C++ 在QPushButton上调用另一个小部件应用程序
我想在按钮上调用另一个小部件应用程序计算器。直到这一次，我取得了成功，但它在父窗口小部件上重叠 主窗口C++ 在QPushButton上调用另一个小部件应用程序,c++,qt,qt5,qwidget,qpushbutton,C++,Qt,Qt5,Qwidget,Qpushbutton,我想在按钮上调用另一个小部件应用程序计算器。直到这一次，我取得了成功，但它在父窗口小部件上重叠 主窗口 #ifndef MAINWINDOW_H #define MAINWINDOW_H #include <QWidget> class QLineEdit; class QComboBox; class calculator; namespace Ui { class MainWindow; } class MainWindow : public QWidget {
#ifndef MAINWINDOW_H
#define MAINWINDOW_H
#include <QWidget>
class QLineEdit;
class QComboBox;
class calculator;
namespace Ui {
class MainWindow;
}
class MainWindow : public QWidget
{
Q_OBJECT
public:MainWindow();
public slots:
void calcButtonPressed();
private:
calculator *calc;
};
#endif // MAINWINDOW_H
#include<QtWidgets>
#include<cmath>
#include "button.h"
#include "calculator.h"
calculator::calculator(QWidget *parent): QWidget(parent)
{
sumInMemory=0.0;
sumSoFar=0.0;
factorSoFar=0.0;
waitingForOperand=true;
display=new QLineEdit("0");
display->setReadOnly(true);
display->setAlignment(Qt::AlignRight);
display->setMaxLength(15);
QFont font=display->font();
font.setPointSize(font.pointSize()+8);
display->setFont(font);
for (int i = 0; i < NumDigitButton; ++i) {
digitButton[i] = createButton(QString::number(i), SLOT(digitClicked()));
}
button *pointButton =createButton(tr("."),SLOT(pointClicked()));
button *changeSignButton=createButton(tr("\30\261"),SLOT(changeSignClicked()));
button *backspaceButton=createButton(tr("Backspace"),SLOT(backspaceClicked()));
button *clearButton=createButton(tr("Clear"),SLOT(clear()));
button *clearAllButton=createButton(tr("Clear All"),SLOT(clearAll));
button *clearMemoryButton=createButton(tr("MC"),SLOT(clearMemory()));
button *readMemoryButton=createButton(tr("MR"),SLOT(readMemory()));
button *setMemoryButton=createButton(tr("MS"),SLOT(setMemory()));
button *addToMemoryButton=createButton(tr("M+"),SLOT(addToMemory()));
button *divisionButton = createButton(tr("\303\267"), SLOT(multiplicativeOperatorClicked()));
button *timesButton = createButton(tr("\303\227"), SLOT(multiplicativeOperatorClicked()));
button *minusButton = createButton(tr("-"), SLOT(additiveOperatorClicked()));
button *plusButton = createButton(tr("+"), SLOT(additiveOperatorClicked()));
button *squareRootButton = createButton(tr("Sqrt"), SLOT(unaryOperatorClicked()));
button *powerButton = createButton(tr("x\302\262"), SLOT(unaryOperatorClicked()));
button *reciprocalButton = createButton(tr("1/x"), SLOT(unaryOperatorClicked()));
button *equalButton = createButton(tr("="), SLOT(equalClicked()));
QGridLayout *mainLayout = new QGridLayout;
mainLayout->setSizeConstraint(QLayout::SetFixedSize);
mainLayout->addWidget(display, 0, 0, 1, 6);
mainLayout->addWidget(backspaceButton, 1, 0, 1, 2);
mainLayout->addWidget(clearButton, 1, 2, 1, 2);
mainLayout->addWidget(clearAllButton, 1, 4, 1, 2);
mainLayout->addWidget(clearMemoryButton, 2, 0);
mainLayout->addWidget(readMemoryButton, 3, 0);
mainLayout->addWidget(setMemoryButton, 4, 0);
mainLayout->addWidget(addToMemoryButton, 5, 0);
for (int i = 1; i < NumDigitButton; ++i) {
int row = ((9 - i) / 3) + 2;
int column = ((i - 1) % 3) + 1;
mainLayout->addWidget(digitButton[i], row, column);
}
mainLayout->addWidget(digitButton[0], 5, 1);
mainLayout->addWidget(pointButton, 5, 2);
