Solved

exposing an imagelist property in my custom control

Posted on 2004-10-12
3
301 Views
Last Modified: 2013-12-26
hello experts... i'm trying to expose a propery to attach an imagelist to my custom control... but i dont see the property... and i was thinking maybe somehow i have to do the "custom" property like a listview control uses to attach the imagelist.  can someone explain how i can attach an imagelist to my control?

or better yet, if you can tell me how i can create an instance of an imagelist without having to include comctl32.ocx in my custom control project.  comctl32 will be included in the project that i plan to use the custom control in...

i'm trying this to expose the imagelist property...
'=======================================
dim m_ImageList as object
Public Property Get ImageList() As Object
   ImageList = m_ImageList
End Property
Public Property Let ImageList(ByVal NewImageList As Object)
   Set m_ImageList = NewImageList
End Property
Public Property Set ImageList(ByVal NewImageList As Object)
   Set m_ImageList = NewImageList
End Property
'=======================================
0
Comment
Question by:RobK6364
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
3 Comments
 
LVL 22

Accepted Solution

by:
danaseaman earned 125 total points
ID: 12292286
If using VbAccelerator ImageList then you only need to supply the handle (m_hIml) which is a long. If you are using the Vb Imagelist then you need to pass an object. Here is code that can handle both situations using Varaint.

Public Property Let ImageList(Value As Variant)
Dim hIml As Long
   '
    If (VarType(Value) = vbLong) Then
      ' Assume a handle to an image list:
      hIml = Value
   ElseIf (VarType(hIml) = vbObject) Then
      ' Assume a VB image list:
      On Error Resume Next
      ' Get the image list initialised.
      Value.ListImages(1).Draw 0, 0, 0, 1
      hIml = Value.hImageList
      If (Err.Number = 0) Then
          ' OK
      Else
          gErr 4, "UniTreeViewCtl"
      End If
      On Error GoTo 0
   End If
   
   If Not (hIml = 0) Then
      SendMessageL m_hWnd, TVM_SETIMAGELIST, TVSIL_NORMAL, hIml
   End If
   '
End Property
0
 
LVL 22

Expert Comment

by:danaseaman
ID: 12292718
By the way...If you want to create the Imagelist in your control there is code at VbAccelerator to do this. The dependency is ComCtl32.Dll which is present in all Windows OS and does not need to be included in your deployment package. There is a great example on how to implement this at PSC. You initialise the ImageList using "InitializeImageListSmall" and supply a bitmap strip using "ImageListSmall_AddBitmap". Link http://www.planet-source-code.com/vb/scripts/ShowCode.asp?txtCodeId=56021&lngWId=1. Also see VbAccelerator.com for lighweight ImageList classes.
0
 
LVL 1

Author Comment

by:RobK6364
ID: 12294314
thanks, got it workin : )
0

Featured Post

Independent Software Vendors: We Want Your Opinion

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Have you ever wanted to restrict the users input in a textbox to numbers, and while doing that make sure that they can't 'cheat' by pasting in non-numeric text? Of course you can do that with code you write yourself but it's tedious and error-prone …
Enums (shorthand for ‘enumerations’) are not often used by programmers but they can be quite valuable when they are.  What are they? An Enum is just a type of variable like a string or an Integer, but in this case one that you create that contains…
Get people started with the process of using Access VBA to control Outlook using automation, Microsoft Access can control other applications. An example is the ability to programmatically talk to Microsoft Outlook. Using automation, an Access applic…
Show developers how to use a criteria form to limit the data that appears on an Access report. It is a common requirement that users can specify the criteria for a report at runtime. The easiest way to accomplish this is using a criteria form that a…

726 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question