I am trying to set some images's visibility to false by using CallByName and a loop through the objects.
here is the code
Private Sub command1Click
dim theobj_str as string
dim ctr as integer
for ctr = 1 to 3
theobj_str = "Images" & ctr
CallByName theobj_str, "Visible", vbLet,False
end for
END SUB
It throws an error "TYPE MISMATCH" on "CallByName **theobj_str**..."
The CallByName takes an object as its first argument. I need to somehow convert the string "theobj_str" into an object. How can I do this ?
The CallByName works fine if I call it like : CallByName Images2, "Visible", vbLet,False
Thanks
If you don't need to use CallByName you could loop through the controls collection and check the type. If the type matches the control you want to hide then you can set it's visible property that way.
The code would look like this:
Private Sub Command_Click()
SetControlVisibility "Image", False
End Sub
Private Sub SetControlVisibility(ByVal controlType As String, ByVal visibleValue As Boolean)
Dim ctrl As Control
For Each ctrl In Me.Controls
If TypeName(ctrl) = controlType Then
ctrl.Visible = visibleValue
End If
Next
End Sub
Doing it this way will allow you to add more image controls to your form without having to remember to change your counts in the for loop.
Hope that helps.
Related
I have created a dialer in VB6 to dial a phone number. It has the following buttons: the digits 0-9, backspace, "Call", and "Disconnect". Now I want enter numbers in the form using the keypad part of the keyboard. In the text box, any key can be typed in using the keypad. But I only want the number pad to operate.
For that I checked ASCII values using the KeyPress event - seeing if the pressed key value lies in between 47 and 58. But along with the key values its ASCII values are also getting displayed in the text box.
One more thing - I have one MS Flex Grid on the form along with the dialer. So when the cursor is on the form, or if the mouse is clicked anywhere other than the text box, values don't display in the text box. So how do I always keep focus on the text box?
Dim val As Integer
Private Sub append(val As Integer)
Text1.Text = Text1.Text & val
End Sub
Private Sub Backspace_Click()
With Text1
'FOCUS TO THE TEXTBOX
.SetFocus
'PUT THE CURSOR AT THE END OF THE TEXT
.SelStart = Len(.Text)
'SEND THE KEY
SendKeys ("{BACKSPACE}")
'AND THATS IT :D
End With
End Sub
Private Sub key_0_Click()
val = 0
append val
End Sub
Private Sub key_1_Click()
val = 1
append val
End Sub
Private Sub key_2_Click()
val = 2
append val
End Sub
Private Sub key_3_Click()
val = 3
append val
End Sub
Private Sub key_4_Click()
val = 4
append val
End Sub
Private Sub key_5_Click()
val = 5
append val
End Sub
Private Sub key_6_Click()
val = 6
append val
End Sub
Private Sub key_7_Click()
val = 7
append val
End Sub
Private Sub key_8_Click()
val = 8
append val
End Sub
Private Sub key_9_Click()
val = 9
append val
End Sub
Private Sub Text1_KeyPress(KeyAscii As Integer)
If (KeyAscii > 47 And KeyAscii < 58) Then
val = KeyAscii
append val
Else
KeyAscii = 0
' Text1.Text = KeyAscii
End If
End Sub
'Private Sub Text1_LostFocus()
' Text1.SetFocus
'End Sub
You could set the KeyPreview property on the form to true.
When you have done that, put your code in the KeyPress of the form that was in the KeyPress of the Textbox, and set the text value of the textbox, or better still move the code into a function and set it from there, that way you won't need to duplicate your code if you need it in other places.
Have a look at this and see if it helps it is the KeyPreview from MSDN
Hi,
Sorry for the delay. To use the KeyPreview for the form give this a try:
Double click on the form in the project to open it
In the properties for the form find the KeyPreview Property and set it to true
Double click on the form to bring up the code window
Select the keypress event for the form, and add the following code, or something similar.
Private Sub Form_KeyPress(KeyAscii As Integer)
Text1.Text = Text1.Text & Chr$(NrOnly(KeyAscii))
End Sub
Use the function NrOnly that Hqrls has posted as that will allow only numbers which could help you with the validation. You won't need any code in the Text1_KeyPress, the form will now handle that for you.
Give it a try and let me know if you need any other information and I'll see what I can do.
