TextBoxRenderer.IsSupported Property
Definition
Important
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Gets a value indicating whether the TextBoxRenderer class can be used to draw a text box with visual styles.
public:
static property bool IsSupported { bool get(); };
public static bool IsSupported { get; }
static member IsSupported : bool
Public Shared ReadOnly Property IsSupported As Boolean
Property Value
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
.
Examples
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:
virtual void OnPaint(PaintEventArgs^ e) override
{
__super::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";
}
}
// 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";
}
}
' Use DrawText with the current TextFormatFlags.
Protected Overrides Sub OnPaint(ByVal e As PaintEventArgs)
MyBase.OnPaint(e)
If TextBoxRenderer.IsSupported Then
TextBoxRenderer.DrawTextBox(e.Graphics, textBorder, Me.Text, _
Me.Font, textRectangle, textFlags, TextBoxState.Normal)
Me.Parent.Text = "CustomTextBox Enabled"
Else
Me.Parent.Text = "CustomTextBox Disabled"
End If
End Sub
Remarks
If this property is false
, the DrawTextBox method will throw an InvalidOperationException.
Applies to
See also
.NET
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