最后一种对话框是QInputDialog，，用来提供个输入的窗口。
一常用的静态方法
由于输入的类型不同，QInputDialog分为多种静态方法使用
#有步长调节器的整形数据，step为步长调节器的增量设定 QInputDialog.getInt(parent: QWidget, title: str, label: str, value: int = ..., min: int = ..., max: int = ..., step: int = ..., flags: typing.Union[QtCore.Qt.WindowFlags, QtCore.Qt.WindowType] = ...) #有步长调节器的浮点形数据,decimals为小数位数 QInputDialog.getDouble(parent: QWidget, title: str, label: str, value: float = ..., min: float = ..., max: float = ..., decimals: int = ..., flags: typing.Union[QtCore.Qt.WindowFlags, QtCore.Qt.WindowType] = ...) #单行文本数据,echo为输出模式（明文、密码或不显示） QInputDialog.getText(parent: QWidget, title: str, label: str, echo: 'QLineEdit.EchoMode' = ..., text: str = ..., flags: typing.Union[QtCore.Qt.WindowFlags, QtCore.Qt.WindowType] = ..., inputMethodHints: typing.Union[QtCore.Qt.InputMethodHints, QtCore.Qt.InputMethodHint] = ...) #多行文本 QInputDialog.getMultiLineText(parent: QWidget, title: str, label: str, text: str = ..., flags: typing.Union[QtCore.Qt.WindowFlags, QtCore.Qt.WindowType] = ..., inputMethodHints: typing.Union[QtCore.Qt.InputMethodHints, QtCore.Qt.InputMethodHint] = ...) # #下拉列表,qizhong item为下拉列表的内容,迭代内从必须是字符串格式 QInputDialog.getItem(parent: QWidget, title: str, label: str, items: typing.Iterable[str], current: int = ..., editable: bool = ..., flags: typing.Union[QtCore.Qt.WindowFlags, QtCore.Qt.WindowType] = ..., inputMethodHints: typing.Union[QtCore.Qt.InputMethodHints, QtCore.Qt.InputMethodHint] = ...)
所有对话框都是有返回值的，返回的是个元祖，第一个元素就是input里对应的内容，第二个元素是个布尔量，如果对话框是按OK则返回1，取消就是返回0.
二.功能作用
1.构造函数
QInputDialog(self, parent: typing.Optional[QWidget] = ..., flags: typing.Union[QtCore.Qt.WindowFlags, QtCore.Qt.WindowType] = ...)
Window = ... # type: 'Qt.WindowType' Dialog = ... # type: 'Qt.WindowType' Sheet = ... # type: 'Qt.WindowType' Drawer = ... # type: 'Qt.WindowType' Popup = ... # type: 'Qt.WindowType' Tool = ... # type: 'Qt.WindowType' ToolTip = ... # type: 'Qt.WindowType' SplashScreen = ... # type: 'Qt.WindowType' Desktop = ... # type: 'Qt.WindowType' SubWindow = ... # type: 'Qt.WindowType' WindowType_Mask = ... # type: 'Qt.WindowType' MSWindowsFixedSizeDialogHint = ... # type: 'Qt.WindowType' MSWindowsOwnDC = ... # type: 'Qt.WindowType' X11BypassWindowManagerHint = ... # type: 'Qt.WindowType' FramelessWindowHint = ... # type: 'Qt.WindowType' CustomizeWindowHint = ... # type: 'Qt.WindowType' WindowTitleHint = ... # type: 'Qt.WindowType' WindowSystemMenuHint = ... # type: 'Qt.WindowType' WindowMinimizeButtonHint = ... # type: 'Qt.WindowType' WindowMaximizeButtonHint = ... # type: 'Qt.WindowType' WindowMinMaxButtonsHint = ... # type: 'Qt.WindowType' WindowContextHelpButtonHint = ... # type: 'Qt.WindowType' WindowShadeButtonHint = ... # type: 'Qt.WindowType' WindowStaysOnTopHint = ... # type: 'Qt.WindowType' WindowOkButtonHint = ... # type: 'Qt.WindowType' WindowCancelButtonHint = ... # type: 'Qt.WindowType' WindowStaysOnBottomHint = ... # type: 'Qt.WindowType' WindowCloseButtonHint = ... # type: 'Qt.WindowType' MacWindowToolBarButtonHint = ... # type: 'Qt.WindowType' BypassGraphicsProxyWidget = ... # type: 'Qt.WindowType' WindowTransparentForInput = ... # type: 'Qt.WindowType' WindowOverridesSystemGestures = ... # type: 'Qt.WindowType' WindowDoesNotAcceptFocus = ... # type: 'Qt.WindowType' NoDropShadowWindowHint = ... # type: 'Qt.WindowType' WindowFullscreenButtonHint = ... # type: 'Qt.WindowType' ForeignWindow = ... # type: 'Qt.WindowType' BypassWindowManagerHint = ... # type: 'Qt.WindowType' CoverWindow = ... # type: 'Qt.WindowType' MaximizeUsingFullscreenGeometryHint = ... # type: 'Qt.WindowType'
要注意的就是flag(顶层窗口样式标志)对应的枚举值了。或者有几个最常用的效果在下面的setoption里也可以设置
2.输入类型设置
QInputDialog.setInputMode(self, mode: 'QInputDialog.InputMode') TextInput = ... # type: 'QInputDialog.InputMode' IntInput = ... # type: 'QInputDialog.InputMode' DoubleInput = ... # type: 'QInputDialog.InputMode'
主要要注意的是这里的类型里没有下拉列表，因为下拉列表是需要另外设置的
QInputDialog.setComboBoxItems(self, items: typing.Iterable[str]) QInputDialog.setComboBoxEditable() #列表内容可编辑
3.选项设置（输入类型）
QInputDialog.setOption(self, option: 'QInputDialog.InputDialogOption', on: bool = ...)
QInputDialog.setOptions(self, options: typing.Union['QInputDialog.InputDialogOptions', 'QInputDialog.InputDialogOption']) QInputDialog.testOption(self, option: 'QInputDialog.InputDialogOption') -> bool: ... QInputDialog.options()-> 'QInputDialog.InputDialogOptions': ...
NoButtons = ... # type: 'QInputDialog.InputDialogOption'
UseListViewForComboBoxItems = ... # type: 'QInputDialog.InputDialogOption'
UsePlainTextEditForTextInput = ... # type: 'QInputDialog.InputDialogOption'
4.各种小分类的设置
QInputDialog.setIntMaximum()
QInputDialog.setIntMinimum()
QInputDialog.setIntRange()
QInputDialog.setIntStep()
QInputDialog.setIntValue()
QInputDialog.setDoubleMaximum()
QInputDialog.setDoubleMinimum()
QInputDialog.setDoubleRange()
QInputDialog.setDoubleDecimals()
QInputDialog.setDoubleValue()
QInputDialog.setTextEchoMode()
QInputDialog.setTextValue()
小种类的设置一定要和输入数据类型设置是一样的。否则是没有效果的（输入类型设置优先级高。）
三.常用信号
QInputDialog.intValueChanged()
QInputDialog.intValueSelected()
QInputDialog.doubleValueChanged()
QInputDialog.doubleValueSelected()
QInputDialog.textValueChanged()
QInputDialog.textValueSelected()
注意下区别，changed是只要值发生改变（不需要确认选择），而Select是只有点击确认按钮后才触发。但是都传递值作为参数。