C++QT课程设计：科学计算器 完整工程

#include "calculator.h" calculator::calculator(QWidget *parent) : QDialog(parent) { finish_sign=0; m_opr.push(make_unique<Hash>()); initUI(); initSLOTS(); } void calculator::initUI() { this -> setWindowTitle("计算器20171004306"); //数字pi. num_0 = new QPushButton(tr("0")); num_1 = new QPushButton(tr("1")); num_2 = new QPushButton(tr("2")); num_3 = new QPushButton(tr("3")); num_4 = new QPushButton(tr("4")); num_5 = new QPushButton(tr("5")); num_6 = new QPushButton(tr("6")); num_7 = new QPushButton(tr("7")); num_8 = new QPushButton(tr("8")); num_9 = new QPushButton(tr("9")); pi = new QPushButton(tr("pi")); dot = new QPushButton(tr(".")); //操作符 clearh = new QPushButton(tr("CHistory")); lbracket = new QPushButton(tr("(")); rbracket = new QPushButton(tr(")")); msin = new QPushButton(tr("sin")); mcos = new QPushButton(tr("cos")); mtan = new QPushButton(tr("tan")); mod = new QPushButton(tr("%")); power = new QPushButton(tr("^")); mul = new QPushButton(tr("*")); div = new QPushButton(tr("/")); add = new QPushButton(tr("+")); sub = new QPushButton(tr("-")); zero = new QPushButton(tr("ce")); back = new QPushButton(tr("c")); psqrt = new QPushButton(tr("√")); equ = new QPushButton(tr("=")); equ2 = new QPushButton(tr("=")); change = new QPushButton(tr("+/-")); mln = new QPushButton(tr("ln")); mlog = new QPushButton(tr("log")); em = new QPushButton(tr("exp()")); masin = new QPushButton(tr("asin")); macos = new QPushButton(tr("acos")); matan = new QPushButton(tr("atan")); fact = new QPushButton(tr("n!")); rec = new QPushButton(tr("1/x")); //大小设置 QSizePolicy police= num_0->sizePolicy(); police.setVerticalPolicy(QSizePolicy::Minimum); num_1->setSizePolicy(police); num_2->setSizePolicy(police); num_3->setSizePolicy(police); num_4->setSizePolicy(police); num_5->setSizePolicy(police); num_6->setSizePolicy(police); num_7->setSizePolicy(police); num_8->setSizePolicy(police); num_9->setSizePolicy(police); num_0->setSizePolicy(police); lbracket->setSizePolicy(police); rbracket->setSizePolicy(police); pi->setSizePolicy(police); msin->setSizePolicy(police); mcos->setSizePolicy(police); mtan->setSizePolicy(police); mod->setSizePolicy(police); power->setSizePolicy(police); add->setSizePolicy(police); sub->setSizePolicy(police); mul->setSizePolicy(police); div->setSizePolicy(police); zero->setSizePolicy(police); back->setSizePolicy(police); dot->setSizePolicy(police); psqrt->setSizePolicy(police); equ->setSizePolicy(police); equ2->setSizePolicy(police); change->setSizePolicy(police); mln->setSizePolicy(police); mlog->setSizePolicy(police); em->setSizePolicy(police); masin->setSizePolicy(police); macos->setSizePolicy(police); matan->setSizePolicy(police); rec->setSizePolicy(police); fact->setSizePolicy(police); clearh->setSizePolicy(police); //test num_02 = new QPushButton(tr("0")); num_12 = new QPushButton(tr("1")); num_22 = new QPushButton(tr("2")); num_32 = new QPushButton(tr("3")); num_42 = new QPushButton(tr("4")); num_52 = new QPushButton(tr("5")); num_62 = new QPushButton(tr("6")); num_72 = new QPushButton(tr("7")); num_82 = new QPushButton(tr("8")); num_92 = new QPushButton(tr("9")); dot2 = new QPushButton(tr(".")); lbracket2 = new QPushButton(tr("(")); rbracket2 = new QPushButton(tr(")")); mul2 = new QPushButton(tr("*")); div2 = new QPushButton(tr("/")); add2 = new QPushButton(tr("+")); sub2 = new QPushButton(tr("-")); zero2 = new QPushButton(tr("ce")); back2 = new