PyQt Signals and multiple sources
I am beginner in programming in pyqt. I have been trying to call the
same function from multiple events- but each event results in a
different instance of the function. I am just unable to figure out how
to retrieve the source which calls the function:
My source signal declarations are as below:
QtCore.QObject.connect(self.ui.Button_Process, QtCore.SIGNAL("clicked
()"), self.activate_tab)
QtCore.QObject.connect(self.ui.Button_Material, QtCore.SIGNAL("clicked
()"), self.activate_tab)
QtCore.QObject.connect(self.ui.Button_Geometry, QtCore.SIGNAL("clicked
()"), self.activate_tab)
for each of the above source i want to activate a different instance
of the activate_tab function. Any help would be greatly appreciated!
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Re: PyQt Signals and multiple sources
On Dec 21, 11:15 am, "John Posner" wrote:
> On Sun, 20 Dec 2009 16:59:11 -0500, Zabin wrote:
> > I am beginner in programming in pyqt. I have been trying to call the
> > same function from multiple events- but each event results in a
> > different instance of the function. I am just unable to figure out how
> > to retrieve the source which calls the function:
>
> > My source signal declarations are as below:
> > QtCore.QObject.connect(self.ui.Button_Process, QtCore.SIGNAL("clicked
> > ()"), self.activate_tab)
> > QtCore.QObject.connect(self.ui.Button_Material, QtCore.SIGNAL("clicked
> > ()"), self.activate_tab)
> > QtCore.QObject.connect(self.ui.Button_Geometry, QtCore.SIGNAL("clicked
> > ()"), self.activate_tab)
>
> > for each of the above source i want to activate a different instance
> > of the activate_tab function. Any help would be greatly appreciated!
>
> In the self.activate_tab() method, use self.sender() to determine which
> object sent the signal.
>
> -John- Hide quoted text -
>
> - Show quoted text -
Awesum. That works!
To get the object name you just need to use self.sender().objectName()
Cheers!
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QDoubleValidator
Hey! I am new PyQt programmer and want to restrict users to allow only numeric values into a table and lineedit boxes. I found the QDoubleValidator class but am unsure as to how to implement it. (I am a little shaky on the concept of parent and how to define them). Any help would be much appreciated! -- http://mail.python.org/mailman/listinfo/python-list
Re: QDoubleValidator
On Jan 7, 10:23 am, Zabin wrote: > Hey! > > I am new PyQt programmer and want to restrict users to allow only > numeric values into a table and lineedit boxes. I found the > QDoubleValidator class but am unsure as to how to implement it. (I am > a little shaky on the concept of parent and how to define them). Any > help would be much appreciated! I managed to get it going for the line edit- but am stuck with checking a cell in a table as cells do not have the set validator attribute- here's the code i had for the line edit: self.ui.Thickness_datum.setValidator(QtGui.QDoubleValidator(-999.0, 999.0, 2, self.ui.Thickness_datum)) for the table i thought it would be: self.ui.table_process.item(row,2).setValidator(QtGui.QDoubleValidator (-999.0, 999.0, 2, self.ui.table_process.item(row,2))) Any help would be appreciated -- http://mail.python.org/mailman/listinfo/python-list
Validating cells of a table PyQt
Hey! I am new PyQT programmer. I am trying to create a table in which cells only take in numeric data. I am unable to use setValidator on table cells. Looking around i found some material on the editor attribute but I dont know how to apply this. Any help will be appreciated Cheers! -- http://mail.python.org/mailman/listinfo/python-list
setTextAlignment function Qtablewidget PyQt
Hey! I am trying to align contents of some table cells but find the code below working for some fields and not for others. I am stuck as to why this is happening. Help will be gretly appreciated! setTextAlignment(QtCore.Qt.AlignVCenter) Cheers Zabin -- http://mail.python.org/mailman/listinfo/python-list
Re: setTextAlignment function Qtablewidget PyQt
On Jan 11, 1:10 pm, Zabin wrote: > Hey! > > I am trying to align contents of some table cells but find the code > below working for some fields and not for others. I am stuck as to why > this is happening. Help will be gretly appreciated! > > setTextAlignment(QtCore.Qt.AlignVCenter) > > Cheers > Zabin Figured it out! It was just the '\n' character being read with the line from the text file that messed up the formatting. just needed to use the line.strip() function before passing it to the table as a table widget item. -- http://mail.python.org/mailman/listinfo/python-list
os.system function
Hey everyone! I am a new python programmer. I am trying to get the general file functionality with options of save and save as working. These save functions save a folder with multiple files. Upon using the os.system copy function- if my destination directory has files with similar names- i am asked whether i want to replace the files on the command prompt. Is there some way of getting this question into a dialog box? Also is there someway of avoiding or programmatically setting the response to the command prompt? Cheers Zabin -- http://mail.python.org/mailman/listinfo/python-list
Re: os.system function
On Jan 12, 10:23 am, Chris Rebert wrote:
> On Mon, Jan 11, 2010 at 12:43 PM, Zabin wrote:
> > Hey everyone!
