1、Matlab GUI編程教程（適用于初學(xué)者）一首先我們新建一個(gè)GUI文件：File/New/GUI 如下圖所示；下載 (42.3 KB)2009-5-31 22:19選擇Blank GUI(Default)二進(jìn)入GUI開發(fā)環(huán)境以后添加兩個(gè)編輯文本框，6個(gè)靜態(tài)文本框，和一個(gè)按鈕，布置如下圖所示；下載 (28.24 KB)2009-5-31 22:19布置好各控件以后，我們就可以來為這些控件編寫程序來實(shí)現(xiàn)兩數(shù)相加的功能了。三我們先為數(shù)據(jù)1文本框添加代碼；下載 (11.54 KB)2009-5-31 22:19點(diǎn)擊上圖所示紅色方框，選擇edit1_Callback，或者是在數(shù)據(jù)1文本框出右鍵選擇Vi

2、ew CallbacksCallback,光標(biāo)便立刻移到下面這段代碼的位置。 1. function edit1_Callback(hObject, eventdata, handles) 2. % hObject handle to edit1 (see GCBO) 3. % eventdata reserved - to be defined in a future version of MATLAB 4. % handles structure with handles and user data (see GUIDATA) 5. % Hints: get(hObject,String)

3、 returns contents of edit1 as text 6. % str2double(get(hObject,String) returns contents of edit1 as a double復(fù)制代碼然后在上面這段代碼的下面插入如下代碼： 1. input = str2num(get(hObject,String); %以字符串的形式來存儲(chǔ)數(shù)據(jù)文本框1的內(nèi)容2. if (isempty(input) 3. set(hObject,String,0); %檢查輸入是否為空. 如果為空或是輸入非數(shù)字字符,則默認(rèn)顯示為04. end5. guidata(hObject, ha

4、ndles); 說明復(fù)制代碼：這段代碼使得輸入被嚴(yán)格限制，我們不能試圖輸入一個(gè)非數(shù)字。四為edit2_Callback添加同樣一段代碼五現(xiàn)在我們?yōu)橛?jì)算按鈕添加代碼來實(shí)現(xiàn)把數(shù)據(jù)1和數(shù)據(jù)2相加的目的。用上面三的同樣的方法在m文件中找到pushbutton1_Callback代碼段如下；1. function pushbutton1_Callback(hObject, eventdata, handles)2. % hObject handle to pushbutton1 (see GCBO)3. % eventdata reserved - to be defined in a future v

5、ersion of MATLAB4. % handles structure with handles and user data (see GUIDATA)復(fù)制代碼在上面這段代碼后添加以下代碼:1. a = get(handles.edit1,String);2. b = get(handles.edit2,String);3. % a and b are variables of Strings type, and need to be converted 4. % to variables of Number type before they can be added together

6、5. total = str2num(a) + str2num(b);6. c = num2str(total);7. % need to convert the answer back into String type to display it8. set(handles.text3,String,c);9. guidata(hObject, handles);說明：復(fù)制代碼下面我們來對(duì)上面這段程序分析一下； 1. a = get(handles.edit1,String); b = get(handles.edit2,String);上面這行代碼把用戶輸入的數(shù)據(jù)存入到變量a,變量b中； % a,b是字符型變量，在計(jì)算兩者相加之前需把他們轉(zhuǎn)換為數(shù)字型2 . total = str2num(a) + str2num(b);這段代碼實(shí)現(xiàn)兩數(shù)相加c = num2str(total); 3 set(handles.text3,String,c);4 guidata(h