QPixmap bufferPixmap(size()); bufferPixmap.fill(Qt::transparent); if(_openflag == 0)//不是打开图片的，每一次新建一个空白的画布 { _pixmap = QPixmap(size());//新建pixmap _pixmap.fill(Qt::white);//背景色填充为白色 } QPixmap pix = _pixmap;//以_pixmap作为画布 QPainter p(&pix);//将_pixmap作为画布 QPainter p1(&bufferPixmap); unsigned int i1=0,i2=0,i3=0,i4=0;//各种图形的索引 unsigned int i5=0,i6=0,i7=0,i8=0;//各种图形的索引 Q_UNUSED(event); QPen pen; pen.setColor(color); p.setPen(pen); for(int c = 0;c<_shape.size();++c)//控制用户当前所绘图形总数 { if(_shape.at(c) == 1)//线条 { const QVector<QPoint>& line = _lines.at(i1++);//取出一条线条 for(int j=0; j<line.size()-1; ++j)//将线条的所有线段描绘出 { p.drawLine(line.at(j), line.at(j+1)); } } else if(_shape.at(c) == 2)//矩形 { p.drawRect(_rects.at(i2++)); } else if(_shape.at(c) == 3)//椭圆 { p.drawEllipse(_ellipse.at(i3++)); } else if(_shape.at(c) == 4)//直线 { p.drawLine(_line.at(i4).topLeft(),_line.at(i4).bottomRight()); i4++; } } if(drawFinished) { for(int c = 0;c<_shape.size();++c)//控制用户当前所绘图形总数 { if(_shape.at(c) == 1)//线条 { const QVector<QPoint>& line = _lines.at(i5++);//取出一条线条 for(int j=0; j<line.size()-1; ++j)//将线条的所有线段描绘出 { p1.drawLine(line.at(j), line.at(j+1)); } } else if(_shape.at(c) == 2)//矩形 { p1.drawRect(_rects.at(i6++)); } else if(_shape.at(c) == 3)//椭圆 { p1.drawEllipse(_ellipse.at(i7++)); } else if(_shape.at(c) == 4)//直线 { p1.drawLine(_line.at(i4).topLeft(),_line.at(i4).bottomRight()); i8++; } } p1.end(); } p.end();//结束对pix的绘制 p.begin(this); // 将当前窗体作为画布，开始对当前窗体进行绘制 p.drawPixmap(0, 0, bufferPixmap); p.drawPixmap(0, 0, pix);

rg.rar_QT calculator_qt计算器_rg.rar

QT Calculator是一款基于Qt框架开发的计算器应用，它提供了一个用户友好的图形界面，用于执行基本的数学运算。Qt是一个跨平台的应用程序开发框架，由The Qt Company开发并维护，广泛应用于Windows、Linux、macOS等多...

image_qt.zip_QT opencv_QT 视频_QT+opencv_Qt图像_qt 视频

处理完成后，结果图像可以通过QT的QImage或QPixmap转换回QT格式，再显示在GUI界面上。此外，考虑到"qt_视频"和"qt__视频"标签，这个示例可能还会涉及到视频的录制功能。QT的QMediaRecorder类可以用来录制摄像头的...

