【PyQt】redirect keyboard events to QTextEdit when it has no focus ?
本帖最后由 redstoneleo 于 2013-07-21 16:19:46 编辑 when the QTextEdit doesn’t have focus ,how to redirect keyboard events to the text editor ?
as This saves the user from clicking the text editor before entering text, making the application more user-friendly.

import sys
from PyQt4.QtGui import *
from PyQt4.QtCore import *
class BoxLayout(QWidget):
    def __init__(self, parent=None):
        super(BoxLayout, self).__init__(parent)
#        self.resize(100, 300)
       
        ok = QPushButton("OK")
        cancel = QPushButton("Cancel")
        self.textEdit = QTextEdit()
        vbox = QVBoxLayout()
        vbox.addWidget(self.textEdit)
        vbox.addWidget(ok)
        vbox.addWidget(cancel)
        self.setLayout(vbox)
 
 
app = QApplication(sys.argv)
qb = BoxLayout()
qb.show()
sys.exit(app.exec_())

PyQt Python qt qt4 pyside
[解决办法]
qt有sendEvent和postEvent可以给特定的widget发送event。sendEvent要求目标widget立即处理该event，而postEvent是把该event加到消息队列中。参考https://qt-project.org/doc/qt-4.8/eventsandfilters.html的最后部分。