- Original Besked
Fra: Markus Feldmann feldmann_mar...@gmx.de
Til: pyqt@riverbankcomputing.com pyqt@riverbankcomputing.com
Emne: [PyQt] Re: how to show interactive Picture
Dato: 09/02/09 23:58
Mads Ipsen schrieb:
gt; Could is be that you try to paint before the window is shown
Mads Ipsen schrieb:
- Original Besked
Fra: Markus Feldmann feldmann_mar...@gmx.de
Til: pyqt@riverbankcomputing.com pyqt@riverbankcomputing.com
Emne: [PyQt] Re: how to show interactive Picture
Dato: 09/02/09 23:58
Mads Ipsen schrieb:
gt; Could is be that you try to paint before
I got the follwing Messages:
QPainter::begin: Widget painting can only begin as a result of a paintEvent
QPainter::save: Painter not active
QPainter::restore: Unbalanced save/restore
QPainter::end: Painter not active, aborted
I can't find the soultion. Please help.
David Boddie schrieb:
On Tue Feb 10 15:02:13 GMT 2009, Markus Feldmann wrote:
I think my Problem is that i have to send an envent?
Yes, you need to make a paint event happen. You can do this by calling
the update() method on the widget you want to be updated.
As you wrote i changed some of
I changed the class Qwidget -- QSrollArea and got the same Problem
as i have.
So i think that i can not paint in a scrollarea ???
###
import sys
from PyQt4 import QtCore, QtGui
import basicdrawing_rc
class
I go it. :-)
I am not sure, but maybe i have to set a Widget in
the ScrollArea, and in this Widget i may paint?
Here is my Code:
##
mport sys
from PyQt4.QtGui import QMainWindow, QDockWidget, QPainter, QAction,
QScrollArea
On Tue, 10 Feb 2009 22:42:24 +0100, Markus Feldmann wrote:
I go it. :-)
:-)
I am not sure, but maybe i have to set a Widget in
the ScrollArea, and in this Widget i may paint?
That's the idea, yes.
Here is my Code:
[...]
class ScrollArea(QScrollArea):
def __init__(self,
On Tue Feb 10 18:15:52 GMT 2009, Markus Feldmann wrote:
To compare i post the example.
There are some commands in the example i didn't understand.
I do some notes in the Code !!!
import sys
from PyQt4 import QtCore, QtGui
import basicdrawing_rc
Note that you need to have this module to
David Boddie schrieb:
Here, because you are using a QLabel to show the image, it should
automatically appear correctly in the QScrollArea.
(Aside: If you create your own custom widget (by subclassing QWidget), you
have to reimplement the sizeHint() method as well as the paintEvent() method
to
David Boddie schrieb:
import basicdrawing_rc
Note that you need to have this module to be able to show the image used
by the example. It is created by running pyrcc4 in the basicdrawing
directory like this:
pyrcc4 -o basicdrawing_rc.py basicdrawing.qrc
This causes all the resources
On Tue Feb 10 23:04:55 GMT 2009, Markus Feldmann wrote:
David Boddie schrieb:
Here, because you are using a QLabel to show the image, it should
automatically appear correctly in the QScrollArea.
(Aside: If you create your own custom widget (by subclassing QWidget),
you have to
On Wed, 11 Feb 2009 00:24:47 +0100, Markus Feldmann wrote:
Here's what might be causing the image not to appear. If, for some
reason, the basicdrawing_rc.py file was created without the image data,
this will fail, leaving you with a null pixmap.
I understand, but my Programm does not have
David Boddie schrieb:
It's not necessary to understand how to use resources initially, but you
will find them useful when you start wanting to run the program from within
different directories.
This is a really important thing, but maybe i can bypass this with some
python commands. :-)
As i
Mads Ipsen schrieb:
Could is be that you try to paint before the window is shown? You need to
call show() before you can start painting. The following snippet generates
an error similar to yours:
Hi,
This is not all of my Code. So there is a show() in my main source
code. This Source Code
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