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About arrows

XD++ provides enough arrows resource and control classes for performing common user interface activities. They are applicable to most applications developed with XD++. To add any of these arrows to your applications, you only need to add arrows from the property dialog. The XD++ has  already  realized all for you. What's more , you can also add your self-built arrow sources from XD++ library easily.

All arrows below are built to provide our customers to get great  efficiency . You can use according to your need . To see the class used to build the arrow, you can refer to the class library guide within our products. Also you can click the links (windows)  to the left to see which arrows we have draw for you .  

If you do not want to use one of the endpoints provided with XD++ Library, you can create your own. Simply derive a new object from CFOBaseEndObject and override OnDraw() and BuildLineEnd(). Refer to the existing endpoints, CFOCrossArrowObject and CFOEmptyArrowObject.

Create your own arrow class

To create a customized endpoint, you need to calculate how your geometry appears in relation to the line for both the OnDraw() and BuildLineEnd() methods. In CFOCrossArrowObject , this is calculated in the BuildLineEnd() method. t uses the arrow size values to determine how to display the polygon. The values for the vertices of the polygon are used in both the region calculations and in the drawing of the endpoint.

Also you can use XD++ Library add-in  to Create your arrow class, below is how:

1.Run the XD++ Library add-in.

Now let's create a  document class and a view class.

2.In the base class box, select CFOBaseEndObject

3.Create a new arrow class, eg:CMyArrowClass

4.Override methods OnDraw() and BuildLineEnd()

Visual C++ MFC Example

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