qt課程設(shè)計實驗報告

PAGEPAGE1程序設(shè)計課程設(shè)計實驗報告（qt實驗報告）信息科學(xué)與技術(shù)學(xué)院軟件三班高文博2010050703092011年5月

實驗1：計算當初存入本金的錢數(shù)。（12題）實驗?zāi)康?、要?目的：熟悉qt中的常用屬性；熟悉vboxhbox模型及怎樣根據(jù)需求設(shè)計控件，邊框等；熟悉各個槽函數(shù)的使用，準確的將c++語言轉(zhuǎn)換成qt語言，將控件功能與函數(shù)結(jié)合起來。要求：掌握對控件的文本色，背景色等常用屬性的設(shè)置。掌握對控件、邊框尺寸與結(jié)構(gòu)的設(shè)置掌握對函數(shù)的設(shè)置實驗設(shè)備筆記本電腦，已安裝Qt開發(fā)環(huán)境。實驗內(nèi)容、步驟先在vc++上進行編譯。應(yīng)用qt3.38進行編譯，運行。實驗步驟：根據(jù)題目需求在草紙上畫出結(jié)構(gòu)圖；根據(jù)草圖用代碼設(shè)計整體框架和控件；在qt上運行；運行成功后根據(jù)功能添加函數(shù)；在頭文件中添加頭文件。將添加的功能函數(shù)與功能控件相連；分別對每個函數(shù)進行測試;將整個程序在qt運行調(diào)試；運行通過后給每個函數(shù)寫注釋；實驗代碼如下所示A（1）主框架結(jié)構(gòu)代碼#include"gwbsave.h"GwbSave::GwbSave(QWidget*parent,constchar*name):QWidget(parent,name){ //??vBox=newQVBoxLayout(this); vBox->setMargin(5); vBox->setSpacing(5);label=newQLabel("Pleaseinputthelilv:",this,"label"); vBox->addWidget(label); //?? hBox=newQHBoxLayout(this);hBox->setMargin(5);hBox->setSpacing(5);vBox->addLayout(hBox);le1=newQLineEdit(this,"le1");hBox->addWidget(le1); //?,?? hBox2=newQHBoxLayout(this); hBox2->setMargin(5); hBox2->setSpacing(5); vBox->addLayout(hBox2);leResult=newQLineEdit(this,"leResult");leResult->setReadOnly(true); leResult->setPaletteBackgroundColor(Qt::gray); hBox->addWidget(leResult);//а???????grid=newQGridLayout(this,1,5,5,10); vBox->addLayout(grid); btnResult=newQPushButton("Result",this,"btnResult"); grid->addWidget(btnResult,0,2); btnClean=newQPushButton("Clean",this,"btnClean"); grid->addWidget(btnClean,0,3);btnExit=newQPushButton("Exit",this,"btnExit"); grid->addWidget(btnExit,0,4);connect(btnExit,SIGNAL(clicked()),this,SLOT(close()));//???connect(btnClean,SIGNAL(clicked()),this,SLOT(slotClean()));//?connect(btnResult,SIGNAL(clicked()),this,SLOT(slotExit()));//}（2）主窗體結(jié)構(gòu)視圖B（1）添加函數(shù)后的全部代碼a頭文件//#ifndefGWBSAVE_H#defineGWBSAVE_H#include<qwidget.h>#include<qlayout.h>#include<qlineedit.h>#include<qpushbutton.h>#include<qlabel.h>#include<qdatetime.h>//classGwbSave:publicQWidget{Q_OBJECTpublic:GwbSave(QWidget*parent=0,constchar*name=0);//構(gòu)造函數(shù)。inti;//doublet;//doublen;//publicslots:voidslotExit();voidslotClean();private: QVBoxLayout*vBox;//多級嵌套布局時，使用Layout更好 QHBoxLayout*hBox;//布局算式有關(guān)的控件 QHBoxLayout*hBox2; QGridLayout*grid;//布局四個按鈕。 QLabel*label; QLineEdit*le1; QLineEdit*leResult; QPushButton*btnExit,*btnClean,*btnResult;//定義幾個按鈕。 };#endifb實現(xiàn)文件#include"gwbsave.h"GwbSave::GwbSave(QWidget*parent,constchar*name):QWidget(parent,name){ //定義標簽，輸出提示語言。vBox=newQVBoxLayout(this); vBox->setMargin(5); vBox->setSpacing(5);label=newQLabel("Pleaseinputthelilv:",this,"label"); vBox->addWidget(label); //輸入利率的框體。 hBox=newQHBoxLayout(this);hBox->setMargin(5);hBox->setSpacing(5);vBox->addLayout(hBox);le1=newQLineEdit(this,"le1");hBox->addWidget(le1); //輸出結(jié)果的框體。 hBox2=newQHBoxLayout(this); hBox2->setMargin(5); hBox2->setSpacing(5); vBox->addLayout(hBox2);leResult=newQLineEdit(this,"leResult");leResult->setReadOnly(true); leResult->setPaletteBackgroundColor(Qt::gray); hBox->addWidget(leResult);//定義幾個按鈕，并實現(xiàn)其排布。grid=newQGridLayout(this,1,5,5,10); vBox->addLayout(grid); btnResult=newQPushButton("Result",this,"btnResult"); grid->addWidget(btnResult,0,2); btnClean=newQPushButton("Clean",this,"btnClean"); grid->addWidget(btnClean,0,3); btnExit=newQPushButton("Exit",this,"btnExit"); grid->addWidget(btnExit,0,4);connect(btnExit,SIGNAL(clicked()),this,SLOT(close()));//退出按鈕信號鏈接。connect(btnClean,SIGNAL(clicked()),this,SLOT(slotClean()));//清除按鈕鏈接connect(btnResult,SIGNAL(clicked()),this,SLOT(slotExit()));//結(jié)果按鈕鏈接。}voidGwbSave::slotClean()//把字符清零的槽函數(shù)。{ le1->setText(QString::number(0));leResult->setText(QString::number(0));}voidGwbSave::slotExit()//實現(xiàn)求應(yīng)該存入多少錢的函數(shù)。{inti;doublet=0;doublen;n=le1->text().toDouble(); for(i=0;i<5;i++) //i????0-4 t=(t+1000)/(1+n*12);//?? leResult->setText(QString::number(t)); }C主函數(shù)#include<qapplication.h>#include"gwbsave.h"intmain(intargc,char**argv){ QApplicationapp(argc,argv); GwbSavemainWindow; mainWindow.setGeometry(100,100,250,150); app.setMainWidget(&mainWindow); mainWindow.show(); returnapp.exec();}（2）函數(shù)功能實現(xiàn)視圖輸入利率（2）點擊”result”鍵計算出應(yīng)存入本金。點擊clean鍵結(jié)果全部清零。點擊exit退出界面。C添加的函數(shù)（1）voidGwbSave::slotClean()//把字符清零的槽函數(shù)。{ le1->setText(QString::number(0));leResult->setText(QString::number(0));}（2）voidGwbSave::slotExit()//實現(xiàn)求應(yīng)該存入