本篇内容介绍了“Qt界面美化之怎么自定义qss样式表”的有关知识，在实际案例的操作过程中，不少人都会遇到这样的困境，接下来就让小编带领大家学习一下如何处理这些情况吧！希望大家仔细阅读，能够学有所成！
一、新建qrc文件，添加和保存资源文件
首先新建个qrc资源文件，使用Qtcreater的话可以直接在菜单中找新建->资源文件(qrc)。当然这个文件也可以手工创建。文件内容如下image.qrc：
<RCC> <qresource prefix="/"> <file>qss/gray.css</file> <file>image/shutdownicon.png</file> <file>image/shutdownlogo.png</file> <file>image/shutdownpushbutton.png</file> <file>image/shutdownpushbuttonpress.png</file> <file>image/spinner.png</file> <file>image/tips.png</file> <file>image/calendar.png</file> </qresource></RCC>在根目录里创建一个qss文件夹，里面创建全局样式表css文件。（建议这么搞，样式都统一放到样式表文件里，方便后续修改。不建议直接在界面上使用QtDesigner去改样式。）
二、新建css样式表文件
style.css样式文件内容如下：
QPalette{background:#e5e5e5;} QLabel,QLineEdit,QTextEdit,QPlainTextEdit,QGroupBox,QComboBox,QDateEdit,QTimeEdit,QDateTimeEdit,QTreeView,QListView,QTableView, QLineEdit,QTextEdit,QPlainTextEdit { } QLabel#image1{ } QLabel#text1{ color: #004695; font: 75 18pt "微软雅黑";} QLineEdit[echoMode="2"] { lineedit-password-character: 9679;} .QGroupBox { border: 1px solid #A9A9A9; border-radius: 5px;} .QPushButton { border-style: none; border: 1px solid #A9A9A9; color: #FFFFFF; padding: 5px; border-radius: 40px; background: rgb(46,118,199);} .QPushButton:hover { background: qlineargradient(spread:pad, x1:0, y1:0, x2:0, y2:1, stop:0 rgb(46,118,199), stop:1 #C1C1C1);} .QPushButton:pressed { background: qlineargradient(spread:pad, x1:0, y1:0, x2:0, y2:1, stop:0 #004695, stop:1 #004695);} .QPushButton:disabled { color: #838383; background: #F4F4F4;} .QPushButton#btnShutDown { background-image: url(:/image/shutdownicon.png); background-position: left; background-repeat: no-repeat; background-origin:content; padding-left:90px; text-align: right; padding-right:120px; font: 25 20pt "Microsoft YaHei"; } .QPushButton#btnShutDown:pressed { background-color: qlineargradient(spread:pad, x1:0, y1:0, x2:0, y2:1, stop:0 #004695, stop:1 #004695);} QCheckBox { color: #000000; spacing: 2px;} QCheckBox::indicator { width: 20px; height: 20px;} QRadioButton { color: #000000; spacing: 2px;} QComboBox { border-radius: 5px;} QSpinBox { border-radius: 5px;}style.css文件内容解释，有点css基础的应该很容易看懂。最前面的一系列是统一设置控件的样式。
QLabel#image1{ } QLabel#text1{ color: #004695; font: 75 18pt "微软雅黑";}这里的#后面跟的内容，就是你界面里指定的控件对象名称，如image1,text1等。
.QPushButton#btnShutDown:pressed { background-color: qlineargradient(spread:pad, x1:0, y1:0, x2:0, y2:1, stop:0 #004695, stop:1 #004695);}以上的:pressed设置按钮按下时的样式，hover是鼠标悬停上面的样式。
设置按钮的背景图片，关键属性：
background-position ----- 设置图标的位置
text-align-------------设置文本的位置
background-origin-------------相对于内容框来定位背景图像
如何使用
在mainWindow窗口实例化的地方，全局加载即可。
