通过

DrawListViewSubItemEventArgs.DrawText 方法

  • 参考

定义

命名空间:
System.Windows.Forms
程序集:
System.Windows.Forms.dll

使用 ListViewItem.ListViewSubItem 的当前前景色和默认格式设置绘制它的文本。

重载

DrawText()

使用 ListViewItem.ListViewSubItem 的当前前景色绘制它的文本。
DrawText(TextFormatFlags)

使用 ListViewItem.ListViewSubItem 的当前前景色以及由指定的 TextFormatFlags 值设置的格式绘制它的文本。

DrawText()

Source:
DrawListViewSubItemEventArgs.cs
Source:
DrawListViewSubItemEventArgs.cs
Source:
DrawListViewSubItemEventArgs.cs

使用 ListViewItem.ListViewSubItem 的当前前景色绘制它的文本。

public:
 void DrawText();
public void DrawText ();
member this.DrawText : unit -> unit
Public Sub DrawText ()

注解

使用此方法使用 和 ListViewItem.ListViewSubItem.Font 属性的ListViewItem.ListViewSubItem.ForeColor当前值绘制子项文本。 文本在 属性指定的 Bounds 区域内绘制。

注意

UseItemStyleForSubItems父ListViewItem项的 属性必须设置为 ，false以防止ListViewItem.ForeColor父项的 和 ListViewItem.Font 值重写子项值。

另请参阅

适用于

DrawText(TextFormatFlags)

Source:
DrawListViewSubItemEventArgs.cs
Source:
DrawListViewSubItemEventArgs.cs
Source:
DrawListViewSubItemEventArgs.cs

使用 ListViewItem.ListViewSubItem 的当前前景色以及由指定的 TextFormatFlags 值设置的格式绘制它的文本。

public:
 void DrawText(System::Windows::Forms::TextFormatFlags flags);
public void DrawText (System.Windows.Forms.TextFormatFlags flags);
member this.DrawText : System.Windows.Forms.TextFormatFlags -> unit
Public Sub DrawText (flags As TextFormatFlags)

参数

flags
TextFormatFlags

TextFormatFlags 值的按位组合。

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 DrawText 方法。 在此示例中，事件的处理程序 ListView.DrawSubItem 绘制子项文本值，以及具有负值的子项的文本和背景。

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

// Draws subitem text and applies content-based formatting.
private void listView1_DrawSubItem(object sender,
    DrawListViewSubItemEventArgs e)
{
    TextFormatFlags flags = TextFormatFlags.Left;

    using (StringFormat sf = new StringFormat())
    {
        // Store the column text alignment, letting it default
        // to Left if it has not been set to Center or Right.
        switch (e.Header.TextAlign)
        {
            case HorizontalAlignment.Center:
                sf.Alignment = StringAlignment.Center;
                flags = TextFormatFlags.HorizontalCenter;
                break;
            case HorizontalAlignment.Right:
                sf.Alignment = StringAlignment.Far;
                flags = TextFormatFlags.Right;
                break;
        }

        // Draw the text and background for a subitem with a 
        // negative value. 
        double subItemValue;
        if (e.ColumnIndex > 0 && Double.TryParse(
            e.SubItem.Text, NumberStyles.Currency,
            NumberFormatInfo.CurrentInfo, out subItemValue) &&
            subItemValue < 0)
        {
            // Unless the item is selected, draw the standard 
            // background to make it stand out from the gradient.
            if ((e.ItemState & ListViewItemStates.Selected) == 0)
            {
                e.DrawBackground();
            }

            // Draw the subitem text in red to highlight it. 
            e.Graphics.DrawString(e.SubItem.Text,
                listView1.Font, Brushes.Red, e.Bounds, sf);

            return;
        }

        // Draw normal text for a subitem with a nonnegative 
        // or nonnumerical value.
        e.DrawText(flags);
    }
}

' Draws subitem text and applies content-based formatting.
Private Sub listView1_DrawSubItem(ByVal sender As Object, _
    ByVal e As DrawListViewSubItemEventArgs) _
    Handles listView1.DrawSubItem

    Dim flags As TextFormatFlags = TextFormatFlags.Left

    Dim sf As New StringFormat()
    Try

        ' Store the column text alignment, letting it default
        ' to Left if it has not been set to Center or Right.
        Select Case e.Header.TextAlign
            Case HorizontalAlignment.Center
                sf.Alignment = StringAlignment.Center
                flags = TextFormatFlags.HorizontalCenter
            Case HorizontalAlignment.Right
                sf.Alignment = StringAlignment.Far
                flags = TextFormatFlags.Right
        End Select

        ' Draw the text and background for a subitem with a 
        ' negative value. 
        Dim subItemValue As Double
        If e.ColumnIndex > 0 AndAlso _
            Double.TryParse(e.SubItem.Text, NumberStyles.Currency, _
            NumberFormatInfo.CurrentInfo, subItemValue) AndAlso _
            subItemValue < 0 Then

            ' Unless the item is selected, draw the standard 
            ' background to make it stand out from the gradient.
            If (e.ItemState And ListViewItemStates.Selected) = 0 Then
                e.DrawBackground()
            End If

            ' Draw the subitem text in red to highlight it. 
            e.Graphics.DrawString(e.SubItem.Text, _
                Me.listView1.Font, Brushes.Red, e.Bounds, sf)

            Return

        End If

        ' Draw normal text for a subitem with a nonnegative 
        ' or nonnumerical value.
        e.DrawText(flags)

    Finally
        sf.Dispose()
    End Try

End Sub

注解

使用此方法使用 和 ListViewItem.ListViewSubItem.Font 属性的ListViewItem.ListViewSubItem.ForeColor当前值绘制子项文本。 文本在 属性指定的 Bounds 区域内绘制。 参数 TextFormatFlags 中指定的 flags 值允许你为节点标签提供格式属性，例如文本对齐方式。

注意

UseItemStyleForSubItems父ListViewItem项的 属性必须设置为 ，false以防止ListViewItem.ForeColor父项的 和 ListViewItem.Font 值重写子项值。

另请参阅

适用于