This documentation is archived and is not being maintained.

TrackBarRenderer.IsSupported Property

Gets a value indicating whether the TrackBarRenderer class can be used to draw a track bar with visual styles.

Namespace:  System.Windows.Forms
Assembly:  System.Windows.Forms (in System.Windows.Forms.dll)

public static bool IsSupported { get; }

Property Value

Type: System.Boolean
true if the user has enabled visual styles in the operating system and visual styles are applied to the client area of application windows; otherwise, false.

If this property is false, the methods of this class will throw an InvalidOperationException.

The following code example uses the IsSupported property to determine whether to use the TrackBarRenderer methods. This code example is part of a larger example provided for the TrackBarRenderer class.

// Draw the track bar.
protected override void OnPaint(PaintEventArgs e)
    if (!TrackBarRenderer.IsSupported)
        this.Parent.Text = "CustomTrackBar Disabled";

    this.Parent.Text = "CustomTrackBar Enabled";
        thumbRectangle, thumbState);
        ticksRectangle, numberTicks, EdgeStyle.Raised);

// Determine whether the user has clicked the track bar thumb.
protected override void OnMouseDown(MouseEventArgs e)
    if (!TrackBarRenderer.IsSupported)

    if (this.thumbRectangle.Contains(e.Location))
        thumbClicked = true;
        thumbState = TrackBarThumbState.Pressed;


.NET Framework

Supported in: 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.