Combo box flickering about tqvaultae HOT 5 CLOSED

I don't have any flickering here... What exactly is flickering ? The control or the list when is open ?

Can you try to remove the method below from ScalingComboBox.cs ?

	protected override void WndProc(ref Message m)
	{
		base.WndProc(ref m);

		Graphics g = Graphics.FromHwnd(Handle);

		if (m.Msg == WM_PAINT)
		{
			Rectangle bounds = new Rectangle(0, 0, Width, Height);
			ControlPaint.DrawBorder(g, bounds, Color.FromArgb(223, 188, 97), ButtonBorderStyle.Solid);
		}
	}

As a second test, please remove the two lines:

		this.DrawMode = DrawMode.OwnerDrawFixed;
		this.DrawItem += ScalingComboboxDrawItem;

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Another test... Can you try to add this method to ScalingComboBox.cs while keeping everything else the way it is now ?

protected override CreateParams CreateParams {
  get {
    CreateParams cp = base.CreateParams;
    cp.ExStyle |= 0x02000000;  // Turn on WS_EX_COMPOSITED
    return cp;
  }
} 

Sorry for all these requests, but I don't have how to test this bug, tried two different PC.

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I tested all combinations for the first suggestion. The suggestion in the second comment results in a run time error.

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It is happening on mouse over the border only.

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Nothing solved the problem ?

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