mainLayout->addWidget(changeSignButton, 5, 3);
mainLayout->addWidget(divisionButton, 2, 4);
mainLayout->addWidget(timesButton, 3, 4);
mainLayout->addWidget(minusButton, 4, 4);
mainLayout->addWidget(plusButton, 5, 4);
mainLayout->addWidget(squareRootButton, 2, 5);
mainLayout->addWidget(powerButton, 3, 5);
mainLayout->addWidget(reciprocalButton, 4, 5);
mainLayout->addWidget(equalButton, 5, 5);
setLayout(mainLayout);
setWindowTitle(tr("calculator"));
}
void calculator::digitClicked()
{
button *clickedButton = qobject_cast<button *>(sender());
int digitValue = clickedButton->text().toInt();
if (display->text() == "0" && digitValue == 0.0)
return;
if (waitingForOperand) {
display->clear();
waitingForOperand = false;
}
display->setText(display->text() + QString::number(digitValue));
}
void calculator::unaryOperatorClicked()
{
button *clickedButton = qobject_cast<button *>(sender());
QString clickedOperator = clickedButton->text();
double operand = display->text().toDouble();
double result = 0.0;
if (clickedOperator == tr("Sqrt")) {
if (operand < 0.0) {
abortOperation();
return;
}
result = std::sqrt(operand);
} else if (clickedOperator == tr("x\302\262")) {
result = std::pow(operand, 2.0);
} else if (clickedOperator == tr("1/x")) {
if (operand == 0.0) {
abortOperation();
return;
}
result = 1.0 / operand;
}
display->setText(QString::number(result));
waitingForOperand = true;
}
void calculator::additiveOperatorClicked()
{
button *clickedButton = qobject_cast<button *>(sender());
QString clickedOperator = clickedButton->text();
double operand = display->text().toDouble();
if (!pendingMultiplicativeOperator.isEmpty()) {
if (!calculate(operand, pendingMultiplicativeOperator)) {
abortOperation();
return;
}
display->setText(QString::number(factorSoFar));
operand = factorSoFar;
factorSoFar = 0.0;
pendingMultiplicativeOperator.clear();
}
if (!pendingAdditiveOperator.isEmpty()) {
if (!calculate(operand, pendingAdditiveOperator)) {
abortOperation();
return;
}
display->setText(QString::number(sumSoFar));
} else {
sumSoFar = operand;
}
pendingAdditiveOperator = clickedOperator;
waitingForOperand = true;
}
void calculator::multiplicativeOperatorClicked()
{
button *clickedButton = qobject_cast<button *>(sender());
QString clickedOperator = clickedButton->text();
double operand = display->text().toDouble();
if (!pendingMultiplicativeOperator.isEmpty()) {
if (!calculate(operand, pendingMultiplicativeOperator)) {
abortOperation();
return;
}
display->setText(QString::number(factorSoFar));
} else {
factorSoFar = operand;
}
pendingMultiplicativeOperator = clickedOperator;
waitingForOperand = true;
}
void calculator::equalClicked()
{
double operand = display->text().toDouble();
if (!pendingMultiplicativeOperator.isEmpty()) {
if (!calculate(operand, pendingMultiplicativeOperator)) {
abortOperation();
return;
}
operand = factorSoFar;
factorSoFar = 0.0;
pendingMultiplicativeOperator.clear();
}
if (!pendingAdditiveOperator.isEmpty()) {
if (!calculate(operand, pendingAdditiveOperator)) {
abortOperation();
return;
}
pendingAdditiveOperator.clear();
} else {
sumSoFar = operand;
}
display->setText(QString::number(sumSoFar));
sumSoFar = 0.0;
waitingForOperand = true;
}
void calculator::pointClicked()
{
if (waitingForOperand)
display->setText("0");
if (!display->text().contains('.'))
