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根据事件更改托盘图标

powershell winforms

Wakan Tanka · 技术社区 · 5 年前

我有代码,将开始在托盘(任务栏)进程。右击托盘图标后,将显示菜单。单击第一个菜单项后,winform窗口开始。此winform显示记事本进程的状态。我的目标是根据记事本的状态更改托盘图标(如果记事本正在运行,则显示 online.ico 否则显示 offline.ico ). 如果我理解正确,那么我的代码正在启动/停止 System.Windows.Forms.Timer 每次打开/关闭winform窗口时,我不确定这是否是最好的方法。我想我需要在“外面”启动计时器 OnMenuItem1ClickEventFn 所以它可以重新加载 *.ico 文件夹。以下剧本的灵感来源于 this 地点:

Add-Type -AssemblyName System.Windows.Forms    
Add-Type -AssemblyName System.Drawing

function Test-Notepad {
    [bool](Get-Process -Name 'notepad' -ErrorAction SilentlyContinue)
}


function OnMenuItem1ClickEventFn () {
    # Build Label object
    $Label = New-Object System.Windows.Forms.Label
        $Label.Name = "labelName"
        $Label.AutoSize = $True

    # Set and start timer
    $timer = New-Object System.Windows.Forms.Timer
    $timer.Interval = 1000
    $timer.Add_Tick({
        if ($Label){
            $Label.Text = if (Test-Notepad) { "Notepad is running" } else { "Notepad is NOT running" }
        }
    })
    $timer.Start()


    # Build Form object
    $Form = New-Object System.Windows.Forms.Form
        $Form.Text = "My Form"
        $Form.Size = New-Object System.Drawing.Size(200,200)
        $Form.StartPosition = "CenterScreen"
        $Form.Topmost = $True
        $Form.Add_Closing({ $timer.Dispose() })  # Dispose() also stops the timer.
        $Form.Controls.Add($Label)               # Add label to form
        $form.ShowDialog()| Out-Null             # Show the Form
}


function OnMenuItem4ClickEventFn () {
    $Main_Tool_Icon.Visible = $false
    $window.Close()
    Stop-Process $pid
}


function create_taskbar_menu{
    # Create menu items
    $Main_Tool_Icon = New-Object System.Windows.Forms.NotifyIcon
    $Main_Tool_Icon.Text = "Icon Text"
    $Main_Tool_Icon.Icon = $icon
    $Main_Tool_Icon.Visible = $true

    $MenuItem1 = New-Object System.Windows.Forms.MenuItem
    $MenuItem1.Text = "Menu Item 1"

    $MenuItem2 = New-Object System.Windows.Forms.MenuItem
    $MenuItem2.Text = "Menu Item 2"

    $MenuItem3 = New-Object System.Windows.Forms.MenuItem
    $MenuItem3.Text = "Menu Item 3"

    $MenuItem4 = New-Object System.Windows.Forms.MenuItem
    $MenuItem4.Text = "Exit"


    # Add menu items to context menu
    $contextmenu = New-Object System.Windows.Forms.ContextMenu
    $Main_Tool_Icon.ContextMenu = $contextmenu
    $Main_Tool_Icon.contextMenu.MenuItems.AddRange($MenuItem1)
    $Main_Tool_Icon.contextMenu.MenuItems.AddRange($MenuItem2)
    $Main_Tool_Icon.contextMenu.MenuItems.AddRange($MenuItem3)
    $Main_Tool_Icon.contextMenu.MenuItems.AddRange($MenuItem4)


    $MenuItem4.add_Click({OnMenuItem4ClickEventFn})
    $MenuItem1.add_Click({OnMenuItem1ClickEventFn})
}


$Current_Folder = split-path $MyInvocation.MyCommand.Path

# Add assemblies for WPF and Mahapps
[System.Reflection.Assembly]::LoadWithPartialName('System.Windows.Forms')    | out-null
[System.Reflection.Assembly]::LoadWithPartialName('presentationframework')   | out-null
[System.Reflection.Assembly]::LoadWithPartialName('System.Drawing')          | out-null
[System.Reflection.Assembly]::LoadWithPartialName('WindowsFormsIntegration') | out-null
# [System.Reflection.Assembly]::LoadFrom("Current_Folder\assembly\MahApps.Metro.dll")  | out-null

