Attach a menu onto QPushButton

Coding
1

Hi all, I would like to attach a ‘menu’ when user left-mouse click onto the QPushButton.
Not sure if there are any things that I am suppose to keep a lookout for when integrating/ using Maya and PyQt stuff…

While I tried my code as follows, it works:

cmds.window()
geos = cmds.ls(geometry = 1, visible =1)
createdGeos = cmds.listRelatives(geos, parent=1)
    
cmds.popupMenu(button=1)
for geo in createdGeos:
    cmds.menuItem(geo)
        
cmds.showWindow()

However as soon as I tried integrating into this UI of mine, it is not working:

from PyQt4.QtCore import *
from PyQt4.QtGui import *

class geoUI(QDialog):
    def __init__(self, parent=None):
        super(geoUI, self).__init__(parent)
        self.resize(300,225)
        self.initUI()

    def initUI(self):
        self.setWindowTitle('Geo UI')
        
        self.getCurrentGeoBtn = QPushButton('Get current geo')
        self.currentGeoTxt = QLineEdit()
        
        gridLayout = QGridLayout()
        gridLayout.addWidget(self.getCurrentGeoBtn, 0, 1)
        gridLayout.addWidget(self.currentGeoTxt, 0, 2)
        
        self.setLayout(gridLayout)
        
    def createConnections(self):
        self.connect(self.getCurrentGeoBtn, SIGNAL('clicked()'), self.getGeo)

    def getGeo(self):        
        geos = cmds.ls(geometry = 1, visible =1)
        createdGeos = cmds.listRelatives(geos, parent=1)
    
        cmds.popupMenu(button=1)
        for geo in createdGeos:
            cmds.menuItem(geo)


        
def main():
    global app 
    global form
    app = qApp
    form = geoUI()
    form.show()
    

if __name__ == '__main__':
    main()

Any advice?

Many thanks in advance!

2

I could be wrong, but I don’t think you can mix and match Maya’s UI widgets with Qt’s. You need to attached a QMenu to the QButton, and fill out the QMenu with QActions.

3

to elaborate on rgkovach, instead of cmds.popupMenu, use QMenu(), and add QActions to it instead of cmds.menuItem(). Then use QPushButton.setMenu(menu)

4

wow, it seems like I have stumbled upon something profound. I thought using SIP will be the solution…

5

[QUOTE=TheMaxx;25297]to elaborate on rgkovach, instead of cmds.popupMenu, use QMenu(), and add QActions to it instead of cmds.menuItem(). Then use QPushButton.setMenu(menu)[/QUOTE]

Hi TheMaxx, I am doing something similar as the TS. But could you kindly elaborate the method?
I am slightly confused about the QActions and the QPushButton.setMenu(menu)

6

[QUOTE=salik89;25311]Hi TheMaxx, I am doing something similar as the TS. But could you kindly elaborate the method?
I am slightly confused about the QActions and the QPushButton.setMenu(menu)[/QUOTE]

So the menu object needs to be created first and it will take QActions as menu items. And to access what happens when the action is triggered, make the QActions first:


action_a = QtGui.QAction('A')
action_b = QtGui.QAction('B')

menu = QtGui.QMenu()
menu.addAction(action_a)
menu.addAction(action_b)

button = QtGui.QPushButton('my button')
button.setMenu(menu)

In this example, the potential of the actions are not utilized, but fulfil the use as menu items. You can create a set of QActions for an app, then insert them into many different menus and toolbars (even make buttons out of them) and then you can enable/disable them once and the rest of the UI is updated.

7

[QUOTE=TheMaxx;25316]So the menu object needs to be created first and it will take QActions as menu items. And to access what happens when the action is triggered, make the QActions first:

In this example, the potential of the actions are not utilized, but fulfil the use as menu items. You can create a set of QActions for an app, then insert them into many different menus and toolbars (even make buttons out of them) and then you can enable/disable them once and the rest of the UI is updated.[/QUOTE]

Hmm, I am getting quite some errors such as the instancemethod in the QMenu.addAction etc. Not sure if I did it wrong.

def initUI(self):       
    self.setCameraBtn = QPushButton()
    self.setCameraBtn.setMenu(self.pop_file_menu())

def pop_file_menu(self):
        aMenu = QMenu()
        aMenu.addAction(self.fileOpenAct)

 def createConnections(self): 
        self.fileOpenAct = self.connect(self.setCameraBtn, SIGNAL('clicked()'), self.testMenu)

def fileOpenAct(self):
        camLs = cmds.ls(visible = 1, type = 'camera')
        camLsMenu = cmds.listRelatives(camLs, p=1)
        self.setCameraBtn.setMenu(camLsMenu)

These are the errors:

# TypeError: arguments did not match any overloaded call:
#   QMenu.addAction(QAction): argument 1 has unexpected type 'instancemethod'
#   QMenu.addAction(QString): argument 1 has unexpected type 'instancemethod'
#   QMenu.addAction(QIcon, QString): argument 1 has unexpected type 'instancemethod'
#   QMenu.addAction(QString, QObject, SLOT(), QKeySequence shortcut=0): argument 1 has unexpected type 'instancemethod'
#   QMenu.addAction(QString, callable, QKeySequence shortcut=0): argument 1 has unexpected type 'instancemethod'
#   QMenu.addAction(QIcon, QString, QObject, SLOT(), QKeySequence shortcut=0): argument 1 has unexpected type 'instancemethod'
#   QMenu.addAction(QIcon, QString, callable, QKeySequence shortcut=0): argument 1 has unexpected type 'instancemethod' #
8
  • fileOpenAct isnt an action, its a function, that is being redefined in createConnections
  • You need to make QActions, then connect their ‘triggered’ signals to your call back
  • pop_file_menu doesn’t return anything

See my example from above

9

In that case, should I defined all these qmenu and qactions etc within a function, maybe inside my initUI, or defined it seperately?

10

when i make a widget, i usually have a method in there that handles all the event connections, sometimes i’ll put actions into here. If it makes sense, use the designer for your widget.