DrawListViewItemEventArgs.Graphics 属性

定义

命名空间:

System.Windows.Forms

程序集:

System.Windows.Forms.dll

获取用于绘制 Graphics 的 ListViewItem。

public:
 property System::Drawing::Graphics ^ Graphics { System::Drawing::Graphics ^ get(); };

public System.Drawing.Graphics Graphics { get; }

member this.Graphics : System.Drawing.Graphics

Public ReadOnly Property Graphics As Graphics

属性值

Graphics

用于绘制 Graphics 的 ListViewItem。

示例

下面的代码示例演示如何在为控件提供自定义绘图ListView的应用程序中使用 Graphics 属性。 在此示例中，事件的处理程序 ListView.DrawItem 绘制整个项的背景。 在除详细信息视图之外的所有视图中，此处理程序还会绘制前景文本。 在详细信息视图中，将在 事件中 ListView.DrawSubItem 绘制前景文本。

有关完整示例，请参阅 DrawListViewItemEventArgs 概述参考主题。

// Draws the backgrounds for entire ListView items.
private void listView1_DrawItem(object sender,
    DrawListViewItemEventArgs e)
{
    if ((e.State & ListViewItemStates.Selected) != 0)
    {
        // Draw the background and focus rectangle for a selected item.
        e.Graphics.FillRectangle(Brushes.Maroon, e.Bounds);
        e.DrawFocusRectangle();
    }
    else
    {
        // Draw the background for an unselected item.
        using (LinearGradientBrush brush =
            new LinearGradientBrush(e.Bounds, Color.Orange,
            Color.Maroon, LinearGradientMode.Horizontal))
        {
            e.Graphics.FillRectangle(brush, e.Bounds);
        }
    }

    // Draw the item text for views other than the Details view.
    if (listView1.View != View.Details)
    {
        e.DrawText();
    }
}

' Draws the backgrounds for entire ListView items.
Private Sub listView1_DrawItem(ByVal sender As Object, _
    ByVal e As DrawListViewItemEventArgs) _
    Handles listView1.DrawItem

    If Not (e.State And ListViewItemStates.Selected) = 0 Then

        ' Draw the background for a selected item.
        e.Graphics.FillRectangle(Brushes.Maroon, e.Bounds)
        e.DrawFocusRectangle()

    Else

        ' Draw the background for an unselected item.
        Dim brush As New LinearGradientBrush(e.Bounds, Color.Orange, _
            Color.Maroon, LinearGradientMode.Horizontal)
        Try
            e.Graphics.FillRectangle(brush, e.Bounds)
        Finally
            brush.Dispose()
        End Try

    End If

    ' Draw the item text for views other than the Details view.
    If Not Me.listView1.View = View.Details Then
        e.DrawText()
    End If

End Sub

注解

类 Graphics 提供可用于在显示设备上绘图的属性和方法。

另请参阅

• Graphics
• ListView
• DrawItem
• ListViewItem