C++博客-mirguest

#ifndef MyClass_H
#define MyClass_H
class MyClass {
public:
void run();
};
#endif

#ifndef PrivateMyClass_H
#define PrivateMyClass_H
class PrivateMyClass {
public:
void canrun();
};
#endif

#include 
#include "PrivateMyClass.h"
void PrivateMyClass::canrun() {
std::cout << "Begin Can RUN?" << std::endl;
std::cout << "End Can RUN?" << std::endl;
}

#include 
#include "MyClass.h"
#include "PrivateMyClass.h"
void MyClass::run() {
std::cout << "Begin RUN" << std::endl;
PrivateMyClass pmc;
pmc.canrun();
std::cout << "End RUN" << std::endl;
}

lib:MyClass.o PrivateMyClass.o
   g++ -g -shared -o libresult.so MyClass.o PrivateMyClass.o
MyClass.o:MyClass.cpp MyClass.h
   g++ -fPIC -Wall -g -c MyClass.cpp
PrivateMyClass.o:PrivateMyClass.cpp PrivateMyClass.h
   g++ -fPIC -Wall -g -c PrivateMyClass.cpp

#include "MyClass.h"
int main() {
MyClass mc;
mc.run();
}

all:exe
   LD_LIBRARY_PATH=./:$LD_LIBRARY_PATH ./result
test1:exe
   LD_LIBRARY_PATH=../private/:$LD_LIBRARY_PATH ./result
test2:exe
   LD_LIBRARY_PATH=../private-v2/:$LD_LIBRARY_PATH ./result
exe:TestClass.o
   g++ -o result TestClass.o -L. -lresult
TestClass.o:TestClass.cpp
   g++ -c TestClass.cpp

#!/usr/bin/python
# -*- coding: utf-8 -*-
"""
ZetCode PyQt4 tutorial
In this example, we create a custom widget.
author: Jan Bodnar
website: zetcode.com
last edited: October 2011
"""
import sys
from PyQt4 import QtGui, QtCore
class Communicate(QtCore.QObject):
    updateBW = QtCore.pyqtSignal(int)
class BurningWidget(QtGui.QWidget):
    def __init__(self):
        super(BurningWidget, self).__init__()
        self.initUI()
    def initUI(self):
        self.setMinimumSize(1, 30)
        self.value = 75
        self.num = [75, 150, 225, 300, 375, 450, 525, 600, 675]
    def setValue(self, value):
        self.value = value
    def paintEvent(self, e):
        qp = QtGui.QPainter()
        qp.begin(self)
        self.drawWidget(qp)
        qp.end()
    def drawWidget(self, qp):
        font = QtGui.QFont('Serif', 7, QtGui.QFont.Light)
        qp.setFont(font)
        size = self.size()
        w = size.width()
        h = size.height()
        step = int(round(w / 10.0))
        till = int(((w / 750.0) * self.value))
        full = int(((w / 750.0) * 700))
        if self.value >= 700:
            qp.setPen(QtGui.QColor(255, 255, 255))
            qp.setBrush(QtGui.QColor(255, 255, 184))
            qp.drawRect(0, 0, full, h)
            qp.setPen(QtGui.QColor(255, 175, 175))
            qp.setBrush(QtGui.QColor(255, 175, 175))
            qp.drawRect(full, 0, till-full, h)
        else:
            qp.setPen(QtGui.QColor(255, 255, 255))
            qp.setBrush(QtGui.QColor(255, 255, 184))
            qp.drawRect(0, 0, till, h)
        pen = QtGui.QPen(QtGui.QColor(20, 20, 20), 1,
            QtCore.Qt.SolidLine)
        qp.setPen(pen)
        qp.setBrush(QtCore.Qt.NoBrush)
        qp.drawRect(0, 0, w-1, h-1)
        j = 0
        for i in range(step, 10*step, step):
            qp.drawLine(i, 0, i, 5)
            metrics = qp.fontMetrics()
            fw = metrics.width(str(self.num[j]))
            qp.drawText(i-fw/2, h/2, str(self.num[j]))
            j = j + 1
class Example(QtGui.QWidget):
    def __init__(self):
        super(Example, self).__init__()
        self.initUI()
    def initUI(self):
        sld = QtGui.QSlider(QtCore.Qt.Horizontal, self)
        sld.setFocusPolicy(QtCore.Qt.NoFocus)
        sld.setRange(1, 750)
        sld.setValue(75)
        sld.setGeometry(30, 40, 150, 30)
        self.c = Communicate()
        self.wid = BurningWidget()
        self.c.updateBW[int].connect(self.wid.setValue)
        sld.valueChanged[int].connect(self.changeValue)
        hbox = QtGui.QHBoxLayout()
        hbox.addWidget(self.wid)
        vbox = QtGui.QVBoxLayout()
        vbox.addStretch(1)
        vbox.addLayout(hbox)
        self.setLayout(vbox)
        self.setGeometry(300, 300, 390, 210)
        self.setWindowTitle('Burning widget')
        self.show()
    def changeValue(self, value):
        self.c.updateBW.emit(value)
        self.wid.repaint()
def main():
    app = QtGui.QApplication(sys.argv)
    ex = Example()
    sys.exit(app.exec_())
if __name__ == '__main__':
    main()

