C# - Visio 中是否有 OnShapeMoved 或 OnShapeDeleted 事件？

Question

我认为标题或问题已经足够清楚了。我看到了一些关于EventSink的东西，但我发现它很难使用。有什么提示吗？

Answer 1

Visio 主互操作程序集 将这些事件公开为 C# 事件，因此您可以简单地用委托挂钩事件。

请参阅这个简单的示例：

namespace VisioEventsExample
{
    using System;
    using Microsoft.Office.Interop.Visio;

    class Program
    {
        public static void Main(string[] args)
        {
            Application app = new Application();
            Document doc = app.Documents.Add("");
            Page page = doc.Pages[1];

            // Setup event handles for the events you are intrested in.

            // Shape deleted is easy.
            page.BeforeShapeDelete += 
                new EPage_BeforeShapeDeleteEventHandler(onBeforeShapeDelete);

            // To find out if a shape has moved hook the cell changed event 
            // and then check to see if PinX or PinY changed.
            page.CellChanged += 
                new EPage_CellChangedEventHandler(onCellChanged);

            // In C# 4 for you can simply do this:
            //            
            //   page.BeforeShapeDelete += onBeforeShapeDelete;
            //   page.CellChanged += onCellChanged;

            // Now wait for the events.
            Console.WriteLine("Wait for events. Press any key to stop.");
            Console.ReadKey();
        }

        // This will be called when a shape sheet cell for a
        // shape on the page is changed. To know if the shape
        // was moved see of the pin was changed. This will 
        // fire twice if the shape is moved horizontally and 
        // vertically.
        private static void onCellChanged(Cell cell)
        {
            if (cell.Name == "PinX" || cell.Name == "PinY")
            {
                Console.WriteLine(
                    string.Format("Shape {0} moved", cell.Shape.Name));
            }            
        }

        // This will be called when a shape is deleted from the page.
        private static void onBeforeShapeDelete(Shape shape)
        {
            Console.WriteLine(string.Format("Shape deleted {0}", shape.Name));
        }
    }
}

如果您尚未下载 Visio SDK 您应该这样做。 SDK 的最新版本包含许多有用的示例，其中包括一个名为“Shape Add\Delete Event”的示例。如果您有 2010 版本，可以通过转到“开始”菜单\程序\Microsoft Office 2010 开发人员资源\Microsoft Visio 2010 SDK\Microsoft Visio 代码示例库来浏览示例。

Answer 2

我相信您必须实现 EvenSink 才能访问“ShapesDeleted”，即

 (short)Microsoft.Office.Interop.Visio.VisEventCodes.visEvtCodeShapeDelete

如果您正在寻找事件“BeforeShapeDelete”而不是“after”ShapeDelete，上面的代码将为您提供帮助；）