display->setText(display->text() + tr("."));
waitingForOperand = false;
}
void calculator::changeSignClicked()
{
QString text = display->text();
double value = text.toDouble();
if (value > 0.0) {
text.prepend(tr("-"));
} else if (value < 0.0) {
text.remove(0, 1);
}
display->setText(text);
}
void calculator::backspaceClicked()
{
if (waitingForOperand)
return;
QString text = display->text();
text.chop(1);
if (text.isEmpty()) {
text = "0";
waitingForOperand = true;
}
display->setText(text);
}
void calculator::clear()
{
display->setText("0");
waitingForOperand = true;
}
void calculator::clearAll()
{
sumSoFar = 0.0;
factorSoFar = 0.0;
pendingAdditiveOperator.clear();
pendingMultiplicativeOperator.clear();
display->setText("0");
waitingForOperand = true;
}
void calculator::clearMemory()
{
sumInMemory = 0.0;
}
void calculator::readMemory()
{
display->setText(QString::number(sumInMemory));
waitingForOperand = true;
}
void calculator::setMemory()
{
equalClicked();
sumInMemory = display->text().toDouble();
}
void calculator::addToMemory()
{
equalClicked();
sumInMemory += display->text().toDouble();
}
button *calculator::createButton(const QString &text, const char *member)
{
button *button1 = new button(text);
connect(button1, SIGNAL(clicked()), this, member);
return button1;
}
void calculator::abortOperation()
{
clearAll();
display->setText(tr("####"));
}
bool calculator::calculate(double rightOperand, const QString &pendingOperator)
{
if (pendingOperator == tr("+")) {
sumSoFar += rightOperand;
} else if (pendingOperator == tr("-")) {
sumSoFar -= rightOperand;
} else if (pendingOperator == tr("\303\227")) {
factorSoFar *= rightOperand;
} else if (pendingOperator == tr("\303\267")) {
if (rightOperand == 0.0)
return false;
factorSoFar /= rightOperand;
}
return true;
}
#包括
#包括
#包括“button.h”
#包括“calculator.h”
计算器：：计算器（QWidget*parent）：QWidget（parent）
{
sumInMemory=0.0；
sumSoFar=0.0；
系数OFAR=0.0；
WaitingForOperator=true；
显示=新QLineEdit（“0”）；
显示->设置只读（真）；
显示->设置对齐（Qt:：AlignRight）；
显示->设置最大长度（15）；
QFont font=显示->字体（）；
font.setPointSize（font.pointSize（）+8）；
显示->设置字体（字体）；
对于（int i=0；isetSizeConstraint（QLayout:：SetFixedSize）；
mainLayout->addWidget（显示，0,0,1,6）；
mainLayout->addWidget（backspaceButton，1,0,1,2）；
mainLayout->addWidget（clearButton，1,2,1,2）；
mainLayout->addWidget（clearAllButton，1,4,1,2）；
mainLayout->addWidget（clearMemoryButton，2,0）；
mainLayout->addWidget（readMemoryButton，3,0）；
mainLayout->addWidget（setMemoryButton，4,0）；
mainLayout->addWidget（addToMemoryButton，5,0）；
对于（int i=1；iaddWidget（数字按钮[i]，行，列）；
}
mainLayout->addWidget（数字按钮[0]，5，1）；
mainLayout->addWidget（点按钮，5,2）；
mainLayout->addWidget（changeSignButton，5,3）；
mainLayout->addWidget（分区按钮，2,4）；
mainLayout->addWidget（时间按钮，3,4）；
mainLayout->addWidget（最小按钮，4,4）；
mainLayout->addWidget（plusButton，5,4）；
mainLayout->addWidget（squareRootButton，2,5）；
mainLayout->addWidget（电源按钮，3,5）；
mainLayout->addWidget（交互按钮，4,5）；
mainLayout->addWidget（equalButton，5,5）；
设置布局（主布局）；
setWindowTitle（tr（“计算器”））；
}
无效计算器：：digitClicked（）
{
按钮*clickedButton=qobject_cast（发送方（））；