QtGui.QSlider
QtGui.QHBoxLayout
QtGui.QVBoxLayout
class BurningWidget(QtGui.QWidget):
    def __init__(self):
        super(BurningWidget, self).__init__()

QtGui.QWidget
self.setMinimumSize(1, 30)

font = QtGui.QFont('Serif', 7, QtGui.QFont.Light)
qp.setFont(font)

size = self.size()
w = size.width()
h = size.height()
step = int(round(w / 10.0))
till = int(((w / 750.0) * self.value))
full = int(((w / 750.0) * 700))

metrics = qp.fontMetrics()
fw = metrics.width(str(self.num[j]))
qp.drawText(i-fw/2, h/2, str(self.num[j]))

def changeValue(self, value):
    self.c.updateBW.emit(value)
    self.wid.repaint()

changeValue()
QtGui.QLineEdit
QtGui.QPushButton
#!/usr/bin/python
# -*- coding: utf-8 -*-
"""
ZetCode PyQt4 tutorial
This is a simple drag and
drop example.
author: Jan Bodnar
website: zetcode.com
last edited: December 2010
"""
import sys
from PyQt4 import QtGui
class Button(QtGui.QPushButton):
    def __init__(self, title, parent):
        super(Button, self).__init__(title, parent)
        self.setAcceptDrops(True)
    def dragEnterEvent(self, e):
        if e.mimeData().hasFormat('text/plain'):
            e.accept()
        else:
            e.ignore()
    def dropEvent(self, e):
        self.setText(e.mimeData().text())
class Example(QtGui.QWidget):
    def __init__(self):
        super(Example, self).__init__()
        self.initUI()
    def initUI(self):
        edit = QtGui.QLineEdit('', self)
        edit.setDragEnabled(True)
        edit.move(30, 65)
        button = Button("Button", self)
        button.move(190, 65)
        self.setWindowTitle('Simple Drag & Drop')
        self.setGeometry(300, 300, 300, 150)
def main():
    app = QtGui.QApplication(sys.argv)
    ex = Example()
    ex.show()
    app.exec_()
if __name__ == '__main__':
    main()

class Button(QtGui.QPushButton):
    def __init__(self, title, parent):
        super(Button, self).__init__(title, parent)

QtGui.QPushButton
QtGui.QPushButton
self.setAcceptDrops(True)

def dragEnterEvent(self, e):
    if e.mimeDate().hasFormat('text/plain'):
        e.accept()
    else:
        e.ignore()

drageEnterEvent()
def dropEvent(self, e):
    self.setText(e.mimeDate().text())

dropEvent()
edit = QtGui.QLineEdit('', self)
edit.setDragEnabled(True)

