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[GUI界面] Matlab鼠标控制的两个GUI例子(附代码)

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发表于 2009-10-11 09:49 | 显示全部楼层 |阅读模式

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相信大家都知道,MATLAB提供了一种非常方便的控制方式,利用ButtonDownFcn并配合Figure对象所提供的WindowButtonDownFcn(控制当鼠标有按键被单击时所执行的操作)、  WindowButtonMotionFcn ( 控制鼠标移动时所执行的操作)、 WindowButtonUpFcn(控制当鼠标被释放时所执行的操作),来完成鼠标控制的工作,下面给大家两个运用这些命令的小例子,以供大家参考!

1.WindowButtonDownFcn

当用户用鼠标在空白处点击时,出现欢迎对话框


  1. >> uicontrol(h,'style','text','position',[80,100,100,20],'string','请在空白处单击一下')
  2. >> h=figure ('color',[1 1 0],'position',[400 300 200 200],...
  3.         'name','Demo','menu','figure','WindowButtonDownFcn',...
  4.         'msgbox(''欢迎光临论坛'',''Window Message'',''help'')');
  5. >> uicontrol(h,'style','text','position',[80,100,100,20],'string',...
  6. '请任意单击一下')
复制代码


2.综合例子---实现画笔功能

程序代码1


  1. function mouse(action)
  2. switch action
  3. case 'start'
  4. %当光标移动时 执行'move'的操作?
  5. set(gcbf,'windowbuttonmotionfcn','mouse move');
  6. %当光标移动时 执行'stop'的操作?
  7. set(gcbf,'windowbuttonupfcn','mouse stop');
  8. case 'move'
  9. %获得当前鼠标的坐标
  10. point = get(gca,'CurrentPoint');
  11. %画出X与Y得坐标值
  12. line(point(:,1),point(:,2),'clipping','on',...
  13. 'erasemode','background','marker','o');
  14. case 'stop' %当鼠标键被释放时,不执行任何操作
  15. set(gcbf,'windowbuttonmotionfcn','');
  16. set(gcbf,'windowbuttonupfcn','');
  17. end
复制代码


  1. function varargout = matlab(varargin)
  2. % MATLAB M-file for matlab.fig
  3. % MATLAB, by itself, creates a new MATLAB or raises the existing
  4. % singleton*.
  5. %
  6. % H = MATLAB returns the handle to a new MATLAB or the handle to
  7. % the existing singleton*.
  8. %
  9. % MATLAB('CALLBACK',hObject,eventData,handles,...) calls the local
  10. % function named CALLBACK in MATLAB.M with the given input arguments.
  11. %
  12. % MATLAB('Property','Value',...) creates a new MATLAB or raises the
  13. % existing singleton*. Starting from the left, property value pairs are
  14. % applied to the GUI before painter_OpeningFunction gets called. An
  15. % unrecognized property name or invalid value makes property application
  16. % stop. All inputs are passed to matlab_OpeningFcn via varargin.
  17. %
  18. % *See GUI Options on GUIDE's Tools menu. Choose "GUI allows only one
  19. % instance to run (singleton)".
  20. %
  21. % See also: GUIDE, GUIDATA, GUIHANDLES

  22. % Copyright 2002-2003 The MathWorks, Inc.

  23. % Edit the above text to modify the response to help matlab

  24. % Last Modified by GUIDE v2.5 03-Oct-2009 17:01:36

  25. % Begin initialization code - DO NOT EDIT
  26. gui_Singleton = 1;
  27. gui_State = struct('gui_Name', mfilename, ...
  28. 'gui_Singleton', gui_Singleton, ...
  29. 'gui_OpeningFcn', @matlab_OpeningFcn, ...
  30. 'gui_OutputFcn', @matlab_OutputFcn, ...
  31. 'gui_LayoutFcn', [] , ...
  32. 'gui_Callback', []);
  33. if nargin && ischar(varargin{1})
  34. gui_State.gui_Callback = str2func(varargin{1});
  35. end

  36. if nargout
  37. [varargout{1:nargout}] = gui_mainfcn(gui_State, varargin{:});
  38. else
  39. gui_mainfcn(gui_State, varargin{:});
  40. end
  41. % End initialization code - DO NOT EDIT


  42. % --- Executes just before matlab is made visible.
  43. function matlab_OpeningFcn(hObject, eventdata, handles, varargin)
  44. % This function has no output args, see OutputFcn.
  45. % hObject handle to figure
  46. % eventdata reserved - to be defined in a future version of MATLAB
  47. % handles structure with handles and user data (see GUIDATA)
  48. % varargin command line arguments to matlab (see VARARGIN)

  49. % Choose default command line output for matlab
  50. handles.output = hObject;

  51. % Update handles structure
  52. guidata(hObject, handles);

  53. % UIWAIT makes matlab wait for user response (see UIRESUME)
  54. % uiwait(handles.figure1);


  55. % --- Outputs from this function are returned to the command line.
  56. function varargout = matlab_OutputFcn(hObject, eventdata, handles)
  57. % varargout cell array for returning output args (see VARARGOUT);
  58. % hObject handle to figure
  59. % eventdata reserved - to be defined in a future version of MATLAB
  60. % handles structure with handles and user data (see GUIDATA)

  61. % Get default command line output from handles structure
  62. varargout{1} = handles.output;


  63. % --- Executes on mouse press over axes background.
  64. function axes1_ButtonDownFcn(hObject, eventdata, handles)
  65. % hObject handle to axes1 (see GCBO)
  66. % eventdata reserved - to be defined in a future version of MATLAB
  67. % handles structure with handles and user data (see GUIDATA)
  68. mouse start
复制代码


步骤是需要利用GUIDE添加一个Static和一个 Text Axes,然后添加Callback函数即可,即可实现如下的画笔功能。
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发表于 2009-10-12 01:03 | 显示全部楼层

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[ 本帖最后由 ChaChing 于 2009-10-12 15:02 编辑 ]
发表于 2009-10-12 15:15 | 显示全部楼层
第一例顺序有误?!
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