如何将从GUI输入的数值传递到.m文件？

Question

我正在尝试在.m / GUI文件中编写一个代码，当我按一个按钮时，该代码可以传递从GUI中的“编辑文本”字段（称为“编辑1”）获得的某个值。 .m文件。 在GUI中说，我有这个： GUI example 我要做的是获取在“ fc”和“坍落度”字段上输入的值，并将其用于.m文件中的数学运算。在GUI中，我编写了代码以在“计算”按钮回调下面运行我的m文件，而在我的.m文件中，我编写了：

value = str2num(get(handles.edit1,'String'));

作为回报，运行UI时得到Undefined variable "handles" or class "handles.edit1"。我应该在.m文件或​​GUI编辑器中写入什么以获取值？

任何解决方案/帮助将不胜感激。谢谢！

Answer 1

以编程方式创建GUI和回调函数

不确定您将以编程方式进行此操作的程度如何，但是这里有一个设置可以获取字段的值并将其用于名为Calculate()的回调函数中。另一个清除该字段的回调函数称为Reset()。下面是GUI和命令窗口中打印的回调函数的输入：

当由.ButtonPushedFcn属性指示的按钮被按下时触发回调函数，该属性设置为需要运行的相应函数。

完整脚本：

%******************************************************%
%GUI ELEMENT SETUP/PROPERTIES%
%******************************************************%

%App figure properties%
App = uifigure();
App.Name = "GUI";
X_Position = 200;
Y_Position = 200;
Height = 300;
Width = 600;
App.Position = [X_Position Y_Position Width Height];

%Requirements sub-panel properties% 
Input_Panel = uipanel('Parent',App);
Input_Panel.Title = "Requirements";
Input_Panel.TitlePosition = 'centertop';
Input_Panel.FontWeight = 'bold';
X_Position = 50;
Y_Position = 75;
Height = 120;
Width = 250;
Input_Panel.Position = [X_Position Y_Position Width Height];

%Button label 1 properties%
Label_1 = uilabel('Parent',Input_Panel);
X_Position = 15;
Y_Position = 20;
Height = 30;
Width = 60;
Label_1.Position = [X_Position Y_Position Width Height];
Red = 0.2; Green = 0.2; Blue = 0.2;
Label_1.BackgroundColor = [Red Green Blue];
Label_1.FontColor = "white";
Label_1.HorizontalAlignment = "center";
Label_1.Text = "Slump'";

%Button label 2 properties%
Label_2 = uilabel('Parent',Input_Panel);
X_Position = 15;
Y_Position = 60;
Height = 30;
Width = 60;
Label_2.Position = [X_Position Y_Position Width Height];
Red = 0.2; Green = 0.2; Blue = 0.2;
Label_2.BackgroundColor = [Red Green Blue];
Label_2.FontColor = "white";
Label_2.HorizontalAlignment = "center";
Label_2.Text = "fc'";

%FC field properties%
FC_Field = uieditfield('Parent',Input_Panel);
X_Position = 100;
Y_Position = 60;
Height = 30;
Width = 90;
FC_Field.Position = [X_Position Y_Position Width Height];

%Slump field properties%
Slump_Field = uieditfield('Parent',Input_Panel);
X_Position = 100;
Y_Position = 20;
Height = 30;
Width = 90;
Slump_Field.Position = [X_Position Y_Position Width Height];

%Mpa label properties%
Mpa_Label = uilabel('Parent',Input_Panel);
X_Position = 200;
Y_Position = 60;
Height = 30;
Width = 80;
Mpa_Label.Position = [X_Position Y_Position Width Height];
Mpa_Label.Text = "MPa";

%Cm label properties%
Cm_Label = uilabel('Parent',Input_Panel);
X_Position = 200;
Y_Position = 20;
Height = 30;
Width = 80;
Cm_Label.Position = [X_Position Y_Position Width Height];
Cm_Label.Text = "cm";

%Calculate button properties%
Calculate_Button = uibutton('Parent',App);
X_Position = 400;
Y_Position = 150;
Height = 40;
Width = 160;
Calculate_Button.Position = [X_Position Y_Position Width Height];
Calculate_Button.Text = "Calculate";
Red = 0.7; Green = 0.7; Blue = 0.7;
Calculate_Button.BackgroundColor = [Red Green Blue];

%Reset button properties%
Reset_Button = uibutton('Parent',App);
X_Position = 420;
Y_Position = 105;
Height = 35;
Width = 120;
Reset_Button.Position = [X_Position Y_Position Width Height];
Reset_Button.Text = "Reset";
Reset_Button.FontWeight = 'bold';
Reset_Button.FontSize = 20;
Red = 0.7; Green = 0.7; Blue = 0.7;
Reset_Button.BackgroundColor = [Red Green Blue];

%Callback function configurations%
Calculate_Button.ButtonPushedFcn = @(Calculate_Button,event) Calculate(FC_Field,Slump_Field);
Reset_Button.ButtonPushedFcn = @(Calculate_Button,event) Reset(FC_Field,Slump_Field);

%******************************************************%
%CALLBACK FUNCTION DEFINITIONS%
%******************************************************%

%Calculate callback function definition%
function [] = Calculate(FC_Field,Slump_Field)

fprintf("Calculating Using:\n");
fprintf("fc': %f\n",str2num(FC_Field.Value));
fprintf("Slump: %f\n",str2num(Slump_Field.Value));

end

%Reset callback function definition%
function [] = Reset(FC_Field,Slump_Field)
fprintf("Resetting/clearing fields\n");
FC_Field.Value = "";
Slump_Field.Value = "";
    
end

使用MATLAB R2019b运行