将矩形传递给事件函数 [英] pass rectangle into a events function

问题描述

我在一个函数中创建了一个矩形

现在我想把这个矩形传递给一个事件函数

我该怎么做？



我创建的示例代码：

I created a rectangle within a function
Now I want to pass this rectangle into a function of events
How can I do this?

Sample code I created:

        private void button2_Checked(object sender, RoutedEventArgs e)
        {
       
        //create new rectengle

           Rectangle rect = new Rectangle();
           rect.Visibility = Visibility.Visible;
           rect.Width = slider1.Value;
           rect.Height = slider2.Value;
           SolidColorBrush myBrush = new SolidColorBrush(Colors.Green);
           rect.Stroke = Brushes.Red;
           rect.StrokeThickness = 1;
           rect.Fill = myBrush;

            // Creat event to the new rect

           rect.MouseLeftButtonDown += rect_MouseLeftButtonDown;
           rect.MouseLeftButtonUp += rect_MouseLeftButtonUp;
           rect.MouseMove += rect_MouseMove;
           

          

            myCanvas.Children.Insert(0, rect);

        }


private bool _isRectDragInProg;

// one of the event function
//Function is called but the value rectangle unidentified
     private void rect_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
        {

           
            _isRectDragInProg = true;
          
            //Here I want to pass the rectangle

                rect.CaptureMouse();
           
        }

推荐答案

嗨会员，



所以你的问题是如何在eventhandler方法中获得对clicked（draged ...）矩形的引用？这很容易 - 你会通过sender参数得到它：

Hi Member,

So your Problem is just how to obtain a reference to the clicked (draged...) rectangle in the eventhandler method? This is easy - you will get it through the sender parameter like this:

Rectangle rect = sender as Rectangle;

或者你的意思是什么？

Or did you mean something else?

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