[EDIT 29/05/2014]
Hi,
I've had a bit of a play around with the code and added some bits in which I think might help. Have a look at this and see if it make sense. If you copy it into your code then make sure you back up your original code just in case you need to get back to it.
This is the code if you keep your textbox
Option Explicit
Dim val As String
Dim m_blnTextHasFocus As Boolean 'Added this, so it knows wether the the textbox
'has the focus or not
'it is so the sendkeys doesn't get stuck in a
'loop with the key presses
Private Sub append(strIn As String)
'Changed the parameter from an int to a string, so we can use it in the key press events
Text1.Text = Text1.Text & strIn
End Sub
Private Sub Backspace_Click()
'Moved the code into it's own sub
DeleteAChar
End Sub
Private Sub Form_KeyPress(KeyAscii As Integer)
'Handle a key press if the textbox doesn't have the focus but ignore the keypress if it does
If Not m_blnTextHasFocus Then
If IsNumeric(Chr$(KeyAscii)) Then
append Chr$(KeyAscii)
ElseIf KeyAscii = vbKeyBack Then
DeleteAChar
End If
End If
End Sub
Private Sub key_0_Click()
val = "0"
append val
End Sub
Private Sub key_1_Click()
val = "1"
append val
End Sub
Private Sub key_2_Click()
val = "2"
append val
End Sub
Private Sub key_3_Click()
val = "3"
append val
End Sub
Private Sub key_4_Click()
val = "4"
append val
End Sub
Private Sub key_5_Click()
val = "5"
append val
End Sub
Private Sub key_6_Click()
val = "6"
append val
End Sub
Private Sub key_7_Click()
val = "7"
append val
End Sub
Private Sub key_8_Click()
val = "8"
append val
End Sub
Private Sub key_9_Click()
val = "9"
append val
End Sub
Private Sub Text1_GotFocus()
m_blnTextHasFocus = True
End Sub
Private Sub Text1_KeyPress(KeyAscii As Integer)
'Check the keyascii value and ignore it if it isn't numeric or backspace
If Not IsNumeric(Chr$(KeyAscii)) And KeyAscii <> vbKeyBack Then
KeyAscii = 0
End If
End Sub
Private Sub DeleteAChar()
With Text1
'FOCUS TO THE TEXTBOX
.SetFocus
'PUT THE CURSOR AT THE END OF THE TEXT
.SelStart = Len(.Text)
'SEND THE KEY
SendKeys ("{BACKSPACE}")
'AND THATS IT :D
End With
End Sub
Private Sub Text1_LostFocus()
m_blnTextHasFocus = False
End Sub
If you don't need to keep the textbox then you could replace it with a label and have a try with that. It would remove the need to keep track of if the textbox has got the focus or not. Have a go with this and see if it helps any. The only other thing is to make sure KeyPreview is turned on for the form or the keypress code will only work for the form if it has the focus.
Is the textbox the only control you want to have the focus ?
In that case you can use the following code:
Private Sub Text1_LostFocus()
Text1.SetFocus
End Sub
If there are any other controls you want to be able to have the focus as well, then you can use Text1.SetFocus in the _GotFocus() event of the controls which you do not want to have the focus
Another possible solution would be to use the _KeyPress() event of the other controls as well, and convert your current Text1_KeyPress() event to a general function which can be called by the _KeyPress() event of the other controls .. make sure though that you send the output of this general function to the correct textbox
If you post the relevant parts of your code we might be able to give a more specific answer
[EDIT]
for the answer to your original question, go with the answer of lardymonkey using keypreview on the form
an example function for allowed only numeric keys and the backspace:
Private Sub Text1_KeyPress(KeyAscii As Integer)
KeyAscii = NrOnly(KeyAscii)
End Sub
Private Function NrOnly(intAscii As Integer) As Integer
Dim intReturn As Integer
intReturn = intAscii
Select Case intAscii
Case vbKeyBack
Case vbKey0 To vbKey9
Case Else
intReturn = 0
End Select
NrOnly = intReturn
End Function
I have developed a custom MsgBox that works fine in almost every way. The only problem is that when the MsgBox closes the parent form runs the Form_Activate code. A normal MsgBox does not run that code (again).
I know i could add a boolean variable to Form_Activate to check if it has fired already, but that's not the best solution when you have a dozen forms.
