本文介绍: 使用QT完成计算器UI设计
要求：使用QT完成计算器UI设计，如下图：
程序运行结果：
代码：
mainwindow.ui
<?xml version="1.0" encoding="UTF-8"?>
<ui version="4.0">
<class>MainWindow</class>
<widget class="QMainWindow" name="MainWindow">
<property name="geometry">
<rect>
<x>0</x>
<y>0</y>
<width>540</width>
<height>960</height>
</rect>
</property>
<property name="windowTitle">
<string>计算器</string>
</property>
<widget class="QWidget" name="centralwidget">
<layout class="QVBoxLayout" name="verticalLayout_3" stretch="2,1,1,1,1,2">
<item>
<widget class="QLabel" name="label">
<property name="sizePolicy">
<sizepolicy hsizetype="Preferred" vsizetype="Expanding">
<horstretch>0</horstretch>
<verstretch>0</verstretch>
</sizepolicy>
</property>
<property name="layoutDirection">
<enum>Qt::LeftToRight</enum>
</property>
<property name="text">
<string>=</string>
</property>
</widget>
</item>
<item>
<layout class="QHBoxLayout" name="horizontalLayout">
<item>
<widget class="QPushButton" name="pushButton_4">
<property name="sizePolicy">
<sizepolicy hsizetype="Minimum" vsizetype="Expanding">
<horstretch>0</horstretch>
<verstretch>0</verstretch>
</sizepolicy>
</property>
<property name="text">
<string>MC</string>
</property>
</widget>
</item>
<item>
<widget class="QPushButton" name="pushButton_3">
<property name="sizePolicy">
<sizepolicy hsizetype="Minimum" vsizetype="Expanding">
<horstretch>0</horstretch>
<verstretch>0</verstretch>
</sizepolicy>
</property>
<property name="text">
<string>MR</string>
</property>
</widget>
</item>
<item>
<widget class="QPushButton" name="pushButton_2">
<property name="sizePolicy">
<sizepolicy hsizetype="Minimum" vsizetype="Expanding">
<horstretch>0</horstretch>
<verstretch>0</verstretch>
</sizepolicy>
</property>
<property name="text">
<string>MS</string>
</property>
</widget>
</item>
<item>
<widget class="QPushButton" name="pushButton_5">
<property name="sizePolicy">
<sizepolicy hsizetype="Minimum" vsizetype="Expanding">
<horstretch>0</horstretch>
<verstretch>0</verstretch>
</sizepolicy>
</property>
<property name="text">
<string>M+</string>
</property>
</widget>
</item>
<item>
<widget class="QPushButton" name="pushButton">
<property name="sizePolicy">
<sizepolicy hsizetype="Minimum" vsizetype="Expanding">
<horstretch>0</horstretch>
<verstretch>0</verstretch>
</sizepolicy>
</property>
<property name="text">
<string>M-</string>
</property>
</widget>
</item>
</layout>
</item>
<item>
<layout class="QHBoxLayout" name="horizontalLayout_2">
<item>
<widget class="QPushButton" name="pushButton_6">
<property name="sizePolicy">
<sizepolicy hsizetype="Minimum" vsizetype="Expanding">
<horstretch>0</horstretch>
<verstretch>0</verstretch>
</sizepolicy>
</property>
<property name="text">
<string>←</string>
</property>
</widget>
</item>
<item>
<widget class="QPushButton" name="pushButton_7">
<property name="sizePolicy">
<sizepolicy hsizetype="Minimum" vsizetype="Expanding">
<horstretch>0</horstretch>
<verstretch>0</verstretch>
</sizepolicy>
</property>
<property name="text">
<string>CE</string>
</property>
</widget>
</item>
<item>
<widget class="QPushButton" name="pushButton_8">
<property name="sizePolicy">
<sizepolicy hsizetype="Minimum" vsizetype="Expanding">
<horstretch>0</horstretch>
<verstretch>0</verstretch>
</sizepolicy>
</property>
<property name="text">
<string>C</string>
</property>
</widget>
</item>
<item>
<widget class="QPushButton" name="pushButton_9">
<property name="sizePolicy">
<sizepolicy hsizetype="Minimum" vsizetype="Expanding">
<horstretch>0</horstretch>
<verstretch>0</verstretch>
</sizepolicy>
</property>
<property name="text">
<string>±</string>
</property>
</widget>
</item>
<item>
<widget class="QPushButton" name="pushButton_10">
<property name="sizePolicy">
<sizepolicy hsizetype="Minimum" vsizetype="Expanding">
<horstretch>0</horstretch>
