MFC设置坐标画曲线取点

左手的ㄟ右手 2022-08-10 16:47 169阅读 0赞

首先声明本程序不是本人全部原创，改编于一个老外的程序，下面是人家编写此程序的原因，表达对大牛的崇拜之情。原程序是一个动态曲线显示。

Author:
    	Mehdi Mousavi
    
    Email:
    	mehdi_mousavi@hotmail.com
    	webmaster@modemmania.com
    
    Date of release:
    	14th of April 2001
    
    Description:
    	The initial idea of doing this code has been put into my mind when my love asked me
    	to go to a clinic in order to check out my heart. You know, doctors have got some
    	sort of plotters that plots the information obtained from the heart on a piece of
    	paper as a histogram. The idea has been dropped into my mind there!
    
    Dedicated to:
    	My love, Cindy
    
    Copyright & disclaimer:
    	Permission is granted to distribute *unmodified* version of this source code.
    	You are entitled to use CHistogramCtrl for both commercial and/or educational
    	purposes as far as you keep these comments intact. Please feel free to post
    	any additions to the author.
    */

源程序效果：

![Center][]

1、下面说明自己开发的需求：

很多同事在工程调试中，包括自己干工程的时候，经常遇到已知现场电压、电流、或者压力、流量曲线(本人电气男)，我们需要去拟合出来和现场差不多的曲线，要拟合肯定得需要原始的点数据，所以特别想要一款工具，能够根据自己随手画的曲线和定义好的坐标，方便的取出曲线上任何一个点。

2、工具应该具备的功能：

能够方便的划出曲线，能够设置横纵坐标，能够方便取点。

3、先给出实现后的效果图：顶部实时动态的显示曲线上任意点的坐标，右击能够清空曲线，设置横纵坐标的范围。这是一个发电机并网大致的升压曲线。

![Center 1][]

4、源代码

本站下载地址：[http://download.csdn.net/detail/dubuzherui/7717949][http_download.csdn.net_detail_dubuzherui_7717949]

可执行文件下载地址：[http://download.csdn.net/detail/dubuzherui/7717989][http_download.csdn.net_detail_dubuzherui_7717989]

具体实现步骤：

首先，肯定是绘制坐标：

然后，利用画线记录在客户区；

最后，捕捉鼠标的位置。

具体代码，下个博文再详细写，赶紧下班回去了。

[Center]: /images/20220810/55c3ecb8393048ddbd1ae4ace0a7aa8f.png
[Center 1]: /images/20220810/2624192ee23349d997c0680b0c8b56eb.png
[http_download.csdn.net_detail_dubuzherui_7717949]: http://download.csdn.net/detail/dubuzherui/7717949
[http_download.csdn.net_detail_dubuzherui_7717989]: http://download.csdn.net/detail/dubuzherui/7717989