import os from PyQt5.QtCore import Qt from PyQt5.QtGui import QPixmap, QIcon from PyQt5.QtWidgets import QApplication, QWidget, QLabel, QVBoxLayout, QHBoxLayout, QTreeView, QFileSystemModel class ImageViewer(QWidget): def init(self, folder_path): super().init() self.folder_path = folder_path self.image_dict = {} self.current_image = None self.setWindowTitle("Image Viewer") self.setFixedSize(1000, 600) self.image_label = QLabel(self) self.image_label.setAlignment(Qt.AlignCenter) self.tree_view = QTreeView() self.tree_view.setMinimumWidth(250) self.tree_view.setMaximumWidth(250) self.model = QFileSystemModel() self.model.setRootPath(folder_path) self.tree_view.setModel(self.model) self.tree_view.setRootIndex(self.model.index(folder_path)) self.tree_view.setHeaderHidden(True) self.tree_view.setColumnHidden(1, True) self.tree_view.setColumnHidden(2, True) self.tree_view.setColumnHidden(3, True) self.tree_view.doubleClicked.connect(self.tree_item_double_clicked) self.main_layout = QHBoxLayout(self) self.main_layout.addWidget(self.tree_view) self.main_layout.addWidget(self.image_label) self.load_images() self.update_image() def load_images(self): for file_name in os.listdir(self.folder_path): if file_name.lower().endswith((".jpg", ".jpeg", ".png", ".gif", ".bmp")): file_path = os.path.join(self.folder_path, file_name) self.image_dict[file_name] = file_path current_image = list(self.image_dict.keys())[0] def update_image(self): if self.current_image is not None: pixmap = QPixmap(self.image_dict[self.current_image]) self.image_label.setPixmap(pixmap.scaled(self.width() - self.tree_view.width(), self.height(), Qt.KeepAspectRatio, Qt.SmoothTransformation)) def tree_item_double_clicked(self, index): file_name = self.model.fileName(index) if file_name in self.image_dict: self.current_image = file_name self.update_image() def keyPressEvent(self, event): if event.key() == Qt.Key_A: self.previous_image() elif event.key() == Qt.Key_D: self.next_image() elif event.key() in [Qt.Key_1, Qt.Key_2, Qt.Key_3, Qt.Key_4, Qt.Key_5]: self.save_text_file(event.key() - Qt.Key_0) def previous_image(self): if self.current_image is not None: file_names = list(self.image_dict.keys()) current_index = file_names.index(self.current_image) if current_index > 0: self.current_image = file_names[current_index - 1] else: self.current_image = file_names[-1] self.update_image() def next_image(self): if self.current_image is not None: file_names = list(self.image_dict.keys()) current_index = file_names.index(self.current_image) if current_index < len(file_names) - 1: self.current_image = file_names[current_index + 1] else: self.current_image = file_names[0] self.update_image() def save_text_file(self, number): if self.current_image is not None: file_name = self.current_image txt_file_path = os.path.join(self.folder_path, os.path.splitext(file_name)[0] + ".txt") with open(txt_file_path, "w") as file: file.write(str(number)) if name == "main": import sys app = QApplication(sys.argv) viewer = ImageViewer("D:/图片/wallpaper") viewer.show() sys.exit(app.exec_())这份代码实现不了使用键盘的A键向上翻页以及D键向下翻页，也实现不了键盘数字键生成相应txt文档，帮我分析一下错在哪里

if current_index > 0: self.current_image = file_names[current_index - 1] else: self.current_image = file_names[-1] self.update_image() def next_image(self): if self.current_image is not ...

解读一下下面这个python代码中各个函数的作用：import ui_test from PyQt5.QtWidgets import * import cv2 from PyQt5 import QtCore, QtGui, QtWidgets class test_ui(QMainWindow, ui_test.Ui_MainWindow): def init(self): super().init() self.setupUi(self) self.timer = QtCore.QTimer() self.timer.timeout.connect(self.show_viedo) self.pushButton.clicked.connect(self.video_button) self.cap_video=0 self.flag = 0 self.img = [] def video_button(self): if (self.flag == 0): self.cap_video = cv2.VideoCapture(0) self.timer.start(50); self.flag+=1 self.pushButton.setText("Close") else: self.timer.stop() self.cap_video.release() self.label.clear() self.pushButton.setText("Open") self.flag=0 def show_viedo(self): ret, self.img = self.cap_video.read() if ret: self.show_cv_img(self.img) def show_cv_img(self, img): shrink = cv2.cvtColor(img, cv2.COLOR_BGR2RGB) QtImg = QtGui.QImage(shrink.data, shrink.shape[1], shrink.shape[0], shrink.shape[1] * 3, QtGui.QImage.Format_RGB888) jpg_out = QtGui.QPixmap(QtImg).scaled( self.label.width(), self.label.height()) self.label.setPixmap(jpg_out) if name == "main": app = QApplication(sys.argv) win = test_ui() win.show() sys.exit(app.exec_())

- def video_button(self)：该函数是一个槽函数，用于响应 “Open” 按钮的点击事件，控制视频捕捉的开始和暂停。 - def show_viedo(self)：该函数是一个槽函数，用于定时读取摄像头捕捉的图像，并在界面上实时显示...