So, is there a way to not run Form_Activate after closing my custom MsgBox? Does the MsgBox form need to be of some special type or something? I tried all BorderStyles but that doesn't make any difference.
Are you using another form to make custom MsgBox?
You shouldn't use directly other form to show a custom messagebox.
You should create an Activex control, and Activate event won't fire again when the MsgBox is closed.
Within the control you can use a form if you want it. (Probably just have to place your code inside an ActiveX control project and use it in your forms)
I use it that way.
This is a custom MsgBox example using Activex Control, with a test form too.
http://www.codeguru.com/code/legacy/vb_othctrl/2166_CustomMsgBox.zip
I created a Class for a Custom MsgBox.
Public Class CustomMsgBox
'Creates the Main form
Dim Main As New Form
'Creates the buttons
Dim Btn1, Btn2, Btn3 As New Button
'Creates the label
Dim Lbl As New Label
'Creates the Output variable
Dim Output As Integer = 0
Private Sub Load()
'Btn1 properties
Btn1.Location = New Point(168, 69)
Btn1.AutoSize = True
Btn1.AutoSizeMode = AutoSizeMode.GrowOnly
'Btn2 properties
Btn2.Location = New Point(87, 69)
Btn1.AutoSize = True
Btn1.AutoSizeMode = AutoSizeMode.GrowOnly
'Btn3 properties
Btn3.Location = New Point(6, 69)
Btn1.AutoSize = True
Btn1.AutoSizeMode = AutoSizeMode.GrowOnly
'Lbl properties
Lbl.Location = New Point(12, 19)
Lbl.AutoSize = True
Lbl.AutoEllipsis = True
'Main form properties
Main.Size = New Size(211, 129)
Main.AutoSize = True
Main.AutoSizeMode = AutoSizeMode.GrowOnly
Main.ShowIcon = False
Main.Controls.Add(Btn1)
Main.Controls.Add(Btn2)
Main.Controls.Add(Btn3)
Main.Controls.Add(Lbl)
'Adds Handlers to the buttons
AddHandler Btn1.Click, AddressOf btn1_Click
AddHandler Btn2.Click, AddressOf btn2_Click
AddHandler Btn3.Click, AddressOf btn3_Click
End Sub
Function CstMsgBox(ByRef Msg As String, ByRef Title As String, ByRef B1 As String, Optional ByRef B2 As String = Nothing, Optional ByRef B3 As String = Nothing) As Integer
'Runs the Load() Sub
Load()
'Sets the values
Lbl.Text = Msg
Btn1.Text = B1
Btn2.Text = B2
Btn3.Text = B3
Main.Text = Title
'Checks if there is a value set to Btn2 and Btn3
If Btn2.Text = Nothing Then
Btn2.Hide()
End If
If Btn3.Text = Nothing Then
Btn3.Hide()
End If
'Shows the MsgBox
Main.Show()
'Waits until a button is pressed
Do Until Output <> 0
Application.DoEvents()
Loop
'Closes the MsgBox
Main.Close()
Return Output
End Function
Private Sub btn1_Click(ByVal sender As Object, ByVal e As EventArgs)
'Sets the Output value to 1
Output = 1
End Sub
Private Sub btn2_Click(ByVal sender As Object, ByVal e As EventArgs)
'Sets the Output value to 2
Output = 2
End Sub
Private Sub btn3_Click(ByVal sender As Object, ByVal e As EventArgs)
'Sets the Output value to 3
Output = 3
End Sub
End Class
You can use it by typing this:
Dim CMB As New CustomMsgBox
CCMB.CstMsgBox('MSG, 'TITLE, 'BUTTON1, 'Optional: BUTTON2, 'Optional: BUTTON3)
OR
Dim CMB As New CustomMsgBox
Select Case CMB.CstMsgBox('MSG, 'TITLE, 'BUTTON1, 'Optional: BUTTON2, 'Optional: BUTTON3)
Case 1
'Code to execute when button1 is pressed
Case 2
'Code to execute when button2 is pressed
Case 3
'Code to execute when button3 is pressed
End Select
Sorry to ask such a dumb question.. but for the life of me i cant get it.. i have searched EVERYWHERE... This is a Re-Creation of my code that gives the same error. This is the most basic example i could re-create.