int digitValue=单击按钮->文本（）.toInt（）；
如果（显示->文本（）=“0”&&digitValue==0.0）
返回；
if（等待操作数）{
显示->清除（）；
WaitingForOperator=false；
}
display->setText（display->text（）+QString:：number（digitValue））；
}
无效计算器：：unaryOperatorClicked（）
{
按钮*clickedButton=qobject_cast（发送方（））；
QString clickedOperator=clickedButton->text（）；
双操作数=显示->文本（）；
双结果=0.0；
如果（单击运算符==tr（“Sqrt”））{
if（操作数<0.0）{
中止操作（）；
返回；
}
结果=标准：：sqrt（操作数）；
}否则如果（单击运算符==tr（“x\302\262”））{
结果=标准：：功率（操作数，2.0）；
}否则如果（单击运算符==tr（“1/x”））{
如果（操作数==0.0）{
中止操作（）；
返回；
}
结果=1.0/操作数；
}
显示->设置文本（QString:：number（结果））；
WaitingForOperator=true；
}
无效计算器：：additiveOperatorClicked（）
{
按钮*clickedButton=qobject_cast（发送方（））；
QString clickedOperator=clickedButton->text（）；
双操作数=显示->文本（）；
如果（！PendingMultiplicationOperator.isEmpty（））{
if（！计算（操作数，挂起乘法运算符））{
中止操作（）；
返回；
}
显示->设置文本（QString:：number（factorSoFar））；
操作数=factorSoFar；
系数OFAR=0.0；
挂起乘法运算器.clear（）；
}
如果（！pendingAdditiveOperator.isEmpty（））{
if（！calculate（操作数，pendingAdditiveOperator））{
中止操作（）；
返回；
}
显示->设置文本（QString:：number（sumSoFar））；
}否则{
sumSoFar=操作数；
}
pendingAdditiveOperator=单击Operator；
WaitingForOperator=true；
}
void calculator:：乘法运算器clicked（）
{
按钮*clickedButton=qobject_cast（发送方（））；
QString clickedOperator=clickedButton->text（）；
双操作数=显示->文本（）；
如果（！PendingMultiplicationOperator.isEmpty（））{
if（！计算（操作数，挂起乘法运算符））{
中止操作（）；
返回；
}
显示->设置文本（QString:：number（factorSoFar））；
}否则{
factorSoFar=操作数；
}
Pending乘法运算器=单击运算器；
WaitingForOperator=true；
}
无效计算器：：equalC
#include<QtWidgets>
#include<cmath>
#include "button.h"
#include "calculator.h"
calculator::calculator(QWidget *parent): QWidget(parent)
{
sumInMemory=0.0;
sumSoFar=0.0;
factorSoFar=0.0;
waitingForOperand=true;
display=new QLineEdit("0");
display->setReadOnly(true);
display->setAlignment(Qt::AlignRight);
display->setMaxLength(15);
QFont font=display->font();
font.setPointSize(font.pointSize()+8);
display->setFont(font);
for (int i = 0; i < NumDigitButton; ++i) {
digitButton[i] = createButton(QString::number(i), SLOT(digitClicked()));
}
button *pointButton =createButton(tr("."),SLOT(pointClicked()));
button *changeSignButton=createButton(tr("\30\261"),SLOT(changeSignClicked()));
button *backspaceButton=createButton(tr("Backspace"),SLOT(backspaceClicked()));
button *clearButton=createButton(tr("Clear"),SLOT(clear()));
button *clearAllButton=createButton(tr("Clear All"),SLOT(clearAll));
button *clearMemoryButton=createButton(tr("MC"),SLOT(clearMemory()));
button *readMemoryButton=createButton(tr("MR"),SLOT(readMemory()));
button *setMemoryButton=createButton(tr("MS"),SLOT(setMemory()));
button *addToMemoryButton=createButton(tr("M+"),SLOT(addToMemory()));
button *divisionButton = createButton(tr("\303\267"), SLOT(multiplicativeOperatorClicked()));
button *timesButton = createButton(tr("\303\227"), SLOT(multiplicativeOperatorClicked()));
button *minusButton = createButton(tr("-"), SLOT(additiveOperatorClicked()));
button *plusButton = createButton(tr("+"), SLOT(additiveOperatorClicked()));
button *squareRootButton = createButton(tr("Sqrt"), SLOT(unaryOperatorClicked()));
