ButtonRenderer.DrawParentBackground(Graphics, Rectangle, Control) Yöntem
Tanım
Önemli
Bazı bilgiler ürünün ön sürümüyle ilgilidir ve sürüm öncesinde önemli değişiklikler yapılmış olabilir. Burada verilen bilgilerle ilgili olarak Microsoft açık veya zımni hiçbir garanti vermez.
Bir denetimin üst öğesinin arka planını belirtilen alana çizer.
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)
Parametreler
- bounds
- Rectangle
Rectangle Üst denetimin arka planının çizildiği yer. Bu dikdörtgen alt denetimin sınırları içinde olmalıdır.
- childControl
- Control
Üst öğesinin arka planı çizilecek olan denetim.
Örnekler
Aşağıdaki kod örneği, özel denetimin DrawParentBackground bir alanını boyamak için yöntemini kullanır. Bu kod örneği, sınıfı için ButtonRenderer sağlanan daha büyük bir örneğin parçasıdır.
// 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