MATLAB制作GUI—GUI中图像坐标的获取③（回调函数实现）

今天，将介绍GUI中获取图像坐标的最后一种方法—通过axes坐标轴的回调函数实现坐标的获取。

今天使用的回调函数是axes中的ButtonDownFcn函数，当鼠标在axes中点击时，MATLAB就会调用ButtonDownFcn函数。

下面是该GUI的gif图：

下面贴出实现代码：

function varargout = Getposition3(varargin)

% GETPOSITION3 MATLAB code for Getposition3.fig

% GETPOSITION3, by itself, creates a new GETPOSITION3 or raises the existing

% singleton*.

%

% H = GETPOSITION3 returns the handle to a new GETPOSITION3 or the handle to

% the existing singleton*.

%

% GETPOSITION3('CALLBACK',hObject,eventData,handles,...) calls the local

% function named CALLBACK in GETPOSITION3.M with the given input arguments.

%

% GETPOSITION3('Property','Value',...) creates a new GETPOSITION3 or raises the

% existing singleton*. Starting from the left, property value pairs are

% applied to the GUI before Getposition3_OpeningFcn gets called. An

% unrecognized property name or invalid value makes property application

% stop. All inputs are passed to Getposition3_OpeningFcn via varargin.

%

% *See GUI Options on GUIDE's Tools menu. Choose "GUI allows only one

% instance to run (singleton)".

%

% See also: GUIDE, GUIDATA, GUIHANDLES

% Edit the above text to modify the response to help Getposition3

% Last Modified