduces the time from about 6 seconds to less than 1 second. e.g.
On Error Goto turnscreenon
Application.Screenupdating = False
For Each c In ActiveDocument.Tables(a).Range.ContentControls
c.Range.text = "MY CHANGED TEXT"
Next c
turnscreenon:
Application.Screenupdating = True
That may only work on the Windows version of Word.
If you know exactly how many combo boxes there are going to be, you could consider creating a custom xml part containing an array of XML Elements to contain the values. Map each content control to one of those elements. Then instead of writing the values to the content control ranges, write them to the XML Part and let Word do the work. That works almost instantaneously here.
e.g. in a simple scenario where you just have those 85 content controls in the table, you could set up the Custom XML Part like this (I leave you to write any code that you need to delete old versions). You should only need to run this once.
Sub createCxpAndLink()
' You should choose your own Uri
Const myNamespaceUri As String = "mycbcs"
Dim a
Dim i As Long
Dim s As String
Dim cxp As Office.CustomXMLPart
With ActiveDocument
a = FindTable(.Name, "myTableName")(1)
s = ""
s = s & "<?xml version='1.0' encoding='UTF-8'?>" & vbCrLf
s = s & "<cbcs xmlns='" & myNamespaceUri & "'>" & vbCrLf
For i = 1 To .Tables(a).Range.ContentControls.Count
s = s & " <cbc/>" & vbCrLf
Next
s = s & "</cbcs>"
Set cxp = .CustomXMLParts.Add(s)
With .Tables(a).Range.ContentControls
For i = 1 To .Count
.Item(i).XMLMapping.SetMapping "/x:cbcs[1]/x:cbc[" & Trim(CStr(i)) & "]", "xmlns:x='" & myNamespaceUri & "'", cxp
Next
End With
Set cxp = Nothing
End With
End Sub
Then to update the contents you need something like this
Sub testsetxml()
Const myNamespaceUri As String = "mycbcs"
Dim i As Long
'our start time...
Debug.Print Now
With ActiveDocument.CustomXMLParts.SelectByNamespace(myNamespaceUri)(1)
For i = 1 To 85
.SelectNodes("/ns0:cbcs[1]/ns0:cbc[" & Trim(CStr(i)) & "]")(1).Text = "my changed text "
' or if you want to put different texts in different controls, you can test using e.g.
.SelectNodes("/ns0:cbcs[1]/ns0:cbc[" & Trim(CStr(i)) & "]")(1).Text = "my changed text " & Cstr(i)
Next
End With
'our end time...
Debug.Print Now
End Sub
(NB you cannot do it by mapping all the controls to a single XML element because then all the dropdowns will all be updated to the same value whenever you change the value of one of them.)
Apologies for any typos - I've changed the code to be more in line with what you have already and have not tested the changes.

