MATLAB Answers

How to increment a value with push button in a GUIDE-based GUI?

조회 수: 5(최근 30일)
Charlotte A Navntoft
Charlotte A Navntoft 29 Nov 2019
Hi,
I have made a GUIDE-based GUI with two push botton and an edit text window.
The edit txt window shows a Current Level.
I would like the Current level (handles.Initial_CurrentLevel) to increase with a fixed step size (handles.Initial_Step_Size) when I press the UP botton and to decrease with a fixed step size when I press the DOWN botton.
Can youone help me on this?
Thanks,
Charlotte
function varargout = gui_ThresholdEstimation(varargin)
% GUI_THRESHOLDESTIMATION MATLAB code for gui_ThresholdEstimation.fig
% GUI_THRESHOLDESTIMATION, by itself, creates a new GUI_THRESHOLDESTIMATION or raises the existing
% singleton*.
%
% H = GUI_THRESHOLDESTIMATION returns the handle to a new GUI_THRESHOLDESTIMATION or the handle to
% the existing singleton*.
%
% GUI_THRESHOLDESTIMATION('CALLBACK',hObject,eventData,handles,...) calls the local
% function named CALLBACK in GUI_THRESHOLDESTIMATION.M with the given input arguments.
%
% GUI_THRESHOLDESTIMATION('Property','Value',...) creates a new GUI_THRESHOLDESTIMATION or raises the
% existing singleton*. Starting from the left, property value pairs are
% applied to the GUI before gui_ThresholdEstimation_OpeningFcn gets called. An
% unrecognized property name or invalid value makes property application
% stop. All inputs are passed to gui_ThresholdEstimation_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 gui_ThresholdEstimation
% Last Modified by GUIDE v2.5 29-Nov-2019 13:41:41
% Begin initialization code - DO NOT EDIT
gui_Singleton = 1;
gui_State = struct('gui_Name', mfilename, ...
'gui_Singleton', gui_Singleton, ...
'gui_OpeningFcn', @gui_ThresholdEstimation_OpeningFcn, ...
'gui_OutputFcn', @gui_ThresholdEstimation_OutputFcn, ...
'gui_LayoutFcn', [] , ...
'gui_Callback', []);
if nargin && ischar(varargin{1})
gui_State.gui_Callback = str2func(varargin{1});
end
if nargout
[varargout{1:nargout}] = gui_mainfcn(gui_State, varargin{:});
else
gui_mainfcn(gui_State, varargin{:});
end
% End initialization code - DO NOT EDIT
% --- Executes just before gui_ThresholdEstimation is made visible.
function gui_ThresholdEstimation_OpeningFcn(hObject, eventdata, handles, varargin)
% This function has no output args, see OutputFcn.
% hObject handle to figure
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
% varargin command line arguments to gui_ThresholdEstimation (see VARARGIN)
% Choose default command line output for gui_ThresholdEstimation
handles.output = hObject;
% Update handles structure
guidata(hObject, handles);
% UIWAIT makes gui_ThresholdEstimation wait for user response (see UIRESUME)
% uiwait(handles.figure1);
% --- Outputs from this function are returned to the command line.
function varargout = gui_ThresholdEstimation_OutputFcn(hObject, eventdata, handles)
% varargout cell array for returning output args (see VARARGOUT);
% hObject handle to figure
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
% Get default command line output from handles structure
varargout{1} = handles.output;
% --- Executes on button press in UP.
function UP_Callback(hObject, eventdata, handles)
% hObject handle to UP (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
handles.Initial_CurrentLevel = 200; % staring current level
handles.Initial_Step_Size = 5; % the step staring current level
%%% SOMETHING IS MISSING HERE
textLabel = sprintf('Current Level = %f', handles.Initial_CurrentLevel);
set(handles.edit1, 'String', textLabel)
% --- Executes on button press in DOWN.
function DOWN_Callback(hObject, eventdata, handles)
% hObject handle to DOWN (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
handles.Initial_CurrentLevel = 200; % staring current level
handles.Initial_Step_Size = 5; % the step staring current level
%%% SOMETHING IS MISSING HERE
textLabel = sprintf('Current Level = %f', handles.Initial_CurrentLevel);
set(handles.edit1, 'String', textLabel);
function edit1_Callback(hObject, eventdata, handles)
% hObject handle to edit1 (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
% Hints: get(hObject,'String') returns contents of edit1 as text
% str2double(get(hObject,'String')) returns contents of edit1 as a double
% --- Executes during object creation, after setting all properties.
function edit1_CreateFcn(hObject, eventdata, handles)
% hObject handle to edit1 (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles empty - handles not created until after all CreateFcns called
% Hint: edit controls usually have a white background on Windows.
% See ISPC and COMPUTER.
if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))
set(hObject,'BackgroundColor','white');
end

  댓글 수: 0

로그인 to comment.

답변(1개)

Navya Seelam
Navya Seelam 2 Dec 2019
Hi,
You can initialize the Current_Level in the function gui_ThresholdEstimation_OpeningFcn as shown below
function gui_ThresholdEstimation_OpeningFcn(hObject, eventdata, handles, varargin)
% This function has no output args, see OutputFcn.
% hObject handle to figure
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
% varargin command line arguments to gui_ThresholdEstimation (see VARARGIN)
% Choose default command line output for gui_ThresholdEstimation
handles.output = hObject;
handles.Initial_CurrentLevel = 100;
handles.Initial_Step_Size = 5;
% Update handles structure
guidata(hObject, handles);
Now, you can update UP_Callback function as follows
function UP_Callback(hObject, eventdata, handles)
% hObject handle to UP (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
handles.Initial_CurrentLevel=handles.Initial_CurrentLevel+handles.Initial_Step_Size;
guidata(hObject, handles);
textLabel = sprintf('Current Level = %f', handles.Initial_CurrentLevel);
set(handles.edit1, 'String', textLabel);
Same can be applied to DOWN_Callback function.

  댓글 수: 1

로그인 to comment.

이 질문에 답변하려면 로그인을(를) 수행하십시오.


Translated by