ToolStrip sometimes not responding to a mouse click

Question

I have a .NET 2.0 WinForms application with a ToolStrip on my main form. Sometimes, the ToolStrip icons don\'t respond to the first mouse click, so I have to click the icon

Answer 1

Here is the implementation for @Doc Brown's solution:

public class ToolStripX : ToolStrip
{
    private const int WM_MOUSEACTIVATE = 0x0021;
    private const int MA_ACTIVATEANDEAT = 2;
    private const int MA_ACTIVATE = 1;

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

        if (m.Msg == WM_MOUSEACTIVATE &&
            m.Result == (IntPtr)MA_ACTIVATEANDEAT)
        {
            m.Result = (IntPtr)MA_ACTIVATE;
        }
    }
}