I dont understand why i have to declare a Label ?? (or an object)
What I am trying to accomplish is use my main form to call all the modules.
This is the FORM
'frmMain.frm
Option Explicit
Public Sub btnOpen_Click()
GetNum
End Sub
This is the MODULE
'modGet.bas
Option Explicit
Public Sub GetNum()
Dim a As String
Dim b As String
a = "hello"
b = "world"
-> Label1.Caption = a 'ERROR, Compile Error, Variable not Defined. (vb6)
Label2.Caption = b
End Sub
YES, i have a form, with a Button named 'btnOpen', i have 2 Labels named 'Label1' & 'Label2'
If i ADD..
Dim Label1 As Object 'in MODULE
i get a different error..
ERROR '91' Object Variable or With block variable not set
IF I put everything in 1 FORM, it works..(but i want to use separate modules)
I Commented out 'OPTION EXPLICIT' ... same error.
In another Test, i got the error for a TextBox..
TextBox1.Text = x
Once i get the answer for this, i can apply it for everything... I'm sure it's simple too and imma feel stupid. :-(
One of my Main Things is Querying WMI, and i get the ERROR '91' for the Label (This is in a For Each Loop) .. But its the same error, its like its makin me Declare Objects..(using Modules)
Label1.Caption = objItem.Antecedent
If Someone Could PLEASE Help me...
Use
form1.label1.caption = a
But make sure form1 is loaded
You get the error because Label1 and Label2, and your other controls for that matter do not exist in the scope of modGet.bas. They can only be referenced (the properties accessed or set), from with the form. The different error you get when you add Dim Label1 As Object is caused because an you defined Label1 as an Object, not as a Label, and an object does not have a Caption property. Unless you have a good reason for putting the GetNum sub in a .bas module move it into the form and it should work.
I modified the second example. It will modify the strings passed into it in a way that when execution passes back to the form you can assign the strings to your textboxes. I am against modifying controls on a form from another module because it goes against the idea of encapsulation.
'modGet.bas
Option Explicit
Public Function GetHello() As String
Dim strHello As String
strHello = "Hello"
GetHello = strHello
End Function
'frmMain.frm
'Option Explicit
Public Sub btnOpen_Click()
Label1.Caption = GetHello()
End Sub
Something a little different.
'MyModule.bas
Public Sub HelloWorld ByRef Value1 As String, ByVal Value2 As String)
On Error GoTo errHelloWorld
Value1 = "Hello"
Value2 = "World"
Exit Sub
errHelloWorld:
' deal with the error here
End Sub
'frmMain.frm
Option Explicit
Private Sub frmMain_Load()
Dim strText1 As String
Dim strText2 As String
HelloWorld(strText1, strText2)
Text1.Text = strText1
Text2.Text = strText2
End Sub
I also added basic error handling in the second example
I am just novice and I tried to make a simple program in Visual Basic 6. The code is almost equivalent to that in the textbook. It was meant to be a kind of a paint program. Surprisingly, it couldn't be compiled with the error given in the title of this question.
This is the code:
Option Explicit
Dim Col As Long
Private Sub Form_Load()
AutoRedraw = True
BackColor = vbWhite
Col = vbBlack
DrawWidth = 3
End Sub
Private Sub Command1_Click()
CommonDialog1.ShowOpen
Form1.Picture = LoadPicture(CommonDialog1.FileName)
End Sub
Private Sub Command2_Click()
CommonDialog1.ShowSave
SavePicture Image, CommonDialog1.FileName
End Sub
Private Sub Command3_Click()
CommonDialog1.ShowColor
Col = CommonDialog1.Color
End Sub
Private Sub Form_MouseMove(Button As Integer, Shift As Integer, X As Single, Y As Single)
PSet (X, Y), Col
End Sub
Private Sub Toolbar1_ButtonClick(ByVal Button As MSComctlLib.Button)
Select Case Button.Key
Case "Line1"
DrawWidth = 3
Case "Line2"
DrawWidth = 20
End Select
End Sub
The application crashes on the following line:
Private Sub Toolbar1_ButtonClick(ByVal Button As MSComctlLib.Button)
With the error:
procedure declaration does not match description of event or procedure
having the same name
The problem is here:
Private Sub Toolbar1_ButtonClick(ByVal Button As MSComctlLib.Button)
Ok, since you are coding in VB6, you get to learn some of the tricks in the VB6 playbook. Temporarily rename the method to something else like qqToolbar_ButtonClick, then go to the designer and click the button in the toolbar to regenerate the event in the code.
