I looked through the code and two things I see different than what I
have:
a. I set the size of my RenderWindow
b. I keep a reference to it, which probably isn't your problem because
your not getting a seg fault.
I've got an example but I can't verify that it works since I don't have
vtk installe
Is there a way to render ps (postscript) files, to a pixmap, or QImage?
Something I could display in a widget at least.
thanks
mbs
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You should be able to 'setMaximumHeight' you can also use the
setSizePolicy and set the widgets size policy to what you want. And
there is a method for QBoxLayout where you set the 'stretch factor' when
you add a widget, so that certain widgets will stretch preferentially to
others. Maybe you cou
Hao
I don't get a segmentation fault, I get a different error:
QObject::connect: Cannot queue arguments of type 'QTextCursor'
(Make sure 'QTextCursor' is registered using qRegisterMetaType().)
But I would suggest using a QThread instead of a Threading.thread, and
then you can connect them with
Okay I've figured out a way to make this work. For my QThread's run
function I create a new object, then any connections made to that object
will be evaluated in the thread that is was created in.
Its taken me a bit to post this because I wrote a similar test in c++.
Which I found the same result
If I have a QThread how do I connect signals to it so that it receives
signals and the slot is executed in a separate thread.
My understanding is that if I call a QThread.exec_() then I start that
thread's event loop. A signal that is connected to the thread should be
evaluated during that thre
I have a small project I am going to try involving large file uploads.
I want to make a small pyqt application that would enable large file
uploads via http post requests of smaller chunks.
Part of the reason I am posting it here is because of "releasing". I
have access to windows computers so
do not have dbus if that makes a difference.
mbs
On Tue, 2009-09-08 at 08:15 +0100, Phil Thompson wrote:
> On Mon, 07 Sep 2009 20:44:13 -0400, Matt Smith
> wrote:
> > The long and short, when I use a QThread at the end of my run method, I
> > call self.deleteLater(). If I
The long and short, when I use a QThread at the end of my run method, I
call self.deleteLater(). If I call self.deleteLater() the "finished()"
signal is never emitted. It used to emit "finished()" even if I called
deletLate(), and I thought I needed the self.deleteLater() to clean up
connections
Okay, I've got two QListWidgets in a frame with an HBoxLayout. I was
looking for some suggestions to make the width of the two widgets
adjust-able.
Ideally I would like to be able to grab the space between the widgets
with the mouse and move it to adjust the way that the available space is
distr
Thats not quite what I'm getting at. That will emit the signal, which
is the 'old style' but the new style is a bit different, and after you
set it up you emit the signal by using:
mysignal.emit(args)
My question is that the only way I know how to make a 'new style' signal
emittable is v
I'm not clear on how to make an object emit a signal without
subclassing, with the new style emits.
ie, old style:
myscene.emit(
QtCore.SIGNAL("itemClicked(QGraphicsSceneMouseEvent*)"
,ev
)
Where as if I subclass:
class MyScene(QtGui.QGraphicsScene):
touc
Okay I was playing around with python 3 and I found that the SVGWidget
gives me a 'file not found error' when I use either the method
#new data is a QString svg file
serialized_data = newdata.toLocal8Bit()
self.load(serialized_data)
or if I use a connect statement,
self.connect(self,
On Wed, 2009-03-18 at 09:15 +, pyqt-requ...@riverbankcomputing.com
wrote:
> From: Wolfgang Rohdewald
> Subject: [PyQt] dragging a QGraphicsSvgItem
> To: pyqt@riverbankcomputing.com
> Message-ID: <200903180430.09934.wolfg...@rohdewald.de>
> Content-Type: text/plain; charset="us-ascii"
>
> Whi
Okay I wrote a short script, the code you sent is missing the
connection, plus I don't know what "addPixmap" is, so here is a small
version of what I think you are trying to do.
If you aren't sublcassing the QGraphicsView, you can do the same thing I
am doing via the .scene() to get the QGraphic
Okay, I've got the latest PyQt, and I built it using the latest Qt4.5 so
now I wanna know, how do I put plugins into a webview? is that
supported yet?
thanks
mbs
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I wonder what you mean by "crash" I had a similar problem passing a
QMouseEvent, when I upgraded I needed to use &QMouseEvent with the
ampersand. When it didn't work I would get the last event, so sometimes
I would get a QTimer instead of a mouse event, but once I put the '&' in
it worked ok.
mbs
>From the looks of it your list widget has the name of the file you want
to open and display so what you can do is connect the signal being
emitted, itemClicked(QListWidgetItem *), and then get the text from the
item passed with say my_list_item.text().
>From that you should be able to make a QP
Okay this is probably more of me getting bit by not using the correct
signatures, but the behavior has changed from my 4.4 installation to my
4.5 (PyQt-x11-gpl-4.5-snapshot-20090304, Ill probably recompile it
today)
when I would pass a mouse event as an emitted signal this worked,
mywidget.emit(Q
while using:
PyQt-x11-gpl-4.5-snapshot-20090304
on:
Python 2.5.2 (r252:60911, Jul 31 2008, 17:28:52)
[GCC 4.2.3 (Ubuntu 4.2.3-2ubuntu7)] on linux2
If I don't keep a persistent reference to a spacer Item I get a
segfault. This is a new event since upgrading from 4.4 to 4.
