DrawItemEventArgs.State 属性

定义

命名空间:

System.Windows.Forms

程序集:

System.Windows.Forms.dll

获取所绘制项的状态。

public:
 property System::Windows::Forms::DrawItemState State { System::Windows::Forms::DrawItemState get(); };

public System.Windows.Forms.DrawItemState State { get; }

member this.State : System.Windows.Forms.DrawItemState

Public ReadOnly Property State As DrawItemState

属性值

DrawItemState

表示所绘制项的状态的 DrawItemState。

示例

下面的代码示例演示了此成员的用法。 在此示例中，事件处理程序报告事件的发生情况 ListBox.DrawItem 。 此报表可帮助你了解事件发生的时间，并可以帮助你进行调试。

若要运行示例代码，请将其粘贴到包含名为 ListBox1的 类型的ListBox实例的项目中。 然后，确保事件处理程序与 ListBox.DrawItem 事件相关联。

private void ListBox1_DrawItem(Object sender, DrawItemEventArgs e) {

System.Text.StringBuilder messageBoxCS = new System.Text.StringBuilder();
messageBoxCS.AppendFormat("{0} = {1}", "BackColor", e.BackColor );
messageBoxCS.AppendLine();
messageBoxCS.AppendFormat("{0} = {1}", "Bounds", e.Bounds );
messageBoxCS.AppendLine();
messageBoxCS.AppendFormat("{0} = {1}", "Font", e.Font );
messageBoxCS.AppendLine();
messageBoxCS.AppendFormat("{0} = {1}", "ForeColor", e.ForeColor );
messageBoxCS.AppendLine();
messageBoxCS.AppendFormat("{0} = {1}", "Graphics", e.Graphics );
messageBoxCS.AppendLine();
messageBoxCS.AppendFormat("{0} = {1}", "Index", e.Index );
messageBoxCS.AppendLine();
messageBoxCS.AppendFormat("{0} = {1}", "State", e.State );
messageBoxCS.AppendLine();
MessageBox.Show(messageBoxCS.ToString(), "DrawItem Event" );
}

Private Sub ListBox1_DrawItem(sender as Object, e as DrawItemEventArgs) _ 
     Handles ListBox1.DrawItem

    Dim messageBoxVB as New System.Text.StringBuilder()
    messageBoxVB.AppendFormat("{0} = {1}", "BackColor", e.BackColor)
    messageBoxVB.AppendLine()
    messageBoxVB.AppendFormat("{0} = {1}", "Bounds", e.Bounds)
    messageBoxVB.AppendLine()
    messageBoxVB.AppendFormat("{0} = {1}", "Font", e.Font)
    messageBoxVB.AppendLine()
    messageBoxVB.AppendFormat("{0} = {1}", "ForeColor", e.ForeColor)
    messageBoxVB.AppendLine()
    messageBoxVB.AppendFormat("{0} = {1}", "Graphics", e.Graphics)
    messageBoxVB.AppendLine()
    messageBoxVB.AppendFormat("{0} = {1}", "Index", e.Index)
    messageBoxVB.AppendLine()
    messageBoxVB.AppendFormat("{0} = {1}", "State", e.State)
    messageBoxVB.AppendLine()
    MessageBox.Show(messageBoxVB.ToString(),"DrawItem Event")

End Sub

注解

此属性值可以是枚举成员的组合 DrawItemState 。 可以使用按位运算符组合成员。

另请参阅

• DrawItemState