QStringList images; images.append(":/images/image1.jpg"); images.append(":/images/image2.jpg"); images.append(":/images/image3.jpg"); images.append(":/images/image4.jpg"); images.append(":/images/image5.jpg"); images.append(":/images/image6.jpg"); images.append(":/images/image7.jpg"); images.append(":/images/image8.jpg"); images.append(":/images/image9.jpg"); images.append(":/images/image10.jpg"); //保存图片列表到成员变量中 this->images = images; //设置初始显示图片 this->current_image_index = 0; this->ui->image_label->setPixmap(QPixmap(this->images.at(this->current_image_index))); 然后添加以下槽函数实现图片切换：复制void Widget::on_previous_btn_clicked() { //切换到上一张图片 this->current_image_index--; if (this->current_image_index < 0) { this->current_image_index = this->images.size() - 1; } this->ui->image_label->setPixmap(QPixmap(this->images.at(this->current_image_index))); } void Widget::on_next_btn_clicked() { //切换到下一张图片 this->current_image_index++; if (this->current_image_index >= this->images.size()) { this->current_image_index = 0; } this->ui->image_label->setPixmap(QPixmap(this->images.at(this->current_image_index))); } 最后在.ui文件中添加两个按钮，命名为previous_btn和next_btn，并将它们分别与on_previous_btn_clicked()和on_next_btn_clicked()槽函数关联即可。补全头文件

#include <QPixmap> namespace Ui { class Widget; } class Widget : public QWidget { Q_OBJECT public: explicit Widget(QWidget *parent = nullptr); ~Widget(); private slots: void on_previous_btn_...

修改以下代码使其能够输出模型预测结果： def open_image(self): file_dialog = QFileDialog() file_paths, _ = file_dialog.getOpenFileNames(self, "选择图片", "", "Image Files (.png .jpg .jpeg)") if file_paths: self.display_images(file_paths) def preprocess_images(self, image_paths): data_transform = transforms.Compose([ transforms.CenterCrop(150), transforms.ToTensor(), transforms.Normalize([0.485, 0.456, 0.406], [0.229, 0.224, 0.225]) ]) self.current_image_paths = [] images = [] for image_path in image_paths: image = Image.open(image_path) image = data_transform(image) image = torch.unsqueeze(image, dim=0) images.append(image) self.current_image_paths.append(image_path) return images def predict_images(self): if not self.current_image_paths: return for i, image_path in enumerate(self.current_image_paths): image = self.preprocess_image(image_path) output = self.model(image) predicted_class = self.class_dict[output.argmax().item()] self.result_labels[i].setText(f"Predicted Class: {predicted_class}") self.progress_bar.setValue((i+1)20) def display_images(self, image_paths): for i, image_path in enumerate(image_paths): image = QImage(image_path) image = image.scaled(300, 300, Qt.KeepAspectRatio) if i == 0: self.image_label_1.setPixmap(QPixmap.fromImage(image)) elif i == 1: self.image_label_2.setPixmap(QPixmap.fromImage(image)) elif i == 2: self.image_label_3.setPixmap(QPixmap.fromImage(image)) elif i == 3: self.image_label_4.setPixmap(QPixmap.fromImage(image)) elif i == 4: self.image_label_5.setPixmap(QPixmap.fromImage(image))

if i == 0: self.image_label_1.setPixmap(QPixmap.fromImage(image)) elif i == 1: self.image_label_2.setPixmap(QPixmap.fromImage(image)) elif i == 2: self.image_label_3.setPixmap(QPixmap.fromImage...

QPixmap DiagramItem::image() const { QPixmap pixmap(250, 250); pixmap.fill(Qt::transparent); QPainter painter(&pixmap); painter.setPen(QPen(Qt::black, 8)); painter.translate(125, 125); painter.drawPolyline(myPolygon); return pixmap; }

这段代码是用来实现将 QGraphicsScene 中的图形项 (DiagramItem) 转换成 QPixmap 格式的图像的功能。具体实现步骤如下： 1. 首先创建一个大小为 (250, 250) 的 QPixmap 对象，并用透明色进行填充。 2. 然后创建一个...

E:\bird\bird\bird\bird.cpp:43: error: no match for 'operator==' (operand types are 'QPixmap' and 'QPixmap') if (m_currentImage == QPixmap(":/rec/bird1.png")) { ^

相反，你可以使用QPixmap::isNull()函数来检查QPixmap对象是否为空，或者使用QPixmap::operator!=()运算符来比较两个QPixmap对象是否不同。请修改你的代码如下： cpp void Bird::animate() { // 切换...