<verstretch>0</verstretch>
</sizepolicy>
</property>
<property name="text">
<string>√</string>
</property>
</widget>
</item>
</layout>
</item>
<item>
<layout class="QHBoxLayout" name="horizontalLayout_3">
<item>
<widget class="QPushButton" name="pushButton_11">
<property name="sizePolicy">
<sizepolicy hsizetype="Minimum" vsizetype="Expanding">
<horstretch>0</horstretch>
<verstretch>0</verstretch>
</sizepolicy>
</property>
<property name="text">
<string>7</string>
</property>
</widget>
</item>
<item>
<widget class="QPushButton" name="pushButton_12">
<property name="sizePolicy">
<sizepolicy hsizetype="Minimum" vsizetype="Expanding">
<horstretch>0</horstretch>
<verstretch>0</verstretch>
</sizepolicy>
</property>
<property name="text">
<string>8</string>
</property>
</widget>
</item>
<item>
<widget class="QPushButton" name="pushButton_13">
<property name="sizePolicy">
<sizepolicy hsizetype="Minimum" vsizetype="Expanding">
<horstretch>0</horstretch>
<verstretch>0</verstretch>
</sizepolicy>
</property>
<property name="text">
<string>9</string>
</property>
</widget>
</item>
<item>
<widget class="QPushButton" name="pushButton_14">
<property name="sizePolicy">
<sizepolicy hsizetype="Minimum" vsizetype="Expanding">
<horstretch>0</horstretch>
<verstretch>0</verstretch>
</sizepolicy>
</property>
<property name="text">
<string>/</string>
</property>
</widget>
</item>
<item>
<widget class="QPushButton" name="pushButton_15">
<property name="sizePolicy">
<sizepolicy hsizetype="Minimum" vsizetype="Expanding">
<horstretch>0</horstretch>
<verstretch>0</verstretch>
</sizepolicy>
</property>
<property name="text">
<string>%</string>
</property>
</widget>
</item>
</layout>
</item>
<item>
<layout class="QHBoxLayout" name="horizontalLayout_4">
<property name="topMargin">
<number>0</number>
</property>
<item>
<widget class="QPushButton" name="pushButton_16">
<property name="sizePolicy">
<sizepolicy hsizetype="Minimum" vsizetype="Expanding">
<horstretch>0</horstretch>
<verstretch>0</verstretch>
</sizepolicy>
</property>
<property name="text">
<string>4</string>
</property>
</widget>
</item>
<item>
<widget class="QPushButton" name="pushButton_17">
<property name="sizePolicy">
<sizepolicy hsizetype="Minimum" vsizetype="Expanding">
<horstretch>0</horstretch>
<verstretch>0</verstretch>
</sizepolicy>
</property>
<property name="text">
<string>5</string>
</property>
</widget>
</item>
<item>
<widget class="QPushButton" name="pushButton_18">
<property name="sizePolicy">
<sizepolicy hsizetype="Minimum" vsizetype="Expanding">
<horstretch>0</horstretch>
<verstretch>0</verstretch>
</sizepolicy>
</property>
<property name="text">
<string>6</string>
</property>
</widget>
</item>
<item>
<widget class="QPushButton" name="pushButton_19">
<property name="sizePolicy">
<sizepolicy hsizetype="Minimum" vsizetype="Expanding">
<horstretch>0</horstretch>
<verstretch>0</verstretch>
</sizepolicy>
</property>
<property name="text">
<string>*</string>
</property>
</widget>
</item>
<item>
<widget class="QPushButton" name="pushButton_20">
<property name="sizePolicy">
<sizepolicy hsizetype="Minimum" vsizetype="Expanding">
<horstretch>0</horstretch>
<verstretch>0</verstretch>
</sizepolicy>
</property>
<property name="text">
<string>1/x</string>
</property>
</widget>
</item>
</layout>
</item>
<item>
<layout class="QHBoxLayout" name="horizontalLayout_5" stretch="2,2,1">
<property name="spacing">
<number>6</number>
</property>
<item>
<layout class="QVBoxLayout" name="verticalLayout_2">
<property name="rightMargin">
<number>0</number>
</property>
<item>
<layout class="QHBoxLayout" name="horizontalLayout_13" stretch="0,0">
<property name="rightMargin">
<number>0</number>
</property>
<item>
<widget class="QPushButton" name="pushButton_35">
<property name="sizePolicy">
