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Thread: How to add scroll bar in PyQt4 retrospectively

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  1. 22nd June 2018, 11:09 #1
    MrPickle
    MrPickle is offline Beginner
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    Default Re: How to add scroll bar in PyQt4 retrospectively

    Hey high_flyer,

    I've read the doc and also followed buck54321's answer @Stackoverflow regarding my problem, but unfortunately I can't figure out how to achieve the desired behaviour. What I came out with is this code. The scrollarea shows up in the Dialog but unfortunately it has none of my content in it.
    I simply can't figure out what I do wrong.

    P.S. you can PM me also in German
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  2. 22nd June 2018, 16:40 #2
    high_flyer
    high_flyer is offline Wiseguy
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    Default Re: How to add scroll bar in PyQt4 retrospectively

    Ok, lets takes this one piece at a time.
    Please reduce your code to only show your dialog, with a scroll area that contains your main widget which only has one button or label (just so there is something to see) in the middle.
    This way we remove all non relevant noise and clutter from your code and can concentrate on the actual problem.
    ==========================signature=============== ==================
    S.O.L.I.D principles (use them!):
    https://en.wikipedia.org/wiki/SOLID_...iented_design)

    Do you write clean code? - if you are TDD'ing then maybe, if not, your not writing clean code.
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  3. 25th June 2018, 10:49 #3
    MrPickle
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    Default Re: How to add scroll bar in PyQt4 retrospectively

    Hey high_flyer,

    thanks again for the help.
    I've reduced the code to have only two radio buttons inside the grid layout which self is inside a scroll area. Nevertheless here comes the code:

