MenuItem 的颜色变化

Question

我正在编写一个备份工具。在我的工具之上，我有一个包含两个工具条菜单项的菜单条。我根据我的期望稍微改变了颜色。未聚焦菜单看起来不错：

当我现在单击菜单项 "File" 打开上下文菜单时，颜色变为白色，我无法再阅读文本：

谁能告诉我在哪里可以改变这种行为？我使用 Visual Studio 2013 Ultimate，Windows Forms Application，代码在 C# 中。

代码如下：

// // 初始化 menuStrip1 // 这个.menuStrip1.BackColor = System.Drawing.Color.MediumBlue; 这个。menuStrip1.BackgroundImageLayout = System.Windows.Forms.ImageLayout.Center; 这个。menuStrip1.Font = new System.Drawing.Font("Segoe UI Semilight", 15.75F，System.Drawing.FontStyle.Regular，<br> System.Drawing.GraphicsUnit.Point, ((字节)(0))); 这个。menuStrip1.Items.AddRange(新System.Windows.Forms.ToolStripItem[] { this.fileToolStripMenuItem, this.helpToolStripMenuItem}); this.menuStrip1.Location = new System.Drawing.Point(0, 0); this.menuStrip1.MinimumSize = new System.Drawing.Size(0, 40); 这个.menuStrip1.Name = "menuStrip1"; this.menuStrip1.Size = new System.Drawing.Size(1056, 40); 这个.menuStrip1.TabIndex = 77; 这个.menuStrip1.Text = "menuStrip1"; // // 初始化 fileToolStripMenuItem 并添加到 menuStrip1 // this.fileToolStripMenuItem.DropDownItems.AddRange(新 System.Windows.Forms.ToolStripItem[] { this.saveToolStripMenuItem, this.saveAsToolStripMenuItem, this.loadToolStripMenuItem}); this.fileToolStripMenuItem.Font = new System.Drawing.Font("Calibri Light", 15.75F，System.Drawing.FontStyle.Regular， System.Drawing.GraphicsUnit.Point, ((字节)(0))); this.fileToolStripMenuItem.前景色= System.Drawing.SystemColors.ControlLightLight; this.fileToolStripMenuItem.姓名="fileToolStripMenuItem"; this.fileToolStripMenuItem.Size = new System.Drawing.Size(54, 36); this.fileToolStripMenuItem.文字="File"; this.fileToolStripMenuItem.点击+=新建System.EventHandler (this.fileToolStripMenuItem_点击); // // 初始化 saveToolStripMenuItem 并添加到 fileToolStripMenuItem // this.saveToolStripMenuItem.BackColor = System.Drawing.Color.MediumBlue; this.saveToolStripMenuItem.前景色= System.Drawing.SystemColors.ControlLightLight; this.saveToolStripMenuItem.姓名="saveToolStripMenuItem"; this.saveToolStripMenuItem.Size = new System.Drawing.Size(166, 30); this.saveToolStripMenuItem.文字="Save"; this.saveToolStripMenuItem.点击+=新建System.EventHandler (this.saveToolStripMenuItem_点击);//

Answer 1

默认情况下，此功能不是开箱即用的。您需要为您的工具条创建自定义 Renderer 才能实现此目的。

创建一个继承自 ToolStripProfessionalRenderer -

的 class

    private class BlueRenderer : ToolStripProfessionalRenderer
    {
        protected override void OnRenderMenuItemBackground(ToolStripItemRenderEventArgs e)
        {
            Rectangle rc = new Rectangle(Point.Empty, e.Item.Size);
            Color c = Color.MediumBlue;
            using (SolidBrush brush = new SolidBrush(c))
                e.Graphics.FillRectangle(brush, rc);
        }
    }

并将此呈现器附加到表单构造函数中的菜单条 -

    public Form1()
    {
        InitializeComponent();
        menuStrip1.Renderer = new BlueRenderer();
    }

Answer 2

您可以创建自己的 ProfessionalColorTable 并覆盖其属性：

namespace WindowsFormsApplication1
{
     public partial class Form1 : Form
     {
         public Form1()
         {
             InitializeComponent();
             menuStrip1.Renderer = new ToolStripProfessionalRenderer(new MyColorTable());
         }
     }

     public class MyColorTable : ProfessionalColorTable
     {
         public override Color ToolStripDropDownBackground
         {
             get
             {
                 return Color.Blue;
             }
         }

         public override Color ImageMarginGradientBegin
         {
             get
             {
                 return Color.Blue;
             }
         }

         public override Color ImageMarginGradientMiddle
         {
             get
             {
                 return Color.Blue;
             }
         }

         public override Color ImageMarginGradientEnd
         {
             get
             {
                 return Color.Blue;
             }
         }

         public override Color MenuBorder
         {
             get
             {
                 return Color.Black;
             }
         }

         public override Color MenuItemBorder
         {
             get
             {
                 return Color.Black;
             }
         }

         public override Color MenuItemSelected
         {
             get
             {
                 return Color.Navy;
             }
         }

         public override Color MenuStripGradientBegin
         {
             get
             {
                 return Color.Blue;
             }
         }

         public override Color MenuStripGradientEnd
         {
             get
             {
                 return Color.Blue;
             }
         }

         public override Color MenuItemSelectedGradientBegin
         {
             get
             {
                 return Color.Navy;
             }
         }

         public override Color MenuItemSelectedGradientEnd
         {
             get
             {
                 return Color.Navy;
             }
         }

         public override Color MenuItemPressedGradientBegin
         {
             get
             {
                 return Color.Blue;
             }
         }

         public override Color MenuItemPressedGradientEnd
         {
             get
             {
                 return Color.Blue;
             }
         }
     }
}

这是上面代码的结果：

MenuItem 的颜色变化

Color change for MenuItem

c#

winforms

visual-studio

menustrip

toolstripmenu