QtGui.QLineEdit
setDragEnabled()
#!/usr/bin/python
# -*- coding: utf-8 -*-
"""
ZetCode PyQt4 tutorial
In this program, we can press
on a button with a left mouse
click or drag and drop the button
with  the right mouse click.
author: Jan Bodnar
website: zetcode.com
last edited: December 2010
"""
import sys
from PyQt4 import QtGui
from PyQt4 import QtCore
class Button(QtGui.QPushButton):
    def __init__(self, title, parent):
        super(Button, self).__init__(title, parent)
    def mouseMoveEvent(self, e):
        if e.buttons() != QtCore.Qt.RightButton:
            return
        mimeData = QtCore.QMimeData()
        drag = QtGui.QDrag(self)
        drag.setMimeData(mimeData)
        drag.setHotSpot(e.pos() - self.rect().topLeft())
        dropAction = drag.start(QtCore.Qt.MoveAction)
    def mousePressEvent(self, e):
        QtGui.QPushButton.mousePressEvent(self, e)
        if e.button() == QtCore.Qt.LeftButton:
            print 'press'
class Example(QtGui.QWidget):
    def __init__(self):
        super(Example, self).__init__()
        self.initUI()
    def initUI(self):
        self.setAcceptDrops(True)
        self.button = Button('Button', self)
        self.button.move(100, 65)
        self.setWindowTitle('Click or Move')
        self.setGeometry(300, 300, 280, 150)
    def dragEnterEvent(self, e):
        e.accept()
    def dropEvent(self, e):
        position = e.pos()
        self.button.move(position)
        e.setDropAction(QtCore.Qt.MoveAction)
        e.accept()
def main():
    app = QtGui.QApplication(sys.argv)
    ex = Example()
    ex.show()
    app.exec_()
if __name__ == '__main__':
    main()

QtGui.QPushButton
class Button(QtGui.QPushButton):
    def __init__(self, title, parent):
        super(Button, self).__init__(title, parent)

QtGui.QPushButton
QtGui.QPushButton
mouseMoveEvent()
mousePressEvent()
mouseMoveEvent()
if event.buttons() != QtCore.Qt.RightButton:
    return

mimeData = QtCore.QMimeData()
drag = QtGui.QDrag(self)
drag.setMimeData(mimeData)
drag.setHotSpot(event.pos() - self.rect().topLeft())

QDrag
dropAction = drag.start(QtCore.Qt.MoveAction)

start()
def mousePressEvent(self, e):
    QtGui.QPushButton.mousePressEvent(self, e)
    if e.button() == QtCore.Qt.LeftButton:
        print 'press'

mousePressEvent()
position = e.pos()
self.button.move(position)

dropEvent()
e.setDropAction(QtCore.Qt.MoveAction)
e.accept()

QtGui.QPixmap
QtGui.QLineEdit
QtGui.QSplitter
QtGui.QComboBox
QtGui.QPixmap
QtGui.QPixmap
QtGui.QPixmap
#!/usr/bin/python
# -*- coding: utf-8 -*-
"""
ZetCode PyQt4 tutorial
In this example, we dispay an image
on the window.
author: Jan Bodnar
website: zetcode.com
last edited: September 2011
"""
import sys
from PyQt4 import QtGui, QtCore
class Example(QtGui.QWidget):
    def __init__(self):
        super(Example, self).__init__()
        self.initUI()
    def initUI(self):
        hbox = QtGui.QHBoxLayout(self)
        pixmap = QtGui.QPixmap("redrock.png")
        lbl = QtGui.QLabel(self)
        lbl.setPixmap(pixmap)
        hbox.addWidget(lbl)
        self.setLayout(hbox)
        self.move(300, 200)
        self.setWindowTitle('Red Rock')
        self.show()
def main():
    app = QtGui.QApplication(sys.argv)
    ex = Example()
    sys.exit(app.exec_())
if __name__ == '__main__':
    main()

pixmap = QtGui.QPixmap("redrock.png")

QtGui.QPixmap
lbl = QtGui.QLabel(self)
lbl.setPixmap(pixmap)

