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
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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http://www.riverbankcomputing.com/mailman/listinfo/pyqt
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
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
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
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 I
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 mel...@orangepalantir.org
wrote:
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
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
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
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 wolfg...@rohdewald.de
Subject: [PyQt] dragging a QGraphicsSvgItem
To: pyqt@riverbankcomputing.com
Message-ID: 200903180430.09934.wolfg...@rohdewald.de
Content-Type: text/plain;
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
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
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
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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PyQt mailing listPyQt@riverbankcomputing.com
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,
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
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
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
À : pyqt@riverbankcomputing.com
Objet : [PyQt] QMainWindow: adding dock
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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PyQt mailing listPyQt@riverbankcomputing.com
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
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 magick.c...@gmail.com a crit:
I have a qlineedit that I want to turn the background red when the
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 mel...@orangepalantir.org
wrote:
You could use the palette.
MyLineEdit.palette().setColor(QtGui.QPalette.Base,QtGui.QColor('red
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.
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
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 mel...@orangepalantir.org wrote:
Have you noticed that QLineEdit emits a signal textEdited which is not
emitted when
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__(self)
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_box.lineEdit()
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
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
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 mel...@orangepalantir.org wrote:
In java they have the SwingWorker class
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
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.
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 some classes,
preferable I would like
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
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
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
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 try with
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
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):
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
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
Date: Sat, 1 Nov 2008 18:46:29 +0100
From: [EMAIL PROTECTED] [EMAIL PROTECTED]
Subject: [PyQt] Key return
To: pyqt pyqt@riverbankcomputing.com
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
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
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
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
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
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