//设置指定样式 static void setStyle(const QString &qssFile) { QFile file(qssFile); if (file.open(QFile::ReadOnly)) { QString qss = QLatin1String(file.readAll()); qApp->setStyleSheet(qss); QString PaletteColor = qss.mid(20, 7); qApp->setPalette(QPalette(QColor(PaletteColor))); file.close(); } }MainWindow::MainWindow(QWidget *parent) : QWidget(parent), ui(new Ui::MainWindow) { ui->setupUi(this); setFixedSize(1280, 1024); //setWindowFlags(Qt::Window | Qt::FramelessWindowHint); myHelper::setStyle(":/qss/style.css");}整理了一个全局的辅助类，方便使用。
#ifndef MYHELPER_H#define MYHELPER_H #include <QtCore>#include <QtGui> #if (QT_VERSION > QT_VERSION_CHECK(5, 0, 0)) #include <QtWidgets> #endif class myHelper : public QObject { public: static void autoRunWithSystem(bool ifAutoRun, QString appName, QString appPath) { QSettings *reg = new QSettings( "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Run", QSettings::NativeFormat); if (ifAutoRun) { reg->setValue(appName, appPath); } else { reg->setValue(appName, ""); } } //设置编码为UTF8 static void setTextCode(const QString sForName = "UTF-8") {#if (QT_VERSION <= QT_VERSION_CHECK(5, 0, 0)) QTextCodec *codec = QTextCodec::codecForName(sForName); QTextCodec::setCodecForLocale(codec); QTextCodec::setCodecForCStrings(codec); QTextCodec::setCodecForTr(codec);#endif } //设置指定样式 static void setStyle(const QString &qssFile) { QFile file(qssFile); if (file.open(QFile::ReadOnly)) { QString qss = QLatin1String(file.readAll()); qApp->setStyleSheet(qss); QString PaletteColor = qss.mid(20, 7); qApp->setPalette(QPalette(QColor(PaletteColor))); file.close(); } } //加载中文字符 static void setChinese() { QTranslator *translator = new QTranslator(qApp); translator->load(":/image/qt_zh_CN.qm"); qApp->installTranslator(translator); } //判断是否是IP地址 static bool isIP(const QString sIP) { QRegExp RegExp("((2[0-4]\\d|25[0-5]|[01]?\\d\\d?)\\.){3}(2[0-4]\\d|25[0-5]|[01]?\\d\\d?)"); return RegExp.exactMatch(sIP); } //延时 static void sleep(int sec) { QTime dieTime = QTime::currentTime().addMSecs(sec); while (QTime::currentTime() < dieTime) { QCoreApplication::processEvents(QEventLoop::AllEvents, 100); } } //延时 static int sleep1(int command, int sec, int *state) { int ret = 0; QTime dieTime = QTime::currentTime().addMSecs(sec); while (QTime::currentTime() < dieTime) { if (((0xC7 != command && 0xC1 != command) && (*state == 2)) || ((0xC7 == command || 0xC1 == command) && (*state == 3))) { return 1; } QCoreApplication::processEvents(QEventLoop::AllEvents, 100); } ret = 2; return ret; } //窗体居中显示 static void moveFormToCenter(QWidget *frm) { int frmX = frm->width(); int frmY = frm->height(); QDesktopWidget dwt; int deskWidth = dwt.availableGeometry().width(); int deskHeight = dwt.availableGeometry().height(); QPoint movePoint(deskWidth / 2 - frmX / 2, deskHeight / 2 - frmY / 2); frm->move(movePoint); }}; #endif // MYHELPER_HCMakeLists文件
由于习惯了使用cmake，以下附上cmake的QT工程配置，CMakeList.txt文件。
