如果鼠标位于具有工具提示的图像上，C＃.Net窗体将不会绘制

Question

我有一个带有图片框的表单并且图片框有工具提示。问题是当表单加载和鼠标在图像上，表单不会绘制 - 查看图像。当鼠标离开picturebox时，一切都很好。

Form1.cs的

using System; 
using System.Windows.Forms; 

namespace testTooltip 
{ 
    public partial class Form1 : Form 
    { 
     public Form1() 
     { 
      InitializeComponent(); 
     } 

     private void pictureBox1_MouseMove(object sender, MouseEventArgs e) 
     { 
      if(toolTip1.Active) 
      toolTip1.Show(e.X + " " + e.Y, this, e.X, e.Y); 
     } 

     private void pictureBox1_MouseLeave(object sender, EventArgs e) 
     { 
      toolTip1.Hide(this); 
     } 
    } 
} 

Form1.designer.cs

namespace testTooltip 
{ 
    partial class Form1 
    { 
     /// <summary> 
     /// Required designer variable. 
     /// </summary> 
     private System.ComponentModel.IContainer components = null; 

     /// <summary> 
     /// Clean up any resources being used. 
     /// </summary> 
     /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param> 
     protected override void Dispose(bool disposing) 
     { 
      if (disposing && (components != null)) 
      { 
       components.Dispose(); 
      } 
      base.Dispose(disposing); 
     } 

     #region Windows Form Designer generated code 

     /// <summary> 
     /// Required method for Designer support - do not modify 
     /// the contents of this method with the code editor. 
     /// </summary> 
     private void InitializeComponent() 
     { 
      this.components = new System.ComponentModel.Container(); 
      this.toolTip1 = new System.Windows.Forms.ToolTip(this.components); 
      this.pictureBox1 = new System.Windows.Forms.PictureBox(); 
      ((System.ComponentModel.ISupportInitialize)(this.pictureBox1)).BeginInit(); 
      this.SuspendLayout(); 
      // 
      // toolTip1 
      // 
      this.toolTip1.AutomaticDelay = 5000; 
      this.toolTip1.OwnerDraw = true; 
      this.toolTip1.ToolTipTitle = "Test"; 
      // 
      // pictureBox1 
      // 
      this.pictureBox1.Image = global::testTooltip.Properties.Resources.screen000; 
      this.pictureBox1.Location = new System.Drawing.Point(29, 12); 
      this.pictureBox1.Name = "pictureBox1"; 
      this.pictureBox1.Size = new System.Drawing.Size(678, 429); 
      this.pictureBox1.TabIndex = 0; 
      this.pictureBox1.TabStop = false; 
      this.pictureBox1.MouseLeave += new System.EventHandler(this.pictureBox1_MouseLeave); 
      this.pictureBox1.MouseMove += new System.Windows.Forms.MouseEventHandler(this.pictureBox1_MouseMove); 
      // 
      // Form1 
      // 
      this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F); 
      this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font; 
      this.ClientSize = new System.Drawing.Size(730, 457); 
      this.Controls.Add(this.pictureBox1); 
      this.DoubleBuffered = true; 
      this.Name = "Form1"; 
      this.Text = "Form1"; 
      ((System.ComponentModel.ISupportInitialize)(this.pictureBox1)).EndInit(); 
      this.ResumeLayout(false); 

     } 

     #endregion 

     private System.Windows.Forms.ToolTip toolTip1; 
     private System.Windows.Forms.PictureBox pictureBox1; 
    } 
} 

这里是预览 http://www.bildites.lv/images/1iftt7hxbqloz0vw949.png ，这是当鼠标离开PictureBox的 http://www.bildites.lv/images/tp47375fpl6q3oguh6e.png

Answer 1

我建议你尝试只用Label控制而不是ToolTip。