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最小化时如何将.net应用程序放在系统托盘中？

2023-04-16 03:49:00

how to put an .net application in system tray when minimized?

有人可以建议一个很好的vb.net/c#代码示例，以便在最小化时将应用程序放入系统托盘。

在表单中添加一个NotifyIcon控件，然后使用以下代码：

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private void frm_main_Resize(object sender, EventArgs e)
{
if (this.WindowState == FormWindowState.Minimized)
{
this.ShowInTaskbar = false;
this.Hide();
notifyIcon1.Visible = true;
}
}

private void notifyIcon1_MouseDoubleClick(object sender, MouseEventArgs e)
{
this.Show();
this.WindowState = FormWindowState.Normal;
this.ShowInTaskbar = true;
notifyIcon1.Visible = false;
}

您可能不需要设置ShowInTaskbar属性。

您可以利用一个称为NotifyIcon的内置控件。如图所示，这将创建一个托盘图标。 @Phillip的代码示例有些完整。

虽然有一个陷阱：

您必须重写应用程序主窗体的Dispose方法，以在NotifyIcon上调用Dispose，否则它将在应用程序退出后停留在您的任务栏中。

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public void Form_Dispose(object sender, EventArgs e)
{
if (this.Disposing)
notifyIcon1.Dispose();
}

类似的东西。

您可以通过在表单中??添加NotifyIcon并处理表单的resize事件来做到这一点。要从托盘取回，请处理NotifyIcon \\的双击事件。

如果您想添加一些动画，也可以这样做...

1)添加以下模块：

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Module AnimatedMinimizeToTray
Structure RECT
Public left As Integer
Public top As Integer
Public right As Integer
Public bottom As Integer
End Structure

Structure APPBARDATA
Public cbSize As Integer
Public hWnd As IntPtr
Public uCallbackMessage As Integer
Public uEdge As ABEdge
Public rc As RECT
Public lParam As IntPtr
End Structure

Enum ABMsg
ABM_NEW = 0
ABM_REMOVE = 1
ABM_QUERYPOS = 2
ABM_SETPOS = 3
ABM_GETSTATE = 4
ABM_GETTASKBARPOS = 5
ABM_ACTIVATE = 6
ABM_GETAUTOHIDEBAR = 7
ABM_SETAUTOHIDEBAR = 8
ABM_WINDOWPOSCHANGED = 9
ABM_SETSTATE = 10
End Enum

Enum ABNotify
ABN_STATECHANGE = 0
ABN_POSCHANGED
ABN_FULLSCREENAPP
ABN_WINDOWARRANGE
End Enum

Enum ABEdge
ABE_LEFT = 0
ABE_TOP
ABE_RIGHT
ABE_BOTTOM
End Enum

Public Declare Function SHAppBarMessage Lib"shell32.dll" Alias"SHAppBarMessage" (ByVal dwMessage As Integer, ByRef pData As APPBARDATA) As Integer
Public Const ABM_GETTASKBARPOS As Integer = &H5&
Public Const WM_SYSCOMMAND As Integer = &H112
Public Const SC_MINIMIZE As Integer = &HF020

Public Sub AnimateWindow(ByVal ToTray As Boolean, ByRef frm As Form, ByRef icon As NotifyIcon)
' get the screen dimensions
Dim screenRect As Rectangle = Screen.GetBounds(frm.Location)

' figure out where the taskbar is (and consequently the tray)
Dim destPoint As Point
Dim BarData As APPBARDATA
BarData.cbSize = System.Runtime.InteropServices.Marshal.SizeOf(BarData)
SHAppBarMessage(ABMsg.ABM_GETTASKBARPOS, BarData)
Select Case BarData.uEdge
Case ABEdge.ABE_BOTTOM, ABEdge.ABE_RIGHT
' Tray is to the Bottom Right
destPoint = New Point(screenRect.Width, screenRect.Height)

Case ABEdge.ABE_LEFT
' Tray is to the Bottom Left
destPoint = New Point(0, screenRect.Height)

Case ABEdge.ABE_TOP
' Tray is to the Top Right
destPoint = New Point(screenRect.Width, 0)

End Select

' setup our loop based on the direction
Dim a, b, s As Single
If ToTray Then
a = 0
b = 1
s = 0.05
Else
a = 1
b = 0
s = -0.05
End If

'"animate" the window
Dim curPoint As Point, curSize As Size
Dim startPoint As Point = frm.Location
Dim dWidth As Integer = destPoint.X - startPoint.X
Dim dHeight As Integer = destPoint.Y - startPoint.Y
Dim startWidth As Integer = frm.Width
Dim startHeight As Integer = frm.Height
Dim i As Single
For i = a To b Step s
curPoint = New Point(startPoint.X + i * dWidth, startPoint.Y + i * dHeight)
curSize = New Size((1 - i) * startWidth, (1 - i) * startHeight)
ControlPaint.DrawReversibleFrame(New Rectangle(curPoint, curSize), frm.BackColor, FrameStyle.Thick)
System.Threading.Thread.Sleep(15)
ControlPaint.DrawReversibleFrame(New Rectangle(curPoint, curSize), frm.BackColor, FrameStyle.Thick)
Next

If ToTray Then
' hide the form and show the notifyicon
frm.Hide()
icon.Visible = True
Else
' hide the notifyicon and show the form
icon.Visible = False
frm.Show()
End If

End Sub
End Module

2)在表单中添加一个NotifyIcon并添加以下内容：

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Protected Overrides Sub WndProc(ByRef m As System.Windows.Forms.Message)
If m.Msg = WM_SYSCOMMAND AndAlso m.WParam.ToInt32() = SC_MINIMIZE Then
AnimateWindow(True, Me, NotifyIcon1)
Exit Sub
End If
MyBase.WndProc(m)
End Sub

Private Sub NotifyIcon1_DoubleClick(ByVal sender As Object, ByVal e As System.EventArgs) Handles NotifyIcon1.DoubleClick
AnimateWindow(False, Me, NotifyIcon1)
End Sub

应用程序最小化代码示例表单