How do I fix control ghosting issue in ListView?

Question

I have a ListView control and I want to add a checkbox in upper left corner of ListView.

The solution for adding the CheckBox control that I'm using is this:

Me.ListViewCustom1.Controls.Add(CheckBoxControl);
Me.CheckBoxControl.Location = new Point(3, 5);

The issue I'm having is on ListView scroll. The checkbox appears all smeared up. I've been scavaging the web for a solution and I really can't find something that would solve this issue.

This is how the controls appears:

I hereby asking for help in this complicated situation.

[How to add a Checkbox to a ListView column header?](https://stackoverflow.com/a/35790015/3110834) — Reza Aghaei, Jan 22 '21 at 22:48
I actually saw that post. The idea with adding a dedicated column for the checkbox is clever but I would like to solve the issue without the new column. Do you think it's possible? — Pavlo Zakharuk, Jan 22 '21 at 22:50
[See here](https://stackoverflow.com/questions/1851620/handling-scroll-event-on-listview-in-c-sharp) on capturing the scroll event ; then maybe a refresh will help.. — TaW, Jan 22 '21 at 23:00
I've had problems with this solution aswell. Because the position I set doesn't follow the "column". The checkbox, after refresh, appears in position not relative to first column :/ — Pavlo Zakharuk, Jan 22 '21 at 23:09

Reza Aghaei · Accepted Answer · 2021-01-26T05:34:19.000

2

Assuming you don't want the option that I used in the linked post, the other way that you can approach this is adding the CheckBox to the header of the ListView.

Using SendMessageYou can send LVM_GETHEADER message to the listview control and get the handle of the header, then SetParent will help you to set the header as parent of checkbox:

const int LVM_GETHEADER = 0x1000 + 31;
[DllImport("user32.dll")]
static extern IntPtr SendMessage(IntPtr hWnd, int Msg, IntPtr wParam, IntPtr lParam);
[DllImport("user32.dll")]
static extern IntPtr SetParent(IntPtr hWndChild, IntPtr hWndNewParent);
private void Form1_Load(object sender, EventArgs e)
{
    var header = SendMessage(listView1.Handle, LVM_GETHEADER, IntPtr.Zero, IntPtr.Zero);
    var checkBox = new CheckBox()
    {
        AutoSize = true,
        Text = "",
        Location = new Point(3, 5)
    };
    this.listView1.Controls.Add(checkBox);
    SetParent(checkBox.Handle, header);
}

And this is what you get:

Obviously I've added a few extra spaces before text of the column header to make room for the check box.

edited Jan 26 '21 at 05:34

answered Jan 23 '21 at 06:59

Reza Aghaei

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This looks promissing! I'll take a look at that as soon as I can and I'll mark your answer as the correct one afterwards. Thank you :) – Pavlo Zakharuk Jan 23 '21 at 10:09
I've tested the answer. Checkbox appears but is instantly hidden after hovering mouse on first column. – Pavlo Zakharuk Jan 25 '21 at 18:19
@PashaZakharuk It works properly in my tests. You probably have mixed your own solution with this post. Look at the updated screen capture. – Reza Aghaei Jan 26 '21 at 05:35
You're right. I'm considering your answer as the correct one. I've created a brand new control and it works perfectly! Thank you! – Pavlo Zakharuk Jan 26 '21 at 17:38
Cool! My pleasure :) – Reza Aghaei Jan 26 '21 at 17:40

How do I fix control ghosting issue in ListView?

1 Answers1