Solved

Sendmessage and LVM_INSERTITEM problem

Posted on 2004-08-20
4
1,183 Views
Last Modified: 2008-01-09
I want to be able to insert items into a listview via Sendmessage and LVM_INSERTITEM.  It actually inserts the item and it shows up in the listview, but immediately after it inserts the item the program terminates with an exception.  I'm using VB6 and MSCOMCTL.OCX.

Any ideas why is erroring out?
 
Here's the code I have:

'Begin VB
Option Explicit

Private Const LVM_FIRST As Long = &H1000
Private Const LVM_INSERTITEM As Long = (LVM_FIRST + 7)

Private Const LVIF_TEXT As Long = &H1
Private Const LVIF_STATE As Long = &H8


Private Type LV_ITEM
    mask As Long
    iItem As Long
    iSubItem As Long
    state As Long
    stateMask As Long
    pszText As String
    cchTextMax As Long
    iImage As Long
    lParam As Long
    iIndent As Long
End Type

Private Declare Function SendMessage Lib "user32" _
    Alias "SendMessageA" _
   (ByVal hwnd As Long, _
    ByVal wMsg As Long, _
    ByVal wParam As Long, _
    lParam As Any) As Long


Private Sub InsertIntoLV()
Dim LVitem As LV_ITEM
Dim lRes As Long

   With LVitem
      LVitem.mask = LVIF_TEXT    '; // Text Style
      LVitem.cchTextMax = 256    '; // Max size of test
      LVitem.iItem = 0           '; // choose item
      LVitem.iSubItem = 0        '; // Put in first coluom
      LVitem.pszText = "My Text" '; // Text to display (can be from a char variable) (Items)
   End With

   Call SendMessage(Me.ListView1.hwnd, LVM_INSERTITEM, 0, LVitem)
   
End Sub
'End VB
0
Comment
Question by:Pber
  • 2
4 Comments
 
LVL 85

Accepted Solution

by:
Mike Tomlinson earned 100 total points
ID: 11853442
0
 
LVL 26

Author Comment

by:Pber
ID: 11854092
I was just trying to get fancy with something.  Looks like I'm SOL, oh well.

thanks

Pat.
0
 
LVL 85

Expert Comment

by:Mike Tomlinson
ID: 11854190
I haven't found any technical articles on the subject...only these other posts that say it can't be done.

Idle_Mind
0

Featured Post

Windows Server 2016: All you need to know

Learn about Hyper-V features that increase functionality and usability of Microsoft Windows Server 2016. Also, throughout this eBook, you’ll find some basic PowerShell examples that will help you leverage the scripts in your environments!

Question has a verified solution.

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

Suggested Solutions

Title # Comments Views Activity
VB6 - Compare and highlight cell not the same 3 52
vb6 connector to mongodb 2 85
MsgBox 4 61
Powerpoint 2013: Change cell reference in excel link 3 37
Introduction In a recent article (http://www.experts-exchange.com/A_7811-A-Better-Concatenate-Function.html) for the Excel community, I showed an improved version of the Excel Concatenate() function.  While writing that article I realized that no o…
Most everyone who has done any programming in VB6 knows that you can do something in code like Debug.Print MyVar and that when the program runs from the IDE, the value of MyVar will be displayed in the Immediate Window. Less well known is Debug.Asse…
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…
This lesson covers basic error handling code in Microsoft Excel using VBA. This is the first lesson in a 3-part series that uses code to loop through an Excel spreadsheet in VBA and then fix errors, taking advantage of error handling code. This l…

831 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