ButtonRenderer.DrawParentBackground(Graphics, Rectangle, Control) メソッド

定義

指定領域にコントロールの親の背景を描画します。Draws the background of a control's parent in the specified area.

public:
 static void DrawParentBackground(System::Drawing::Graphics ^ g, System::Drawing::Rectangle bounds, System::Windows::Forms::Control ^ childControl);
public static void DrawParentBackground (System.Drawing.Graphics g, System.Drawing.Rectangle bounds, System.Windows.Forms.Control childControl);
static member DrawParentBackground : System.Drawing.Graphics * System.Drawing.Rectangle * System.Windows.Forms.Control -> unit
Public Shared Sub DrawParentBackground (g As Graphics, bounds As Rectangle, childControl As Control)

パラメーター

g
Graphics

childControl の親の背景を描画するときに使用する GraphicsThe Graphics used to draw the background of the parent of childControl.

bounds
Rectangle

親コントロールの背景を描画する RectangleThe Rectangle in which to draw the parent control's background. この四角形は、子コントロールの境界内に存在する必要があります。This rectangle should be inside the child control's bounds.

childControl
Control

親の背景が描画されるコントロール。The control whose parent's background will be drawn.

次のコード例では、メソッドを使用して、 DrawParentBackground カスタムコントロールの領域を描画します。The following code example uses the DrawParentBackground method to paint over an area of a custom control. このコード例は、ButtonRenderer クラスのために提供されている大規模な例の一部です。This code example is part of a larger example provided for the ButtonRenderer class.

    // Draw the large or small button, depending on the current state.
protected:
    virtual void OnPaint(PaintEventArgs^ e) override
    {
        __super::OnPaint(e);

        // Draw the smaller pressed button image
        if (state == PushButtonState::Pressed)
        {
            // Set the background color to the parent if visual styles
            // are disabled, because DrawParentBackground will only paint
            // over the control background if visual styles are enabled.
            if (Application::RenderWithVisualStyles)
            {
                this->BackColor = Color::Azure;
            }
            else
            {
                this->BackColor = this->Parent->BackColor;
            }


            // If you comment out the call to DrawParentBackground,
            // the background of the control will still be visible
            // outside the pressed button, if visual styles are enabled.
            ButtonRenderer::DrawParentBackground(e->Graphics,
                ClientRectangle, this);
            ButtonRenderer::DrawButton(e->Graphics, ClickRectangle,
                this->Text, this->Font, true, state);
        }

        // Draw the bigger unpressed button image.
        else
        {
            ButtonRenderer::DrawButton(e->Graphics, ClientRectangle,
                this->Text, this->Font, false, state);
        }
    }
// Draw the large or small button, depending on the current state.
protected override void OnPaint(PaintEventArgs e)
{
    base.OnPaint(e);

    // Draw the smaller pressed button image
    if (state == PushButtonState.Pressed)
    {
        // Set the background color to the parent if visual styles  
        // are disabled, because DrawParentBackground will only paint  
        // over the control background if visual styles are enabled.
        this.BackColor = Application.RenderWithVisualStyles ?
            Color.Azure : this.Parent.BackColor;

        // If you comment out the call to DrawParentBackground, 
        // the background of the control will still be visible 
        // outside the pressed button, if visual styles are enabled.
        ButtonRenderer.DrawParentBackground(e.Graphics,
            ClientRectangle, this);
        ButtonRenderer.DrawButton(e.Graphics, ClickRectangle,
            this.Text, this.Font, true, state);
    }

    // Draw the bigger unpressed button image.
    else
    {
        ButtonRenderer.DrawButton(e.Graphics, ClientRectangle,
            this.Text, this.Font, false, state);
    }
}
' Draw the large or small button, depending on the current state.
Protected Overrides Sub OnPaint(ByVal e As PaintEventArgs)
    MyBase.OnPaint(e)

    ' Draw the smaller pressed button image.
    If state = PushButtonState.Pressed Then
        ' Set the background color to the parent if visual styles  
        ' are disabled, because DrawParentBackground will only paint  
        ' over the control background if visual styles are enabled.
        If Application.RenderWithVisualStyles Then
            Me.BackColor = Color.Azure
        Else
            Me.BackColor = Me.Parent.BackColor
        End If

        ' If you comment out the call to DrawParentBackground,   
        ' the background of the control will still be visible 
        ' outside the pressed button, if visual styles are enabled.
        ButtonRenderer.DrawParentBackground(e.Graphics, _
            Me.ClientRectangle, Me)
        ButtonRenderer.DrawButton(e.Graphics, ClickRectangle, _
            Me.Text, Me.Font, True, state)

    ' Draw the bigger unpressed button image.
    Else
        ButtonRenderer.DrawButton(e.Graphics, Me.ClientRectangle, _
            Me.Text, Me.Font, False, state)
    End If
End Sub

適用対象