QtGui.QLabel
QtGui.QLineEdit
QtGui.QLineEdit
#!/usr/bin/python
# -*- coding: utf-8 -*-
"""
ZetCode PyQt4 tutorial
This example shows text which
is entered in a QtGui.QLineEdit
in a QtGui.QLabel widget.
author: Jan Bodnar
website: zetcode.com
last edited: August 2011
"""
import sys
from PyQt4 import QtGui, QtCore
class Example(QtGui.QWidget):
    def __init__(self):
        super(Example, self).__init__()
        self.initUI()
    def initUI(self):
        self.lbl = QtGui.QLabel(self)
        qle = QtGui.QLineEdit(self)
        qle.move(60, 100)
        self.lbl.move(60, 40)
        qle.textChanged[str].connect(self.onChanged)
        self.setGeometry(300, 300, 280, 170)
        self.setWindowTitle('QtGui.QLineEdit')
        self.show()
    def onChanged(self, text):
        self.lbl.setText(text)
        self.lbl.adjustSize()
def main():
    app = QtGui.QApplication(sys.argv)
    ex = Example()
    sys.exit(app.exec_())
if __name__ == '__main__':
    main()

qle = QtGui.QLineEdit(self)

QtGui.QLineEdit
qle.textChanged[str].connect(self.onChanged)

onChanged()
def onChanged(self, text):
    self.lbl.setText(text)
    self.lbl.adjustSize()

onChanged()
adjustSize()
QtGui.QSplitter
QtGui.QSplitter
QtGui.QFrame
#!/usr/bin/python
# -*- coding: utf-8 -*-
"""
ZetCode PyQt4 tutorial
This example shows
how to use QtGui.QSplitter widget.
author: Jan Bodnar
website: zetcode.com
last edited: September 2011
"""
import sys
from PyQt4 import QtGui, QtCore
class Example(QtGui.QWidget):
    def __init__(self):
        super(Example, self).__init__()
        self.initUI()
    def initUI(self):
        hbox = QtGui.QHBoxLayout(self)
        topleft = QtGui.QFrame(self)
        topleft.setFrameShape(QtGui.QFrame.StyledPanel)
        topright = QtGui.QFrame(self)
        topright.setFrameShape(QtGui.QFrame.StyledPanel)
        bottom = QtGui.QFrame(self)
        bottom.setFrameShape(QtGui.QFrame.StyledPanel)
        splitter1 = QtGui.QSplitter(QtCore.Qt.Horizontal)
        splitter1.addWidget(topleft)
        splitter1.addWidget(topright)
        splitter2 = QtGui.QSplitter(QtCore.Qt.Vertical)
        splitter2.addWidget(splitter1)
        splitter2.addWidget(bottom)
        hbox.addWidget(splitter2)
        self.setLayout(hbox)
        QtGui.QApplication.setStyle(QtGui.QStyleFactory.create('Cleanlooks'))
        self.setGeometry(300, 300, 300, 200)
        self.setWindowTitle('QtGui.QSplitter')
        self.show()
def main():
    app = QtGui.QApplication(sys.argv)
    ex = Example()
    sys.exit(app.exec_())
if __name__ == '__main__':
    main()

topleft = QtGui.QFrame(self)
topleft.setFrameShape(QtGui.QFrame.StyledPanel)

splitter1 = QtGui.QSplitter(QtCore.Qt.Horizontal)
splitter1.addWidget(topleft)
splitter1.addWidget(topright)

QtGui.QSplitter
splitter2 = QtGui.QSplitter(QtCore.Qt.Vertical)
splitter2.addWidget(splitter1)

QtGui.QApplication.setStyle(QtGui.QStyleFactory.create('Cleanlooks'))

QtGui.QComboBox
QtGui.QComboBox
#!/usr/bin/python
# -*- coding: utf-8 -*-
"""
ZetCode PyQt4 tutorial
This example shows
how to use QtGui.QComboBox widget.
author: Jan Bodnar
website: zetcode.com
last edited: September 2011
"""
import sys
from PyQt4 import QtGui, QtCore
class Example(QtGui.QWidget):
    def __init__(self):
        super(Example, self).__init__()
        self.initUI()
    def initUI(self):
        self.lbl = QtGui.QLabel("Ubuntu", self)
        combo = QtGui.QComboBox(self)
        combo.addItem("Ubuntu")
        combo.addItem("Mandriva")
        combo.addItem("Fedora")
        combo.addItem("Red Hat")
        combo.addItem("Gentoo")
        combo.move(50, 50)
        self.lbl.move(50, 150)
        combo.activated[str].connect(self.onActivated)
        self.setGeometry(300, 300, 300, 200)
        self.setWindowTitle('QtGui.QComboBox')
        self.show()
    def onActivated(self, text):
        self.lbl.setText(text)
        self.lbl.adjustSize()
def main():
    app = QtGui.QApplication(sys.argv)
    ex = Example()
    sys.exit(app.exec_())
if __name__ == '__main__':
    main()

QtGui.QComboBox
QtGui.QLable
combo = QtGui.QComboBox(self)
combo.addItem("Ubuntu")
combo.addItem("Mandriva")
combo.addItem("Fedora")
combo.addItem("Red Hat")
combo.addItem("Gentoo")

QtGui.QComboBox
combo.activated[str].connect(self.onActivated)

onActivated()
def onActivated(self, text):
    self.lbl.setText(text)
    self.lbl.adjustSize()

QtGui.QInputDialog
QtGui.QInputDialog
#!/usr/bin/python
# -*- coding: utf-8 -*-
"""
ZetCode PyQt4 tutorial
In this example, we receive data from
a QtGui.QInputDialog dialog.
author: Jan Bodnar
website: zetcode.com
last edited: October 2011
"""
import sys
from PyQt4 import QtGui
class Example(QtGui.QWidget):
    def __init__(self):
        super(Example, self).__init__()
        self.initUI()
    def initUI(self):
        self.btn = QtGui.QPushButton('Dialog', self)
        self.btn.move(20, 20)
        self.btn.clicked.connect(self.showDialog)
        self.le = QtGui.QLineEdit(self)
        self.le.move(130, 22)
        self.setGeometry(300, 300, 290, 150)
        self.setWindowTitle('Input dialog')
        self.show()
    def showDialog(self):
        text, ok = QtGui.QInputDialog.getText(self, 'Input Dialog',
            'Enter your name:')
        if ok:
            self.le.setText(str(text))
def main():
    app = QtGui.QApplication(sys.argv)
    ex = Example()
    sys.exit(app.exec_())
if __name__ == '__main__':
    main()

text, ok = QtGui.QInputDialog.getText(self, 'Input Dialog',
    'Enter your name:')

true
false
if ok:
    self.le.setText(str(text))

QtGui.QColorDialog
QtGui.QColorDialog
#!/usr/bin/python
# -*- coding: utf-8 -*-
"""
ZetCode PyQt4 tutorial
In this example, we select a color value
from the QtGui.QColorDialog and change the background
color of a QtGui.QFrame widget.
author: Jan Bodnar
website: zetcode.com
last edited: October 2011
"""
import sys
from PyQt4 import QtGui
class Example(QtGui.QWidget):
    def __init__(self):
        super(Example, self).__init__()
        self.initUI()
    def initUI(self):
        col = QtGui.QColor(0, 0, 0)
        self.btn = QtGui.QPushButton('Dialog', self)
        self.btn.move(20, 20)
        self.btn.clicked.connect(self.showDialog)
        self.frm = QtGui.QFrame(self)
        self.frm.setStyleSheet("QWidget { background-color: %s }"
            % col.name())
        self.frm.setGeometry(130, 22, 100, 100)
        self.setGeometry(300, 300, 250, 180)
        self.setWindowTitle('Color dialog')
        self.show()
    def showDialog(self):
        col = QtGui.QColorDialog.getColor()
        if col.isValid():
            self.frm.setStyleSheet("QWidget { background-color: %s }"
                % col.name())
def main():
    app = QtGui.QApplication(sys.argv)
    ex = Example()
    sys.exit(app.exec_())
if __name__ == '__main__':
    main()