How to refill combobox with similar records based on what user types

I'm currently building a form where a user can look up a tool based on the description or part number.
I want user to be able to type any letters into the combobox that I have tied to a query listing all my tools and the combobox will repopulate itself with the tools most similar to what is present in their combobox. For example, if they start typing wre, then tools that have similar characters will start appearing in the combobox such as wrench, torque wrench, power wrench, etc.
I've tried looking around for other people's solutions to this but either I didn't fully comprehend the existing solution (I'm fairly new to Access) or it wasn't what I was looking for. I've seen that people suggested using a listbox instead but I really don't want to go down that route.
I was thinking about using what the user types in the combobox and my VBA code will pick up the "change event" and requery the combobox on the fly by using their input as the like criteria for the new query.
Is this a possible route? Will it be slower? Is there a better route?
I'm hoping someone can show some examples on how to achieve what I'm looking for.
The search as you type feature is very useful! With a textbox and a listbox, you can setup a dynamic search tool that will filter a list for approximate matches as you type. The textbox has four events associated with it, as seen here.
The code behind the form looks like this. Pay attention to the part in bold. This is where we create a string of SQL commands, and utilize the SQL Like operator, to get dynamic matches as we type. Pay attention to the text in bold below.
Option Compare Database
Option Explicit On
Private blnSpace As Boolean 'INCLUDE THIS LINE ON YOUR FORM
Private Sub btnClearFilter_Click()
'CODE FOR THE RED "X" BUTTON TO CLEAR THE FILTER AND SHOW ALL
On Error Resume Next
Me.txtSearch.Value = ""
txtSearch_Change()
End Sub
Private Sub txtSearch_Change()
'CODE THAT HANDLES WHAT HAPPENS WHEN THE USER TYPES IN THE SEARCH BOX
Dim strFullList As String
Dim strFilteredList As String
If blnSpace = False Then
Me.Refresh 'refresh to make sure the text box changes are actually available to use
'specify the default/full rowsource for the control
strFullList = "SELECT RecordID, First, Last FROM tblNames ORDER BY First;"
'specify the way you want the rowsource to be filtered based on the user's entry
strFilteredList = "SELECT RecordID, First, Last FROM tblNames WHERE [First] LIKE ""*" & Me.txtSearch.Value &
"*"" OR [Last] LIKE ""*" & Me.txtSearch.Value & "*"" ORDER BY [First]"
'run the search
fLiveSearch Me.txtSearch, Me.lstItems, strFullList, strFilteredList, Me.txtCount
End If
End Sub
Private Sub txtSearch_KeyPress(KeyAscii As Integer)
'NECESSARY TO IDENTIFY IF THE USER IS HITTING THE SPACEBAR
'IN WHICH CASE WE WANT TO IGNORE THE INPUT
On Error GoTo err_handle
If KeyAscii = 32 Then
blnSpace = True
Else
blnSpace = False
End If
Exit Sub
err_handle:
Select Case Err.Number
Case Else
MsgBox "An unexpected error has occurred: " & vbCrLf & Err.Description &
vbCrLf & "Error " & Err.Number & "(" & Erl() & ")"
End Select
End Sub
Private Sub txtSearch_GotFocus()
' USED TO REMOVE THE PROMPT IF THE CONTROL GETS FOCUS
On Error Resume Next
If Me.txtSearch.Value = "(type to search)" Then
Me.txtSearch.Value = ""
End If
End Sub
Private Sub txtSearch_LostFocus()
' USED TO ADD THE PROMPT BACK IN IF THE CONTROL LOSES FOCUS
On Error Resume Next
If Me.txtSearch.Value = "" Then
Me.txtSearch.Value = "(type to search)"
End If
End Sub
Finally, in a regular module, you will need this script.
Option Compare Database
Option Explicit On
'************* Code Start **************
' This code was originally written by OpenGate Software
' It is not to be altered or distributed,
' except as part of an application.
' You are free to use it in any application,
' provided the copyright notice is left unchanged.
' OpenGate Software http://www.opengatesw.net
Function fLiveSearch(ctlSearchBox As TextBox, ctlFilter As Control,
strFullSQL As String, strFilteredSQL As String, Optional ctlCountLabel As Control)
Const iSensitivity = 1 'Set to the number of characters the user must enter before the search starts
Const blnEmptyOnNoMatch = True 'Set to true if you want nothing to appear if nothing matches their search
On Error GoTo err_handle
'restore the cursor to where they left off
ctlSearchBox.SetFocus
ctlSearchBox.SelStart = Len(ctlSearchBox.Value) + 1
If ctlSearchBox.Value <> "" Then
'Only fire if they've input more than two characters (otherwise it's wasteful)
If Len(ctlSearchBox.Value) > iSensitivity Then
ctlFilter.RowSource = strFilteredSQL
If ctlFilter.ListCount > 0 Then
ctlSearchBox.SetFocus
ctlSearchBox.SelStart = Len(ctlSearchBox.Value) + 1
Else
If blnEmptyOnNoMatch = True Then
ctlFilter.RowSource = ""
Else
ctlFilter.RowSource = strFullSQL
End If
End If
Else
ctlFilter.RowSource = strFullSQL
End If
Else
ctlFilter.RowSource = strFullSQL
End If
'if there is a count label, then update it
If IsMissing(ctlCountLabel) = False Then
ctlCountLabel.Caption = "Displaying " & Format(ctlFilter.ListCount - 1, "#,##0") & " records"
End If
Exit Function
err_handle:
Select Case Err.Number
Case 91 'no ctlCountLabel
'exit
Case 94 'null string
'exit
Case Else
MsgBox "An unexpected error has occurred: " & vbCrLf & Err.Description &
vbCrLf & "Error " & Err.Number & vbCrLf & "Line: " & Erl()
End Select
End Function
The code comes from this link:
http://www.opengatesw.net/ms-access-tutorials/Access-Articles/Search-As-You-Type-Access.html