QPushButton(tr("c")); equ2 = new QPushButton(tr("=")); num_12->setSizePolicy(police); num_22->setSizePolicy(police); num_32->setSizePolicy(police); num_42->setSizePolicy(police); num_52->setSizePolicy(police); num_62->setSizePolicy(police); num_72->setSizePolicy(police); num_82->setSizePolicy(police); num_92->setSizePolicy(police); num_02->setSizePolicy(police); lbracket2->setSizePolicy(police); rbracket2->setSizePolicy(police); add2->setSizePolicy(police); sub2->setSizePolicy(police); mul2->setSizePolicy(police); div2->setSizePolicy(police); zero2->setSizePolicy(police); back2->setSizePolicy(police); dot2->setSizePolicy(police); QGridLayout *test_cal = new QGridLayout; test_cal->addWidget(num_02, 4, 1, 1, 1); test_cal->addWidget(num_12, 3, 1, 1, 1); test_cal->addWidget(num_22, 3, 2, 1, 1); test_cal->addWidget(num_32, 3, 3, 1, 1); test_cal->addWidget(num_42, 2, 1, 1, 1); test_cal->addWidget(num_52, 2, 2, 1, 1); test_cal->addWidget(num_62, 2, 3, 1, 1); test_cal->addWidget(num_72, 1, 1, 1, 1); test_cal->addWidget(num_82, 1, 2, 1, 1); test_cal->addWidget(num_92, 1, 3, 1, 1); test_cal->addWidget(dot2, 4, 2, 1, 1); test_cal->addWidget(equ2, 4, 3, 1, 1); test_cal->addWidget(back2, 0, 3, 1, 1); test_cal->addWidget(zero2, 0, 2, 1, 1); test_cal->addWidget(rbracket2, 0, 1, 1, 1); test_cal->addWidget(lbracket2, 0, 0, 1, 1); test_cal->addWidget(add2, 1, 0, 1, 1); test_cal->addWidget(sub2, 2, 0, 1, 1); test_cal->addWidget(mul2, 3, 0, 1, 1); test_cal->addWidget(div2, 4, 0, 1, 1); //数字基础颜色更改 num_0->setStyleSheet("background: rgb(169,169,169)"); num_1->setStyleSheet("background: rgb(169,169,169)"); num_2->setStyleSheet("background: rgb(169,169,169)"); num_3->setStyleSheet("background: rgb(169,169,169)"); num_4->setStyleSheet("background: rgb(169,169,169)"); num_5->setStyleSheet("background: rgb(169,169,169)"); num_6->setStyleSheet("background: rgb(169,169,169)"); num_7->setStyleSheet("background: rgb(169,169,169)"); num_8->setStyleSheet("background: rgb(169,169,169)"); num_9->setStyleSheet("background: rgb(169,169,169)"); dot->setStyleSheet("background: rgb(169,169,169)"); //中部栅格 QGridLayout *num = new QGridLayout; num->addWidget(num_0, 4, 2, 1, 2); num->addWidget(num_1, 3, 2, 1, 1); num->addWidget(num_2, 3, 3, 1, 1); num->addWidget(num_3, 3, 4, 1, 1); num->addWidget(num_4, 2, 2, 1, 1); num->addWidget(num_5, 2, 3, 1, 1); num->addWidget(num_6, 2, 4, 1, 1); num->addWidget(num_7, 1, 2, 1, 1); num->addWidget(num_8, 1, 3, 1, 1); num->addWidget(num_9, 1, 4, 1, 1); num->addWidget(zero, 0, 4, 1, 1); num->addWidget(dot, 4, 4, 1, 1); num->addWidget(rbracket,0,3,1,1); num->addWidget(lbracket,0,2,1,1); num->addWidget(add, 0, 1, 1, 1); num->addWidget(sub, 1, 1, 1, 1); num->addWidget(mul, 2, 1, 1, 1); num->addWidget(div, 3, 1, 1, 1); num->addWidget(change, 4, 1, 1, 1); num->addWidget(power, 0, 0, 1, 1); num->addWidget(mod, 1, 0, 1, 1); num->addWidget(fact, 2, 0, 1, 1); num->addWidget(rec, 3, 0, 1, 1); num->addWidget(em, 4, 0, 1, 1); //顶部水平布局 QHBoxLayout *trangle = new QHBoxLayout; trangle->addWidget(msin); trangle->addWidget(mcos); trangle->addWidget(mtan); trangle->addWidget(masin); trangle->addWidget(macos); trangle->addWidget(matan); trangle->addWidget(clearh); //左部垂直布局 QVBoxLayout *tleft = new QVBoxLayout; tleft->addWidget(psqrt); tleft->addWidget(pi); tleft->addWidget(mln); tleft->addWidget(mlog); //右部垂直布局 QVBoxLayout *tright = new QVBoxLayout; tright->addWidget(back); tright->addWidget(equ); //常用界面 QHB