计算器课程研究型学习技术报告.doc

Labwindows CVI课程研究型学习技术报告项目名称： 基于CVI的简易计算器 学生姓名： 学号： 项目序号： 专业： 自动化 提交时间： 指导老师： 目录一、项目概述11.1前面板设计11.2前面板各按键编辑面板11.3各个按钮功能21.4 各按钮及回调函数介绍2二、硬件设计3三、程序设计4五、运行结果20六、讨论22七、参考文献22一、项目概述1.1前面板设计1.2前面板各按键编辑面板表1 控件属性设置表名称控件类型主要属性CMD_OFFCommand Button标题：_OFF回调函数： offCMD_CLEARCommand Button标题：_AC回调函数：clearCMD_1Command Button标题：1 回调函数：cmd_1CMD_2Command Button标题：2 回调函数：cmd_2CMD_3Command Button标题：3 回调函数：cmd_3CMD_4Command Button标题：4 回调函数：cmd_4CMD_5Command Button标题：5 回调函数：cmd_5CMD_6Command Button标题：6 回调函数：cmd_6CMD_7Command Button标题：7 回调函数：cmd_7CMD_8Command Button标题：8 回调函数：cmd_8CMD_9Command Button标题：9 回调函数：cmd_9CMD_0Command Button标题：0 回调函数：cmd_0CMD_PLUSCommand Button标题：+ 回调函数：cmd_plusCMD_MINUSCommand Button标题：- 回调函数：cmd_minusCMD_MULCommand Button标题：* 回调函数：cmd_mulCMD_DIVCommand Button标题：/ 回调函数：cmd_divCMD_SQUCommand Button标题：x2 回调函数：cnd_squCMD_SQRCommand Button标题： 回调函数：cmd_sqrCMD_EQUALCommand Button标题：= 回调函数：cmd_equalCMD_DAOCommand Button标题：1/x 回调函数：cmd_daoStringstring标题：无DECORATIONdecoration标题：无DECORATION_2decoration标题：无1.3各个按钮功能1.数字键09对应数字，小数点为插入小数点；2.加减乘除对应各自的功能；3.sqrt开方键，将显示的数直接开方并显示；4.1/x 倒数键，将显示的数取倒数并显示；5.x2平方键，将显示的数平方并显示；6.退格键，删除当前显示数字的最后一位；7.AE 清屏；8.= 号将运算结果显示出来；9.OFF键关闭计算器。1.4 各按钮及回调函数介绍1.数字键：当19的按键按下后，其对应的回调函数会读取相应按键的标题值，并与显示框的字符串连接后重新显示在文本框中，字符串用字符串数组str1 存储。2.符号键：当+，*，/，键按下后，会当做运算的第一个数已经输入完毕并存于str1中，将其转化为double型数据存储进strvalue1，并置运算符号的标志位，便于等号处理。3.等号键：当等号键按下后表明运算的第二个数已经输入完毕，将当前的输入数据转化为double型数据，并存储于strvalue2中，依据符号标志位值进行相应的操作，将运算结果存储在strvalue3中，并转化为字符串送文本框显示。 4.开方键：当第一个数输入完毕后，当按下开方键后，在相应的回调函数中将第一个数由字符串转化为double型数据存储在strvalue1中，并strvalue2=sqrt(strvalue1)，将strvalue2转化为字符串并送文本框显示结果。 5.平方键：当第一个数输入完毕后，当按下平方键后，在相应的回调函数中将第一个数由字符串转化为double型数据存储在strvalue1中，并strvalue2= strvalue1*strvalue1，将strvalue2转化为字符串str2，送文本框显示结果。6.倒数键：当第一个数输入完毕后，当按下倒数键后，在相应的回调函数中将第一个数由字符串转化为double型数据存储在strvalue1中，并strvalue2=1/ (strvalue1)，将strvalue2转化为字符串str2，送文本框显示结果。7.后退键：当数输入完毕后，当按下后退键后，在相应的回调函数里，获取当前文本框的字符串，并获取当前字符串的长度，对字符串的最后字符置零并送文本框显示。8.清屏键：当数输入完毕后，当按下清屏键后，在相应的回调函数里，将文本框送“”显示。9.结束键：当按下结束键后，在相应的回调函数里关闭面板。二、硬件设计无三、程序设计四、程序代码/头文件#include #include #include #include #include #include jsq.hstatic int panelHandle;/定义两个数组，是两个要运算的字符串显示static char str150;static char str250;/定义三个值，两个运算值和一个结果值static double strvalue1;static double strvalue2;static double strvalue3;/判断加减乘除四则运算static int flag;/static int euqal=0; int main (int argc, char *argv)if (InitCVIRTE (0, argv, 0) = 0)return -1;/* out of memory */if (panelHandle = LoadPanel (0, jsq.uir, PANEL) 0)return -1;DisplayPanel (panelHandle);RunUserInterface ();DiscardPanel (panelHandle);return 0;void setvalue (void)SetCtrlVal (panelHandle, PANEL_STRING, );SetCtrlVal (panelHandle, PANEL_STRING, str1);/结束运行int CVICALLBACK off (int panel, int control, int event, void *callbackData, int eventData1, int eventData2)switch (event)case EVENT_COMMIT:QuitUserInterface (0);break;return 0;/清字符串int CVICALLBACK clear (int panel, int control, int event, void *callbackData, int eventData1, int eventData2)switch (event)case EVENT_COMMIT:str10=0; str20=0; strvalue1=0;strvalue2=0;strvalue3=0;flag=0;SetCtrlVal (panelHandle, PANEL_STRING, );break;return 0;int CVICALLBACK cmd_back (int panel, int control, int event, void *callbackData, int eventData1, int eventData2)switch (event)case EVENT_COMMIT:GetCtrlVal (panelHandle, PANEL_STRING, str1); if(str10!