TabRenderer.IsSupported 屬性

定義

命名空間:

System.Windows.Forms

組件:

System.Windows.Forms.dll

取得值，指出 TabRenderer 類別是否可用來繪製具有視覺化樣式的索引標籤控制項。

public:
 static property bool IsSupported { bool get(); };

public static bool IsSupported { get; }

member this.IsSupported : bool

Public Shared ReadOnly Property IsSupported As Boolean

屬性值

Boolean

如果使用者在作業系統中已經啟用視覺化樣式，而且應用程式視窗的工作區中已經套用視覺化樣式，則為 true，否則為 false。

範例

下列程式碼範例會 IsSupported 使用 屬性來判斷是否要使用 DrawTabPage 和 DrawTabItem 方法。 此程式碼範例是針對 類別提供的較大範例的 TabRenderer 一部分。

    // Draw the tab page and the tab items.
protected:
    virtual void OnPaint(PaintEventArgs^ e) override
    {
        __super::OnPaint(e);

        if (!TabRenderer::IsSupported)
        {
            this->Parent->Text = "CustomTabControl Disabled";
            return;
        }

        TabRenderer::DrawTabPage(e->Graphics, tabPageRectangle);
        TabRenderer::DrawTabItem(e->Graphics, tabItemRectangle1,
            tab1Text, this->Font, tab1Focused, tab1State);
        TabRenderer::DrawTabItem(e->Graphics, tabItemRectangle2,
            tab2Text, this->Font, tab2Focused, tab2State);

        this->Parent->Text = "CustomTabControl Enabled";
    }

// Draw the tab page and the tab items.
protected override void OnPaint(PaintEventArgs e)
{
    base.OnPaint(e);

    if (!TabRenderer.IsSupported)
    {
        this.Parent.Text = "CustomTabControl Disabled";
        return;
    }

    TabRenderer.DrawTabPage(e.Graphics, tabPageRectangle);
    TabRenderer.DrawTabItem(e.Graphics, tabItemRectangle1,
        tab1Text, this.Font, tab1Focused, tab1State);
    TabRenderer.DrawTabItem(e.Graphics, tabItemRectangle2,
        tab2Text, this.Font, tab2Focused, tab2State);

    this.Parent.Text = "CustomTabControl Enabled";
}

' Draw the tab page and the tab items.
Protected Overrides Sub OnPaint(ByVal e As PaintEventArgs)
    MyBase.OnPaint(e)

    If Not TabRenderer.IsSupported Then
        Me.Parent.Text = "CustomTabControl Disabled"
        Return
    End If

    TabRenderer.DrawTabPage(e.Graphics, tabPageRectangle)
    TabRenderer.DrawTabItem(e.Graphics, tabItemRectangle1, _
        tab1Text, Me.Font, tab1Focused, tab1State)
    TabRenderer.DrawTabItem(e.Graphics, tabItemRectangle2, _
        tab2Text, Me.Font, tab2Focused, tab2State)
    Me.Parent.Text = "CustomTabControl Enabled"
End Sub

備註

如果此屬性為 false ，則 和 DrawTabItem 方法會擲回 InvalidOperationException DrawTabPage 。

另請參閱

• VisualStyleState