QtGui.QFrame
QtGui.QColorDialog
col = QtGui.QColor(0, 0, 0)

QtGui.QFrame
col = QtGui.QColorDialog.getColor()

QtGui.QColorDialog
if col.isValid():
    self.frm.setStyleSheet("QWidget { background-color: %s }"
        % col.name())

QtGui.QFontDialog
QtGui.QFontDialog
#!/usr/bin/python
# -*- coding: utf-8 -*-
"""
ZetCode PyQt4 tutorial
In this example, we select a font name
and change the font of a label.
author: Jan Bodnar
website: zetcode.com
last edited: October 2011
"""
import sys
from PyQt4 import QtGui
class Example(QtGui.QWidget):
    def __init__(self):
        super(Example, self).__init__()
        self.initUI()
    def initUI(self):
        vbox = QtGui.QVBoxLayout()
        btn = QtGui.QPushButton('Dialog', self)
        btn.setSizePolicy(QtGui.QSizePolicy.Fixed,
            QtGui.QSizePolicy.Fixed)
        btn.move(20, 20)
        vbox.addWidget(btn)
        btn.clicked.connect(self.showDialog)
        self.lbl = QtGui.QLabel('Knowledge only matters', self)
        self.lbl.move(130, 20)
        vbox.addWidget(self.lbl)
        self.setLayout(vbox)
        self.setGeometry(300, 300, 250, 180)
        self.setWindowTitle('Font dialog')
        self.show()
    def showDialog(self):
        font, ok = QtGui.QFontDialog.getFont()
        if ok:
            self.lbl.setFont(font)
def main():
    app = QtGui.QApplication(sys.argv)
    ex = Example()
    sys.exit(app.exec_())
if __name__ == '__main__':
    main()

QtGui.QFontDialog
font, ok = QtGui.QFontDialog.getFont()

getFont()
True
False
if ok:
    self.label.setFont(font)

QtGui.QFileDialog
QtGui.QFileDialog
#!/usr/bin/python
# -*- coding: utf-8 -*-
"""
ZetCode PyQt4 tutorial
In this example, we select a file with a
QtGui.QFileDialog and display its contents
in a QtGui.QTextEdit.
author: Jan Bodnar
website: zetcode.com
last edited: October 2011
"""
import sys
from PyQt4 import QtGui
class Example(QtGui.QMainWindow):
    def __init__(self):
        super(Example, self).__init__()
        self.initUI()
    def initUI(self):
        self.textEdit = QtGui.QTextEdit()
        self.setCentralWidget(self.textEdit)
        self.statusBar()
        openFile = QtGui.QAction(QtGui.QIcon('open.png'), 'Open', self)
        openFile.setShortcut('Ctrl+O')
        openFile.setStatusTip('Open new File')
        openFile.triggered.connect(self.showDialog)
        menubar = self.menuBar()
        fileMenu = menubar.addMenu('&File')
        fileMenu.addAction(openFile)
        self.setGeometry(300, 300, 350, 300)
        self.setWindowTitle('File dialog')
        self.show()
    def showDialog(self):
        fname = QtGui.QFileDialog.getOpenFileName(self, 'Open file',
                '/home')
        f = open(fname, 'r')
        with f:
            data = f.read()
            self.textEdit.setText(data)
def main():
    app = QtGui.QApplication(sys.argv)
    ex = Example()
    sys.exit(app.exec_())
if __name__ == '__main__':
    main()

QtGui.QFileDialog
class Example(QtGui.QMainWindow):
    def __init__(self):
        super(Example, self).__init__()

QtGui.QMainWindow
fname = QtGui.QFileDialog.getOpenFileName(self, 'Open file',
    '/home')

QtGui.QFileDialog
getOpenFileName()
*
f = open(fname, 'r')
with f:
    data = f.read()
    self.textEdit.setText(data)

exec_()
exec_()
QtCore.QObject.connect(button, QtCore.SIGNAL('clicked()'), self.onClicked)

button.clicked.connect(self.onClicked)