# Choose an icon to display in the systray
$icon = [System.Drawing.Icon]::ExtractAssociatedIcon("$Current_Folder/icons/online.ico")
# use this icon when notepad is not running
# $icon = [System.Drawing.Icon]::ExtractAssociatedIcon("$Current_Folder/icons/offline.ico")


create_taskbar_menu

# Make PowerShell Disappear - Thanks Chrissy
$windowcode = '[DllImport("user32.dll")] public static extern bool ShowWindowAsync(IntPtr hWnd, int nCmdShow);'
$asyncwindow = Add-Type -MemberDefinition $windowcode -name Win32ShowWindowAsync -namespace Win32Functions -PassThru
$null = $asyncwindow::ShowWindowAsync((Get-Process -PID $pid).MainWindowHandle, 0)




# Use a Garbage colection to reduce Memory RAM
# https://dmitrysotnikov.wordpress.com/2012/02/24/freeing-up-memory-in-powershell-using-garbage-collector/
# https://docs.microsoft.com/fr-fr/dotnet/api/system.gc.collect?view=netframework-4.7.2
[System.GC]::Collect()

# Create an application context for it to all run within - Thanks Chrissy
# This helps with responsiveness, especially when clicking Exit - Thanks Chrissy
$appContext = New-Object System.Windows.Forms.ApplicationContext
[void][System.Windows.Forms.Application]::Run($appContext)

编辑:基于@BACON答案的工作方案

# Toggle following two lines
Set-StrictMode -Version Latest
# Set-StrictMode -Off

Add-Type -AssemblyName System.Windows.Forms    
Add-Type -AssemblyName System.Drawing

function Test-Notepad {
    [bool](Get-Process -Name 'notepad' -ErrorAction SilentlyContinue)
}


function OnMenuItem1ClickEventFn () {
    # Build Form object
    $Form = New-Object System.Windows.Forms.Form
        $Form.Text = "My Form"
        $Form.Size = New-Object System.Drawing.Size(200,200)
        $Form.StartPosition = "CenterScreen"
        $Form.Topmost = $True
        $Form.Controls.Add($Label)               # Add label to form
        $form.ShowDialog()| Out-Null             # Show the Form
}


function OnMenuItem4ClickEventFn () {
    $Main_Tool_Icon.Visible = $false

    [System.Windows.Forms.Application]::Exit()
}


function create_taskbar_menu{
    # Create menu items
    $MenuItem1 = New-Object System.Windows.Forms.MenuItem
    $MenuItem1.Text = "Menu Item 1"

    $MenuItem2 = New-Object System.Windows.Forms.MenuItem
    $MenuItem2.Text = "Menu Item 2"

    $MenuItem3 = New-Object System.Windows.Forms.MenuItem
    $MenuItem3.Text = "Menu Item 3"

    $MenuItem4 = New-Object System.Windows.Forms.MenuItem
    $MenuItem4.Text = "Exit"


    # Add menu items to context menu
    $contextmenu = New-Object System.Windows.Forms.ContextMenu
    $Main_Tool_Icon.ContextMenu = $contextmenu
    $Main_Tool_Icon.contextMenu.MenuItems.AddRange($MenuItem1)
    $Main_Tool_Icon.contextMenu.MenuItems.AddRange($MenuItem2)
    $Main_Tool_Icon.contextMenu.MenuItems.AddRange($MenuItem3)
    $Main_Tool_Icon.contextMenu.MenuItems.AddRange($MenuItem4)


    $MenuItem4.add_Click({OnMenuItem4ClickEventFn})
    $MenuItem1.add_Click({OnMenuItem1ClickEventFn})
}