button *powerButton = createButton(tr("x\302\262"), SLOT(unaryOperatorClicked()));
button *reciprocalButton = createButton(tr("1/x"), SLOT(unaryOperatorClicked()));
button *equalButton = createButton(tr("="), SLOT(equalClicked()));
QGridLayout *mainLayout = new QGridLayout;
mainLayout->setSizeConstraint(QLayout::SetFixedSize);
mainLayout->addWidget(display, 0, 0, 1, 6);
mainLayout->addWidget(backspaceButton, 1, 0, 1, 2);
mainLayout->addWidget(clearButton, 1, 2, 1, 2);
mainLayout->addWidget(clearAllButton, 1, 4, 1, 2);
mainLayout->addWidget(clearMemoryButton, 2, 0);
mainLayout->addWidget(readMemoryButton, 3, 0);
mainLayout->addWidget(setMemoryButton, 4, 0);
mainLayout->addWidget(addToMemoryButton, 5, 0);
for (int i = 1; i < NumDigitButton; ++i) {
int row = ((9 - i) / 3) + 2;
int column = ((i - 1) % 3) + 1;
mainLayout->addWidget(digitButton[i], row, column);
}
mainLayout->addWidget(digitButton[0], 5, 1);
mainLayout->addWidget(pointButton, 5, 2);
mainLayout->addWidget(changeSignButton, 5, 3);
mainLayout->addWidget(divisionButton, 2, 4);
mainLayout->addWidget(timesButton, 3, 4);
mainLayout->addWidget(minusButton, 4, 4);
mainLayout->addWidget(plusButton, 5, 4);
mainLayout->addWidget(squareRootButton, 2, 5);
mainLayout->addWidget(powerButton, 3, 5);
mainLayout->addWidget(reciprocalButton, 4, 5);
mainLayout->addWidget(equalButton, 5, 5);
setLayout(mainLayout);
setWindowTitle(tr("calculator"));
}
void calculator::digitClicked()
{
button *clickedButton = qobject_cast<button *>(sender());
int digitValue = clickedButton->text().toInt();
if (display->text() == "0" && digitValue == 0.0)
return;
if (waitingForOperand) {
display->clear();
waitingForOperand = false;
}
display->setText(display->text() + QString::number(digitValue));
}
void calculator::unaryOperatorClicked()
{
button *clickedButton = qobject_cast<button *>(sender());
QString clickedOperator = clickedButton->text();
double operand = display->text().toDouble();
double result = 0.0;
if (clickedOperator == tr("Sqrt")) {
if (operand < 0.0) {
abortOperation();
return;
}
result = std::sqrt(operand);
} else if (clickedOperator == tr("x\302\262")) {
result = std::pow(operand, 2.0);
} else if (clickedOperator == tr("1/x")) {
if (operand == 0.0) {
abortOperation();
return;
}
result = 1.0 / operand;
}
display->setText(QString::number(result));
waitingForOperand = true;
}
void calculator::additiveOperatorClicked()
{
button *clickedButton = qobject_cast<button *>(sender());
QString clickedOperator = clickedButton->text();
double operand = display->text().toDouble();
if (!pendingMultiplicativeOperator.isEmpty()) {
if (!calculate(operand, pendingMultiplicativeOperator)) {
abortOperation();
return;
}
display->setText(QString::number(factorSoFar));
operand = factorSoFar;
factorSoFar = 0.0;
pendingMultiplicativeOperator.clear();
}
if (!pendingAdditiveOperator.isEmpty()) {
if (!calculate(operand, pendingAdditiveOperator)) {
abortOperation();
return;
}
display->setText(QString::number(sumSoFar));
} else {
sumSoFar = operand;
}