>
> > I am a new python programmer. I am trying to get the general file
> > functionality with options of save and save as working. These save
> > functions save a folder with multiple files. Upon using the os.system
> > copy function- if my destination directory has files with similar
> > names- i am asked whether i want to replace the files on the command
> > prompt.
>
> > Is there some way of getting this question into a dialog box?
>
> > Also is there someway of avoiding or programmatically setting the
> > response to the command prompt?
>
> You can probably avoid using os.system() entirely (always a good
> thing) by instead using the functions in the `shutil`
> library:http://docs.python.org/library/shutil.html
>
> And for future reference, the `subprocess` module is the preferred way
> to invoke external programs, rather than
> os.system():http://docs.python.org/library/subprocess.html
>
> Cheers,
> Chris
> --http://blog.rebertia.com
Thanks for the pointersi had a look around and found the site:
http://www.microsoft.com/resources/documentation/windows/xp/all/proddocs/en-us/xcopy.mspx?mfr=true
to disable the prompt- i needed to include /y as below:
os.system ('xcopy /s %s %s /y ' % (dirExe, dirname_new))
and just wondering- whats the drawback of using os.system() command
Appreciate the prompt suggestions!
Cheers
Zabin
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Re: os.system function
On Jan 12, 11:31 am, Jeremy Sanders wrote:
> Zabin wrote:
> > Thanks for the pointersi had a look around and found the site:
>
> http://www.microsoft.com/resources/documentation/windows/xp/all/prodd...
> us/xcopy.mspx?mfr=true
>
>
>
> > to disable the prompt- i needed to include /y as below:
> > os.system ('xcopy /s %s %s /y ' % (dirExe, dirname_new))
>
> > and just wondering- whats the drawback of using os.system() command
>
> - It won't work across different platforms (unix, mac, windows)
> - Spaces or special characters in the filename will mess up the command line
> and can lead to huge security flaws in your program.
> - It's inefficient as you have to start a new program to do the work (slow
> on windows)
> - Error handling from the xcopy process will not be easy
>
> --
> Jeremy Sandershttp://www.jeremysanders.net/
wow- thanks heaps!
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Linking Python to multiple qt forms
Hey! I am new to PyQt programming and am trying to activate a secondary qt form from a primary form. I am unsure as to how this will work as i am using pyuic4 to convert .ui file to .py and then importing it by: from SimLCM_GUI import Ui_main I am unsure as to how the self.uicommands will function if there are two such .ui files. Thanks in advance for any advice! Cheers Zabin -- http://mail.python.org/mailman/listinfo/python-list
Undo/Redo in PyQt
Hey! I am trying to implement the undo and redo facility in pyqt. I have gone through some sites and was wondering whether iyou always need to create subclasses and their definitions for the undo/redo action. My program currently has a single window in which the user enters information which is used to update a text file as soon as the user leaves the field- so i essentially need to undo the text in that field as well as the file. I am puzzled as to how to approach this. Any help will be much appreciated! Cheers Zabin -- http://mail.python.org/mailman/listinfo/python-list
PyQt event recognition
Hey Everyone! I am a new pyqt programmer. I have a tab widget with lots of line edits, radiobuttons and combo boxes. I want to trigger a single sub the moment any one of these widgets listed are modified. I tried using the clicked signal- but it doesnt seem to work. Any suggestion will be much appreciated. Cheers! Zabin -- http://mail.python.org/mailman/listinfo/python-list
Re: PyQt event recognition
On Jan 14, 9:00 am, Zabin wrote: > Hey Everyone! > > I am a new pyqt programmer. I have a tab widget with lots of line > edits, radiobuttons and combo boxes. I want to trigger a single sub > the moment any one of these widgets listed are modified. I tried using > the clicked signal- but it doesnt seem to work. Any suggestion will be > much appreciated. > > Cheers! > > Zabin Essentailly what i am looking for is a way to easily and quickly attach multiple objects to the same slot via the same signal Cheers Zabin -- http://mail.python.org/mailman/listinfo/python-list
Re: PyQt event recognition
On Jan 14, 10:22 am, Jonathan Gardner wrote: > On Jan 13, 12:21 pm, Zabin wrote: > > > On Jan 14, 9:00 am, Zabin wrote: > > > > I am a new pyqt programmer. I have a tab widget with lots of line > > > edits, radiobuttons and combo boxes. I want to trigger a single sub > > > the moment any one of these widgets listed are modified. I tried using > > > the clicked signal- but it doesnt seem to work. Any suggestion will be > > > much appreciated. > > > Essentailly what i am looking for is a way to easily and quickly > > attach multiple objects to the same slot via the same signal > > Zabin, you'd probably get a better response on the PyQt mailing list, > or even the Qt mailing list for Qt API and behavior. will try that- thanks=) -- http://mail.python.org/mailman/listinfo/python-list
