在我尝试编写自己的Python PyQt4模块函数之前...我想问一下是否有人有这样的函数可以分享。
在许多使用PyQt4和qtDesigner构建GUI的Python程序中,我使用QSettings方法保存和恢复所有小部件的UI状态和值,以便在关闭和启动时使用。
以下示例展示了我如何保存和恢复一些lineEdit、checkBox和radioButton字段。
是否有一个可以遍历UI并查找所有小部件/控件及其状态并将它们保存(例如guisave())以及另一个可以恢复它们(例如guirestore())的函数呢?
我的closeEvent看起来像这样:
#---------------------------------------------
# close by x OR call to self.close
#---------------------------------------------
def closeEvent(self, event): # user clicked the x or pressed alt-F4...
UI_VERSION = 1 # increment this whenever the UI changes significantly
programname = os.path.basename(__file__)
programbase, ext = os.path.splitext(programname) # extract basename and ext from filename
settings = QtCore.QSettings("company", programbase)
settings.setValue("geometry", self.saveGeometry()) # save window geometry
settings.setValue("state", self.saveState(UI_VERSION)) # save settings (UI_VERSION is a constant you should increment when your UI changes significantly to prevent attempts to restore an invalid state.)
# save ui values, so they can be restored next time
settings.setValue("lineEditUser", self.lineEditUser.text());
settings.setValue("lineEditPass", self.lineEditPass.text());
settings.setValue("checkBoxReplace", self.checkBoxReplace.checkState());
settings.setValue("checkBoxFirst", self.checkBoxFirst.checkState());
settings.setValue("radioButton1", self.radioButton1.isChecked());
sys.exit() # prevents second call
我的MainWindow初始化大致如下:
def __init__(self, parent = None):
# initialization of the superclass
super(QtDesignerMainWindow, self).__init__(parent)
# setup the GUI --> function generated by pyuic4
self.setupUi(self)
#---------------------------------------------
# restore gui position and restore fields
#---------------------------------------------
UI_VERSION = 1
settings = QtCore.QSettings("company", programbase) # http://pyqt.sourceforge.net/Docs/PyQt4/pyqt_qsettings.html
self.restoreGeometry(settings.value("geometry"))
self.restoreState(settings.value("state"),UI_VERSION)
self.lineEditUser.setText(str(settings.value("lineEditUser"))) # restore lineEditFile
self.lineEditPass.setText(str(settings.value("lineEditPass"))) # restore lineEditFile
if settings.value("checkBoxReplace") != None:
self.checkBoxReplace.setCheckState(settings.value("checkBoxReplace")) # restore checkbox
if settings.value("checkBoxFirst") != None:
self.checkBoxFirst.setCheckState(settings.value("checkBoxFirst")) # restore checkbox
value = settings.value("radioButton1").toBool()
self.ui.radioButton1.setChecked(value)
guisave(self.ui, QtCore.QSettings('saved.ini', QtCore.QSettings.IniFormat))
,这将创建一个可以在用户之间共享的文件。 - Snorfalorpagusvalue = unicode(settings.value(name).toString())
,因为 settings.value 返回的是 QVariant。 - Snorfalorpagusobj.setCheckState(value)
会启用三态复选框,这可能并非期望的行为。我知道我从来没有想过要用三态复选框,因此我使用了obj.setChecked(value)
。我不确定如何在加载时检测它,并为两种情况正确地恢复。 - Snorfalorpagus