cmake_minimum_required(VERSION 3.21)project(myapp) set(CMAKE_PREFIX_PATH "D:/Qt/Qtxx/xx.xx/msvc20xx/lib/cmake") add_definitions( -D_ENABLE_LOGGING) ##设置输出目录set(BUILD_DIRECTORY "")set(BUILD_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/../build)#################### QT dependencies ########################set(CMAKE_CXX_STANDARD 11)set(CMAKE_AUTOMOC ON)set(CMAKE_AUTORCC ON)set(CMAKE_AUTOUIC ON) set(QT_VERSION 5)set(REQUIRED_LIBS Core Gui Network Widgets)set(REQUIRED_LIBS_QUALIFIED Qt5::Core Qt5::Gui Qt5::Network Qt5::Widgets) #################### set output directory ####################set(BUILD_DIR ${BUILD_DIRECTORY})set(LIB_DIR ${BUILD_DIR}/lib/Release)set(LIB_FIX)if (CMAKE_BUILD_TYPE MATCHES "Debug") set(LIB_DIR ${BUILD_DIR}/lib/Debug) set(LIB_FIX _d)endif () get_filename_component(ABSOLUTE_PATH ${LIB_DIR} ABSOLUTE)set(LIB_DIR ${ABSOLUTE_PATH}) set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${LIB_DIR})set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${LIB_DIR})set(CMAKE_PDB_OUTPUT_DIRECTORY ${LIB_DIR})set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${LIB_DIR}) set(LIB_DIR_FIX ${LIB_DIR})option(USE_VS_BUILD "use visual studio build." OFF)if (USE_VS_BUILD) set(LIB_DIR_FIX ${LIB_DIR}/bin/Debug)endif ()#################### set include path ####################include_directories( ${CMAKE_CURRENT_SOURCE_DIR}/source/cpp/logger ${CMAKE_CURRENT_SOURCE_DIR}/source/cpp/misc ${CMAKE_CURRENT_SOURCE_DIR}/source/cpp ${BUILD_DIR}/include) #################### scan source files ####################aux_source_directory(${CMAKE_CURRENT_SOURCE_DIR}/source/cpp/logger SRC_FILES)aux_source_directory(${CMAKE_CURRENT_SOURCE_DIR}/source/cpp/misc SRC_FILES)aux_source_directory(${CMAKE_CURRENT_SOURCE_DIR}/source/cpp SRC_FILES) #####设置资源文件set(RESOURCE_SOURCES image.qrc )#################### version config ####################if (MSVC) set(MY_VERSIONINFO_RC "${CMAKE_CURRENT_BINARY_DIR}/VersionInfo.rc") configure_file("${CMAKE_CURRENT_SOURCE_DIR}/resource.rc.in" "${MY_VERSIONINFO_RC}")endif () set(MY_VERSIONINFO_RC "") add_executable(${PROJECT_NAME} main.cpp mainwindow.cpp mainwindow.h mainwindow.ui ${SRC_FILES} ${RESOURCE_SOURCES} ${MY_VERSIONINFO_RC}) #################### set target properties ####################set_target_properties(${PROJECT_NAME} PROPERTIES DEBUG_POSTFIX _d) set_property(TARGET ${PROJECT_NAME} PROPERTY WIN32_EXECUTABLE true) #################### set target dependencies ####################find_package(Qt${QT_VERSION} COMPONENTS ${REQUIRED_LIBS} REQUIRED) ###############vcpkg的三方库######################################find_package(g3log CONFIG REQUIRED) ###############三方静态库#########################################set(REDIS_CLIENT_LIB ${LIB_DIR_FIX}/redisclient${LIB_FIX}.lib) set(THIRD_LIBS g3log ${REDIS_CLIENT_LIB} ) target_link_libraries(${PROJECT_NAME} PRIVATE ${REQUIRED_LIBS_QUALIFIED} ${THIRD_LIBS})“Qt界面美化之怎么自定义qss样式表”的内容就介绍到这里了，感谢大家的阅读。如果想了解更多行业相关的知识可以关注编程网网站，小编将为大家输出更多高质量的实用文章！
