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#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 class="c"># -*- coding: utf-8 -*- class="sd">""" class="sd">ZetCode PyQt4 tutorial class="sd">In this example, we create a custom widget. class="sd">author: Jan Bodnar class="sd">website: zetcode.com class="sd">last edited: October 2011 class="sd">""" class="kn">import sys class="kn">from PyQt4 import QtGui, QtCore class="k">class Communicate(QtCore.QObject): class="n">updateBW = QtCore.pyqtSignal(int) class="k">class BurningWidget(QtGui.QWidget): class="k">def __init__(self): class="nb">super(BurningWidget, self).__init__() class="bp">self.initUI() class="k">def initUI(self): class="bp">self.setMinimumSize(1, 30) class="bp">self.value = 75 class="bp">self.num = [75, 150, 225, 300, 375, 450, 525, 600, 675] class="k">def setValue(self, value): class="bp">self.value = value class="k">def paintEvent(self, e): class="n">qp = QtGui.QPainter() class="n">qp.begin(self) class="bp">self.drawWidget(qp) class="n">qp.end() class="k">def drawWidget(self, qp): class="n">font = QtGui.QFont('Serif', 7, QtGui.QFont.Light) class="n">qp.setFont(font) class="n">size = self.size() class="n">w = size.width() class="n">h = size.height() class="n">step = int(round(w / 10.0)) class="n">till = int(((w / 750.0) * self.value)) class="n">full = int(((w / 750.0) * 700)) class="k">if self.value >= 700: class="n">qp.setPen(QtGui.QColor(255, 255, 255)) class="n">qp.setBrush(QtGui.QColor(255, 255, 184)) class="n">qp.drawRect(0, 0, full, h) class="n">qp.setPen(QtGui.QColor(255, 175, 175)) class="n">qp.setBrush(QtGui.QColor(255, 175, 175)) class="n">qp.drawRect(full, 0, till-full, h) class="k">else: class="n">qp.setPen(QtGui.QColor(255, 255, 255)) class="n">qp.setBrush(QtGui.QColor(255, 255, 184)) class="n">qp.drawRect(0, 0, till, h) class="n">pen = QtGui.QPen(QtGui.QColor(20, 20, 20), 1, class="n">QtCore.Qt.SolidLine) class="n">qp.setPen(pen) class="n">qp.setBrush(QtCore.Qt.NoBrush) class="n">qp.drawRect(0, 0, w-1, h-1) class="n">j = 0 class="k">for i in range(step, 10*step, step): class="n">qp.drawLine(i, 0, i, 5) class="n">metrics = qp.fontMetrics() class="n">fw = metrics.width(str(self.num[j])) class="n">qp.drawText(i-fw/2, h/2, str(self.num[j])) class="n">j = j + 1 class="k">class Example(QtGui.QWidget): class="k">def __init__(self): class="nb">super(Example, self).__init__() class="bp">self.initUI() class="k">def initUI(self): class="n">sld = QtGui.QSlider(QtCore.Qt.Horizontal, self) class="n">sld.setFocusPolicy(QtCore.Qt.NoFocus) class="n">sld.setRange(1, 750) class="n">sld.setValue(75) class="n">sld.setGeometry(30, 40, 150, 30) class="bp">self.c = Communicate() class="bp">self.wid = BurningWidget() class="bp">self.c.updateBW[int].connect(self.wid.setValue) class="n">sld.valueChanged[int].connect(self.changeValue) class="n">hbox = QtGui.QHBoxLayout() class="n">hbox.addWidget(self.wid) class="n">vbox = QtGui.QVBoxLayout() class="n">vbox.addStretch(1) class="n">vbox.addLayout(hbox) class="bp">self.setLayout(vbox) class="bp">self.setGeometry(300, 300, 390, 210) class="bp">self.setWindowTitle('Burning widget') class="bp">self.show() class="k">def changeValue(self, value): class="bp">self.c.updateBW.emit(value) class="bp">self.wid.repaint() class="k">def main(): class="n">app = QtGui.QApplication(sys.argv) class="n">ex = Example() class="n">sys.exit(app.exec_()) class="k">if __name__ == '__main__': class="n">main() 我们有一�?QtGui.QSlider 和一个自定制�l��g。滑块控制了自定制组件。这个组件显�C�Z��个媒介�ȝ��定w��以及剩余的容量。这里最���的值是 1�Q�最大是 750 。如果我们到�?700 �Q�我们开始画�U�色。这是用于指�C����度烧制�?/p> �口的底部。这通过一�?QtGui.QHBoxLayout �?QtGui.QVBoxLayout 实现�?/p> class="highlight-python">class BurningWidget(QtGui.QWidget): class="k">def __init__(self): class="nb">super(BurningWidget, self).__init__() QtGui.QWidget �l��g�?/p> class="highlight-python">self.setMinimumSize(1, 30) ���的大小�Q�高度）。默认的值是一点点����?/p> class="highlight-python">font = QtGui.QFont('Serif', 7, QtGui.QFont.Light) class="n">qp.setFont(font) class="highlight-python">size = self.size() class="n">w = size.width() class="n">h = size.height() class="n">step = int(round(w / 10.0)) class="n">till = int(((w / 750.0) * self.value)) class="n">full = int(((w / 750.0) * 700)) �l��g。窗口越大，�l��g会越大。反之亦然。这���是��Z��我们要计���组件的大小。参�?till 军_��了要��d�����。此值来自于滑块�l��g。这是整个区域的部分倹{��参�?full 军_��了什么时候开始绘制红色部分。注意，此处使用了��Q点运���，是�ؓ更高的精度�?/p> 三个部分。我们先�l�制黄色或红色和黄色的矩形。然后绘制垂直的�U�，主要用于分割�l��g。最后是�l�制数字�Q�用于指�C�媒介的大小�?/p> class="highlight-python">metrics = qp.fontMetrics() class="n">fw = metrics.width(str(self.num[j])) class="n">qp.drawText(i-fw/2, h/2, str(self.num[j])) 来绘制文本。我们必��要知道文本的宽度来居中�l�制�?/p> class="highlight-python">def changeValue(self, value): class="bp">self.c.updateBW.emit(value) class="bp">self.wid.repaint() 块�Ӟ�� changeValue() �Ҏ�����p��调用了。在此方法内部，我们发送了自定义的 updateBW 信号�Q��ƈ且带了一个参数。这个参数是当前滑块的倹{��这个值用于计���在 Burning �q�个�l��g中要�l�制多少。自定义的组件然后被重绘�?/p> style="text-decoration:none;" href="http://www.shnenglu.com/mirguest/" target="_blank">mirguest 2012-02-12 10:17 发表评论
 12 Feb 2012 02:16:00 GMT
     摘要: �?PyQt4 中绘�?#182;
�l�图常用于，当我们想改变一个已存在的组�Ӟ��或者是我们希望自己创徏�l��g。�ؓ了实现绘图，我们可以使用 PyQt4 中提供的 API �?�l�制一般由 paintEvent() �Ҏ��处理。绘制的代码攄����?QtGui.QPainter 对象�?begin() �?end() 之间�?
�l�制文本¶
我们可以把一�?Unicode 文本�l�制到屏�q�上�?...  阅读全文

mirguest 2012-02-12 10:16 发表评论

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()

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`QtGui.QLineEdit`¶

`QtGui.QSplitter`¶

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[Python][PyQt4]PyQt4 Widget

[Python][PyQt4]PyQt4 中的 Dialog

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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¶

PyQt4 中的事�g和信�?a class="headerlink" href="#pyqt4" title="Permalink to this headline">¶

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`QtGui.QLineEdit`¶

`QtGui.QSplitter`¶

`QtGui.QComboBox`¶

`QtGui.QInputDialog`¶

`QtGui.QColorDialog`¶

`QtGui.QFontDialog`¶

`QtGui.QFileDialog`¶