<sizepolicy hsizetype="Minimum" vsizetype="Expanding">
<horstretch>0</horstretch>
<verstretch>0</verstretch>
</sizepolicy>
</property>
<property name="text">
<string>1</string>
</property>
</widget>
</item>
<item>
<widget class="QPushButton" name="pushButton_34">
<property name="sizePolicy">
<sizepolicy hsizetype="Minimum" vsizetype="Expanding">
<horstretch>0</horstretch>
<verstretch>0</verstretch>
</sizepolicy>
</property>
<property name="text">
<string>2</string>
</property>
</widget>
</item>
</layout>
</item>
<item>
<widget class="QPushButton" name="pushButton_36">
<property name="sizePolicy">
<sizepolicy hsizetype="Minimum" vsizetype="Expanding">
<horstretch>0</horstretch>
<verstretch>0</verstretch>
</sizepolicy>
</property>
<property name="text">
<string>0</string>
</property>
</widget>
</item>
</layout>
</item>
<item>
<layout class="QVBoxLayout" name="verticalLayout">
<property name="rightMargin">
<number>0</number>
</property>
<item>
<layout class="QHBoxLayout" name="horizontalLayout_7" stretch="0,0">
<property name="spacing">
<number>6</number>
</property>
<property name="leftMargin">
<number>0</number>
</property>
<property name="rightMargin">
<number>0</number>
</property>
<item>
<widget class="QPushButton" name="pushButton_23">
<property name="sizePolicy">
<sizepolicy hsizetype="Minimum" vsizetype="Expanding">
<horstretch>0</horstretch>
<verstretch>0</verstretch>
</sizepolicy>
</property>
<property name="text">
<string>3</string>
</property>
</widget>
</item>
<item>
<widget class="QPushButton" name="pushButton_22">
<property name="sizePolicy">
<sizepolicy hsizetype="Minimum" vsizetype="Expanding">
<horstretch>0</horstretch>
<verstretch>0</verstretch>
</sizepolicy>
</property>
<property name="text">
<string>－</string>
</property>
</widget>
</item>
</layout>
</item>
<item>
<layout class="QHBoxLayout" name="horizontalLayout_12">
<property name="spacing">
<number>6</number>
</property>
<property name="leftMargin">
<number>0</number>
</property>
<property name="rightMargin">
<number>0</number>
</property>
<item>
<widget class="QPushButton" name="pushButton_32">
<property name="sizePolicy">
<sizepolicy hsizetype="Minimum" vsizetype="Expanding">
<horstretch>0</horstretch>
<verstretch>0</verstretch>
</sizepolicy>
</property>
<property name="text">
<string>.</string>
</property>
</widget>
</item>
<item>
<widget class="QPushButton" name="pushButton_33">
<property name="sizePolicy">
<sizepolicy hsizetype="Minimum" vsizetype="Expanding">
<horstretch>0</horstretch>
<verstretch>0</verstretch>
</sizepolicy>
</property>
<property name="text">
<string>+</string>
</property>
</widget>
</item>
</layout>
</item>
</layout>
</item>
<item>
<widget class="QPushButton" name="pushButton_21">
<property name="sizePolicy">
<sizepolicy hsizetype="Minimum" vsizetype="Expanding">
<horstretch>0</horstretch>
<verstretch>0</verstretch>
</sizepolicy>
</property>
<property name="text">
<string>＝</string>
</property>
</widget>
</item>
</layout>
</item>
</layout>
</widget>
<widget class="QMenuBar" name="menubar">
<property name="geometry">
<rect>
<x>0</x>
<y>0</y>
<width>540</width>
<height>28</height>
</rect>
</property>
<widget class="QMenu" name="menuview">
<property name="title">
<string>查看(V)</string>
</property>
</widget>
<widget class="QMenu" name="menuedit">
<property name="title">
<string>编辑(E)</string>
</property>
</widget>
<widget class="QMenu" name="menuhelp">
<property name="title">
<string>帮助(H)</string>
</property>
</widget>
<addaction name="menuview"/>
<addaction name="menuedit"/>
<addaction name="menuhelp"/>
</widget>
<widget class="QStatusBar" name="statusbar"/>
</widget>
<resources/>
<connections/>
</ui>
原文地址:https://blog.csdn.net/2303_77646460/article/details/135611593
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