How to remove the empty area of QDialog
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My issue is that the yellow area can't be removed.
I've tried many methods, but they were useless.
I need your suggestions, thanks.def initMainDockWidget(self): #============================ #Global Layout #============================ self.globalLayout = QtWidgets.QVBoxLayout(self) self.globalLayout.setContentsMargins(0,0,0,0) self.globalLayout.setSpacing(0) #============================ #Mian window #============================ self.mainWin = QtWidgets.QMainWindow() self.mainWin.setStyleSheet("QMainWindow::pane{border: 0;Padding:0;}") #================ #Top Widget #================ self.mainTopWidget = QtWidgets.QWidget() self.mainTopWidget.setContentsMargins(0,0,0,0) self.mainTopWidget.setMinimumWidth(300) self.mainTopWidget.setFixedHeight(35) #_set mainTopWidget object name self.mainTopWidget.setObjectName('controlPanel') #_mainLayout self.mainTopLayout = QtWidgets.QVBoxLayout() self.mainTopLayout.setAlignment(QtCore.Qt.AlignTop | QtCore.Qt.AlignVCenter) self.mainTopLayout.setSpacing(0) #_QFrame================================================ self.mainFrame = QtWidgets.QFrame() self.mainFrame.setFrameShape(QtWidgets.QFrame.NoFrame) self.mainFrame.setLineWidth(0) self.mainFrame.setFixedHeight(35) self.mainFrame.setContentsMargins(0,0,0,0) self.mainFrame.setStyleSheet('QFrame{background-color:rgb(100,0,0);border: 0;Padding:0;}') #_centrallayout self.centralLayout = QtWidgets.QHBoxLayout() self.centralLayout.setAlignment(QtCore.Qt.AlignTop | QtCore.Qt.AlignVCenter) self.centralLayout.setSpacing(1) #_Spacer spacerWidth = (self.width()/3)*10 self.spacerL = QtWidgets.QSpacerItem(spacerWidth, 5, QtWidgets.QSizePolicy.Maximum, QtWidgets.QSizePolicy.Maximum) self.spacerR = QtWidgets.QSpacerItem(spacerWidth, 5, QtWidgets.QSizePolicy.Maximum, QtWidgets.QSizePolicy.Maximum) #_GroupManager self.btn_GM = QtWidgets.QPushButton('GM', self.mainTopWidget) self.btn_GM.setFixedWidth(45) self.btn_GM.setFixedHeight(20) self.btn_GM.setFont(QtGui.QFont('Caliria', 8)) #_AddGb self.btn_addGb = QtWidgets.QPushButton('+', self.mainTopWidget) self.btn_addGb.setFixedWidth(45) self.btn_addGb.setFixedHeight(20) self.btn_addGb.setFont(QtGui.QFont('Caliria',12)) #_QSlider self.slider = QtWidgets.QSlider(QtCore.Qt.Horizontal) self.slider.setFixedWidth(180) self.slider.setPageStep(1) self.slider.setSingleStep(10) self.slider.setRange(0,100) #_QLineEdit self.le_sliderValue = QtWidgets.QLineEdit('100', self.mainTopWidget) self.le_sliderValue.setToolTip('Slider Maximum') self.le_sliderValue.setFixedWidth(50) self.le_sliderValue.setValidator(QtGui.QRegExpValidator(QtCore.QRegExp("[0-9]*"), self)) self.le_sliderStep = QtWidgets.QLineEdit('10', self.mainTopWidget) self.le_sliderStep.setToolTip('Slider Step') self.le_sliderStep.setFixedWidth(20) self.le_sliderStep.setValidator(QtGui.QRegExpValidator(QtCore.QRegExp("[0-9]*"), self)) #================ #Setup Central Layout #================ self.centralLayout.addWidget(self.btn_GM) self.centralLayout.addItem(self.spacerL) self.centralLayout.addWidget(self.btn_addGb) self.centralLayout.addWidget(self.slider) self.centralLayout.addWidget(self.le_sliderValue) self.centralLayout.addWidget(self.le_sliderStep) self.centralLayout.addItem(self.spacerR) #================ #Set Layout #================ #_controlPanel to QFrame self.mainFrame.setLayout(self.centralLayout) #_Append QFrame self.mainTopLayout.addWidget(self.mainFrame) #_QFrame to the mainTopWidget self.mainTopWidget.setLayout(self.mainTopLayout) #_set Central Widget self.mainWin.setCentralWidget(self.mainTopWidget) #_Append mainWin self.globalLayout.addWidget(self.mainWin) -
Remove
self.mainTopWidget.setContentsMargins(0,0,0,0)and this
self.mainFrame.setContentsMargins(0,0,0,0)and set
self.mainTopLayout.setContentsMargins(0,0,0,0)In short - use content margins on layouts, not on widgets. They do kinda similar but actually different things. On widgets they are seldom used and 0 is the default anyway.