$Current_Folder = split-path $MyInvocation.MyCommand.Path

# Add assemblies for WPF and Mahapps
[System.Reflection.Assembly]::LoadWithPartialName('System.Windows.Forms')    | out-null
[System.Reflection.Assembly]::LoadWithPartialName('presentationframework')   | out-null
[System.Reflection.Assembly]::LoadWithPartialName('System.Drawing')          | out-null
[System.Reflection.Assembly]::LoadWithPartialName('WindowsFormsIntegration') | out-null
# [System.Reflection.Assembly]::LoadFrom("Current_Folder\assembly\MahApps.Metro.dll")  | out-null

# Choose an icon to display in the systray
$onlineIcon = [System.Drawing.Icon]::ExtractAssociatedIcon("$Current_Folder/icons/online.ico")
# use this icon when notepad is not running
$offlineIcon = [System.Drawing.Icon]::ExtractAssociatedIcon("$Current_Folder/icons/offline.ico")

$Main_Tool_Icon = New-Object System.Windows.Forms.NotifyIcon
$Main_Tool_Icon.Text = "Icon Text"
$Main_Tool_Icon.Icon = if (Test-Notepad) { $onlineIcon } else { $offlineIcon }
$Main_Tool_Icon.Visible = $true

# Build Label object
$Label = New-Object System.Windows.Forms.Label
    $Label.Name = "labelName"
    $Label.AutoSize = $True

# Initialize the timer
$timer = New-Object System.Windows.Forms.Timer
$timer.Interval = 1000
$timer.Add_Tick({
    if ($Label){
        $Label.Text, $Main_Tool_Icon.Icon = if (Test-Notepad) {
            "Notepad is running", $onlineIcon
        } else {
            "Notepad is NOT running", $offlineIcon
        }
    }
})
$timer.Start()

create_taskbar_menu

# Make PowerShell Disappear - Thanks Chrissy
$windowcode = '[DllImport("user32.dll")] public static extern bool ShowWindowAsync(IntPtr hWnd, int nCmdShow);'
$asyncwindow = Add-Type -MemberDefinition $windowcode -name Win32ShowWindowAsync -namespace Win32Functions -PassThru
$null = $asyncwindow::ShowWindowAsync((Get-Process -PID $pid).MainWindowHandle, 0)

# Use a Garbage colection to reduce Memory RAM
# https://dmitrysotnikov.wordpress.com/2012/02/24/freeing-up-memory-in-powershell-using-garbage-collector/
# https://docs.microsoft.com/fr-fr/dotnet/api/system.gc.collect?view=netframework-4.7.2
[System.GC]::Collect()

# Create an application context for it to all run within - Thanks Chrissy
# This helps with responsiveness, especially when clicking Exit - Thanks Chrissy
$appContext = New-Object System.Windows.Forms.ApplicationContext
try
{
    [System.Windows.Forms.Application]::Run($appContext)    
}
finally
{
    foreach ($component in $timer, $Main_Tool_Icon, $offlineIcon, $onlineIcon, $appContext)
    {
        # The following test returns $false if $component is
        # $null, which is really what we're concerned about
        if ($component -is [System.IDisposable])
        {
            $component.Dispose()
        }
    }

    Stop-Process -Id $PID
}

0 回复 | 直到 5 年前

Lance U. Matthews 5 年前

您已经有代码来设置 NotifyIcon ...

$Main_Tool_Icon.Icon = $icon

…并定义要使用的图标。。。

# Choose an icon to display in the systray
$icon = [System.Drawing.Icon]::ExtractAssociatedIcon("$Current_Folder/icons/online.ico")
# use this icon when notepad is not running
# $icon = [System.Drawing.Icon]::ExtractAssociatedIcon("$Current_Folder/icons/offline.ico")

…并定期测试 Notepad 正在运行并正确响应。。。

$timer.Add_Tick({
    if ($Label){
        $Label.Text = if (Test-Notepad) { "Notepad is running" } else { "Notepad is NOT running" }
    }
})

你只需要把它们和一些额外的调整结合起来。。。

用描述性名称将每个图标存储在自己的变量中,以便在它们之间轻松切换。
$Main_Tool_Icon 需要在 create_taskbar_menu 这样就可以在 OnMenuItem1ClickEventFn . 我将创建和初始化移到调用 创建任务栏菜单 ,但也可以在 创建任务栏菜单 或者其他功能。