Highlight field background in continuous form

I have an Access continuous form. I would like to change the forecolor of a specific record's field.
I have the field to highlight from the FieldModified field. So for example FieldModified = "Converted". Converted being a field on my form.
I would like to change the color of the "Converted" field, and do this for each record in the form.
I thought this code would work, but I get an error on Me.[FieldModified].ForeColor. And I need to do this for each record in the form.
Code:
Private Sub Form_Load()
Dim fldName As String
fldName = Me.FieldModified.value
If (Not IsNull(fldName)) Then
Me.[fldName].ForeColor = vbRed '<--doesn't recognize fldName value
End If
End Sub
Updated code but it gives me an error 438 saying object doesn't support this property or method. But the form does highlight fields on the form but it highlights more then the one field "fldName"
Private Sub Form_Load()
Dim rstForm As String
Dim fldName As String
Set rstForm = Me.ChangedData.Form.Recordset
Do While Not rstForm.EOF
fldName = Me.FieldModified.value
If (Not IsNull(fldName)) Then
Me.Controls(fldName).ForeColor = vbRed '<--doesn't recognize fldName value
End If
rstForm.MoveNext
Loop
End Sub
You set the default format for the control. Every copy of the control in the continuous form uses this format. To format by a condition (fldName = Me.FieldModified.value) you need Condtional Formatting as Andre told you or use the detail-sections paint event (see update on bottom)
In conditional format wizard, you can create a condtion withExpression Isand[Converted].Name = [FieldModified]for each control of the form that should be highlighted, if its name matchesFiledModified. In Ms Access expressions you can't useMe, just omit it .
You can use VBA to format all controls with FormatConditions by code. If you want to modify an existing condition use.Modifyinstead of.Add
Private Sub Form_Load()
Dim ctl As Access.Control
For Each ctl In Me.Controls ' loop through all controls of form
On Error Resume Next ' Not all controls can have conditional format (e.g. labels). To save the check of control type, we ignore errors here
ctl.FormatConditions.Add(acExpression, , ctl.Name & ".Name=[FieldModified]").BackColor = vbRed 'add o format condition to control if possible, else an error is raised but ignored
If Err.Number Then 'show errors
Debug.Print "Error: " & Err.Number & " - " & Err.description & " in Control: " & ctl.Name & " Type is " & TypeName(ctl)
Err.Clear 'reset error to catch next
Else
Debug.Print "FormatCondition added to Control: " & ctl.Name & " Type is " & TypeName(ctl)
End If
Next ctl
On Error GoTo 0 ' turn on errors again, maybe add an error handler (On Error Goto MyErrHandler)
End Sub
Update:
You can use theDetails_Paintevent of the form to format same control different per record. This enables conditional format for controls withoutFormatConditionsproperty like labels, buttons.
Private Sub Detail_Paint()
Dim c As Access.Control
For Each c In Me.Detail.Controls
If c.Name = Me.FieldModified.Value Then
c.ForeColor = vbRed
Else
c.ForeColor = vbBlack
End If
Next
End Sub
You can't use a String variable like this, fldName is an identifier holding a String value.. not an identifier - in Me.ControlName, both Me and ControlName are identifiers.
But not all hope is lost! You can use a String to pull a Control object from a form!
All form controls should exist in the form's Controls collection, keyed by name:
Me.Controls(fldName).ForeColor = vbRed

check if textbox exists vba (using name)

