Toolbar button with drop down menu

Question

I want to create my own Toolbar with a Toolbar button which has a drop down menu:

The following code works fine in the QGIS console:

from qgis.core import Qgis
from PyQt5.QtWidgets import QToolBar,QMenu,QToolButton,QPushButton,QAction
def findActionByObjectName(objname,iface):
 try:
 toolbars = iface.mainWindow().findChildren(QToolBar)
 for toolbar in toolbars:
 for action in toolbar.actions():
 if action.objectName():
 if action.objectName().lower() == objname.lower(): return action
 if action.actionGroup() is not None:
 for a in action.actionGroup().actions():
 if a.objectName():
 if a.objectName().lower() == objname.lower(): return a
 menubar = iface.mainWindow().menuBar()
 for action in menubar.actions():
 if action.menu():
 for action in action.menu().actions():
 if action.menu():
 for a in action.menu().actions():
 if a.objectName():
 if a.objectName().lower() == objname.lower(): return a
 else:
 if action.objectName():
 if action.objectName().lower() == objname.lower(): return action
 else:
 if action.objectName():
 if action.objectName().lower() == objname.lower(): return action
 except Exception as e:
 print(e)
toolbar = iface.mainWindow().findChild(QToolBar,'Test')
if not toolbar:
 toolbar = QToolBar()
 toolbar.setObjectName('Test')
 toolbar.setWindowTitle("TEST")
 iface.addToolBar(toolbar)
actionlist = ["mActionMeasure","mActionMeasureArea","mActionMeasureAngle"]
stdAction =None
menu = QMenu()
for name in actionlist:
 action = findActionByObjectName(name,iface)
 if action:
 print ('found:',action.objectName()) 
 menu.addAction(action)
stdAction=QAction("Measure")
stdAction.setMenu(menu)
toolbar.addAction(stdAction)

When it runs from my plugin, it creates the toolbar, but not the button with the menu?

• Pavel Pereverzev: have you tried using the QTreeWidget?
• The Rabbit: What do you mean?

Answer 1

from PyQt5.QtWidgets import QWidget, QToolBar,QMenu,QToolButton,QPushButton,QSizePolicy
def addAction(widget, actionNameOrList,parent=None):
 try:
 if isinstance(actionNameOrList, str):
 tname = actionNameOrList.lower()
 if tname == "|":
 widget.addSeparator()
 else:
 action = iface.mainWindow().findChild(QAction,actionNameOrList)
 if action is not None:
 widget.addAction(action)
 else:
 widget.addWidget(QLabel(actionNameOrList,parent))
 elif isinstance(actionNameOrList, list):
 widget.addWidget(createToolButton(actionNameOrList,parent))
 except Exception as e:
 info(e)
def createToolButton( actionNamesList, parent=None):
 try:
 menu = QMenu(parent)
 for an in actionNamesList:
 addAction(menu,an,parent)
 actions = [a for a in menu.actions()]
 tb = QToolButton()
 tb.setDefaultAction(actions[0])
 tb.setMenu(menu)
 tb.setPopupMode(QToolButton.MenuButtonPopup)
 menu.triggered.connect(tb.setDefaultAction)
 return tb
 except Exception as e:
 info(e)
def info(*args):
 print(args)
try: 
 tb_name = "mytb_test"
 tb = iface.mainWindow().findChild(QToolBar,tb_name) 
 if tb is None:#create the toolbar
 tb = QToolBar(iface.mainWindow())
 tb.setObjectName(tb_name)
 tb.setWindowTitle("My Toolbar")
 iface.mainWindow().addToolBarBreak()#toolbar in new line
 iface.addToolBar(tb)
 else:
 tb.clear()
 #add actions to tb
 actionsList =["MyAPp:","mActionSaveProject","|","mActionZoomIn","mActionZoomOut",["mActionMeasure","mActionMeasureAngle","mActionMeasureArea"]]
 for a in actionsList:
 addAction(tb,a)
 #add a hide button
 btnObjectName = 'mClose_' + tb_name
 btn = tb.findChild(QPushButton, btnObjectName)
 if btn is None:
 btnHide = QPushButton()
 btnHide.setObjectName(btnObjectName)
 btnHide.setMaximumWidth(15)
 btnHide.setToolTip('close')
 btnHide.clicked.connect(lambda: tb.setHidden(True))
 #spacer
 spacer = QWidget()
 spacer.setSizePolicy(QSizePolicy.Expanding, QSizePolicy.Expanding)
 tb.addWidget(spacer)
 tb.addWidget(btnHide)
 tb.show()
except Exception as e:
 info(e)
 enter code here