winform中combobox行间距调整

自定义ComboBox样式

最新推荐文章于 2024-05-13 11:34:09 发布

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本文介绍如何通过设置ComboBox的DrawMode属性为OwnerDrawVariable，并添加DrawItem与MeasureItem事件处理程序来实现自定义ComboBox的显示样式。

将combobox的属性DrowMode设置成OwnerDrawVariable，添加两个事件就OK了！

  Private Sub m_cboOperScale_DrawItem(ByVal sender As System.Object, ByVal e As System.Windows.Forms.DrawItemEventArgs) Handles m_cboOperScale.DrawItem
        If e.Index < 0 Then
            Exit Sub
        End If
        e.DrawBackground()
        e.DrawFocusRectangle()
        e.Graphics.DrawString(m_cmbContents.Items(e.Index).ToString, e.Font, New SolidBrush(e.ForeColor), e.Bounds)
    End Sub

    Private Sub m_cboOperScale_MeasureItem(ByVal sender As System.Object, ByVal e As System.Windows.Forms.MeasureItemEventArgs) Handles m_cboOperScale.MeasureItem
        e.ItemHeight = 20
    End Sub