QT 4 计算器程序框架

#include "widget.h" #define ButtonSizeH 30 #define ButtonSizeW 30 #define OutputWinH 25 #define OutputWinW 255 #define MainWindowH 175 #define MainWindowW 275 myPushButton::myPushButton(QString str) { strV = str; setText(str); connect(this, SIGNAL(clicked()), this, SLOT(sendStr())); } void myPushButton::sendStr(void) { strV = text(); emit pressed(strV); } Widget::Widget() { this->setWindowTitle(QString("p_x_l calculattor")); this->setMaximumSize(MainWindowW,MainWindowH); this->setMinimumSize(MainWindowW,MainWindowH); initNumButton(); initLayout(); } void MyLineEdit::OutputChanged(QString StrNum) { this->setText(StrNum); } void Widget::initNumButton(void) { /*数字按钮*/ OutPutWindow = new MyLineEdit(); OutPutWindow->setMaximumSize(OutputWinW, OutputWinH); OutPutWindow->setMinimumSize(OutputWinW, OutputWinH); Button_0 = new myPushButton(QString("0")); Button_0->setMaximumSize(ButtonSizeW, ButtonSizeH); Button_0->setMinimumSize(ButtonSizeW, ButtonSizeH); connect(Button_0, SIGNAL(pressed(const QString&)), OutPutWindow, SLOT(OutputChanged(QString))); Button_1 = new myPushButton("1"); Button_1->setMaximumSize(ButtonSizeW, ButtonSizeH); Button_1->setMinimumSize(ButtonSizeW, ButtonSizeH); connect(Button_1, SIGNAL(pressed(const QString&)), OutPutWindow, SLOT(OutputChanged(QString))); Button_2 = new myPushButton("2"); Button_2->setMaximumSize(ButtonSizeW, ButtonSizeH); Button_2->setMinimumSize(ButtonSizeW, ButtonSizeH); connect(Button_2, SIGNAL(pressed(const QString&)), OutPutWindow, SLOT(OutputChanged(QString))); Button_3 = new myPushButton("3"); Button_3->setMaximumSize(ButtonSizeW, ButtonSizeH); Button_3->setMinimumSize(ButtonSizeW, ButtonSizeH); connect(Button_3, SIGNAL(pressed(const QString&)), OutPutWindow, SLOT(OutputChanged(QString))); Button_4 = new myPushButton("4"); Button_4->setMaximumSize(ButtonSizeW, ButtonSizeH); Button_4->setMinimumSize(ButtonSizeW, ButtonSizeH); connect(Button_4, SIGNAL(pressed(const QString&)), OutPutWindow, SLOT(OutputChanged(QString))); Button_5 = new myPushButton("5"); Button_5->setMaximumSize(ButtonSizeW, ButtonSizeH); Button_5->setMinimumSize(ButtonSizeW, ButtonSizeH); connect(Button_5, SIGNAL(pressed(const QString&)), OutPutWindow, SLOT(OutputChanged(QString))); Button_6 = new myPushButton("6"); Button_6->setMaximumSize(ButtonSizeW, ButtonSizeH); Button_6->setMinimumSize(ButtonSizeW, ButtonSizeH); connect(Button_6, SIGNAL(pressed(const QString&)), OutPutWindow, SLOT(OutputChanged(QString))); Button_7 = new myPushButton("7"); Button_7->setMaximumSize(ButtonSizeW, ButtonSizeH); Button_7->setMinimumSize(ButtonSizeW, ButtonSizeH); connect(Button_7, SIGNAL(pressed(const QString&)), OutPutWindow, SLOT(OutputChanged(QString))); Button_8 = new myPushButton("8"); Button_8->setMaximumSize(ButtonSizeW, ButtonSizeH); Button_8->setMinimumSize(ButtonSizeW, ButtonSizeH); connect(Button_8, SIGNAL(pressed(const QString&)), OutPutWindow, SLOT(OutputChanged(QString))); Button_9 = new myPushButton("9"); Button_9->setMaximumSize(ButtonSizeW, ButtonSizeH); Button_9->setMinimumSize(ButtonSizeW, ButtonSizeH); connect(Button_9, SIGNAL(pressed(const QString&)), OutPutWindow, SLOT(OutputChanged(QString))); Button_Sign = new myPushButton("+/-"); Button_Sign->setMaximumSize(ButtonSizeW, ButtonSizeH); Button_Sign->setMinimumSize(ButtonSizeW, ButtonSizeH); connect(Button_Sign, SIGNAL(pressed(const QString&)), OutPutWindow, SLOT(OutputChanged(QString))); Button_Point = new myPushButton("."); Button_Point->setMaximumSize(ButtonSizeW, ButtonSizeH); Button_Point->setMinimumSize(ButtonSizeW, ButtonSizeH); connect(Button_Point, SIGNAL(pressed(const QString&)), OutPutWindow, SLOT(OutputChanged(QString))); /*运算符按钮*/ Button_Plus = new myPushButton("+"); Button_Plus->setMaximumSize(ButtonSizeW, ButtonSizeH); Button_Plus->setMinimumSize(ButtonSizeW, ButtonSizeH); Button_Minus = new myPushButton("-"); Button_Minus->setMaximumSize(ButtonSizeW, ButtonSizeH); Button_Minus->setMinimumSize(ButtonSizeW, ButtonSizeH); Button_Mutiply = new myPushButton("*"); Button_Mutiply->setMaximumSize(ButtonSizeW, ButtonSizeH); Button_Mutiply->setMinimumSize(ButtonSizeW, ButtonSizeH); Button_Divide = new myPushButton("/"); Button_Divide->setMaximumSize(ButtonSizeW, ButtonSizeH); Button_Divide->setMinimumSize(ButtonSizeW, ButtonSizeH); } void Widget::initLayout(void) { NumLayout = new QGridLayout; NumLayout->setRowStretch(4, 1); NumLayout->setColumnStretch(3,1); OperatorLayout = new QGridLayout; OperatorLayout->setRowStretch(4, 1); OperatorLayout->setColumnStretch(3, 1); Outlayout = new QGridLayout; OperatorLayout->setRowStretch(2, 1); OperatorLayout->setColumnStretch(2, 1); MainLayout = new QGridLayout; MainLayout->addLayout(Outlayout, 0, 0, 0); MainLayout->addLayout(NumLayout, 1, 0, 0); MainLayout->addLayout(OperatorLayout, 1, 1, 0); setLayout(MainLayout); Outlayout->addWidget(OutPutWindow, 0, 0, 0); /*数字图层区*/ NumLayout->addWidget(Button_0, 0, 0, 0); NumLayout->addWidget(Button_1, 0, 1, 0); NumLayout->addWidget(Button_2, 0, 2, 0); NumLayout->addWidget(Button_3, 1, 0, 0); NumLayout->addWidget(Button_4, 1, 1, 0); NumLayout->addWidget(Button_5, 1, 2, 0); NumLayout->addWidget(Button_6, 2, 0, 0); NumLayout->addWidget(Button_7, 2, 1, 0); NumLayout->addWidget(Button_8, 2, 2, 0); NumLayout->addWidget(Button_9, 3, 0, 0); NumLayout->addWidget(Button_Sign, 3, 1, 0); NumLayout->addWidget(Button_Point, 3, 2, 0); /*运算符图层区*/ OperatorLayout->addWidget(Button_Plus, 0, 0, 0); OperatorLayout->addWidget(Button_Minus, 0, 1, 0); OperatorLayout->addWidget(Button_Mutiply, 0, 2, 0); OperatorLayout->addWidget(Button_Divide, 0, 3, 0); }