如何在PyQT GUI中显示图片？

Question

我希望在PyQT的GUI中使用文件选择器展示一张图片。到目前为止，我已经成功打开了图片文件，但是完全不知道如何在GUI中展示图片。

import sys
from PyQt4 import QtGui, QtCore


class Window(QtGui.QMainWindow):
    def __init__(self):
        super(Window, self).__init__()
        self.setGeometry(100, 100, 500, 300)
        self.setWindowTitle("PyQT Show Image")

        openFile = QtGui.QAction("&File", self)
        openFile.setShortcut("Ctrl+O")
        openFile.setStatusTip("Open File")
        openFile.triggered.connect(self.file_open)

        self.statusBar()

        mainMenu = self.menuBar()

        fileMenu = mainMenu.addMenu('&File')
        fileMenu.addAction(openFile)

       self.home()

    def home(self):
        self.show()

    def file_open(self):
        name = QtGui.QFileDialog.getOpenFileName(self, 'Open File')
        file = open(name, 'r')

def run():
    app = QtGui.QApplication(sys.argv)
    GUI = Window()
    sys.exit(app.exec_())

run()

请指导我如何在GUI中显示图像。谢谢。

- Changez Khan

Answer 1

这个怎么样？

import sys
from PyQt4 import QtGui, QtCore


class Window(QtGui.QMainWindow):
    def __init__(self):
        super(Window, self).__init__()
        self.setGeometry(100, 100, 500, 300)
        self.setWindowTitle("PyQT Show Image")

        openFile = QtGui.QAction("&File", self)
        openFile.setShortcut("Ctrl+O")
        openFile.setStatusTip("Open File")
        openFile.triggered.connect(self.file_open)

        self.statusBar()

        mainMenu = self.menuBar()

        fileMenu = mainMenu.addMenu('&File')
        fileMenu.addAction(openFile)

        self.lbl = QtGui.QLabel(self)
        self.setCentralWidget(self.lbl)

        self.home()

    def home(self):
        self.show()

    def file_open(self):
        name = QtGui.QFileDialog.getOpenFileName(self, 'Open File')

        pixmap = QtGui.QPixmap(name)
        self.lbl.setPixmap(pixmap.scaled(self.lbl.size()))


def run():
    app = QtGui.QApplication(sys.argv)
    GUI = Window()
    sys.exit(app.exec_())

run()

- Controlix

Answer 2

我已按照pyQt5的要求更新了代码，这对某些人可能会有帮助。（参考：上面发布的Controlix代码）

import sys
from PyQt5 import QtGui, QtCore
from PyQt5.QtWidgets import QFileDialog,QLabel,QAction,QMainWindow,QApplication

class Window(QMainWindow):
    def __init__(self):
        super(Window, self).__init__()
        self.setGeometry(100, 100, 500, 300)
        self.setWindowTitle("PyQT Show Image")

        openFile = QAction("&File", self)
        openFile.setShortcut("Ctrl+O")
        openFile.setStatusTip("Open File")
        openFile.triggered.connect(self.file_open)

        self.statusBar()

        mainMenu = self.menuBar()

        fileMenu = mainMenu.addMenu('&File')
        fileMenu.addAction(openFile)

        self.lbl = QLabel(self)
        self.setCentralWidget(self.lbl)

        self.home()

    def home(self):
        self.show()

    def file_open(self):
        name = QFileDialog.getOpenFileName(self, 'Open File')
        print(name)
        pixmap = QtGui.QPixmap(name[0])
        self.lbl.setPixmap(pixmap.scaled(self.lbl.size()))


def run():
    app = QApplication(sys.argv)
    GUI = Window()
    sys.exit(app.exec_())

run()

- Ajith