#!/usr/bin/python
# -*- coding: utf-8 -*-
"""
ZetCode PyQt4 tutorial
In this example, we connect a signal
of a QtGui.QSlider to a slot
of a QtGui.QLCDNumber.
author: Jan Bodnar
website: zetcode.com
last edited: October 2011
"""
import sys
from PyQt4 import QtGui, QtCore
class Example(QtGui.QWidget):
    def __init__(self):
        super(Example, self).__init__()
        self.initUI()
    def initUI(self):
        lcd = QtGui.QLCDNumber(self)
        sld = QtGui.QSlider(QtCore.Qt.Horizontal, self)
        vbox = QtGui.QVBoxLayout()
        vbox.addWidget(lcd)
        vbox.addWidget(sld)
        self.setLayout(vbox)
        sld.valueChanged.connect(lcd.display)
        self.setGeometry(300, 300, 250, 150)
        self.setWindowTitle('Signal & slot')
        self.show()
def main():
    app = QtGui.QApplication(sys.argv)
    ex = Example()
    sys.exit(app.exec_())
if __name__ == '__main__':
    main()

QtGui.QLCDNumber
QtGui.QSlider
sld.valueChanged.connect(lcd.display)

valueChanged
display
#!/usr/bin/python
# -*- coding: utf-8 -*-
"""
ZetCode PyQt4 tutorial
In this example, we reimplement an
event handler.
author: Jan Bodnar
website: zetcode.com
last edited: October 2011
"""
import sys
from PyQt4 import QtGui, QtCore
class Example(QtGui.QWidget):
    def __init__(self):
        super(Example, self).__init__()
        self.initUI()
    def initUI(self):
        self.setGeometry(300, 300, 250, 150)
        self.setWindowTitle('Event handler')
        self.show()
    def keyPressEvent(self, e):
        if e.key() == QtCore.Qt.Key_Escape:
            self.close()
def main():
    app = QtGui.QApplication(sys.argv)
    ex = Example()
    sys.exit(app.exec_())
if __name__ == '__main__':
    main()

keyPressEvent()
def keyPressEvent(self, e):
    if e.key() == QtCore.Qt.Key_Escape:
        self.close()

sender()
#!/usr/bin/python
# -*- coding: utf-8 -*-
"""
ZetCode PyQt4 tutorial
In this example, we determine the event sender
object.
author: Jan Bodnar
website: zetcode.com
last edited: October 2011
"""
import sys
from PyQt4 import QtGui, QtCore
class Example(QtGui.QMainWindow):
    def __init__(self):
        super(Example, self).__init__()
        self.initUI()
    def initUI(self):
        btn1 = QtGui.QPushButton("Button 1", self)
        btn1.move(30, 50)
        btn2 = QtGui.QPushButton("Button 2", self)
        btn2.move(150, 50)
        btn1.clicked.connect(self.buttonClicked)
        btn2.clicked.connect(self.buttonClicked)
        self.statusBar()
        self.setGeometry(300, 300, 290, 150)
        self.setWindowTitle('Event sender')
        self.show()
    def buttonClicked(self):
        sender = self.sender()
        self.statusBar().showMessage(sender.text() + ' was pressed')
def main():
    app = QtGui.QApplication(sys.argv)
    ex = Example()
    sys.exit(app.exec_())
if __name__ == '__main__':
    main()

buttonClicked()
sender()
btn1.clicked.connect(self.buttonClicked)
btn2.clicked.connect(self.buttonClicked)

def buttonClicked(self):
    sender = self.sender()
    self.statusBar().showMessange(sender.text() + " was pressed")

