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  • DevExpress ToolTipController实现工具提示控件

    1.定义一个ToolTipController变量   private ToolTipController _mToolTipController = null;

    2.封装在一个方法中

    protected void ToolTipController(GridControl gcData)
    {
    if (_mToolTipController == null)
    {
    _mToolTipController = new ToolTipController();
    }
    if (_mToolTipController == null) return;
    if (gcData != null)
    gcData.ToolTipController = _mToolTipController;
    _mToolTipController.GetActiveObjectInfo += toolTipController_GetActiveObjectInfo;//绑定一个事件
    }

    //事件方法

    private void toolTipController_GetActiveObjectInfo(object sender, DevExpress.Utils.ToolTipControllerGetActiveObjectInfoEventArgs e)
    {
    GridControl gc = e.SelectedControl as GridControl;
    if (gc == null) return;
    ToolTipControlInfo info = null;
    try
    {
    GridView view = gc.GetViewAt(e.ControlMousePosition) as GridView;
    if (view == null) return;
    GridHitInfo hi = view.CalcHitInfo(e.ControlMousePosition);
    if (hi.InRowCell)
    {
    info = new ToolTipControlInfo(new CellToolTipInfo(hi.RowHandle, hi.Column, "cell"), GetCellHintText(view, hi.RowHandle, hi.Column));
    return;
    }

    if (hi.HitTest == GridHitTest.RowIndicator)
    {
    info = new ToolTipControlInfo(GridHitTest.RowIndicator.ToString() + hi.RowHandle.ToString(), "Row Handle: " + hi.RowHandle.ToString());
    return;
    }
    }
    catch (Exception ex)
    {
    WriteExceptionLog(ex);
    }
    finally
    {
    if (info != null) e.Info = info;
    }
    }

    //提示信息

    private string GetCellHintText(GridView view, int rowHandle, GridColumn gridColumn)
    {
    string displaytext = view.GetRowCellDisplayText(rowHandle, gridColumn);
    displaytext = "提示信息";
    return displaytext;
    }

    3.调用

    ToolTipController(gcData);//gcData为列表控件

    鼠标移动到每个单元格都会出现提示:

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  • 原文地址:https://www.cnblogs.com/qq-xiao/p/6078168.html
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