一個(gè)簡(jiǎn)單的MatlabGUI編程實(shí)例

1、MatlabGUI編程教程(適用于初學(xué)者)1首先我們新建一個(gè)GUI文件：File/New/GUI如下圖所示；6個(gè)靜態(tài)文本框，和一個(gè)按鈕，布置如下選擇BlankGUI(Default)2叮入GUI開發(fā)環(huán)境以后添加兩個(gè)編輯文本框，圖所示；計(jì)暮結(jié)睪口觀布置好各控件以后，我們就可以來(lái)為這些控件編寫程序來(lái)實(shí)現(xiàn)兩數(shù)相加的功能了。3我們先為數(shù)據(jù)1文本框添加代碼；Dfaad.e*回9Editor-E;lat1abvorkez現(xiàn)”i點(diǎn)擊上圖所示紅色方框，選擇editl_Callback,光標(biāo)便立刻移到下面這段代碼的位置。1.2.functionedit1_Callback(hObject,eventdata,h

2、andles)%hObjecthandletoedit1(seeGCBO)%eventdatareserved-tobedefinedinafutureversionofMATLAB%handlesstructurewithhandlesanduserdata(seeGUIDATA)%Hints:get(hObject,String)returnscontentsofedit1astext%str2double(get(hObject,String)returnscontentsofedit1asadouble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=2.%以字符串的形式來(lái)

3、存儲(chǔ)數(shù)據(jù)文本框1的內(nèi)容.如果字符串不是數(shù)字，則現(xiàn)實(shí)空白內(nèi)容str2num(get(hObject,String);%檢查輸入是否為空.如果為空,則默認(rèn)顯示為0if(isempty(input)set(hObject,String,0)endguidata(hObject,handles);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。4DDedit2_Callback添加同樣一段代碼5現(xiàn)在我們?yōu)橛?jì)算按鈕添加代碼來(lái)實(shí)現(xiàn)把數(shù)據(jù)1和數(shù)據(jù)2相加的目的。用3中同樣的方法在m文件中找到pushbuttonCallback代碼段如下；functionpushbutton1_Callback

4、(hObject,eventdata,handles)%hObjecthandletopushbutton1(seeGCBO)%eventdatareserved-tobedefinedinafutureversionofMATLAB%handlesstructurewithhandlesanduserdata(seeGUIDATA)復(fù)制代碼這段代碼實(shí)現(xiàn)兩數(shù)相加c=num2str(total);在上面這段代碼后添加以下代碼；a=get(handles.edit1,String);b=get(handles.edit12,String);%aandbarevariablesofStringsty

5、pe,andneedtobeconverted%tovariablesofNumbertypebeforetheycanbeaddedtogethertotal=str2num(a)+str2num(b);c=num2str(total);%needtoconverttheanswerbackintoStringtypetodisplayitset(handles.text1,String,c);guidata(hObject,handles);復(fù)制代碼下面我們來(lái)對(duì)上面這段程序分析一下；1.a=get(handles.edit1,String);b=get(handles.edit2,String);復(fù)制代碼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；total=str2num(a)+str2num(b);1.%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)字型復(fù)制代碼1.set(handles.text3,String,c);guidata(hObject,handles);Callback回調(diào)函數(shù)都以復(fù)制代碼以上兩行代碼分別用來(lái)更新計(jì)算結(jié)果文本框和圖形對(duì)象句柄，一般guidata(hObject,handles);j結(jié)束以更新數(shù)據(jù)程序運(yùn)行如下：這段代碼實(shí)現(xiàn)兩數(shù)相加c=num2str(total);這段代碼實(shí)現(xiàn)兩數(shù)相加c=num2str(t