In the event that the signature has been mistyped, it will regenerate from the designer correctly and you might see the issue.
Another check is to see if the ToolBar1 was added to a control array? In that case, the method signature needs to look like this:
Private Sub Toolbar1_ButtonClick(ByVal Index as Integer, ByVal Button As MSComctlLib.Button)
I hope one of these helps solve the issue for you.
I'd like to be able to cut/copy a string like "<strong>{0}</strong>" for example.
I'd like to then select some code such as "Hello, World" and then invoke a macro which will result in "<strong>Hello, World</strong>".
How could you do this?
Update: WHY do I want to do this?
I could just make a macro or shortcut to add something specific like a <strong> tag to a selection. However, my idea to create any sort of "surround with" paste behavior on the fly.
Fairly often, I paste in a list of fields or properties. So from somewhere else I get
PersonID
FirstName
LastName
And just as an example, I know I want to set those up as
FieldName = dataRow("FieldName").Value
With my magic macro, I could select the following and press CTRL+C to get it in my clipboard:
{0} = dataRow("{0}").Value
Then all I have to do is go line by line and apply my magic paste.
Fun little project.
Option Strict Off
Option Explicit Off
Imports System
Imports EnvDTE
Imports EnvDTE80
Imports EnvDTE90
Imports System.Diagnostics
Public Module StringFormatModule
Private clipText As String
Public Property ClipboardText() As String
Get
RunThread(AddressOf GetClipboardText)
Return clipText
End Get
Set(ByVal value As String)
clipText = value
RunThread(AddressOf CopyToClipboard)
End Set
End Property
Private Function RunThread(ByVal fct As Threading.ThreadStart)
Dim thread As New Threading.Thread(fct)
thread.ApartmentState = Threading.ApartmentState.STA
thread.Start()
thread.Join()
End Function
Private Sub GetClipboardText()
clipText = My.Computer.Clipboard.GetText()
End Sub
Private Sub CopyToClipboard()
My.Computer.Clipboard.SetText(clipText)
End Sub
Sub FormatSelectedTextWithCopiedText()
Dim formatString As String
formatString = ClipboardText
Dim token As String
Dim selectedText As TextSelection
selectedText = DTE.ActiveDocument.Selection
token = selectedText.Text
selectedText.Text = String.Format(formatString, token)
End Sub
End Module
I borrowed the clipboard code from here.
This does work. I tested it on a text file, copy your formatstring into the clipboard (ctrl-c), highlight the text you want to format, and then run the macro (i just doubleclicked it from the macro explorer but you could make a keyboard shortcut).
Wouldn't it be better to define a macro that added the 'strong' tags around the selected text? Then you could assign it to Ctrl+B or whatever.
Having to select both chunks of text and invoking the macro twice seems too much like hard work to me.
(maybe you need to explain why you want to do this)
Instead of {0}, I use &. Assign macro to Ctrl+Q and you are all set!
' Wraps the current selection with the specified text. Use the & character as the anchor for the selected text.
Public Sub WrapSelection()
Dim selection As TextSelection = DirectCast(DTE.ActiveDocument.Selection, TextSelection)
DTE.UndoContext.Open("Wrap Selection")
Try
Dim sInput As String = InputBox("Wrap(&&, state)")
If Len(sInput) > 0 Then
Dim sContent As String = selection.Text
Dim iStart As Integer = InStr(sInput, "&") - 1
Dim iEnd As Integer = InStrRev(sInput, "&")
selection.Insert(sInput.Substring(0, iStart) + sContent + sInput.Substring(iEnd), vsInsertFlags.vsInsertFlagsContainNewText)
'selection.Insert(sInput.Substring(iEnd), vsInsertFlags.vsInsertFlagsInsertAtEnd)
End If
Catch ex As Exception
DTE.UndoContext.SetAborted()
MsgBox(ex.Message)
Finally
'If an error occured, then need to make sure that the undo context is cleaned up.
'Otherwise, the editor can be left in a perpetual undo context
DTE.UndoContext.Close()
End Try
End Sub