还是原生ToolTip好

ContextMenuManager/BulePointLilac.Controls/MyToolBar.cs

@@ -71,17 +71,18 @@ namespace BulePointLilac.Controls
             picImage.Location = new Point(16, 6).DpiZoom();
             lblText.Top = 52.DpiZoom();
             lblText.Resize += (sender, e) => lblText.Left = (Width - lblText.Width) / 2;
-            lblText.SetEnabled(false);
             this.Image = image;
             this.Text = text;
+            MyToolTip.SetToolTip(this, text);
+            ThroughControl(picImage);
+            ThroughControl(lblText);
         }
 
         readonly PictureBox picImage = new PictureBox
         {
             SizeMode = PictureBoxSizeMode.StretchImage,
             Size = new Size(40, 40).DpiZoom(),
-            BackColor = Color.Transparent,
-            Enabled = false
+            BackColor = Color.Transparent
         };
 
         readonly Label lblText = new Label
@@ -107,5 +108,17 @@ namespace BulePointLilac.Controls
             get => BackColor.A / 255;
             set => BackColor = Color.FromArgb((int)(value * 255), Color.White);
         }
+
+        private void ThroughControl(Control ctr)
+        {
+            MouseEventArgs getAbsArgs(MouseEventArgs e)
+            {
+                return new MouseEventArgs(e.Button, e.Clicks, ctr.Left + e.X, ctr.Top + e.Y, e.Delta);
+            }
+            ctr.MouseDown += (sender, e) => this.OnMouseDown(getAbsArgs(e));
+            ctr.MouseMove += (sender, e) => this.OnMouseMove(getAbsArgs(e));
+            ctr.MouseEnter += (sender, e) => this.OnMouseEnter(e);
+            MyToolTip.SetToolTip(ctr, this.Text);
+        }
     }
 }

ContextMenuManager/BulePointLilac.Controls/MyToolTip.cs

@@ -1,68 +1,21 @@
-using System.Drawing;
-using System.Windows.Forms;
+using System.Windows.Forms;
 
 namespace BulePointLilac.Controls
 {
-    public sealed class MyToolTip : Form
+    public sealed class MyToolTip
     {
-        public static readonly MyToolTip Instance = new MyToolTip();
-
         public static void SetToolTip(Control ctr, string tip)
         {
-            if(string.IsNullOrWhiteSpace(tip)) return;
-            ctr.MouseEnter += (sender, e) =>
-            {
-                Instance.Text = tip;
-                Instance.Size = Instance.LblTip.Size;
-                Instance.Location = ctr.PointToScreen(new Point(ctr.Width + 10, (ctr.Height - Instance.Height) / 2));
-                Instance.Visible = true;
-                ctr.FindForm().Activate();
-            };
-            ctr.MouseLeave += (sender, e) => Instance.Visible = false;
+            ToolTip toolTip = new ToolTip();
+            toolTip.SetToolTip(ctr, tip);
+            ctr.Disposed += (sender, e) => toolTip.Dispose();
         }
 
-        static MyToolTip()
-        {
-            Instance.Opacity = 0;
-            Instance.Show();
-            Instance.Visible = false;
-            Instance.Opacity = 1;
-        }
-        private MyToolTip()
-        {
-            this.TopMost = true;
-            this.BackColor = Color.FromArgb(235, 245, 255);
-            this.ForeColor = Color.FromArgb(80, 80, 80);
-            this.ShowIcon = this.ShowInTaskbar = false;
-            this.FormBorderStyle = FormBorderStyle.None;
-            this.Controls.Add(LblTip);
-        }
-        public new string Text
-        {
-            get => LblTip.Text;
-            set => LblTip.Text = value;
-        }
-        public new Font Font
+        public static void SetToolTip(ToolStripMenuItem item, string tip)
         {
-            get => LblTip.Font;
-            set => LblTip.Font = value;
+            //必须先设置item的Owner
+            item.Owner.ShowItemToolTips = true;
+            item.ToolTipText = tip;
         }
-        public new Color ForeColor
-        {
-            get => LblTip.ForeColor;
-            set => LblTip.ForeColor = value;
-        }
-        public BorderStyle BorderStyle
-        {
-            get => LblTip.BorderStyle;
-            set => LblTip.BorderStyle = value;
-        }
-
-        readonly Label LblTip = new Label
-        {
-            AutoSize = true,
-            Font = SystemFonts.MenuFont,
-            BorderStyle = BorderStyle.FixedSingle,
-        };
     }
 }