matlab簡易計算器設計步驟與回調函數(shù)設計-資料下載頁
2025-06-29 18:44本頁面
【正文】 IDATA)%等號“=”號鍵的回調函數(shù)。%get函數(shù)獲取輸入文本框edit1的string屬性，并賦值與x；x=get(,39。string39。)。%利用執(zhí)行字符串命令eval（）計算用戶輸入的表達式，得到的結果為char型；y1=eval(x)。%利用字符串輸出格式控制函數(shù)sprintf（）將字符型常量精確到小數(shù)點后十位；y=sprintf(39。%.10f39。,y1)。%利用屬性設置函數(shù)set（）將字符型結果返回到輸出文本框edit2的string屬性；set(,39。string39。,y)。（19） CLC鍵的回調函數(shù)：% Executes on button press in pushbutton19.function pushbutton19_Callback(hObject, eventdata, handles)% hObject handle to pushbutton19 (see GCBO)% eventdata reserved to be defined in a future version of MATLAB% handles structure with handles and user data (see GUIDATA)%CLC鍵的回調函數(shù)；%清空輸入文本框edit1的string屬性；set(,39。String39。,39。39。)。%清空輸出文本框edit2的string屬性；set(,39。String39。,39。039。)。（20） Delete鍵的回調函數(shù)：% Executes on button press in pushbutton18.function pushbutton18_Callback(hObject, eventdata, handles)% hObject handle to pushbutton18 (see GCBO)% eventdata reserved to be defined in a future version of MATLAB% handles structure with handles and user data (see GUIDATA)%Delete鍵的回調函數(shù)；%get（）函數(shù)獲取當前輸入文本框的string屬性，并賦值與s1；s1=get(,39。string39。)。%length(s1)函數(shù)獲取s1字符串的長度，并利用s1(1:length(s1)1)獲取s1的第一個到第（length(s1)1）個字符串，已達到刪除前一個字符的目的；s2=s1(1:（length(s1)1）)。%利用屬性設置函數(shù)set（）將字符型結果返回到輸入文本框edit1的string屬性；set(,39。string39。,s2)。（21） Exit鍵的回調函數(shù)：% Executes on button press in pushbutton17.function pushbutton17_Callback(hObject, eventdata, handles)% hObject handle to pushbutton17 (see GCBO)% eventdata reserved to be defined in a future version of MATLAB% handles structure with handles and user data (see GUIDATA)%Exit鍵的回調函數(shù)。close。（22） 菜單“關于”的回調函數(shù)：% function Untitled_8_Callback(hObject, eventdata, handles)% hObject handle to Untitled_8 (see GCBO)% eventdata reserved to be defined in a future version of MATLAB% handles structure with handles and user data (see GUIDATA)%顯示的版權信息；message1=sprintf([39。Copyright(C) 2012 *******\n\n39。,39。\n\n39。,39。MyCalculator\n\n39。])。%讀取圖像，供關于消息框顯示圖標；[IconData,IconCMap]=imread(39。39。)。%彈出消息框；about=msgbox(message1,39。版權信息39。,39。custom39。,IconData,IconCMap)。%在按下確定按鈕，關閉關于消息框前，不做其他操作；waitfor(about)。調試運行程序：
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