=/0 ) str1strlen(str1)-1=0; SetCtrlVal (panelHandle, PANEL_STRING, str1); else SetCtrlVal (panelHandle, PANEL_STRING, 0); break;return 0;/按键输入1int CVICALLBACK cmd_1 (int panel, int control, int event, void *callbackData, int eventData1, int eventData2)char labeltext2;switch (event)case EVENT_COMMIT:/ 读取控件的标题显示值GetCtrlAttribute (panelHandle, PANEL_CMD_1, ATTR_LABEL_TEXT, labeltext);/ 字符串连接，将此数值控件的标题显示值加到参数1的后面strcat (str1, labeltext);/显示文本框显示实时的参数1setvalue ();break;return 0;/按键输入2int CVICALLBACK cmd_2 (int panel, int control, int event,void *callbackData, int eventData1, int eventData2)char labeltext2;switch (event)case EVENT_COMMIT:GetCtrlAttribute (panelHandle, PANEL_CMD_2, ATTR_LABEL_TEXT, labeltext);strcat (str1, labeltext);setvalue ();break;return 0;/按键输入3int CVICALLBACK cmd_3 (int panel, int control, int event,void *callbackData, int eventData1, int eventData2)char labeltext2;switch (event)case EVENT_COMMIT:GetCtrlAttribute (panelHandle, PANEL_CMD_3, ATTR_LABEL_TEXT, labeltext);strcat (str1, labeltext);setvalue ();break;return 0;/按键输入4int CVICALLBACK cmd_4 (int panel, int control, int event,void *callbackData, int eventData1, int eventData2)char labeltext2;switch (event)case EVENT_COMMIT:GetCtrlAttribute (panelHandle, PANEL_CMD_4, ATTR_LABEL_TEXT, labeltext);strcat (str1, labeltext);setvalue ();break;return 0;/按键输入5int CVICALLBACK cmd_5 (int panel, int control, int event, void *callbackData, int eventData1, int eventData2)char labeltext2;switch (event)case EVENT_COMMIT:GetCtrlAttribute (panelHandle, PANEL_CMD_5, ATTR_LABEL_TEXT, labeltext);strcat (str1, labeltext);setvalue ();break;return 0;/按键输入6int CVICALLBACK cmd_6 (int panel, int control, int event, void *callbackData, int eventData1, int eventData2)char labeltext2;switch (event)case EVENT_COMMIT:GetCtrlAttribute (panelHandle, PANEL_CMD_6, ATTR_LABEL_TEXT, labeltext);strcat (str1, labeltext);setvalue ();break;return 0;/按键输入7int CVICALLBACK cmd_7 (int panel, int control, int event, void *callbackData, int eventData1, int eventData2)char labeltext2;switch (event)case EVENT_COMMIT:GetCtrlAttribute (panelHandle, PANEL_CMD_7, ATTR_LABEL_TEXT, labeltext);strcat (str1, labeltext);setvalue ();break;return 0;/按键输入8int CVICALLBACK cmd_8 (int panel, int control, int event, void *callbackData, int eventData1, int eventData2)char labeltext2;switch (event)case EVENT_COMMIT:GetCtrlAttribute (panelHandle, PANEL_CMD_8, ATTR_LABEL_TEXT, labeltext);strcat (str1, labeltext);setvalue ();break;return 0;/按键输入9int CVICALLBACK cmd_9 (int panel, int control, int event, void *callbackData, int eventData1, int eventData2)char labeltext2;switch (event)case EVENT_COMMIT:GetCtrlAttribute (panelHandle, PANEL_CMD_9, ATTR_LABEL_TEXT, labeltext);strcat (str1, labeltext);setvalue ();break;return 0;/按键输入0int CVICALLBACK cmd_0 (int panel, int control, int event, void *callbackData, int eventData1, int eventData2)char labeltext2;switch (event)case EVENT_COMMIT:GetCtrlAttribute (panelHandle, PANEL_CMD_0, ATTR_LABEL_TEXT, labeltext);strcat (str1, labeltext);setvalue ();break;return 0;/按键输入小数点int CVICALLBACK cmd_dot (int panel, int control, int event, void *callbackData, int eventData1, int eventData2) char labeltext2;switch (event)case EVENT_COMMIT:GetCtrlAttribute (panelHandle, PANEL_CMD_DOT, ATTR_LABEL_TEXT, labeltext);strcat (str1, labeltext);setvalue ();break;return 0;/等于int CVICALLBACK cmd_equal (int panel, int control, int event, void *callbackData, int eventData1, int eventData2)switch (event)case EVENT_COMMIT:/按下等号后参数1已经存放于strvalue1中，下面将字符串1输入结果放入strvalue2中GetCtrlVal (panelHandle, PANEL_STRING, str1);Fmt (&strvalue2, %f%s, str1); str10=0;/将参数1由字符串转化为double型数据，赋给strvalue2SetCtrlVal (panelHandle, PANEL_STRING, );switch (flag)case 1:strvalue3=strvalue1+strvalue2;Fmt (str2, %s%f, strvalue3);SetCtrlVal (panelHandle, PANEL_STRING, str2);str20=0;break;case 2:strvalue3=strvalue1-strvalue2;Fmt (str2, %s%f, strvalue3);SetCtrlVal (panelHandle, PANEL_STRING, str2);str20=0;break;case 3:strvalue3=strvalue1*strvalue2;Fmt (str2, %s%f, strvalue3);SetCtrlVal (panelHandle, PANEL_STRING, str2);str20=0;break;case 4:strvalue3=strvalue1/strvalue2;Fmt (str2, %s%f, strvalue3);SetCtrlVal (panelHandle, PANEL_STRING, str2);str20=0;/case 5:/strvalue3=strvalue1*strvalue1;/Fmt (str2, %s%f, strvalue3);/SetCtrlVal (panelHandle, PANEL_STRING, str2);/str20=0;break;default:/没有运算，直接按等于Fmt (str2, %s%f, strvalue2); SetCtrlVal (panelHandle, PANEL_STRING, str2);break;break;return 0;/运算加int CVICALLBACK cmd_plus (int panel, int control, int event, void *callbackData, int eventData1, int eventData2)switch (event)case EVENT_COMMIT:/从文本显示框获取参数1的值GetCtrlVal (panelHandle, PANEL_STRING, str1);/将参数1由字符串转化为double型数据，赋给strvalue1Fmt (&strvalue1, %f%s, str1);/字符串1清零 str10=0;SetCtrlVal (panelHandle, PANEL_STRING, +);flag=1;break;return 0;/运算减int CVICALLBACK cmd_minus (int panel, int control, int event, void *callbackData, int eventData1, int eventData2)switch (event)case EVENT_COMMIT:GetCtrlVal (panelHandle, PANEL_STRING, str1);Fmt (&strvalue1, %f%s, str1); str10=0;SetCtrlVal (panelHandle, PANEL_STRING, -);flag=2;break;return 0;/运算乘int CVICALLBACK cmd_mul (int panel, int control, int event, void *callbackData, int eventData1, int eventData2)switch (event)case EVENT_COMMIT:GetCtrlVal (panelHandle, PANEL_STRING, str1);Fmt (&strvalue1, %f%s, str1); str10=0;SetCtrlVal (panelHandle, PANEL_STRING, *);flag=3;break;return 0;/运算除int CVICALLBACK cmd_div (int panel, int control, int event, void *callbackData, int eventData1, int eventData2)switch (event)case EVENT_COMMIT:GetCtrlVal (panelHandle, PANEL_STRING, str1);Fmt (&strvalue1, %f%s, str1); str10=0;SetCtrlVal (panelHandle, PANEL_STRING, /);flag=4;break;return 0;/平方int CVICALLBACK cnd_squ (int panel, int control, int event, void *callbackData, int eventData1, int eventData2)switch (event)case EVENT_COMMIT:GetCtrlVal (panelHandle, PANEL_STRING, str1);Fmt (&strvalue1, %f%s, str1); str10=0;SetCtrlVal (panelHandle, PANEL_STRING, x2);strvalue2=strvalue1*strvalue1;Fmt (str2, %s%f, strvalue2);SetCtrlVal (panelHandle, PANEL_STRING, str2);str20=0; /flag=5; break;return 0; /开方int CVICALLBACK cmd_sqr (int panel, int control, int event, void *callbackData, int eventData1, int eventData2)switch (event)case EVENT_COMMIT:GetCtrlVal (panelHandle, PANEL_STRING, str1);Fmt (&strvalue1, %f%s, str1); str10=0;SetCtrlVal (panelHandle, PANEL_STRING, );strvalue2=sqrt(strvalue1);Fmt (str2, %s%f, strvalue2);SetCtrlVal (panelHandle, PANEL_STRING, str2);str20=0; break;return 0;/取倒数int CVICALLBACK cmd_dao (int panel, int control,