C# ToolStripManager.Renderer属性代码示例

// This example demonstrates how to apply a 
// custom professional renderer to an individual
// ToolStrip or to the application as a whole.
class Form6 : Form
{
    ComboBox targetComboBox = new ComboBox();

    public Form6()
    {
        // Alter the renderer at the top level.

        // Create and populate a new ToolStrip control.
        ToolStrip ts = new ToolStrip();
        ts.Name = "ToolStrip";
        ts.Items.Add("Apples");
        ts.Items.Add("Oranges");
        ts.Items.Add("Pears");

        // Create a new menustrip with a new window.
        MenuStrip ms = new MenuStrip();
        ms.Name = "MenuStrip";
        ms.Dock = DockStyle.Top;

        // add top level items
        ToolStripMenuItem fileMenuItem = new ToolStripMenuItem("File");
        ms.Items.Add(fileMenuItem);
        ms.Items.Add("Edit");
        ms.Items.Add("View");
        ms.Items.Add("Window");

        // Add subitems to the "File" menu.
        fileMenuItem.DropDownItems.Add("Open");
        fileMenuItem.DropDownItems.Add("Save");
        fileMenuItem.DropDownItems.Add("Save As...");
        fileMenuItem.DropDownItems.Add("-");
        fileMenuItem.DropDownItems.Add("Exit");

        // Add a Button control to apply renderers.
        Button applyButton = new Button();
        applyButton.Text = "Apply Custom Renderer";
        applyButton.Click += new EventHandler(applyButton_Click);

        // Add the ComboBox control for choosing how
        // to apply the renderers.
        targetComboBox.Items.Add("All");
        targetComboBox.Items.Add("MenuStrip");
        targetComboBox.Items.Add("ToolStrip");
        targetComboBox.Items.Add("Reset");

        // Create and set up a TableLayoutPanel control.
        TableLayoutPanel tlp = new TableLayoutPanel();
        tlp.Dock = DockStyle.Fill;
        tlp.RowCount = 1;
        tlp.ColumnCount = 2;
        tlp.ColumnStyles.Add(new ColumnStyle(SizeType.AutoSize));
        tlp.ColumnStyles.Add(new ColumnStyle(SizeType.Percent));
        tlp.Controls.Add(applyButton);
        tlp.Controls.Add(targetComboBox);

        // Create a GroupBox for the TableLayoutPanel control.
        GroupBox gb = new GroupBox();
        gb.Text = "Apply Renderers";
        gb.Dock = DockStyle.Fill;
        gb.Controls.Add(tlp);

        // Add the GroupBox to the form.
        this.Controls.Add(gb);

        // Add the ToolStrip to the form's Controls collection.
        this.Controls.Add(ts);

        // Add the MenuStrip control last.
        // This is important for correct placement in the z-order.
        this.Controls.Add(ms);
    }

    // This event handler is invoked when 
    // the "Apply Renderers" button is clicked.
    // Depending on the value selected in a ComboBox control,
    // it applies a custom renderer selectively to
    // individual MenuStrip or ToolStrip controls,
    // or it applies a custom renderer to the 
    // application as a whole.
    void applyButton_Click(object sender, EventArgs e)
    {
        ToolStrip ms = ToolStripManager.FindToolStrip("MenuStrip");
        ToolStrip ts = ToolStripManager.FindToolStrip("ToolStrip");

        if (targetComboBox.SelectedItem != null)
        {
            switch (targetComboBox.SelectedItem.ToString())
            {
                case "Reset":
                {
                    ms.RenderMode = ToolStripRenderMode.ManagerRenderMode;
                    ts.RenderMode = ToolStripRenderMode.ManagerRenderMode;

                    // Set the default RenderMode to Professional.
                    ToolStripManager.RenderMode = ToolStripManagerRenderMode.Professional;

                    break;
                }

                case "All":
                {
                    ms.RenderMode = ToolStripRenderMode.ManagerRenderMode;
                    ts.RenderMode = ToolStripRenderMode.ManagerRenderMode;

                    // Assign the custom renderer at the application level.
                    ToolStripManager.Renderer = new CustomProfessionalRenderer();

                    break;
                }

                case "MenuStrip":
                {
                    // Assign the custom renderer to the MenuStrip control only.
                    ms.Renderer = new CustomProfessionalRenderer();

                    break;
                }

                case "ToolStrip":
                {
                    // Assign the custom renderer to the ToolStrip control only.
                    ts.Renderer = new CustomProfessionalRenderer();

                    break;
                }
            }
        }
    }
}

// This type demonstrates a custom renderer. It overrides the
// OnRenderMenuItemBackground and OnRenderButtonBackground methods
// to customize the backgrounds of MenuStrip items and ToolStrip buttons.
class CustomProfessionalRenderer : ToolStripProfessionalRenderer
{
    protected override void OnRenderMenuItemBackground(ToolStripItemRenderEventArgs e)
    {
        if (e.Item.Selected)
        {
            using (Brush b = new SolidBrush(ProfessionalColors.SeparatorLight))
            {
                e.Graphics.FillEllipse(b, e.Item.ContentRectangle);
            }
        }
        else
        {
            using (Pen p = new Pen(ProfessionalColors.SeparatorLight))
            {
                e.Graphics.DrawEllipse(p, e.Item.ContentRectangle);
            }
        }
    }

    protected override void OnRenderButtonBackground(ToolStripItemRenderEventArgs e)
    {
        Rectangle r = Rectangle.Inflate(e.Item.ContentRectangle, -2, -2);

        if (e.Item.Selected)
        {
            using (Brush b = new SolidBrush(ProfessionalColors.SeparatorLight))
            {
                e.Graphics.FillRectangle(b, r);
            }
        }
        else
        {
            using (Pen p = new Pen(ProfessionalColors.SeparatorLight))
            {
                e.Graphics.DrawRectangle(p, r);
            }
        }
    }
}