分类：ComboBox

2021
03-19

使用pyqt5 实现ComboBox的鼠标点击触发事件

一、自定义MyComboBox#MyComboBox.pyfromPyQt5.QtWidgetsimportQComboBoxfromPyQt5.QtCoreimportpyqtSignalclassMyComboBox(QComboBox):clicked=pyqtSignal()#创建一个信号defshowPopup(self):#重写showPopup函数self.clicked.emit()#发送信号super(MyComboBox,self).showPopup()#调用父类的showPopup()二、使用MyComboBox创建窗口空间#test_ui.pyself.PrintersList=My... 继续阅读 >

2021
02-21

Python tkinter之ComboBox(下拉框)的使用简介

1、ComboBox的基础属性#-*-encoding=utf-8-*-importtkinterfromtkinterimport*fromtkinterimportttkif__name__=='__main__':win=tkinter.Tk()#窗口win.title('南风丶轻语')#标题screenwidth=win.winfo_screenwidth()#屏幕宽度screenheight=win.winfo_screenheight()#屏幕高度width=600height=500x=int((screenwidth-width)/2)y=int((screenheight-height)/2)win.geo... 继续阅读 >

2021
01-14

WPF ComboBox获取当前选择值的实例详解

WPF下给ComboBox设置绑定字段时可通过如下设置：combobox.SelectedValuePath="编号";//为隐藏的一个字段combobox.DisplayMemberPath="名称";//为显示的字段获得隐藏字段方式：combobox.SelectedValue.ToString();获得显示的字段：combobox.Text补充：WPF中的ComboBox框赋值WPF中的ComboBox框不能直接赋值给实体（选择哪个信息会将框中的信息赋值给实体）order.CustomerId=cboCustomerId.Text;---错误order.CustomerId=... 继续阅读 >

2020
11-25

Winform ComboBox如何独立绘制下拉选项的字体颜色

众所周知，cbo1.ForeColor会同时改变cbo1.Text和下拉选项字体颜色。独立绘制下拉选项字体颜色，ForeColor只对cbo1.Text颜色有效的办法，示例：privatevoidcb7_DrawItem(objectsender,DrawItemEventArgse){DrawCboItems(sender,e);}privatevoidcb7_SelectedIndexChanged(objectsender,EventArgse){SetCboTextColor(sender);}privatevoidSetCboTextColor(objectsender){ComboBoxcbx=senderasComboBox;... 继续阅读 >

2020
09-24

Python 窗体(tkinter)下拉列表框(Combobox)实例

废话不多说，看代码吧！importtkinterfromtkinterimportttkdefgo(*args):#处理事件，*args表示可变参数print(comboxlist.get())#打印选中的值win=tkinter.Tk()#构造窗体comvalue=tkinter.StringVar()#窗体自带的文本，新建一个值comboxlist=ttk.Combobox(win,textvariable=comvalue)#初始化comboxlist["values"]=("1","2","3","4")comboxlist.current(0)#选择第一个comboxlist.bind("<<ComboboxSelected>>",go)#绑... 继续阅读 >