E:\bird\bird\bird\bird.cpp:45: error: no match for 'operator==' (operand types are 'QPixmap' and 'QPixmap') } else if (m_currentImage == QPixmap(":/rec/bird1.png")) { ^

在C++中，QPixmap类没有重载==运算符，因此不能直接使用==来比较两个QPixmap对象。你可以使用QPixmap::operator==()来比较两个QPixmap对象是否相同。请修改你的代码如下： cpp void Bird::animate()...

class CustomScrollArea : public QScrollArea{public: CustomScrollArea(QWidget parent = nullptr);protected: void mousePressEvent(QMouseEvent event) override; void mouseMoveEvent(QMouseEvent event) override; void paintEvent(QPaintEvent event) override;private: QPoint m_lastPos; // 上一次鼠标移动的位置 QPixmap m_pixmap; // 绘制的图片 int m_offset; // 图片偏移量};CustomScrollArea::CustomScrollArea(QWidget parent) : QScrollArea(parent) , m_offset(0){ // 设置水平滚动条不可见 setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff); // 设置垂直滚动条不可见 setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff); // 设置背景色为白色 setStyleSheet("background-color:white;");}void CustomScrollArea::mousePressEvent(QMouseEvent event){ if (event->button() == Qt::LeftButton) { m_lastPos = event->pos(); }}void CustomScrollArea::mouseMoveEvent(QMouseEvent event){ if (event->buttons() & Qt::LeftButton) { int dx = event->pos().x() - m_lastPos.x(); m_offset += dx; m_lastPos = event->pos(); // 如果偏移量超过了图片的宽度，则拼接到最开始的地方 if (m_offset >= m_pixmap.width()) { m_offset -= m_pixmap.width(); } else if (m_offset < 0) { m_offset += m_pixmap.width(); } update(); }}void CustomScrollArea::paintEvent(QPaintEvent event){ QPainter painter(viewport()); painter.setRenderHint(QPainter::Antialiasing); painter.setRenderHint(QPainter::SmoothPixmapTransform); // 绘制背景 painter.fillRect(viewport()->rect(), Qt::white); // 绘制图片 painter.drawPixmap(m_offset, 0, m_pixmap); if (m_offset > 0) { painter.drawPixmap(m_offset - m_pixmap.width(), 0, m_pixmap); } if (m_offset + m_pixmap.width() < viewport()->width()) { painter.drawPixmap(m_offset + m_pixmap.width(), 0, m_pixmap); }} m_pixmap好像没有定义

CustomScrollArea::CustomScrollArea(QWidget *parent) : QScrollArea(parent), m_offset(0) { // 设置水平滚动条不可见 setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff); // 设置垂直滚动条不可见 ...

m_background.load("F:/03_project/opencv_and_Qt/cs/AVI_Vision/rcc/222.jpg"); setAutoFillBackground(true); setPalette(QPalette(m_background));报错mainwindow.cpp:24: error: No matching conversion for functional-style cast from 'QPixmap' to 'QPalette'

这个错误是因为在将 QPixmap 类型的 m_background 转换为 QPalette 类型时发生了类型不匹配的错误。你可以尝试使用 QPalette::Background 属性来设置背景，例如： QPalette palette; palette.setBrush(QPalette::...

void MyPaint::paintEvent(QPaintEvent *event) { if(_openflag == 0)//不是打开图片的，每一次新建一个空白的画布 { _pixmap = QPixmap(size());//新建pixmap _pixmap.fill(Qt::white);//背景色填充为白色 } QPixmap pix = _pixmap;//以_pixmap作为画布 QPainter p(&pix);//将_pixmap作为画布 unsigned int i1=0,i2=0,i3=0,i4=0,k=0;//各种图形的索引 Q_UNUSED(event); QPen pen; pen.setColor(color); for(int c = 0;c<_shape.size();++c)//控制用户当前所绘图形总数 { if(_shape.at(c) == 1)//线条 { const QVector<QPoint>& line = _lines.at(i1++);//取出一条线条 for(int j=0; j<line.size()-1; ++j)//将线条的所有线段描绘出 { p.drawLine(line.at(j), line.at(j+1)); } } else if(_shape.at(c) == 2)//矩形 { p.drawRect(_rects.at(i2++)); } else if(_shape.at(c) == 3)//椭圆 { p.drawEllipse(_ellipse.at(i3++)); } else if(_shape.at(c) == 4)//直线 { p.drawLine(_line.at(i4).topLeft(),_line.at(i4).bottomRight()); i4++; } } p.end(); p.begin(this); // 将当前窗体作为画布 p.drawPixmap(0, 0, pix); // 绘制之前的 pixmap }使用双缓冲技术实现在绘制新的图形时只更新变化的部分而不重新绘制整个画布

然后，您在最后使用 p.drawPixmap(0, 0, pix) 将 _pixmap 的内容绘制到窗口上，实现了只更新变化的部分而不重新绘制整个画布。请注意，在每次 paintEvent 被调用时，都会重新绘制整个窗口的内容。通过使用双...

