C# WPF QQ新訊息托盤懸浮窗效果實現
阿新 • • 發佈：2018-11-07
原文:
C# WPF QQ新訊息托盤懸浮窗效果實現
今天在做一個專案的時候需要這麼一個效果，但是網上找了一會發現並沒有現成的給我參考（複製），但是呢，我千（到）辛（處）萬（抄）苦（襲）想（復）破（制）頭（粘）腦（貼）終於還是給做出來了~嘿嘿嘿
QQ新訊息懸浮窗即：QQ有新訊息時托盤圖示會閃動，此時移動滑鼠到托盤圖示上就會顯示一個彈框了，那麼呢我把這個彈框稱為“QQ新訊息托盤懸浮窗”。當滑鼠從托盤圖示移走後彈框隱藏，我們要做的效果就是這樣的。
專案效果圖：
涉及到的內容主要有：Popup，win32api，DispatcherTimer（定時器）。
新建wpf專案，命名為qqnotifybar
MainWindow.xaml程式碼：
<Window x:Class="qqnotifybar.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"xmlns:local="clr-namespace:qqnotifybar" mc:Ignorable="d" Title="MainWindow" Height="350" Width="525"> <Grid> <Popup Name="NotifyBar" AllowsTransparency="True" Placement="Absolute"> <Grid Name="NotifyBar_Grid" Width="285" Height="126"Background="Red"> <!--為了能更清晰地看到托盤圖示是否在彈框的中間位置加一個Grid--> <Grid Background="Yellow" Width="5" Height="126" HorizontalAlignment="Center"></Grid> </Grid> </Popup> </Grid> </Window>
後臺程式碼：
using System; using System.Collections.Generic; using System.Linq; using System.Reflection; using System.Runtime.InteropServices; using System.Text; using System.Threading.Tasks; using System.Windows; using System.Windows.Controls; using System.Windows.Data; using System.Windows.Documents; using System.Windows.Forms; using System.Windows.Input; using System.Windows.Media; using System.Windows.Media.Imaging; using System.Windows.Navigation; using System.Windows.Shapes; using System.Windows.Threading; namespace qqnotifybar { /// <summary> /// MainWindow.xaml 的互動邏輯 /// </summary> public partial class MainWindow : Window { //winform托盤圖示元件 NotifyIcon notifyicon; //計時器 DispatcherTimer notifybar_timer; //滑鼠是否在通知欄內變數 bool NotifyBar_IsMouseEnter = false; public MainWindow() { InitializeComponent(); //初始化托盤圖示 notifyicon = new NotifyIcon(); notifyicon.Icon = System.Drawing.Icon.ExtractAssociatedIcon(System.Windows.Forms.Application.ExecutablePath); notifyicon.Text = "Dove"; notifyicon.Visible = true; notifyicon.MouseMove += notifyicon_mousemove; //初始化計時器 notifybar_timer = new DispatcherTimer(); notifybar_timer.Interval = TimeSpan.FromSeconds(1); notifybar_timer.Tick += notifybar_timer_tick; //給彈框中的grid加上滑鼠移入移出事件 NotifyBar_Grid.MouseEnter += NotifyBar_MouseEnter; NotifyBar_Grid.MouseLeave += NotifyBar_MouseLeave; } #region win32api #region 獲取滑鼠指標相對於螢幕的座標 [StructLayout(LayoutKind.Sequential)] public struct POINT { public int x; public int y; public POINT(int x, int y) { this.x = x; this.y = y; } } [DllImport("user32.dll", CharSet = CharSet.Auto)] public static extern bool GetCursorPos(out POINT pt); #endregion #region 獲取托盤圖示的位置 //程式碼來自於：http://blog.csdn.net/haoqi9999/article/details/76527981?locationNum=6&fps=1 public class RG { public int Left { get; set; } public int Top { get; set; } public int Widht { get; set; } public int Height { get; set; } public RG(int left, int top, int widht, int height) { Left = left; Top = top; Widht = widht; Height = height; } public override string ToString() { return "Left:" + Left + ",Top:" + Top + ",Width:" + Widht + ",Height:" + Height; } } public static RG GetIconRect(NotifyIcon icon) { RECT rect = new RECT(); NOTIFYICONIDENTIFIER notifyIcon = new NOTIFYICONIDENTIFIER(); notifyIcon.cbSize = Marshal.SizeOf(notifyIcon); //use hWnd and