VisualStyleRenderer.GetPoint(PointProperty) 方法

定义

返回当前视觉样式元素的指定点属性的值。Returns the value of the specified point property for the current visual style element.

public:
 System::Drawing::Point GetPoint(System::Windows::Forms::VisualStyles::PointProperty prop);
public System.Drawing.Point GetPoint (System.Windows.Forms.VisualStyles.PointProperty prop);
member this.GetPoint : System.Windows.Forms.VisualStyles.PointProperty -> System.Drawing.Point
Public Function GetPoint (prop As PointProperty) As Point

参数

prop
PointProperty

PointProperty 值之一,指定要为当前视觉样式元素检索的属性值。One of the PointProperty values that specifies which property value to retrieve for the current visual style element.

返回

Point,它包含 prop 参数为当前视觉样式元素指定的属性的值。A Point that contains the value of the property specified by the prop parameter for the current visual style element.

异常

prop 不是 PointProperty 值之一。prop is not one of the PointProperty values.

示例

下面的代码示例演示如何使用自定义控件中的 GetPoint 方法获取窗口 "关闭" 按钮相对于标题栏右上角的偏移量。The following code example demonstrates how to use the GetPoint method in a custom control to get the offset of the window Close button in relation to the upper-right corner of the title bar. 此代码示例是为 VisualStyleRenderer 类概述提供的更大示例的一部分。This code example is part of a larger example provided for the VisualStyleRenderer class overview.

    // Get the sizes and offsets for the window parts as specified
    // by the visual style.
private:
    void GetPartDetails()
    {
        // Do nothing further if visual styles are not enabled.
        if (!Application::RenderWithVisualStyles)
        {
            return;
        }

        Graphics^ g = this->CreateGraphics();

        // Get the size and offset of the close button.
        if (SetRenderer(windowElements["windowClose"]))
        {
            closeButtonSize =
                renderer->GetPartSize(g, ThemeSizeType::True);
            closeButtonOffset =
                renderer->GetPoint(PointProperty::Offset);
        }

        // Get the height of the window caption.
        if (SetRenderer(windowElements["windowCaption"]))
        {
            captionHeight = renderer->GetPartSize(g,
                ThemeSizeType::True).Height;
        }

        // Get the thickness of the left, bottom,
        // and right window frame.
        if (SetRenderer(windowElements["windowLeft"]))
        {
            frameThickness = renderer->GetPartSize(g,
                ThemeSizeType::True).Width;
        }

        // Get the size of the resizing gripper.
        if (SetRenderer(windowElements["statusGripper"]))
        {
            gripperSize = renderer->GetPartSize(g,
                ThemeSizeType::True);
        }

    }
// Get the sizes and offsets for the window parts as specified  
// by the visual style.
private void GetPartDetails()
{
    // Do nothing further if visual styles are not enabled.
    if (!Application.RenderWithVisualStyles)
    {
        return;
    }

    using (Graphics g = this.CreateGraphics())
    {
        // Get the size and offset of the close button.
        if (SetRenderer(windowElements["windowClose"]))
        {
            closeButtonSize =
                renderer.GetPartSize(g, ThemeSizeType.True);
            closeButtonOffset =
                renderer.GetPoint(PointProperty.Offset);
        }

        // Get the height of the window caption.
        if (SetRenderer(windowElements["windowCaption"]))
        {
            captionHeight = renderer.GetPartSize(g,
                ThemeSizeType.True).Height;
        }

        // Get the thickness of the left, bottom, 
        // and right window frame.
        if (SetRenderer(windowElements["windowLeft"]))
        {
            frameThickness = renderer.GetPartSize(g,
                ThemeSizeType.True).Width;
        }

        // Get the size of the resizing gripper.
        if (SetRenderer(windowElements["statusGripper"]))
        {
            gripperSize = renderer.GetPartSize(g,
                ThemeSizeType.True);
        }
    }
}
' Get the sizes and offsets for the window parts as specified 
' by the visual style.
Private Sub GetPartDetails()
    ' Do nothing further if visual styles are not enabled.
    If Not Application.RenderWithVisualStyles Then
        Return
    End If

    Using g As Graphics = Me.CreateGraphics()
        ' Get the size and offset of the close button.
        If SetRenderer(windowElements("windowClose")) Then
            closeButtonSize = _
                renderer.GetPartSize(g, ThemeSizeType.True)
            closeButtonOffset = _
                renderer.GetPoint(PointProperty.Offset)
        End If

        ' Get the height of the window caption.
        If SetRenderer(windowElements("windowCaption")) Then
            captionHeight = renderer.GetPartSize(g, _
                ThemeSizeType.True).Height
        End If

        ' Get the thickness of the left, bottom, and right 
        ' window frame.
        If SetRenderer(windowElements("windowLeft")) Then
            frameThickness = renderer.GetPartSize(g, _
                ThemeSizeType.True).Width
        End If

        ' Get the size of the resizing gripper.
        If SetRenderer(windowElements("statusGripper")) Then
            gripperSize = renderer.GetPartSize(g, _
                ThemeSizeType.True)
        End If
    End Using
End Sub

注解

视觉样式使用一组点值来描述样式定义的元素的某些属性。Visual styles use a set of point values to describe some properties of the elements defined by a style. 这些属性由 PointProperty 值封装。These properties are encapsulated by the PointProperty values.

适用于