最后看起来像这样。。。

# Choose an icon to display in the systray
$onlineIcon = [System.Drawing.Icon]::ExtractAssociatedIcon("$Current_Folder/icons/online.ico")
# use this icon when notepad is not running
$offlineIcon = [System.Drawing.Icon]::ExtractAssociatedIcon("$Current_Folder/icons/offline.ico")

$Main_Tool_Icon = New-Object System.Windows.Forms.NotifyIcon
$Main_Tool_Icon.Text = "Icon Text"
$Main_Tool_Icon.Icon = if (Test-Notepad) { $onlineIcon } else { $offlineIcon }
$Main_Tool_Icon.Visible = $true

create_taskbar_menu

…还有这个。。。

$timer.Add_Tick({
    if ($Label){
        # Change the text and icon with one test
        $Label.Text, $Main_Tool_Icon.Icon = if (Test-Notepad) {
            "Notepad is running", $onlineIcon
        } else {
            "Notepad is NOT running", $offlineIcon
        }
    }
})

您将看到一个图标是基于 Test-Notepad 都是什么时候 $Main\u工具\u图标 当 Tick 事件已引发。

至于处理 $timer 什么时候 $Form 正在关闭。。。

$Form.Add_Closing({ $timer.Dispose() })

……就是这样几乎一个合适的地方,但是。。。

这个 Closing event 基本上是在窗体请求关闭;它提供了取消该请求的机会。这个 Closed event 会更合适,因为它是在窗体实际关闭时引发的。
文件表明 结束 和 关闭 事件已过时。使用 FormClosed event 相反。

另外,在 OnMenuItem4ClickEventFn 你在打电话吗 $window.Close() 尽管 $window 我想你的意思是 $Form.Close() . 另一个我认为稍微干净一点的方法是点击 Exit 菜单项 exit the Windows Forms application loop ...

function OnMenuItem4ClickEventFn () {
    $Main_Tool_Icon.Visible = $false

    [System.Windows.Forms.Application]::Exit()
}

…然后您可以将清理/拆卸代码放入 finally 在脚本末尾阻止。。。

try
{
    # This call returns when [System.Windows.Forms.Application]::Exit() is called
    [System.Windows.Forms.Application]::Run($appContext)
}
finally
{
    # $timer would also have to be defined at the script scope
    # (outside of OnMenuItem1ClickEventFn) for this to work
    $timer.Dispose()

    # $Form, $Label, $Main_Tool_Icon, $onlineIcon, etc. would all be candidates for disposal...

    # Exit the entire PowerShell process
    Stop-Process $pid
}

以下是完整的代码,其中包括上述更改,并为我工作。。。

Add-Type -AssemblyName System.Windows.Forms    
Add-Type -AssemblyName System.Drawing

function Test-Notepad {
    [bool](Get-Process -Name 'notepad' -ErrorAction SilentlyContinue)
}


function OnMenuItem1ClickEventFn () {
    $timer.Start()

    # Build Form object
    $Form = New-Object System.Windows.Forms.Form
        $Form.Text = "My Form"
        $Form.Size = New-Object System.Drawing.Size(200,200)
        $Form.StartPosition = "CenterScreen"
        $Form.Topmost = $True
        $Form.Add_Closing({ $timer.Dispose() })  # Dispose() also stops the timer.
        $Form.Controls.Add($Label)               # Add label to form
        $form.ShowDialog()| Out-Null             # Show the Form
}


function OnMenuItem4ClickEventFn () {
    $Main_Tool_Icon.Visible = $false

    [System.Windows.Forms.Application]::Exit()
}


function create_taskbar_menu{
    # Create menu items
    $MenuItem1 = New-Object System.Windows.Forms.MenuItem
    $MenuItem1.Text = "Menu Item 1"

    $MenuItem2 = New-Object System.Windows.Forms.MenuItem
    $MenuItem2.Text = "Menu Item 2"

    $MenuItem3 = New-Object System.Windows.Forms.MenuItem
    $MenuItem3.Text = "Menu Item 3"

    $MenuItem4 = New-Object System.Windows.Forms.MenuItem
    $MenuItem4.Text = "Exit"


    # Add menu items to context menu
    $contextmenu = New-Object System.Windows.Forms.ContextMenu
    $Main_Tool_Icon.ContextMenu = $contextmenu
    $Main_Tool_Icon.contextMenu.MenuItems.AddRange($MenuItem1)
    $Main_Tool_Icon.contextMenu.MenuItems.AddRange($MenuItem2)
    $Main_Tool_Icon.contextMenu.MenuItems.AddRange($MenuItem3)
    $Main_Tool_Icon.contextMenu.MenuItems.AddRange($MenuItem4)


    $MenuItem4.add_Click({OnMenuItem4ClickEventFn})
    $MenuItem1.add_Click({OnMenuItem1ClickEventFn})
}


$Current_Folder = split-path $MyInvocation.MyCommand.Path

# Add assemblies for WPF and Mahapps
[System.Reflection.Assembly]::LoadWithPartialName('System.Windows.Forms')    | out-null
[System.Reflection.Assembly]::LoadWithPartialName('presentationframework')   | out-null
[System.Reflection.Assembly]::LoadWithPartialName('System.Drawing')          | out-null
[System.Reflection.Assembly]::LoadWithPartialName('WindowsFormsIntegration') | out-null
# [System.Reflection.Assembly]::LoadFrom("Current_Folder\assembly\MahApps.Metro.dll")  | out-null

# Choose an icon to display in the systray
$onlineIcon = [System.Drawing.Icon]::ExtractAssociatedIcon("$Current_Folder/icons/online.ico")
# use this icon when notepad is not running
$offlineIcon = [System.Drawing.Icon]::ExtractAssociatedIcon("$Current_Folder/icons/offline.ico")

$Main_Tool_Icon = New-Object System.Windows.Forms.NotifyIcon
$Main_Tool_Icon.Text = "Icon Text"
$Main_Tool_Icon.Icon = if (Test-Notepad) { $onlineIcon } else { $offlineIcon }
$Main_Tool_Icon.Visible = $true

# Build Label object
$Label = New-Object System.Windows.Forms.Label
    $Label.Name = "labelName"
    $Label.AutoSize = $True

# Initialize the timer
$timer = New-Object System.Windows.Forms.Timer
$timer.Interval = 1000
$timer.Add_Tick({
    if ($Label){
        $Label.Text, $Main_Tool_Icon.Icon = if (Test-Notepad) {
            "Notepad is running", $onlineIcon
        } else {
            "Notepad is NOT running", $offlineIcon
        }
    }
})

create_taskbar_menu

# Make PowerShell Disappear - Thanks Chrissy
$windowcode = '[DllImport("user32.dll")] public static extern bool ShowWindowAsync(IntPtr hWnd, int nCmdShow);'
$asyncwindow = Add-Type -MemberDefinition $windowcode -name Win32ShowWindowAsync -namespace Win32Functions -PassThru
$null = $asyncwindow::ShowWindowAsync((Get-Process -PID $pid).MainWindowHandle, 0)

# Use a Garbage colection to reduce Memory RAM
# https://dmitrysotnikov.wordpress.com/2012/02/24/freeing-up-memory-in-powershell-using-garbage-collector/
# https://docs.microsoft.com/fr-fr/dotnet/api/system.gc.collect?view=netframework-4.7.2
[System.GC]::Collect()

# Create an application context for it to all run within - Thanks Chrissy
# This helps with responsiveness, especially when clicking Exit - Thanks Chrissy
$appContext = New-Object System.Windows.Forms.ApplicationContext
try
{
    [System.Windows.Forms.Application]::Run($appContext)    
}
finally
{
    foreach ($component in $timer, $form, $Main_Tool_Icon, $offlineIcon, $onlineIcon, $appContext)
    {
        # The following test returns $false if $component is
        # $null, which is really what we're concerned about
        if ($component -is [System.IDisposable])
        {
            $component.Dispose()
        }
    }

    Stop-Process -Id $PID
}