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    <p>After exhausting research, I found it out. The thing is that when you call</p> <pre><code>SetWindowTheme(this.Handle, "", ""); </code></pre> <p>within custom <code>ListView</code> class, it prevents visual styles from affecting the appearence of the <code>ListView</code> control but not the <code>ListView</code> header control (<code>SysHeader32</code> window), which is child window of <code>ListView</code>. <strong>So when calling the <code>SetWindowTheme</code> function, we need to provide the handle of the header window instead of the handle of the ListView:</strong></p> <pre><code>[DllImportAttribute("uxtheme.dll")] private static extern int SetWindowTheme(IntPtr hWnd, string appname, string idlist); [DllImport("user32")] [return: MarshalAs(UnmanagedType.Bool)] private static extern bool EnumChildWindows(IntPtr window, EnumWindowProc callback, IntPtr i); // Callback method to be used when enumerating windows: private static bool EnumWindow(IntPtr handle, IntPtr pointer) { GCHandle gch = GCHandle.FromIntPtr(pointer); List&lt;IntPtr&gt; list = gch.Target as List&lt;IntPtr&gt;; if (list == null) throw new InvalidCastException("GCHandle Target could not be cast as List&lt;IntPtr&gt;"); list.Add(handle); return true; } // delegate for the EnumChildWindows method: private delegate bool EnumWindowProc(IntPtr hWnd, IntPtr parameter); // get first child: private static void DisableVisualStylesForFirstChild(IntPtr parent) { List&lt;IntPtr&gt; children = new List&lt;IntPtr&gt;(); GCHandle listHandle = GCHandle.Alloc(children); try { EnumWindowProc childProc = new EnumWindowProc(EnumWindow); EnumChildWindows(parent, childProc, GCHandle.ToIntPtr(listHandle)); if (children.Count &gt; 0) SetWindowTheme(children[0], "", ""); } finally { if (listHandle.IsAllocated) listHandle.Free(); } } protected override void OnHandleCreated(EventArgs e) { DisableVisualStylesForFirstChild(this.Handle); base.OnHandleCreated(e); } </code></pre>
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    1. COSince it's based on the solution suggested by Kamil Lach, I'm awarding his answer with bounty I offered.
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