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I'm trying to create a custom control in Visual Studio for use in VBA. I found the following link and tried to follow it:

http://msdn.microsoft.com/en-us/library/ms973802.aspx[^]

Everything in the link appears to work fine up until the point where it describes creating an app to call and test the DLL.

In my VBA (NOT VB) app, I added a reference to the DLL. Then, I created a form, as well as a sub that does nothing but show the form. When I try to run this VBA app, however, I get a "User-defined type not defined" error on the two declarations in the attached snippet.

Option Explicit
Public moTempClass As PhysServer2.NET_Temperature
Public moTemp As PhysServer2.iTemperature
Sub Main()
frmTemperature.show
End Sub


So, my question is: Should this work in VBA (NOT VB)? Or, is there something special I have to do with a custom control to get it to work in VBA (NOT VB).

Thanks, in advance, for any help and suggestions.
Posted
Updated 10-Mar-11 14:44pm
v2
Comments
Maciej Los 17-Mar-11 17:00pm
   
Which version of VS2008 do you have: Express, Standard, Pro version?
technotrope 17-Mar-11 17:55pm
   
Standard
Maciej Los 4-Apr-11 14:59pm
   
Hello! I can help you to create custom control in VBA. I'm trying to solve your problem in VB.NET, but unsuccessful yet.
technotrope 4-Apr-11 16:03pm
   
Losmac -

Thanks for your reply. I guess I'm not quite sure what you mean by "create custom control in VBA." Do you mean "CREATE the control," or "get the already-created control to WORK" in VBA?

Thanks, again, for any help you can offer.
Maciej Los 5-Apr-11 14:09pm
   
Create = create, not use existing control to work with VBA. For example i can help you to create custom control in MS Excel: form to calculate temperature from Celsius to Fahrenheit.

1 solution

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Solution 2

1) Open MS Excel
2) ALT+F11 to open VBA code editor
3) Add new class (menu Insert->Class module) and change it name to: ClsCalcTemp
4) Copy and paste code below:
Option Explicit

Private mdblCelsius As Double
Private mdblFahrenheit As Double

Private Sub Class_Initialize()
    Celsius = 0
    Fahrenheit = 0
End Sub

Public Property Let Celsius(dCelcius As Double)
    mdblCelsius = dCelcius
End Property

Public Property Get Celsius() As Double
    Celsius = mdblCelsius
End Property

Public Property Let Fahrenheit(dFahrenheit As Double)
    mdblFahrenheit = dFahrenheit
End Property

Public Property Get Fahrenheit() As Double
    Fahrenheit = mdblFahrenheit
End Property

Public Function F2C(ByVal dFahrenheit As Double) As Double
    mdblFahrenheit = dFahrenheit
    mdblCelsius = ((dFahrenheit * 9) / 5) + 32
    F2C = mdblCelsius
End Function

Public Function C2F(ByVal dCelsius As Double) As Double
    mdblCelsius = dCelsius
    mdblFahrenheit = ((dCelsius - 32) * 5) / 9
    C2F = mdblFahrenheit
End Function

Private Sub Class_Terminate()
    mdblCelsius = 0
    mdblFahrenheit = 0
End Sub


5) Now, insert new UserForm (menu Insert->UserForm) and change it name to: CalcTempFrm
6) Insert controls:
- Frame /set property Caption:=Choose option/,
- ListBox (on he frame; this could be our option group) /set property Name:=LstOptTemp/ ,
- Label (below Frame) /set property Caption:=Temperature/,
- TextBox (on the right side of Label) /set property Name:=TxtTemperature/
- Label (below Textbox) /set property Name:=LblResult/
7) Copy and paste code below:
Option Explicit

Dim oTCalc As New ClsCalcTemp

Private Sub UserForm_Initialize()

    'add options
    Me.LstOptTemp.AddItem "Celsius -> Fahrenheit"
    Me.LstOptTemp.AddItem "Fahrenheit -> Celsius"

End Sub

Private Sub CmdCalculate_Click()
Dim iOpt As Integer, dblTemperature As Double, dblResult As Double

On Error GoTo Err_CmdCalculate_Click

iOpt = Me.LstOptTemp.ListIndex
dblTemperature = CDbl(Me.TxtTemperature)

Select Case iOpt
    Case -1
        MsgBox "Select option!", vbInformation, "Message..."
    Case 0
        dblResult = oTCalc.C2F(dblTemperature)
    Case 1
        dblResult = oTCalc.F2C(dblTemperature)
End Select

Exit_CmdCalculate_Click:
    Me.LblResult.Caption = "Result: " & dblResult
    Exit Sub
    
Err_CmdCalculate_Click:
    Select Case Err.Number
        Case 13
            MsgBox "Enter correct value!", vbInformation, "Error!"
            Me.TxtTemperature.SetFocus
            
        Case Else
            MsgBox Err.Description, vbExclamation, "Error - " & Err.Number
            
    End Select
    
    dblResult = 0
    Resume Exit_CmdCalculate_Click

End Sub

Private Sub UserForm_QueryClose(Cancel As Integer, CloseMode As Integer)
    Set oTCalc = Nothing
End Sub


Run UserForm (F5) and be happy with your custom control and class.
   
v2
Comments
technotrope 5-Apr-11 16:41pm
   
Losmac -

Once again, many thanks for your reply. I feel like you're steering me in the right direction.

The reason I started the control in .NET was that I wanted to inherit the picturebox control. I'm trying to replace a 3rd-party (out of business, now) imagemap control we rely heavily upon.

Any way you know of I can test if a mouse-down point falls within a shape defined by X,Y coordinates?

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