How can I prevent a disabled ToolStripMenuItem from showing a border on mouse over?

问题

Yes, exactly same as the title, in my project some of toolstripmenuitems were disabled. But when i bring the cursor over the menu item, a blue border is appearing like this:

But i don't want this. I want it like this:

Could you help me, how do i prevent this blue border?

回答1:

You should create a custom ToolStripRenderer, take a look at this - How to: Set the ToolStrip Renderer for an Application

You have to create a custom renderer like this:

class CutomToolStripMenuRenderer : ToolStripProfessionalRenderer
{
    protected override void OnRenderMenuItemBackground(ToolStripItemRenderEventArgs e)
    {
        if (e.Item.Enabled)
        base.OnRenderMenuItemBackground(e);
    }

    protected override void OnRenderButtonBackground(ToolStripItemRenderEventArgs e)
    {
        if (e.Item.Enabled)
        base.OnRenderMenuItemBackground(e);
    }
}

And then set this renderer to your menu strip:

menuStrip1.Renderer = new CustomToolStripRenderer();

回答2:

I get a little more control of my "Disabled" menuItems by Switching between ToolStripMenuItem and a copy of the item as a ToolStripLabel. Then instead of setting Enabled = false, I just toggle the visibility between the two. This way I can have custom forecolors for the "Disabled" menuItem (Label).

    bool m_isStartSvcEnabled = true;


    void ToggleServiceEnabled()
    {
        m_isStartSvcEnabled = !m_isStartSvcEnabled;

        mnuStartSvc.Visible = m_isStartSvcEnabled;
        lblStartSvc.Visible = !m_isStartSvcEnabled;

        mnuStopSvc.Visible = !m_isStartSvcEnabled;
        lblStopSvc.Visible = m_isStartSvcEnabled;
    }

(White menu forecolor, and and lighter gray forecolor for the label I defined in the creation of the items.)

来源：https://stackoverflow.com/questions/13364923/how-can-i-prevent-a-disabled-toolstripmenuitem-from-showing-a-border-on-mouse-ov

标签

winforms

border

toolstripmenu