Hi All,
i am programming a MDI Application where a Window in the
workspace shall work as a Map Program. Therefore i want
to show a Picture which is parted in many small hexagons.
This hexagons can be selected with the mouse.
Ok, i started first to set up the picture, but got
trouble. Here are some Messages:
StdErr: QPainter::begin: Widget painting can only begin as a result of a
paintEvent
QPainter::begin: Painter already active
QPainter::setRenderHint: Painter must be active to set rendering hints
QPainter::save: Painter not active
QPainter::restore: Unbalanced save/restore
QPainter::end: Painter not active, aborted
So i think i do something wrong to show my picture.
How can i show the picture correctly ?
Regards Markus
Here it comes a part of my Programm:
#!/usr/bin/env python
#
# reisehelfer.py
#
import sys
from PyQt4.QtGui import QMainWindow, QDockWidget, QPainter, QAction,
QScrollArea
from PyQt4.QtGui import QPaintEvent, QPixmap, QPen, QBrush
from PyQt4 import QtCore
class ReiseHelfer(QMainWindow):
def __init__(self, parent=None):
QMainWindow.__init__(self, parent)
self.setAttribute(QtCore.Qt.WA_DeleteOnClose)
self.createActions()
self.createMenus()
self.createStatusBar()
self.setWindowTitle(self.tr("Reisehelfer"))
self.scrollarea = QScrollArea()
self.setCentralWidget(self.scrollarea)
self.pen = QPen()
self.brush = QBrush()
self.pixmap = QPixmap()
self.pixmap.load(":/media/images/aventurien.jpg")
self.readSettings()
self.update()
def createActions(self):
self.openMapAct = QAction(self.tr("&Open Map"), self)
self.openMapAct.setShortcut(self.tr("Ctrl+O"))
self.connect(self.openMapAct, QtCore.SIGNAL("triggered()"),
self.loadMap)
self.exitAct = QAction(self.tr("E&xit"), self)
self.exitAct.setShortcut(self.tr("Ctrl+Q"))
self.connect(self.exitAct, QtCore.SIGNAL("triggered()"), self,
QtCore.SLOT("close()"))
def createMenus(self):
...
def createStatusBar(self):
...
def loadMap(self):
pass
def paintEvent(self, event):
painter = QPainter(self.scrollarea)
painter.begin(self)
painter.setPen(self.pen)
painter.setBrush(self.brush)
painter.setRenderHint(QPainter.Antialiasing, True)
painter.save()
painter.drawPixmap(10, 10, self.pixmap)
painter.restore()
painter.end()
def readSettings(self):
...
def writeSettings(self):
...
def closeEvent(self, event):
self.writeSettings()
event.accept()
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