python - I try to use QFileDialog for choose a file on PyQt but it don't run -
i'm new on stackoverflow. have mainwindow on pyqt, want click button , open qfiledialog choose file. problem is: if use mainwindow, qfiledialog don't run. if use dialog, qfiledialog run.
this code mainwindow.
import sys import_fsa import import_fsa pyqt4 import qtcore, qtgui pyqt4.qtgui import qfiledialog vannucci_gemignani import ui_mainwindow class gui_fsa(qtgui.qmainwindow): def __init__(self): qtgui.qmainwindow.__init__(self) self.ui=ui_mainwindow() self.ui.setupui(self) qtcore.qobject.connect(self.ui.button_browse, qtcore.signal('clicked()'), self.browse) def browse(self): fname=qfiledialog.getopenfilename() self.lineedit.settext(fname) data_set=import_fsa(fname) if __name__ == "__main__": app = qtgui.qapplication(sys.argv) mainwindow = qtgui.qmainwindow() ui = ui_mainwindow() ui.setupui(mainwindow) mainwindow.show() sys.exit(app.exec_()) this code dialog. here write code in .py generate using pyuic4 (qtdesigner)
from pyqt4 import qtcore, qtgui pyqt4.qtgui import qfiledialog ab1 import abifreader import pylab try: _fromutf8 = qtcore.qstring.fromutf8 except attributeerror: _fromutf8 = lambda s: s class ui_dialog(object): def setupui(self, dialog): dialog.setobjectname(_fromutf8("dialog")) dialog.resize(508, 363) self.pushbutton = qtgui.qpushbutton(dialog) self.pushbutton.setgeometry(qtcore.qrect(10, 40, 75, 23)) self.pushbutton.setobjectname(_fromutf8("pushbutton")) self.lineedit = qtgui.qlineedit(dialog) self.lineedit.setgeometry(qtcore.qrect(110, 40, 361, 20)) self.lineedit.setobjectname(_fromutf8("lineedit")) self.retranslateui(dialog) qtcore.qmetaobject.connectslotsbyname(dialog) qtcore.qobject.connect(self.pushbutton, qtcore.signal('clicked()'), self.selectfile) def retranslateui(self, dialog): dialog.setwindowtitle(qtgui.qapplication.translate("dialog", "dialog", none, qtgui.qapplication.unicodeutf8)) self.pushbutton.settext(qtgui.qapplication.translate("dialog", "pushbutton", none, qtgui.qapplication.unicodeutf8)) def selectfile(self): fname=qfiledialog.getopenfilename() self.lineedit.settext(fname) reader=abifreader(fname) dati=reader.getdata('data',1) pylab.plot(dati) if __name__ == "__main__": import sys app = qtgui.qapplication(sys.argv) dialog = qtgui.qdialog() ui = ui_dialog() ui.setupui(dialog) dialog.show() sys.exit(app.exec_()) this vannucci_gemignani.py:
from pyqt4 import qtcore, qtgui try: _fromutf8 = qtcore.qstring.fromutf8 except attributeerror: _fromutf8 = lambda s: s class ui_mainwindow(object): def setupui(self, mainwindow): mainwindow.setobjectname(_fromutf8("mainwindow")) mainwindow.resize(1445, 744) self.centralwidget = qtgui.qwidget(mainwindow) self.centralwidget.setobjectname(_fromutf8("centralwidget")) self.gridlayoutwidget = qtgui.qwidget(self.centralwidget) self.gridlayoutwidget.setgeometry(qtcore.qrect(10, 10, 771, 83)) self.gridlayoutwidget.setobjectname(_fromutf8("gridlayoutwidget")) self.gridlayout = qtgui.qgridlayout(self.gridlayoutwidget) self.gridlayout.setmargin(0) self.gridlayout.setobjectname(_fromutf8("gridlayout")) self.button_browse = qtgui.qpushbutton(self.gridlayoutwidget) self.button_browse.setobjectname(_fromutf8("button_browse")) self.gridlayout.addwidget(self.button_browse, 0, 0, 1, 1) self.button_plot = qtgui.qpushbutton(self.gridlayoutwidget) self.button_plot.setobjectname(_fromutf8("button_plot")) self.gridlayout.addwidget(self.button_plot, 1, 0, 1, 1) self.lineedit = qtgui.qlineedit(self.gridlayoutwidget) self.lineedit.setobjectname(_fromutf8("lineedit")) self.gridlayout.addwidget(self.lineedit, 0, 1, 1, 1) self.button_clear = qtgui.qpushbutton(self.gridlayoutwidget) self.button_clear.setobjectname(_fromutf8("button_clear")) self.gridlayout.addwidget(self.button_clear, 2, 0, 1, 1) self.label = qtgui.qlabel(self.centralwidget) self.label.setgeometry(qtcore.qrect(20, 