Question

我的目标是一个GUI窗口，提示用户输入特定内容。我需要用户打开公司徽标.jpg，测试设置图片和2 .csv数据文件。然后我希望他们输入报告的名称和一些测试设置。

我最初的成功生成了一个弹出窗口，其中包含每个项目的按钮。由于我对每个按钮有不同的要求，我决定回去分别做每个信号/插槽组合。我希望能够导入图片和数据并将其分配给变量名称。不幸的是，在这个当前配置中，我得到的最接近的是它会弹出一个窗口，用户需要选择一个文件，然后它会显示另一个窗口，其中包含按钮......这不起作用。

import sys
from PyQt4 import QtGui, QtCore
from PyQt4.QtGui import * #yes, I know I did this above. 
from PyQt4.QtCore import * #However, when I only do the first one, I get errors. Same with the second way.

class CompiledWindow(QtGui.QWidget):
    def __init__(self, parent = None):
        QtGui.QWidget.__init__(self, parent)

        def logo_pic(self):
            global Logo_picture            
            Logo_picture = unicode( QFileDialog.getOpenFileName() )

        self.setWindowTitle('Reasonably named window')
        names = ['Open Logo Picture', 'Open Setup Picture', 'Open first data file', 'Open second data file', 'Enter text about settings', 'Enter other text about settings', 'Enter third setting', 'Enter fourth setting'] 
#this should give you an idea of how many items I need buttons for. I need to open 4 files and have the user enter several bits of text. 
        grid = QtGui.QGridLayout()
        Logo_button = QtGui.QPushButton(names[0])
        self.connect(Logo_button, QtCore.SIGNAL('clicked()'), QtCore.SLOT(logo_pic(self)))        
        grid.addWidget(Logo_button, 0, 0)        
        self.setLayout(grid)       

app = QtGui.QApplication(sys.argv)
cw = CompiledWindow()
cw.show()
sys.exit(app.exec_())

这是有效的修复： - 将def logo_pic移出 init - 将插槽/信号更改为 Logo_button = QtGui.QPushButton（名称[0]） Logo_button.clicked.connect（self.logo_pic）

Answer 1

示例代码存在一些问题，这些问题已在下面的重写版本中得到修复。希望这有助于让你开始朝着正确的方向前进。

import sys
from PyQt4 import QtGui, QtCore

class CompiledWindow(QtGui.QWidget):
    def __init__(self, parent = None):
        QtGui.QWidget.__init__(self, parent)
        self.setWindowTitle('Reasonably named window')
        names = ['Open Logo Picture', 'Open Setup Picture', 'Open first data file', 'Open second data file', 'Enter text about settings', 'Enter other text about settings', 'Enter third setting', 'Enter fourth setting']
        grid = QtGui.QGridLayout(self)
        self.Logo_button = QtGui.QPushButton(names[0], self)
        self.Logo_button.clicked.connect(self.logo_pic)
        grid.addWidget(self.Logo_button, 0, 0)

    def logo_pic(self):
        self.Logo_picture = unicode(QtGui.QFileDialog.getOpenFileName())
        print(self.Logo_picture)

app = QtGui.QApplication(sys.argv)
cw = CompiledWindow()
cw.show()
sys.exit(app.exec_())

PyQt4 - 信号和插槽。无法将按钮连接到方法

1 个答案: