Hi,
It looks like you have several things wrong:
On Sep 17, 9:29 am, luca72 <[EMAIL PROTECTED]> wrote:
> class Form(QWidget, Ui_Form):
> [...]
>
> @pyqtSignature("")
> def on_pushButton_clicked(self):
> """
> Slot documentation goes here.
> """
> # TODO: not implemented yet
> #raise "Not implemented yet"
> #gr = QtGui.QPainter()
> picture = QtGui.QPicture()
> gr = QtGui.QPainter()
> gr.begin(picture)
> gr.setPen(QtGui.QPen(QtCore.Qt.black, 1, QtCore.Qt.SolidLine))
> gr.drawLine(70,100,150,100)
> gr.end()
> picture.save('dis.pic')
> self.frame.update()
Normally, you don't paint inside a slot. You paint inside the
paintEvent() method which is called automatically by Qt when an area
of your widget needs to be repainted.
> from PyQt4.QtGui import QWidget
> from PyQt4.QtCore import pyqtSignature
> from PyQt4 import *
>
> class PictureFrame(QtGui.QFrame):
>
> def __init__(self, parent = None):
> QFrame.__init__(self, parent)
> picture = QtGui.QPicture()
>
> def paintEvent(self, event):
> picture.load('dis.pic')
> gr = QtGui.QPainter()
> gr.begin(self.frame)
> gr.drawPicture(0, 0, picture)
> gr.end()
Don't load a picture inside a paintevent. Loading is an expensive
process, you don't want to repeat it all the time.
Second, you should check that your picture was loaded. Sometimes, it's
a file problem. Check the size of your picture for example.
Third, I think you should have :
gr.begin( self )
Else, the painter is not painting on your widget.
Hope that helps.
PHilippe
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