如何隐藏DevExpress XtraReports打印预览窗口的工具栏按钮？

所有的工具栏按钮（包括与其对应的菜单项）均可通过改变对象打印系统的命令（参考DevExpress.XtraPrinting.PrintingSystemCommand的枚举项列表）将其显示/隐藏。要实现该操作可通过PrintingSystem.SetCommandVisibility 方法完成。参考代码如下：

using System;

using System.Windows.Forms;

using DevExpress.XtraPrinting;

using DevExpress.XtraReports.UI;

// ...

private void button1_Click(object sender, EventArgs e) {

    //创建报表示例，指定到一个打印工具

    ReportPrintTool pt = new ReportPrintTool(new XtraReport1());

    // 获取打印工具的PrintingSystem

    PrintingSystemBase ps = pt.PrintingSystem;

    // 隐藏Watermark 工具按钮和菜单项.

    if (ps.GetCommandVisibility(PrintingSystemCommand.Watermark) != CommandVisibility.None) {

        ps.SetCommandVisibility(PrintingSystemCommand.Watermark,

            CommandVisibility.None);

    }

    // 显示Document Map工具按钮和菜单项

    ps.SetCommandVisibility(PrintingSystemCommand.DocumentMap, CommandVisibility.All);

    //显示报表预览.

    pt.ShowPreview();

}