pyqt使用QComboBox设置
时间: 2023-11-17 21:59:32 浏览: 100
在PyQt中,可以使用QComboBox控件来创建下拉选择框。可以使用setItemText()方法来设置下拉框中的选项,使用currentIndex()方法来获取当前选中的选项的索引,使用currentText()方法来获取当前选中的选项的文本。同时,还可以使用setItemData()方法来设置选项的数据,使用itemData()方法来获取选项的数据。如果需要设置下拉框中的选项的行高,可以使用setStyleSheet()方法来设置样式表,具体可以参考引用中的代码。如果需要获取下拉框中的多列数据,可以参考引用中的代码。
相关问题
pyqt5 QComboBox 设置行距
在PyQt5中,可以使用QComboBox来创建下拉列表框。要设置行距,可以通过自定义QStyledItemDelegate来实现。
首先,需要导入相应的模块:
```python
from PyQt5.QtWidgets import QApplication, QComboBox, QStyledItemDelegate
from PyQt5.QtGui import QFontMetrics
```
然后,创建一个自定义的QStyledItemDelegate类,并重写sizeHint方法来设置行距:
```python
class CustomDelegate(QStyledItemDelegate):
def sizeHint(self, option, index):
size = super().sizeHint(option, index)
font_metrics = QFontMetrics(option.font)
height = font_metrics.height() + 10 # 设置行距为10
size.setHeight(height)
return size
```
接下来,在创建QComboBox时,将自定义的QStyledItemDelegate类作为参数传入:
```python
app = QApplication([])
combo_box = QComboBox()
delegate = CustomDelegate()
combo_box.setItemDelegate(delegate)
```
这样就可以设置QComboBox的行距了。
pyqt5 Qcombobox设置所有选项不可选择
您可以使用QComboBox的setDisabled方法将其设置为不可用,从而使所有选项不可选择。示例代码如下:
```python
from PyQt5.QtWidgets import QComboBox, QApplication
import sys
app = QApplication(sys.argv)
combo_box = QComboBox()
combo_box.addItems(["Option 1", "Option 2", "Option 3", "Option 4"])
combo_box.setDisabled(True) # 设置为不可用
combo_box.show()
sys.exit(app.exec_())
```
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