共用方式為


DrawItemEventArgs.BackColor 屬性

定義

取得所繪製項目的背景色彩。

public:
 property System::Drawing::Color BackColor { System::Drawing::Color get(); };
public System.Drawing.Color BackColor { get; }
member this.BackColor : System.Drawing.Color
Public ReadOnly Property BackColor As Color

屬性值

繪製項目的背景 Color

範例

下列程式碼範例示範如何使用這個成員。 在此範例中,事件處理常式會報告事件的發生次數 ListBox.DrawItem 。 此報告可協助您瞭解事件發生的時間,並可協助您進行偵錯。

若要執行範例程式碼,請將它貼到包含名為 ListBox1 之型 ListBox 別實例的專案。 然後,請確定事件處理常式與 ListBox.DrawItem 事件相關聯。

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

備註

如果專案的狀態為 DrawItemState.Selected ,則會 BackColor 設定為 SystemColors.HighlightText 。 如果專案的狀態不是 Selected ,則 BackColor 屬性會設定為 SystemColors.Window

適用於

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