    Qt Code: 
    1. # -*- coding: utf-8 -*-
    2.  
    3. # Form implementation generated from reading ui file 'test.ui'
    4. #
    5. # Created by: PyQt4 UI code generator 4.11.4
    6. #
    7. # WARNING! All changes made in this file will be lost!
    8.  
    9. from PyQt4 import QtCore, QtGui
    10.  
    11. try:
    12.     _fromUtf8 = QtCore.QString.fromUtf8
    13. except AttributeError:
    14.     def _fromUtf8(s):
    15.         return s
    16.  
    17. try:
    18.     _encoding = QtGui.QApplication.UnicodeUTF8
    19.     def _translate(context, text, disambig):
    20.         return QtGui.QApplication.translate(context, text, disambig, _encoding)
    21. except AttributeError:
    22.     def _translate(context, text, disambig):
    23.         return QtGui.QApplication.translate(context, text, disambig)
    24.  
    25. class Ui_Dialog(object):
    26.     def setupUi(self, Dialog):
    27.         Dialog.setObjectName(_fromUtf8("Dialog"))
    28.         Dialog.resize(485, 785)
    29.         Dialog.setMinimumSize(QtCore.QSize(485, 400))
    30.         Dialog.setMaximumSize(QtCore.QSize(495, 785))
    31.         Dialog.setSizeIncrement(QtCore.QSize(1, 1))
    32.         Dialog.setMouseTracking(False)
    33.         Dialog.setAutoFillBackground(False)
    34.         Dialog.setModal(False)
    35.         self.layoutWidget = QtGui.QWidget(Dialog)
    36.         self.layoutWidget.setGeometry(QtCore.QRect(10, 736, 471, 49))
    37.         self.layoutWidget.setObjectName(_fromUtf8("layoutWidget"))
    38.         self.SaveCancelLayout = QtGui.QHBoxLayout(self.layoutWidget)
    39.         self.SaveCancelLayout.setContentsMargins(0, 8, 5, 0)
    40.         self.SaveCancelLayout.setSpacing(10)
    41.         self.SaveCancelLayout.setObjectName(_fromUtf8("SaveCancelLayout"))
    42.         self.cancelButton = QtGui.QPushButton(self.layoutWidget)
    43.         self.cancelButton.setMaximumSize(QtCore.QSize(200, 40))
    44.         self.cancelButton.setLayoutDirection(QtCore.Qt.LeftToRight)
    45.         self.cancelButton.setObjectName(_fromUtf8("cancelButton"))
    46.         self.SaveCancelLayout.addWidget(self.cancelButton)
    47.         self.scrollArea = QtGui.QScrollArea(Dialog)
    48.         self.scrollArea.setGeometry(QtCore.QRect(10, 40, 471, 691))
    49.         self.scrollArea.setWidgetResizable(True)
    50.         self.scrollArea.setObjectName(_fromUtf8("scrollArea"))
    51.         self.scrollAreaWidgetContents = QtGui.QWidget()
    52.         self.scrollAreaWidgetContents.setGeometry(QtCore.QRect(0, 0, 469, 689))
    53.         self.scrollAreaWidgetContents.setObjectName(_fromUtf8("scrollAreaWidgetContents"))
    54.         self.layoutWidget1 = QtGui.QWidget(self.scrollAreaWidgetContents)
    55.         self.layoutWidget1.setGeometry(QtCore.QRect(0, 20, 471, 631))
    56.         self.layoutWidget1.setObjectName(_fromUtf8("layoutWidget1"))
    57.         self.gridLayout = QtGui.QGridLayout(self.layoutWidget1)
    58.         self.gridLayout.setMargin(9)
    59.         self.gridLayout.setSpacing(6)
    60.         self.gridLayout.setObjectName(_fromUtf8("gridLayout"))
    61.         self.line_4 = QtGui.QFrame(self.layoutWidget1)
    62.         self.line_4.setMaximumSize(QtCore.QSize(465, 16777215))
    63.         self.line_4.setFrameShape(QtGui.QFrame.HLine)
    64.         self.line_4.setFrameShadow(QtGui.QFrame.Sunken)
    65.         self.line_4.setObjectName(_fromUtf8("line_4"))
    66.         self.gridLayout.addWidget(self.line_4, 0, 0, 1, 4)
    67.         self.logEnable = QtGui.QRadioButton(self.layoutWidget1)
    68.         font = QtGui.QFont()
    69.         font.setBold(True)
    70.         font.setWeight(75)
    71.         self.logEnable.setFont(font)
    72.         self.logEnable.setChecked(True)
    73.         self.logEnable.setObjectName(_fromUtf8("logEnable"))
    74.         self.buttonGroup_logging = QtGui.QButtonGroup(Dialog)
    75.         self.buttonGroup_logging.setObjectName(_fromUtf8("buttonGroup_logging"))
    76.         self.buttonGroup_logging.addButton(self.logEnable)
    77.         self.gridLayout.addWidget(self.logEnable, 1, 1, 1, 1)
    78.         self.logDisable = QtGui.QRadioButton(self.layoutWidget1)
    79.         font = QtGui.QFont()
    80.         font.setBold(True)
    81.         font.setWeight(75)
    82.         self.logDisable.setFont(font)
    83.         self.logDisable.setObjectName(_fromUtf8("logDisable"))
    84.         self.buttonGroup_logging.addButton(self.logDisable)
    85.         self.gridLayout.addWidget(self.logDisable, 1, 2, 1, 1)
    86.         self.scrollArea.setWidget(self.scrollAreaWidgetContents)
    87.  
    88.         self.retranslateUi(Dialog)
    89.         QtCore.QMetaObject.connectSlotsByName(Dialog)
    90.  
    91.     def retranslateUi(self, Dialog):
    92.         Dialog.setWindowTitle(_translate("Dialog", "Test Editor", None))
    93.         self.cancelButton.setText(_translate("Dialog", "Stop and exit", None))
    94.         self.logEnable.setText(_translate("Dialog", "enable logfile", None))
    95.         self.logDisable.setText(_translate("Dialog", "disable logfile", None))
    96.  
    97.  
    98. if __name__ == "__main__":
    99.     import sys
    100.     app = QtGui.QApplication(sys.argv)
    101.     Dialog = QtGui.QDialog()
    102.     ui = Ui_Dialog()
    103.     ui.setupUi(Dialog)
    104.     Dialog.show()
    105.     sys.exit(app.exec_())
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