2

所以我试图在屏幕上的某个点创建一个工具提示。

ToolTip tip = new ToolTip();
tip.Show("foobar", **IWin32Window window**, new Point(100, 100))

问题是我不知道window在上面插入什么作为参数。我的应用程序完全在系统托盘之外运行，并且没有其他 GUI 元素。它被称为notifyIcon1。那是通过创建的Form1。当插入到tip.Show() 时，这些值都不起作用。

如何仅使用系统托盘在屏幕上的任何位置生成工具提示？

谢谢。

4

2 回答 2

2

IWin32Window 接口是一个简单的接口，它只提供一个IntPtr名为Handle. 可能这样的事情应该起作用：

using System;
using System.Runtime.InteropServices;
using System.Windows.Forms;

namespace SO_ToolTip
{
    public partial class Form1 : Form
    {
        [DllImport("user32.dll")]
        public static extern IntPtr GetDesktopWindow();

        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            WindowWrapper windowWrapper = new WindowWrapper(GetDesktopWindow());
            ToolTip toolTip = new ToolTip();
            toolTip.Show("Blah blah... Blah blah... Blah blah...", windowWrapper, 1, 1, 10000);
        }
    }

    public class WindowWrapper : IWin32Window
    {
        public WindowWrapper(IntPtr handle)
        {
            Handle = handle;
        }

        public IntPtr Handle { get; protected set; }
    }
}

但事实并非如此。它抱怨 NullReferenceException，我没有进一步调试。这确实有效：

...
private void button1_Click(object sender, EventArgs e)
{
    ToolTip toolTip = new ToolTip();
    toolTip.Show("Blah blah... Blah blah... Blah blah...", this, 1, 1, 10000);
}
...

虽然位置是相对于当前形式的。也许这会让你朝着正确的方向前进。

编辑：即使这也不起作用，所以我不确定这是否是 WindowWrapper 的问题（如何？）或什么：

...
private void button1_Click(object sender, EventArgs e)
{
    WindowWrapper windowWrapper = new WindowWrapper(this.Handle);
    ToolTip toolTip = new ToolTip();
    toolTip.Show("Blah blah... Blah blah... Blah blah...", windowWrapper, 1, 1, 10000);
}
...

给你，使用一个透明的，最大化的形式，你BringToFront()在展示之前ToolTip

表格 1 代码：

using System;
using System.Windows.Forms;

namespace SO_ToolTip
{
    public partial class Form1 : Form
    {
        Random _Random = new Random();
        ToolTip _ToolTip = new ToolTip();

        public Form1()
        {
            InitializeComponent();
        }

        private void timer1_Tick(object sender, EventArgs e)
        {
            BringToFront();
            _ToolTip.Show("Blah blah... Blah blah... Blah blah...", this, _Random.Next(0, Width), _Random.Next(0, Height), 10000);
        }
    }
}

Form1 设计器代码：因此您可以看到表单属性：

namespace SO_ToolTip
{
    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.timer1 = new System.Windows.Forms.Timer(this.components);
            this.SuspendLayout();
            // 
            // timer1
            // 
            this.timer1.Enabled = true;
            this.timer1.Interval = 1000;
            this.timer1.Tick += new System.EventHandler(this.timer1_Tick);
            // 
            // Form1
            // 
            this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
            this.ClientSize = new System.Drawing.Size(284, 264);
            this.ControlBox = false;
            this.MaximizeBox = false;
            this.MinimizeBox = false;
            this.Name = "Form1";
            this.Opacity = 0;
            this.ShowIcon = false;
            this.ShowInTaskbar = false;
            this.WindowState = System.Windows.Forms.FormWindowState.Maximized;
            this.ResumeLayout(false);

        }

        #endregion

        private System.Windows.Forms.Timer timer1;

    }
}
于 2010-02-07T04:23:45.873 回答
1

参加晚会：

如果您喜欢/需要 WPF 窗口：

    private class ToolTipWPFWindow : Window
    {
        private readonly TextBlock m_txtToDisplay = new TextBlock();
        private readonly DispatcherTimer m_timer = new DispatcherTimer();

        public ToolTipWindow(string p_strStringToDisplay, int p_intXOnScreen = 0, int p_intYOnScreen = 0, double p_dblDurationInMilliSeconds = 1500)
        {
            if (p_intXOnScreen == 0 && p_intYOnScreen == 0)
            {
                p_intXOnScreen = System.Windows.Forms.Cursor.Position.X;
                p_intYOnScreen = System.Windows.Forms.Cursor.Position.Y;
            }

            m_txtToDisplay.Text = p_strStringToDisplay;
            m_txtToDisplay.Margin = new Thickness(3);

            Background = new SolidColorBrush(Colors.LightGoldenrodYellow);

            ShowInTaskbar = false;
            ResizeMode = System.Windows.ResizeMode.NoResize;
            Topmost = true;

            // Location on screen - As Set
            WindowStartupLocation = WindowStartupLocation.Manual;
            Left = p_intXOnScreen;
            Top = p_intYOnScreen;

            WindowStyle = WindowStyle.None;
            SizeToContent = SizeToContent.WidthAndHeight;

            Content = m_txtToDisplay;
            m_timer.Interval = TimeSpan.FromMilliseconds(p_dblDurationInMilliSeconds);
            m_timer.Tick += timer_Tick;
            m_timer.Start();
        }

        private void timer_Tick(object sender, EventArgs e)
        {
            if (m_timer != null)
            {
                m_timer.Stop();
                m_timer.Tick -= timer_Tick;
            }

            Close();
        }

用法：

// Display the ToolTip Window to the right of the Cursor
int intX = Cursor.Position.X + 20;
int intY = Cursor.Position.Y;

ToolTipWindow wpfWindow = new ToolTipWindow("Text To Display", intX, intY, 800);
wpfWindow.Show();

结果：

wpf 工具提示包含

我没有实现鼠标离开事件，因为我使用了较短的显示持续时间。

于 2014-01-08T08:17:54.590 回答