Have you tried to build them, I am using hardy, I downloaded sip 4.8 and
pyqt 4.5 snapshots, it built find without any errors. I'm not sure what
dependencies I have previously installed but it is quite trouble free
process. If you are doing it for the first time you might want to use
the 4.4 stab
>
> I'm also interested in the way to do this if one exists.
>
> Rui
>
> -Message d'origine-
> De : pyqt-boun...@riverbankcomputing.com
> [mailto:pyqt-boun...@riverbankcomputing.com]de la part de Matt Smith
> Envoyé : mardi 24 février 2009 00:04
>
When I add dock widgets to my main window if they become to large it
pushes the bottom of my screen too low. Is there a way to make them,
add as tabs when there isn't room?
thanks
mbs
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I was playing around with the SvgRenderer and I found if I did
setCurrentFrame(some_numer) I was immediately put on the last frame, and
the frame wouldn't change. The repaintNeeded() signal was still being
emitted. I am merely curious I probably will work with graphics scene
in the end but svg ou
about .parent()? should I not use .parent() to make connections?
thanks
mbs
On Thu, 2009-02-05 at 13:11 +, Phil Thompson wrote:
> On Thu, 05 Feb 2009 07:50:57 -0500, Matt Smith
> wrote:
> > You could use the palette.
> >
> >
> > MyLineEdit.palette().setCol
You could use the palette.
MyLineEdit.palette().setColor(QtGui.QPalette.Base,QtGui.QColor('red'))
mbs
On Thu, 2009-02-05 at 12:00 +, pyqt-requ...@riverbankcomputing.com
> Le 5/2/2009, "Knapp" a crit:
>
> >I have a qlineedit that I want to turn the background red when the
> >input is bad
e has been some other suggestions.)
As a final option you could change the event handlers.
mbs
On Wed, 2009-02-04 at 21:11 +0100, Knapp wrote:
> On Wed, Feb 4, 2009 at 5:40 PM, Matt Smith wrote:
> > Have you noticed that QLineEdit emits a signal textEdited which is not
> > em
Have you noticed that QLineEdit emits a signal textEdited which is not
emitted when the text is changed with setText.
http://www.riverbankcomputing.co.uk/static/Docs/PyQt4/html/qlineedit.html#textEdited
and spin boxes emit the following
http://www.riverbankcomputing.co.uk/static/Docs/PyQt4/html
It seems like your worker thread should start, I don't really like how
you've set it up, but I think it should start, so I am going to suggest
that "pow" is too much for it. Ie it is taking all of the resources
your application gets. Really what you should do in that case is use
multiprocessing.
> > Could someone explain to me, how is that possible and why it works:
> >
> > class A(QWidget):
> > def __init__(self):
> >QWidget.__init__(self)
> >
> > class B(QWidget):
> > def __init__(self):
> >QWidget.__init__(self)
> >
> > class C(A, B):
> > def __init__(self):
> >A.__init_
> Yes, this will do the trick provided that the function you connect to does
> not take to long to update. In that case the spin box jams or locks and does
> several increments of its value. This is exactly why I want to connect to
> the lineedit since this is first updated once the function you co
On Fri, 2009-01-30 at 16:00 +0100, Mads Ipsen wrote:
> Yes, this will do the trick provided that the function you connect to does
> not take to long to update. In that case the spin box jams or locks and does
> several increments of its value. This is exactly why I want to connect to
> the lineedit
On Fri, 2009-01-30 at 14:55 +0100, Mads Ipsen wrote:
> import sys
>
> from PyQt4 import QtCore, QtGui
>
> def foo(text):
> print 'valueChanged():', text
>
> if __name__ == "__main__":
> app = QtGui.QApplication(sys.argv)
> spin_box = QtGui.QSpinBox()
> line_edit = spin_bo
>
> Well, OK. My problem is that I would like to connect up to the
> textChanged(const QString &) signal emitted by the spinbox's lineedit.
> This
> signal, however, is only emitted when the edit is modified directly, not
> when it changes indirectly eg. by pressing the up/down arrows on the
> sp
On Thu, 2009-01-29 at 15:37 +, pyqt-requ...@riverbankcomputing.com
wrote:
>> I think that is the problem for two reasons. First it depends on the
>> size of the array, and Second the .ndarray part is left off of first
>> example, and doesn't change anything when I include it.
>You're just set
and because it runs in a separate process,
> there is no global interpreter lock. Way, way, way better than
> threading for a lot of cases. If it crashes, the main program doesn’t
> go down.
