Python 在QToolButton上显示双色字体
我想要一个按钮,显示两种颜色的文本。我尝试了以下方法:Python 在QToolButton上显示双色字体,python,pyqt4,qtoolbutton,Python,Pyqt4,Qtoolbutton,我想要一个按钮,显示两种颜色的文本。我尝试了以下方法: import sys from PyQt4 import QtCore,QtGui class Example(QtGui.QWidget): def __init__(self): super(Example, self).__init__() self.initUI() def clicked(self,name): self.drop_btns_hide
import sys
from PyQt4 import QtCore,QtGui
class Example(QtGui.QWidget):
def __init__(self):
super(Example, self).__init__()
self.initUI()
def clicked(self,name):
self.drop_btns_hide(self.dropdown)
print("Clicked on {}".format(name))
def initUI(self):
QtGui.QToolTip.setFont(QtGui.QFont('SansSerif', 10))
self.phslst = ['abc','def','ghi','jkl']
self.setToolTip('This is a <b>QWidget</b> widget')
btn = QtGui.QToolButton(self)
btn.setToolTip('This is a <b>QPushButton</b> widget')
btn.resize(btn.sizeHint())
btn.move(50, 50)
text = QtGui.QTextDocument()
text.setHtml('<b>'
'<font color="#0085C8" size="6" face="Avenir">'
'Select Phase'
'</font>'
'<font color="#d8d8d8" size="6">'
'▼'
'</font>'
'</b>')
pixmap = QtGui.QPixmap(text.size().width(), text.size().height())
pixmap.fill(QtCore.Qt.transparent)
painter = QtGui.QPainter(pixmap)
text.drawContents(painter, QtCore.QRectF(pixmap.rect()))
icon = QtGui.QIcon(pixmap)
self.select_icon = icon
btn.setIcon(icon)
btn.setIconSize(pixmap.size())
btnA = QtGui.QPushButton('Test', self)
btnA.setToolTip('This is a <b>QPushButton</b> widget')
btnA.resize(btnA.sizeHint())
btnA.move(10, 100)
self.setGeometry(300, 300, 250, 250)
self.setWindowTitle('Tooltips')
self.show()
def main():
app = QtGui.QApplication(sys.argv)
ex = Example()
sys.exit(app.exec_())
if __name__ == '__main__':
main()
我不明白为什么。由于效率原因,QPaint方法所做的是累积指令,因此不会立即执行。这就是在您的案例中发生的情况,因为QPainter仍然处于活动状态,并且具有QPixmap的属性,这就是为什么会出现错误,因此在本例中,解决方案是调用end()方法:
text=QtGui.QTextDocument()
text.setHtml(“”
''
“选择阶段”
''
''
'▼'
''
'')
pixmap=QtGui.QPixmap(text.size().toSize())
pixmap.fill(QtCore.Qt.transparent)
painter=QtGui.QPainter(pixmap)
text.drawContents(painter,QtCore.QRectF(pixmap.rect()))
(完)#
QPaintDevice: Cannot destroy paint device that is being painted
fish: “python QToolButton.py” terminated by signal SIGSEGV (Address boundary error)