import cv2 import sys import os import time from PyQt5 import QtGui #重新导入 from PyQt5 import QtCore #重新导入 from showPic import Ui_MainWindow from PyQt5.QtCore import * from PyQt5.QtGui import * #导入的外面 from PyQt5.QtWidgets import * camera_path = 0 # 0：自带摄像头 1：外接摄像头 "xxx.mp4" "rtsp://admin:pwd@192.168.2.10/cam/..." capture = cv2.VideoCapture(camera_path) # 初始化播放器流媒体 fourcc = cv2.VideoWriter_fourcc('M', 'P', '4', 'V') # XVID/DIVX MPEG MJPG X264 video_writer = cv2.VideoWriter("image/myself.mp4", fourcc, 25, (960, 540)) # 存放路径、、帧率fps、尺寸（且保证下面的frame也是这个尺寸） class videoShow(QMainWindow, Ui_MainWindow): def init(self): super().init() self.setupUi(self) self.dir_path = r"E:\pycharm\new_subject\image/" self.pushButton_play.clicked.connect(self.play_video) self.pushButton_pause.clicked.connect(self.pause_video) def play_video(self): self.playing = True def pause_video(self): self.playing = False def timer_pic(self): image_name = self.dir_path + self.file_list[self.n] url = image_name pic_image = cv2.imread(url) pic_image = cv2.cvtColor(pic_image, cv2.COLOR_BGR2RGB) # 将BGR格式图像转换成RGB height, width = pic_image.shape[:2] pixMap = QImage(pic_image.data, width, height, width*3, QImage.Format_RGB888) # 将RGB格式图像转换为八位图 pixMap = QPixmap.fromImage(pixMap) ratio = max(width/self.label.width(), height/self.label.height()) pixMap.setDevicePixelRatio(ratio) # 根据图片比例显示 self.label.setAlignment(Qt.AlignCenter) # 设置居中 self.label.setPixmap(pixMap) if self.playing: flag, frame = capture.read() if flag is False: return frame = cv2.resize(frame, (960, 540)) video_writer.write(frame) cv2.namedWindow("video", 0) cv2.imshow("video", frame) key = cv2.waitKey(25) if key == 27: video_writer.release() cv2.destroyAllWindows() sys.exit(0) if name == 'main': app = QApplication(sys.argv) ui = videoShow() ui.show() sys.exit(app.exec_()) 优化这段代码，实现录制视频以及点击按钮实现录制、播放、暂停

camera_path = 0 # 0：自带摄像头 1：外接摄像头 "xxx.mp4" "rtsp://admin:pwd@192.168.2.10/cam/..." capture = cv2.VideoCapture(camera_path) # 初始化播放器流媒体 fourcc = cv2.VideoWriter_fourcc('M', 'P', ...

如何实现addpaths和nextImage、previousImage方法#include "viewer.h" Viewer::Viewer(QWidget *parent):QLabel{parent} {} //打开 void Viewer::openFile(QString fileName) { m_image.load(fileName); m_pixmap = QPixmap::fromImage(m_image.scaled(size(),Qt::KeepAspectRatio)); setPixmap(m_pixmap); setScaledContents(true); } void Viewer::addPaths(const QStringList &paths) { } //void Viewer::displayImage() //{ // m_image.load("../images/01.jpg"); //这里硬编码了要显示图片的路径， //后续开发时需要将load的实参修改为保存了路径的程序对象。 // m_pixmap = QPixmap::fromImage(m_image.scaled(size(),Qt::KeepAspectRatio)); // setPixmap(m_pixmap); // setScaledContents(true); //} //下一张 void Viewer::nextImage() { if (m_paths.isEmpty()) { // 如果图片路径列表为空，则直接返回 return; } m_currentIndex = (m_currentIndex + 1) % m_paths.size(); // 计算下一张图片的索引 m_image.load(m_paths[m_currentIndex]); // 加载对应的图片 m_pixmap = QPixmap::fromImage(m_image.scaled(size(),Qt::KeepAspectRatio)); // 将图片转换为QPixmap对象并缩放 setPixmap(m_pixmap); // 设置QLabel的显示内容为该QPixmap对象 } //上一张 void Viewer::previousImage() { }

m_pixmap = QPixmap::fromImage(m_image.scaled(size(),Qt::KeepAspectRatio)); // 将图片转换为QPixmap对象并缩放 setPixmap(m_pixmap); // 设置QLabel的显示内容为该QPixmap对象 } 需要注意的是，计算上...