130, 61, 31)) self.label.setobjectname(_fromutf8("label")) self.label_2 = qtgui.qlabel(self.centralwidget) self.label_2.setgeometry(qtcore.qrect(700, 130, 61, 31)) self.label_2.setobjectname(_fromutf8("label_2")) self.label_3 = qtgui.qlabel(self.centralwidget) self.label_3.setgeometry(qtcore.qrect(20, 430, 61, 31)) self.label_3.setobjectname(_fromutf8("label_3")) self.label_4 = qtgui.qlabel(self.centralwidget) self.label_4.setgeometry(qtcore.qrect(700, 430, 61, 31)) self.label_4.setobjectname(_fromutf8("label_4")) self.widget = matplotlibwidget(self.centralwidget) self.widget.setgeometry(qtcore.qrect(90, 130, 571, 251)) self.widget.setobjectname(_fromutf8("widget")) self.widget_2 = matplotlibwidget2(self.centralwidget) self.widget_2.setgeometry(qtcore.qrect(770, 130, 571, 251)) self.widget_2.setobjectname(_fromutf8("widget_2")) self.widget_3 = matplotlibwidget3(self.centralwidget) self.widget_3.setgeometry(qtcore.qrect(90, 430, 571, 251)) self.widget_3.setobjectname(_fromutf8("widget_3")) self.widget_4 = matplotlibwidget4(self.centralwidget) self.widget_4.setgeometry(qtcore.qrect(770, 430, 571, 251)) self.widget_4.setobjectname(_fromutf8("widget_4")) mainwindow.setcentralwidget(self.centralwidget) self.menubar = qtgui.qmenubar(mainwindow) self.menubar.setgeometry(qtcore.qrect(0, 0, 1445, 21)) self.menubar.setobjectname(_fromutf8("menubar")) self.menufile = qtgui.qmenu(self.menubar) self.menufile.setobjectname(_fromutf8("menufile")) mainwindow.setmenubar(self.menubar) self.statusbar = qtgui.qstatusbar(mainwindow) self.statusbar.setobjectname(_fromutf8("statusbar")) mainwindow.setstatusbar(self.statusbar) self.menubar.addaction(self.menufile.menuaction()) self.retranslateui(mainwindow) qtcore.qmetaobject.connectslotsbyname(mainwindow) def retranslateui(self, mainwindow): mainwindow.setwindowtitle(qtgui.qapplication.translate("mainwindow", "fsa plotter", none, qtgui.qapplication.unicodeutf8)) self.button_browse.settext(qtgui.qapplication.translate("mainwindow", "browse", none, qtgui.qapplication.unicodeutf8)) self.button_plot.settext(qtgui.qapplication.translate("mainwindow", "plot", none, qtgui.qapplication.unicodeutf8)) self.button_clear.settext(qtgui.qapplication.translate("mainwindow", "clear", none, qtgui.qapplication.unicodeutf8)) self.label.settext(qtgui.qapplication.translate("mainwindow", "channel 1", none, qtgui.qapplication.unicodeutf8)) self.label_2.settext(qtgui.qapplication.translate("mainwindow", "channel 2", none, qtgui.qapplication.unicodeutf8)) self.label_3.settext(qtgui.qapplication.translate("mainwindow", "channel 3", none, qtgui.qapplication.unicodeutf8)) self.label_4.settext(qtgui.qapplication.translate("mainwindow", "channel 4", none, qtgui.qapplication.unicodeutf8)) self.menufile.settitle(qtgui.qapplication.translate("mainwindow", "file", none, qtgui.qapplication.unicodeutf8)) matplotlibwidget import matplotlibwidget matplotlibwidget3 import matplotlibwidget3 matplotlibwidget2 import matplotlibwidget2 matplotlibwidget4 import matplotlibwidget4
the file-dialog doesn't show, because did not create instance of gui_fsa class.
to fix that, make following changes:
if __name__ == "__main__": app = qtgui.qapplication(sys.argv) mainwindow = gui_fsa() # next 2 lines aren't needed # ui = ui_mainwindow() # ui.setupui(mainwindow) mainwindow.show() sys.exit(app.exec_()) there problem need fix, in browse method. widgets ui_mainwindow need accessed via self.ui. make following changes:
def browse(self): fname = qfiledialog.getopenfilename() self.ui.lineedit.settext(fname) ... one final suggestion: avoid using old-style syntax connecting signals, , use new-style syntax instead:
# don't this: # qtcore.qobject.connect(self.ui.button_browse, qtcore.signal('clicked()'), self.browse) # this! self.ui.button_browse.clicked.connect(self.browse)
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