sender()
QtCore.QObject
clicked()
#!/usr/bin/python
# -*- coding: utf-8 -*-
"""
ZetCode PyQt4 tutorial
In this example, we show how to emit a
custom signal.
author: Jan Bodnar
website: zetcode.com
last edited: October 2011
"""
import sys
from PyQt4 import QtGui, QtCore
class Communicate(QtCore.QObject):
    closeApp = QtCore.pyqtSignal()
class Example(QtGui.QMainWindow):
    def __init__(self):
        super(Example, self).__init__()
        self.initUI()
    def initUI(self):
        self.c = Communicate()
        self.c.closeApp.connect(self.close)
        self.setGeometry(300, 300, 290, 150)
        self.setWindowTitle('Emit signal')
        self.show()
    def mousePressEvent(self, event):
        self.c.closeApp.emit()
def main():
    app = QtGui.QApplication(sys.argv)
    ex = Example()
    sys.exit(app.exec_())
if __name__ == '__main__':
    main()

QtGui.QMainWindow
close()
class Communicate(QtCore.QObject):
    closeApp = QtCore.pyqtSignal()

QtCore.QObject
self.c = Communicate()
self.c.closeApp.connect(self.close)

Communicate
QtGui.QMainWindow
close()
def mousePressEvent(self, event):
    self.c.closeApp.emit()

C++博客-mirguest

关于隐藏实现代码

关于隐藏实现代码

定义接口

实现隐藏代码

封装隐藏代码

编译生成动态库

给出头文件和动态库

测试

【笔记】设计原本中作者关于设计的建议

[Python][PyQt4]PyQt4 中的俄罗斯方块

[Python][PyQt4]在 PyQt4 中定制组件

在 PyQt4 中定制组件¶

Burning widget¶

[Python][PyQt4]在 PyQt4 中绘图

[Python][PyQt4]在 PyQt4 中 drag 和 drop

在 PyQt4 中 drag 和 drop¶

简单的 Drag 和 Drop¶

拖拽一个按钮组件¶

[Python][PyQt4]PyQt4 Widget II

PyQt4 Widget II¶

`QtGui.QPixmap`¶

`QtGui.QLineEdit`¶

`QtGui.QSplitter`¶

`QtGui.QComboBox`¶

[Python][PyQt4]PyQt4 Widget

[Python][PyQt4]PyQt4 中的 Dialog

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`QtGui.QFontDialog`¶

`QtGui.QFileDialog`¶

[Python][PyQt4]PyQt4 中的事件和信号

PyQt4 中的事件和信号¶

事件¶

新的 API¶

信号与槽¶

重新实现事件处理句柄¶

事件发送者¶

发送信号¶

C++博客-mirguest

关于隐藏实现代码

关于隐藏实现代码

定义接口

实现隐藏代码

封装隐藏代码

编译生成动态库

给出头文件和动态库

测试

【笔记】设计原本中作者关于设计的建议

[Python][PyQt4]PyQt4 中的俄罗斯方块

[Python][PyQt4]在 PyQt4 中定制组件

在 PyQt4 中定制组件¶

Burning widget¶

[Python][PyQt4]在 PyQt4 中绘图

[Python][PyQt4]在 PyQt4 中 drag 和 drop

在 PyQt4 中 drag 和 drop¶

简单的 Drag 和 Drop¶

拖拽一个按钮组件¶

[Python][PyQt4]PyQt4 Widget II

PyQt4 Widget II¶

QtGui.QPixmap¶

QtGui.QLineEdit¶

QtGui.QSplitter¶

QtGui.QComboBox¶

[Python][PyQt4]PyQt4 Widget

[Python][PyQt4]PyQt4 中的 Dialog

PyQt4 中的 Dialog¶

QtGui.QInputDialog¶

QtGui.QColorDialog¶

QtGui.QFontDialog¶

QtGui.QFileDialog¶

[Python][PyQt4]PyQt4 中的事件和信号

PyQt4 中的事件和信号¶

事件¶

新的 API¶

信号与槽¶

重新实现事件处理句柄¶

事件发送者¶

发送信号¶

`QtGui.QPixmap`¶

`QtGui.QLineEdit`¶

`QtGui.QSplitter`¶

`QtGui.QComboBox`¶

`QtGui.QInputDialog`¶

`QtGui.QColorDialog`¶

`QtGui.QFontDialog`¶

`QtGui.QFileDialog`¶