如何将从 GUI 输入的数值传递给 .m 文件？

Question

我正在尝试在我的 .m/ GUI 文件中编写一个代码，当我按下按钮时，它可以将从 GUI 中的“编辑文本”字段（称为“编辑 1”）获得的某个值传递给.m 文件。 在 GUI 中说我有这个： GUI example 我想要做的是获取在“fc”和“slump”字段中输入的值，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”按钮回调下方运行我的 m 文件，在我的 .m 文件中，我编写了：

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

作为回报，我在运行 UI 时会收到 Undefined variable "handles" or class "handles.edit1"。我应该在我的 .m 文件或 GUI 编辑器中写什么来获取这些值？

非常感谢任何解决方案/帮助。谢谢！

Answer 1

以编程方式创建 GUI 和回调函数

不确定您对以编程方式执行此操作有多开放，但这里有一个设置，它获取字段的值并在名为 Calculate() 的回调函数中使用它们。另一个清除字段的回调函数称为Reset()。下面是显示在命令窗口中的 GUI 和回调函数的输入：

当.ButtonPushedFcn属性设置为需要运行的相应函数指示按下按钮时触发回调函数。

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