I am using Ms-Access and I created a userform which has a number of Textboxes on it. The boxes are named: Box1, Box2, Box3 ...
I need to loop through all boxes, but I don't know which is the last one. To avoid looping through all userform controls I thought of trying the following:
For i =1 To 20
If Me.Controls("Box" & i).value = MyCondition Then
'do stuff
End If
Next i
This errors at Box6, which is the first box not found. Is there a way to capture this error and exit the loop when it happens.
I know I could use On Error but I 'd rather capture this specific instance with code instead.
Thanks,
George
A Controls collection is a simplified collection of controls (obviously) and share a same order as a placement order of controls.
First of all, even a creatable collection object lacks methods such as Exists or Contains , hence you need a function with error handling to checking/pulling widget from a collection.
Public Function ExistsWidget(ByVal Name As String) As Boolean
On Error Resume Next
ExistsWidget = Not Me.Controls(Name) Is Nothing
On Error GoTo 0
End Function
If you really doesnt like "ask forgiveness not permission" option you can pull entire ordered collection of your textboxes (and/or check existance by name in another loop with similar logic).
Public Function PullBoxes() As Collection
Dim Control As MSForms.Control
Set PullBoxes = New Collection
For Each Control In Me.Controls
If TypeOf Control Is MSForms.TextBox And _
Left(Control.Name, 3) = "Box" Then
Call PullBoxes.Add(Control)
End If
Next
End Function
Since names of widgets are unique - you can return a Dictionary from that function with (Control.Name, Control) pairs inside and able to check existance of widget by name properly w/o an error suppression.
There's a good guide to Dictionary if it's a new information for you.
Anyway, no matter what object you choose, if user (or code) is unable to create more of thoose textboxes - you can convert this Function above to a Static Property Get or just to a Property Get with Static collection inside, so you iterate over all controls only once (e.g. on UserForm_Initialize event)!
Public Property Get Boxes() As Collection
Static PreservedBoxes As Collection
'There's no loop, but call to PullBoxes to reduce duplicate code in answer
If PreservedBoxes Is Nothing Then _
Set PreservedBoxes = PullBoxes
Set Boxes = PreservedBoxes
End Property
After all, the last created TextBox with name Box* will be:
Public Function LastCreatedBox() As MSForms.TextBox
Dim Boxes As Collection
Set Boxes = PullBoxes
With Boxes
If .Count <> 0 Then _
Set LastCreatedBox = Boxes(.Count)
End With
End Function
I think that now things are clearer to you! Cheers!
Note: All code are definitely a bunch of methods/properties of your form, hence all stuff should be placed inside of form module.
Long story short - you cannot do what you want with VBA.
However, there is a good way to go around it - make a boolean formula, that checks whether the object exists, using the On Error. Thus, your code will not be spoiled with it.
Function ControlExists(ControlName As String, FormCheck As Form) As Boolean
Dim strTest As String
On Error Resume Next
strTest = FormCheck(ControlName).Name
ControlExists = (Err.Number = 0)
End Function
Taken from here:http://www.tek-tips.com/viewthread.cfm?qid=1029435
To see the whole code working, check it like this:
Option Explicit
Sub TestMe()
Dim i As Long
For i = 1 To 20
If fnBlnExists("Label" & i, UserForm1) Then
Debug.Print UserForm1.Controls(CStr("Label" & i)).Name & " EXISTS"
Else
Debug.Print "Does Not exist!"
End If
Next i
End Sub
Public Function fnBlnExists(ControlName As String, ByRef FormCheck As UserForm) As Boolean
Dim strTest As String
On Error Resume Next
strTest = FormCheck(ControlName).Name
fnBlnExists = (Err.Number = 0)
End Function
I would suggest testing the existence in another procedure per below: -
Private Sub Command1_Click()
Dim i As Long
i = 1
Do Until Not BoxExists(i)
If Me.Conrtols("Box" & i).Value = MyCondition Then
'Do stuff
End If
i = i + 1
Next
End Sub
Private Function BoxExists(ByVal LngID As Long) As Boolean
Dim Ctrl As Control
On Error GoTo ErrorHandle
Set Ctrl = Me.Controls("BoX" & LngID)
Set Ctrl = Nothing
BoxExists = True
Exit Function
ErrorHandle:
Err.Clear
End Function
In the above, BoxExists only returns true if the box does exists.
You have taken an incorrect approach here.
If you want to limit the loop, you can loop only in the section your controls reside e.g. Detail. You can use the ControlType property to limit controls to TextBox.
Dim ctl As Control
For Each ctl In Me.Detail.Controls
If ctl.ControlType = acTextBox Then
If ctl.Value = MyCondition Then
'do stuff
End If
End If
Next ctl
I believe the loop will be faster than checking if the control name exists through a helper function and an On Error Resume Next.
But this only a personal opinion.

Reference checkbox name/value in a subroutine

Is there a way to pass a checkbox value from a userform? I've seen it done when the checkbox is on the worksheet but I haven't been able to get it to work when it comes from my userform.
I have several repeating if statements and the only difference between them is the name of the checkbox. I'm sure there's a simple fix that I just haven't found yet. Any help is appreciated.
Edit: included code
If LockboxCheckBox.Value = True Then
If IsEmpty(wsInput.Cells(emptyRow, productCol)) Then
wsInput.Cells(emptyRow, productCol).Value = LockboxCheckBox.Caption
Else: wsInput.Cells(emptyRow, productCol).Value = wsInput.Cells(emptyRow, productCol).Value & ", " & LockboxCheckBox.Caption
End If
End If
I want to make this a small subroutine and need to pass the checkbox.value as well as the checkbox.caption to it when I call it.
The following code example demonstrates how to pass a Checkbox control on a UserForm to another procedure, get the checkbox's value and caption, and do something with them.
Note that I choose to pass the checkbox, rather than the value and caption as two parameters, as this will reduce the amount of code you need to type.
Private Sub btnOK_Click()
Dim chk As MSForms.CheckBox
Set chk = Me.CheckBox1
ProcessCheckBox chk
ProcessCheckBox Me.CheckBox2
End Sub
Sub ProcessCheckBox(chk As MSForms.CheckBox)
Dim chkVal As Boolean
Dim chkCap As String
chkVal = chk.value
chkCap = chk.Caption
If chkVal = True Then
Debug.Print chkCap & " is true"
Else
Debug.Print chkCap & " is false"
End If
End Sub