arguments did not match any overloaded call: scaled(self, width: int, height: int, aspectRatioMode: Qt.AspectRatioMode = Qt.IgnoreAspectRatio, transformMode: Qt.TransformationMode = Qt.FastTransformation): argument 3 has unexpected type 'int' scaled(self, size: QSize, aspectRatioMode: Qt.AspectRatioMode = Qt.IgnoreAspectRatio, transformMode: Qt.TransformationMode = Qt.FastTransformation): argument 1 has unexpected type 'int'

- scaled(size[, aspectRatioMode=Qt.IgnoreAspectRatio, transformMode=Qt.FastTransformation]) 其中，第一个重载形式中的 width 和 height 参数应该是整数类型，而第二个重载形式中的 size 参数应该是 ...

import sys from PyQt5.QtCore import * from PyQt5.QtGui import * from PyQt5.QtWidgets import * class MainWindow(QWidget): def init(self): super().init() self.setWindowTitle("Image Slider") self.setGeometry(100, 100, 640, 480) self.image_list = ["总图", "一队", "图片"] self.image_label = QLabel(self) self.image_label.setGeometry(100, 100, 640, 480) self.image_label.setPixmap(QPixmap(self.image_list[0])) self.timer = QTimer(self) self.timer.timeout.connect(self.update_image) self.timer.start(1000) def update_image(self): current_index = self.image_list.index(self.image_label.pixmap().fileName()) next_index = (current_index + 1) % len(self.image_list) self.image_label.setPixmap(QPixmap(self.image_list[next_index])) if name == "main": app = QApplication(sys.argv) window = MainWindow() window.show() sys.exit(app.exec_())以上代码有错误吗

代码有一个小错误，应该将图片的路径传递给QPixmap，而不是图片的名称。修改方式如下：将 self.image_list = ["总图", "一队", "图片"] 改为 self.image_list = ["path/to/总图.jpg", "path/to/一队.jpg", ...

class SerialThread(threading.Thread): def init(self, serial_port, parent=None): super().init(parent) self.serial_port = serial_port self.running = True def run(self): while self.running: if self.serial_port.in_waiting: # 判断是否有数据可读 data = self.serial_port.read_all() # 读取所有可读数据 hex_data = binascii.b2a_hex(data).decode() # 将数据转换为十六进制字符串 hex_list = hex_data.split(' ') # 按空格拆分字符串并保存到列表中 my_string = hex_list[0] statue = my_string[14:16] if statue == '02': self.label.setPixmap(QPixmap("usart/image/cyan.png")) print(statue) elif statue == '03': # self.curren_image = "usart/image/white.png" self.label.setPixmap(QPixmap("usart/image/white.png")) print(statue) elif statue == '05': self.label.setPixmap(QPixmap("usart/image/yellow.png")) print(statue) else: self.label.setPixmap(QPixmap("usart/image/nor.png")) print(statue)在本段代码中出现了以下错误：self.label.setPixmap(QPixmap("usart/image/nor.png")) AttributeError: 'SerialThread' object has no attribute 'label'

from PyQt5.QtWidgets import QLabel class SerialThread(threading.Thread): def __init__(self, serial_port, parent=None): super().__init__(parent) self.serial_port = serial_port self.running = True ...

if self.result_img_area.pixmap() is not None: # 获取QLabel中的图像 pixmap = self.result_img_area.pixmap() angle=90 # 新建一个QPixmap，并将旋转后的图像绘制到其中 rotated_pixmap = QPixmap(pixmap.size()) rotated_pixmap.fill(Qt.transparent) painter = QPainter(rotated_pixmap) painter.translate(pixmap.size().width() / 2, pixmap.size().height() / 2) painter.rotate(angle) painter.translate(-pixmap.size().width() / 2, -pixmap.size().height() / 2) painter.drawPixmap(0, 0, pixmap) painter.end() # 将旋转后的图像设置为QLabel中的图像 self.result_img_area.setPixmap(rotated_pixmap)详细解释代码

rotated_pixmap.fill(Qt.transparent) 接下来，通过 QPainter 对象 painter 对旋转后的图像进行绘制。首先，将画笔平移到图像中心： python painter.translate(pixmap.size().width() / 2, pixmap.size()....

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m_background.load("F:/03_project/opencv_and_Qt/cs/AVI_Vision/rcc/222.jpg"); setAutoFillBackground(true); setPalette(QPalette(m_background));报错mainwindow.cpp:24: error: No matching conversion for functional-style cast from 'QPixmap' to 'QPalette'

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