QTableWidget 当前选择更改信号 [英] QTableWidget Current Selection Change Signal
问题描述
当前选择更改时 QTableWidget 的信号是什么,我如何为其分配插槽?
What's the signal of a QTableWidget when the current selection changes and how can I assign a slot to it?
推荐答案
您想要 itemSelectionChanged
信号:
You want the itemSelectionChanged
signal:
This signal is emitted whenever the selection changes.
This signal is emitted whenever the selection changes.
您可以通过执行以下操作来使用它:
You can use this by doing something like this:
self.itemSelectionChanged.connect(self.print_row)
这将在每次选择更改时调用 self.print_row
(这是您创建的函数).
This will call self.print_row
(which is a function you create) every time the selection changes.
一个非常基本的例子:
import sys
from PyQt4 import QtGui, QtCore
lista = ['r1c1', 'r1c2', 'r1c3']
listb = ['r2c1', 'r2c2', 'r1c3']
listc = ['r3c1', 'r3c2', 'r3c3']
mystruct = {'row1':lista, 'row2':listb, 'row3':listc}
class MyTable(QtGui.QTableWidget):
def __init__(self, thestruct, *args):
QtGui.QTableWidget.__init__(self, *args)
self.data = thestruct
n = 0
for key in self.data:
m = 0
for item in self.data[key]:
newitem = QtGui.QTableWidgetItem(item)
self.setItem(m, n, newitem)
m += 1
n += 1
self.itemSelectionChanged.connect(self.print_row)
def print_row(self):
items = self.selectedItems()
print(str(items[0].text()))
def main(args):
app = QtGui.QApplication(args)
table = MyTable(mystruct, 3, 3)
table.show()
sys.exit(app.exec_())
if __name__=="__main__":
main(sys.argv)
<小时>
这会创建一个这样的表:
This creates a table like this:
当您选择任何单元格时,它会打印出单元格中的文本.请注意,此打印功能假定您一次只能进行一个选择.selectedItems()
函数返回所选项目的列表.在这个例子中我只使用了第一个索引.
When you select any of the cells, it will print out the text in the cell. As a note, this print function assumes that you only make one selection at a time. The selectedItems()
function returns a list of selected items. I am only using the first index in this example.
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