id of NotifyIcon instead of guid is needed notifyIcon.hWnd = GetHandle(icon); notifyIcon.uID = GetId(icon); int hresult = Shell_NotifyIconGetRect(ref notifyIcon, out rect); //rect now has the position and size of icon return new RG(rect.left, rect.top, rect.right - rect.left, rect.bottom - rect.top); } [StructLayout(LayoutKind.Sequential)] private struct RECT { public Int32 left; public Int32 top; public Int32 right; public Int32 bottom; } [StructLayout(LayoutKind.Sequential)] private struct NOTIFYICONIDENTIFIER { public Int32 cbSize; public IntPtr hWnd; public Int32 uID; public Guid guidItem; } [DllImport("shell32.dll", SetLastError = true)] private static extern int Shell_NotifyIconGetRect([In]ref NOTIFYICONIDENTIFIER identifier, [Out]out RECT iconLocation); private static FieldInfo windowField = typeof(NotifyIcon).GetField("window", System.Reflection.BindingFlags.NonPublic | System.Reflection.BindingFlags.Instance); private static IntPtr GetHandle(NotifyIcon icon) { if (windowField == null) throw new InvalidOperationException("[Useful error message]"); NativeWindow window = windowField.GetValue(icon) as NativeWindow; if (window == null) throw new InvalidOperationException("[Useful error message]"); // should not happen? return window.Handle; } private static FieldInfo idField = typeof(NotifyIcon).GetField("id", System.Reflection.BindingFlags.NonPublic | System.Reflection.BindingFlags.Instance); private static int GetId(NotifyIcon icon) { if (idField == null) throw new InvalidOperationException("[Useful error message]"); return (int)idField.GetValue(icon); } #endregion #endregion #region 操作通知欄 //定時器方法 private void notifybar_timer_tick(object sender, EventArgs e) { POINT pt = new POINT(); //獲取滑鼠的位置 GetCursorPos(out pt); //獲取托盤圖示的位置 RG rg = GetIconRect(notifyicon); if (pt.x > rg.Left && pt.x < (rg.Left + rg.Widht) && pt.y > rg.Top && pt.y < (rg.Top + rg.Height)) { //滑鼠指標還在托盤圖示中，不需要處理 } else { //滑鼠移除托盤圖示區域 //停止計時器 notifybar_timer.Stop(); //判斷指標是否移入了彈框popup的區域 if (NotifyBar_IsMouseEnter == false) { //不是則關閉popup NotifyBar.IsOpen = false; } } } //托盤圖示滑鼠移入 private void notifyicon_mousemove(object sender, System.Windows.Forms.MouseEventArgs e) { //滑鼠移入托盤圖示後顯示彈框 NotifyBar.IsOpen = true; //如果計時器沒有啟動則啟動 if (notifybar_timer.IsEnabled == false) { notifybar_timer.Start(); } //獲取托盤圖示位置 RG rg = GetIconRect(notifyicon); //計算彈框的位置，使其在托盤圖示的正上方中間的位置 //彈框（popup）距離螢幕上方的位置 = 托盤距離螢幕上方位置 - 彈框的實際高度 NotifyBar.VerticalOffset = rg.Top - NotifyBar_Grid.ActualHeight; //這裡計算使彈框在托盤圖示中間的位置 NotifyBar.HorizontalOffset = rg.Left - (NotifyBar_Grid.ActualWidth / 2) + (rg.Widht / 2); } private void NotifyBar_MouseEnter(object sender, System.Windows.Input.MouseEventArgs e) { //滑鼠移入彈框GRID區域了 NotifyBar_IsMouseEnter = true; } private void NotifyBar_MouseLeave(object sender, System.Windows.Input.MouseEventArgs e) { //滑鼠離開了彈框的GRID區域 //判斷滑鼠是否曾經移入到彈框GRID區域中過 if (NotifyBar_IsMouseEnter) { //是，關閉。 NotifyBar.IsOpen = false; } //重置滑鼠是否移入彈框GRID區域變數值 NotifyBar_IsMouseEnter = false; } #endregion } }
程式碼已經寫有超級詳細的註釋了，部落格就不多廢話了。核心程式碼（獲取托盤圖示位置）的來源也在程式碼註釋標註了，下面也是給大家打包了專案方便下載。
提醒：在正式專案中要將popup換成新的window，因為當popup所在窗體不具備焦點時，popup內的控制元件無法正常互動。2018年1月23日09:33:08
專案下載：