TextBoxRenderer.IsSupported Property

 

Gets a value indicating whether the TextBoxRenderer class can be used to draw a text box 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 DrawTextBox method will throw an InvalidOperationException.

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

// Use DrawText with the current TextFormatFlags.
protected override void OnPaint(PaintEventArgs e)
{
    base.OnPaint(e);

    if (TextBoxRenderer.IsSupported)
    {
        TextBoxRenderer.DrawTextBox(e.Graphics, textBorder, this.Text,
            this.Font, textRectangle, textFlags, TextBoxState.Normal);

        this.Parent.Text = "CustomTextBox Enabled";
    }
    else
    {
        this.Parent.Text = "CustomTextBox Disabled";
    }
}

.NET Framework
Available since 2.0
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