pendingAdditiveOperator = clickedOperator;
waitingForOperand = true;
}
void calculator::multiplicativeOperatorClicked()
{
button *clickedButton = qobject_cast<button *>(sender());
QString clickedOperator = clickedButton->text();
double operand = display->text().toDouble();
if (!pendingMultiplicativeOperator.isEmpty()) {
if (!calculate(operand, pendingMultiplicativeOperator)) {
abortOperation();
return;
}
display->setText(QString::number(factorSoFar));
} else {
factorSoFar = operand;
}
pendingMultiplicativeOperator = clickedOperator;
waitingForOperand = true;
}
void calculator::equalClicked()
{
double operand = display->text().toDouble();
if (!pendingMultiplicativeOperator.isEmpty()) {
if (!calculate(operand, pendingMultiplicativeOperator)) {
abortOperation();
return;
}
operand = factorSoFar;
factorSoFar = 0.0;
pendingMultiplicativeOperator.clear();
}
if (!pendingAdditiveOperator.isEmpty()) {
if (!calculate(operand, pendingAdditiveOperator)) {
abortOperation();
return;
}
pendingAdditiveOperator.clear();
} else {
sumSoFar = operand;
}
display->setText(QString::number(sumSoFar));
sumSoFar = 0.0;
waitingForOperand = true;
}
void calculator::pointClicked()
{
if (waitingForOperand)
display->setText("0");
if (!display->text().contains('.'))
display->setText(display->text() + tr("."));
waitingForOperand = false;
}
void calculator::changeSignClicked()
{
QString text = display->text();
double value = text.toDouble();
if (value > 0.0) {
text.prepend(tr("-"));
} else if (value < 0.0) {
text.remove(0, 1);
}
display->setText(text);
}
void calculator::backspaceClicked()
{
if (waitingForOperand)
return;
QString text = display->text();
text.chop(1);
if (text.isEmpty()) {
text = "0";
waitingForOperand = true;
}
display->setText(text);
}
void calculator::clear()
{
display->setText("0");
waitingForOperand = true;
}
void calculator::clearAll()
{
sumSoFar = 0.0;
factorSoFar = 0.0;
pendingAdditiveOperator.clear();
pendingMultiplicativeOperator.clear();
display->setText("0");
waitingForOperand = true;
}
void calculator::clearMemory()
{
sumInMemory = 0.0;
}
void calculator::readMemory()
{
display->setText(QString::number(sumInMemory));
waitingForOperand = true;
}
void calculator::setMemory()
{
equalClicked();
sumInMemory = display->text().toDouble();
}
void calculator::addToMemory()
{
equalClicked();
sumInMemory += display->text().toDouble();
}
button *calculator::createButton(const QString &text, const char *member)
{
button *button1 = new button(text);
connect(button1, SIGNAL(clicked()), this, member);
return button1;
}
void calculator::abortOperation()
{
clearAll();
display->setText(tr("####"));
}
bool calculator::calculate(double rightOperand, const QString &pendingOperator)
{
if (pendingOperator == tr("+")) {
sumSoFar += rightOperand;
} else if (pendingOperator == tr("-")) {
sumSoFar -= rightOperand;
} else if (pendingOperator == tr("\303\227")) {
factorSoFar *= rightOperand;
} else if (pendingOperator == tr("\303\267")) {
if (rightOperand == 0.0)
return false;
factorSoFar /= rightOperand;
}
return true;
}