>
> Brian
>
>
> On 1/27/09 2:01 PM, "Matt Smith" wrote:
>
>
I made a mistake about what works and what doesn't. If I use
nimage = QtGui.QImage(total.data,w,h,QtGui.QImage.Format_Indexed8)
nimage.setColorTable(COLORTABLE)
Then there is strange wrapping that occurs if the image is not the correct size
If I use:
nimage = QtGui.QImage(total.data,w,h,QtGui.Q
I am constructing QImages from numpy arrays and I use the lines:
nimage = QtGui.QImage(total.data,w,h,QtGui.QImage.Format_Indexed8)
nimage.ndarray = total
nimage.setColorTable(COLORTABLE)
If the shape of total is (h,w) this occasionally works. This will fail
if the shape of the image is an odd si
In java they have the "SwingWorker" class and I thought of a way to
implement something similar in python. Here is the code:
http://paste.pocoo.org/show/101578/
I use this for starting long running processes. Here is an example of
how I have used it.
http://orangepalantir.org/files/threadwor
> El 19/01/2009, a las 21:20, Matt Smith escribi:
>
> > I want to be able to draw lines on an image, without modifying the
> > image. More specifically I want two images one with the lines and
> > then
> > the original image below it. Can somebody recommend
I want to be able to draw lines on an image, without modifying the
image. More specifically I want two images one with the lines and then
the original image below it. Can somebody recommend some classes,
preferable I would like to use 2 QImages, but I don't know if I can
display one on top of the
I'm working on some image analysis, and displaying the result. One of
the problems I have is grayScale. I don't mind using 8bit for display,
but is there a default grayScale color table? I suppose I could make
one, but it would be nice to import one.
Also I loaded a tiff image with 16 bit gray
Recently I've become exposed to Silverlight or the moonlight version for
linux. I was curious if there is any plans on supporting it with
QWebKit.
The main idea that I like is the possiblity of writing the code in
python to develop flash/java applet type programs, but as of now that is
not supp
> Is there a simple example of a form including a file selection widget? Would
> this be pure qt, or a kde thing?
I'm not sure what you mean by 'form' but if you want to select a file
you can use a QFileDialogue.
http://www.riverbankcomputing.co.uk/static/Docs/PyQt4/html/qfiledialog.html
Th
I'm going to throw this out there, you should exchange information via
signals/slots. When you get a cancel use terminate() slot. That will
stop it from freezing you program from the looks of it.
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> Hello i have a little problem.
> If i start the process like the sample all work:
>
> pr = QtCore.QProcess()
>
> pr.start('python /my_dir/pippo.py')
>
> but if i compile the pippo.py and i obtain an executable that i run with
> ./pippo
>
> how i have to do fur run it with qprocess?
> I have
There is a lot of leeway in connecting signals, so I was curious about
how other people are doing it. I have a widget layout similar to this.
MainWindow
Menu
CentralWidget
TabBar
StackedWidget
Graph
Calculator
InputWidget
Everything above is a widget, and the menu i
Here is a basic question because I am not so familiar with cpp. Whats
the difference between:
emit(SIGNAL("mySignal( QString )"),myQstring)
emit(SIGNAL("mySignal( const QString&)"),myQstring)
and more importantly, which one should I use?
thanks
mbs
_
I initiated a widget twice, by accident, and it caused some cpu issues
in windows when I close the program. I was wondering if there could be
an error/warning, because otherwise the program ran perfectly fine.
class MyWidget(QWidget):
def __init__(self, parent=None):
QWidget.__init__(s
Ammendium,
The suggested:
pal.setColor(QPalette.Window,QColor('white'))
Has the desired effect on a TabWidget, so I think what is happening is
that a widget doesn't paint its own background if it is in another
widget. By setting widget.window(), it will go find the widget that
does paint the ba
Okay, I made a graphing tool. Works great, somebody suggested that the
background should be white. No problem...I took the widget,
widget.palette().background().setColor(QColor('white'))
and it turned white. But that turned the background of every widget in
the main window white too. Is there
>Date: Sat, 1 Nov 2008 18:46:29 +0100
> From: "[EMAIL PROTECTED]" <[EMAIL PROTECTED]>
> Subject: [PyQt] Key return
> To: "pyqt"
> Message-ID: <[EMAIL PROTECTED]>
> Content-Type: text/plain; charset=iso-8859-1
>
> Hello
> i need that when i press the Return key, one button intercept the pression
I've worked for awhile without anything conclussive. I want a QComboBox
that opens upwards by default. Right now if I open the list it will
drop down, below its parent widget, but if I place the whole application
near the bottom of the screen it will pop upwards. I want it to pop
upwards by defa
Okay I looked at the example:
> http://pastebin.com/f16019559
and it appears that Bridge is a little bit unnecessary when you could
just emit the signal from your QThread as it is?.
So I tried to make an example following what you did;
http://pastebin.com/m192d4d3f
That brings me to a ques
I have written an app for checking my email, and it laggs when I am
downloading from the server and I am curious how to avoid this.
The general layout is
EmailWidget (Qwidget with a layout)
.ImapTool
.MessageList(QlistView)
.MailBoxList(QlistView)
def RefreshMessag
Hello I am having some trouble printing. As this is my first post I
will omit the code, but the problem is this, when I print from a
QWebView the printer crashes, if I have it write a pdf file, the pdf
file looks great, but the printer crashes when I print that file with
lpr.
On the other hand,
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