System.Gadget.visibilityChanged Event

Article
03/12/2010

Event fired when the gadget visibility changes due to the Windows Sidebar being hidden or displayed.

Syntax

retVal = System.Gadget.visibilityChanged(
  handler
)

Parameters

handler
The name of the function to call when the event is fired.

Remarks

This event can be used to suspend or resume gadget execution as appropriate.

This event is fired only when the gadget is docked to the Sidebar.

This event updates the gadget visible property.

Examples

The following example demonstrates how to use the visibilityChanged event to suspend or resume a timer based on the gadget visibility.

// Delegate for the gadget visibility changed event.
System.Gadget.visibilityChanged = checkVisibility;

// --------------------------------------------------------------------
// Handle the gadget visiblity changed event.
// event = Event argument.
// --------------------------------------------------------------------
function VisibilityChanged(event)
{
    if (!System.Gadget.visible)
    {
        // Stop the timer;
    }
    else
    {
        // Start the timer;
    }
}

Requirements

Minimum supported client	Windows Vista
Minimum supported server	Windows Server 2008
IDL	Sidebar.idl
DLL	Sidebar.Exe version 1.00 or later

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