PyQT5 输入对话框

原文： https://pythonspot.com/pyqt5-input-dialog/

PyQt5 支持多个输入对话框，使用它们可以导入QInputDialog。

from PyQt5.QtWidgets import QApplication, QWidget, QInputDialog, QLineEdit

PyQt5 输入对话框概述：

获取整数

使用QInputDialog.getInt()获取整数：

def getInteger(self):
    i, okPressed = QInputDialog.getInt(self, "Get integer","Percentage:", 28, 0, 100, 1)
    if okPressed:
        print(i)

参数顺序如下：自身，窗口标题，标签（在输入框之前），默认值，最小，最大和步长。

获得浮点

通过QInputDialog.getDouble()获得双倍：

def getDouble(self):
    d, okPressed = QInputDialog.getDouble(self, "Get double","Value:", 10.05, 0, 100, 10)
    if okPressed:
        print(d)

最后一个参数（10）是逗号后面的小数位数。

获取/选择项目

从下拉框中获取一个项目：

def getChoice(self):
    items = ("Red","Blue","Green")
    item, okPressed = QInputDialog.getItem(self, "Get item","Color:", items, 0, False)
    if okPressed and item:
        print(item)

获取字符串

使用QInputDialog.getText()获取字符串

def getText(self):
    text, okPressed = QInputDialog.getText(self, "Get text","Your name:", QLineEdit.Normal, "")
    if okPressed and text != '':
        print(text)

所有 PyQt5 输入对话框的示例

下面的完整示例：

import sys
from PyQt5.QtWidgets import QApplication, QWidget, QInputDialog, QLineEdit
from PyQt5.QtGui import QIcon
class App(QWidget):
    def __init__(self):
        super().__init__()
        self.title = 'PyQt5 input dialogs - pythonspot.com'
        self.left = 10
        self.top = 10
        self.width = 640
        self.height = 480
        self.initUI()
    def initUI(self):
        self.setWindowTitle(self.title)
        self.setGeometry(self.left, self.top, self.width, self.height)
        self.getInteger()
        self.getText()
        self.getDouble()
        self.getChoice()
        self.show()
    def getInteger(self):
        i, okPressed = QInputDialog.getInt(self, "Get integer","Percentage:", 28, 0, 100, 1)
        if okPressed:
            print(i)
    def getDouble(self):
        d, okPressed = QInputDialog.getDouble(self, "Get double","Value:", 10.50, 0, 100, 10)
        if okPressed:
            print( d)
    def getChoice(self):
        items = ("Red","Blue","Green")
        item, okPressed = QInputDialog.getItem(self, "Get item","Color:", items, 0, False)
        if ok and item:
            print(item)
    def getText(self):
        text, okPressed = QInputDialog.getText(self, "Get text","Your name:", QLineEdit.Normal, "")
        if okPressed and text != '':
            print(text)
if __name__ == '__main__':
    app = QApplication(sys.argv)
    ex = App()
    sys.exit(app.exec_())

下载 PyQT5 示例