Class

TrayItem

Description

Used to add items to the System Tray. Windows and Linux only.

Properties

Name	Type	Read-Only
Handle	Ptr	✓
Icon	Picture
ToolTip	String

Events

Name	Parameters	Returns
Action	Cause As Integer

Property descriptions

TrayItem.Handle

Handle As Ptr

Returns the window handle that the TrayItem belongs to on Windows and the GtkStatusIcon widget on Linux. On Windows, the first TrayItem has a ID of 1000 and subsequent adds will increment this ID.

This property is read-only.

TrayItem.Icon

Icon As Picture

The icon displayed as the TrayItem.

TrayItem.ToolTip

ToolTip As String

Help associated with the TrayItem.

Event descriptions

TrayItem.Action

Action(Cause As Integer)

The user has clicked on the TrayItem.

The parameter Cause indicates the type of click. To determine the kind of click, use the following TrayItem class constants:

TrayItem Class Constant
DoubleClick
LeftMouseButton
RightMouseButton

Notes

See also the Application.AddTrayItem method for information on adding a TrayItem.

Sample code

Add a class to your project (call it AppTrayItem) and change its super to TrayItem. Also add a property to the App class:

Tray As AppTrayItem

This code instantiates it in the App.Opening event handler:

Tray = New AppTrayItem
If Not Self.AddTrayItem(Tray) Then
  // There was an error adding the TrayItem
End If

The following code in the Action event of the AppTrayItem handles mouse clicks and double-clicks:

Select Case cause
Case TrayItem.LeftMouseButton
  MessageBox("Left button clicked")
Case TrayItem.DoubleClick
  MessageBox("Double-clicked")
Case TrayItem.RightMouseButton
  Var trayMenu As New DesktopMenuItem
  trayMenu.AddMenu(New DesktopMenuItem("About"))
  trayMenu.AddMenu(New DesktopMenuItem("Exit"))

  Var result As DesktopMenuItem
  result = trayMenu.PopUp

  Select Case result.Text
  Case "About"
    MessageBox("The TrayItem example")
  Case "Exit"
    Quit
  End Select
End Select

When the application quits, you call the RemoveTrayItem method of the DesktopApplication class. This goes in the Close event handler of the App object.

If Tray <> Nil Then
  Self.RemoveTrayItem(Tray)
End If

Compatibility

All project types on all supported operating systems.