[PyQt] Pyqt, repainting on a customize widget.

[Entity Reborn]

You need to import QtCore. Also, it's QApplication, not Qapplication.

On Mar 26, 2011, at 11:41 AM, jp984 <jp984 at costarricense.cr> wrote:

>
> this is what i get when i try:
> QtCore.Qapplication.ProcessEvents()
> global name 'QtCore' is not defined
>
>
> jp984 wrote:
>>
>> Hello there.
>>
>> Im learning pyqt using  "rapid gui programing with pyqt" book, Im making a
>> change on the chapter's 11 exercise solution given by the book. I want the
>> widget to change the focus on each rectangle automatically every half of a
>> second. So i replace the mouse and key event handlers for a method to do
>> the work.
>>
>> It looks .update() method doest work properly,the widget shows the widget
>> at the initial state and then it isn't updated  can any of you guys give
>> me a hint:
>>
>> The move method does change the focus on each rectangle (x,y)the grid.
>>
>> this is the code:
>>
>>
>> class CountersWidget(QWidget):
>>
>>    def __init__(self, parent=None):
>>        super(CountersWidget, self).__init__(parent)
>>        self.setSizePolicy(QSizePolicy(QSizePolicy.Expanding,
>>                                       QSizePolicy.Expanding))
>>        self.grid = [[BLANK] * 3 for i in range(3)]
>>        self.selected = [0, 0]
>>        self.setMinimumSize(self.minimumSizeHint())
>>
>>
>>    def sizeHint(self):
>>        return QSize(200, 200)
>>
>>
>>    def minimumSizeHint(self):
>>        return QSize(100, 100)
>>
>>    def move(self):
>>         if self.selected[0] == 2:
>>                self.selected=([0,self.selected[1]+1] if not
>> self.selected[1]==2
>>                                else [0,0])
>>         else:
>>                self.selected = [self.selected[0]+1, self.selected[1]]
>>         x, y = self.selected
>>         cell= self.grid[x][y]
>>         print (self.selected)
>>         self.grid[x][y]=cell
>>         self.update()
>>         self.emit(SIGNAL("movido"))
>>
>>    def delay(self):
>>        time.sleep(0.5)
>>        self.emit(SIGNAL("delay"))
>>
>>
>>    def paintEvent(self, event=None):
>>        painter = QPainter(self)
>>        painter.setRenderHint(QPainter.Antialiasing, True)
>>        xOffset = self.width() / 3
>>        yOffset = self.height() / 3
>>        for x in range(3):
>>            for y in range(3):
>>                cell = self.grid[x][y]
>>                rect = (QRectF(x * xOffset, y * yOffset,
>>                        xOffset, yOffset).adjusted(0.5, 0.5, -0.5, -0.5))
>>                color = None
>>
>>                if [x, y] == self.selected:
>>                    painter.setPen(QPen(Qt.blue, 3))
>>                else:
>>                    painter.setPen(Qt.black)
>>                painter.drawRect(rect)
>>                QTimer.singleShot(0,self.delay)
>>
>> if __name__ == "__main__":
>>    import sys
>>    app = QApplication(sys.argv)
>>    form = CountersWidget()
>>    form.setWindowTitle("Counters")
>>    form.show()
>>    app.exec_()
>>
>>
>>
>
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