SendMessage操作Combobox/DropDownList控件一些常用的函数整理

示例：

Gui,6:Destroy
Gui,6:+AlwaysOnTop
;如果ListBox控件加了AltSubmit属性，触发点击事件时v标签接收的只有行号非其内容。
;设置一个g标签GuiControl_Gui接收点击事件，v标签SetCB承载控件的内容与标识
Gui,6:Add,ComboBox, h150 w250 gGuiControl_Gui vSetCB HWNDhcb,item1|item2|item|item3|item4|item5
;Gui,6:Add,DropDownList, h150 w250 gGuiControl_Gui vSetCB HWNDhcb,item1|item2|item|item3|item4|item5
Gui,6:Add,Button,xm y+10 gGuiControl_Gui voption_0,展开
Gui,6:Add,Button,x+10 yp gGuiControl_Gui voption_1,选择[item]项
Gui,6:Add,Button,x+10 yp gGuiControl_Gui voption_2,追加一行
Gui,6:Add,Button,xm y+10 gGuiControl_Gui voption_3,修改第4行内容
Gui,6:Add,Button,x+10 yp gGuiControl_Gui voption_4,获取第5行内容
Gui,6:Add,Button,x+10 yp gGuiControl_Gui voption_5,第3行处插入1行
Gui,6:Add,Button,xm y+10 gGuiControl_Gui voption_6,获取[item5]在列表中行号
Gui,6:Add,Button,x+10 yp gGuiControl_Gui voption_7,获取高亮选中行行号
Gui,6:Add,Button,xm y+10 gGuiControl_Gui voption_8,获取列表总行数
Gui,6:Add,Button,x+10 yp gGuiControl_Gui voption_9,获取所有列表项内容
Gui,6:Add,Button,xm y+10 gGuiControl_Gui voption_10,删除第2行
Gui,6:Add,Button,x+10 yp gGuiControl_Gui voption_11,删除[item]项
Gui,6:Add,Button,x+10 yp gGuiControl_Gui voption_12,清空列表
Gui,6:Add,Button,xm y+10 gGuiControl_Gui voption_13,增加水印提示文字`n控件处于空选时显示
Gui,6:Show,AutoSize,ComboBox或DropDownList示例
Return

GuiControl_Gui:
	Switch A_GuiControl
	{
		Case "option_0":
			CB_DDL.Show(hcb,True)
		Case "option_1":
			Gui,+OwnDialogs
			MsgBox % "选择[item]项，返回当前行号：`n" (Index:=CB_DDL.SelectString(hcb,"item"))
			CB_DDL.Show(hcb,True),CB_DDL.SetCursel(hcb,Index)
		Case "option_2":
			Gui,+OwnDialogs
			MsgBox % "追加一项到列表，返回总行数：`n" (Index:=CB_DDL.Add(hcb,"我是新增项"))
			CB_DDL.Show(hcb,True)
		Case "option_3":
			Gui,+OwnDialogs
			MsgBox % "修改第4行内容，返回1成功反之：`n" CB_DDL.Modify(hcb,4,"我是修改项")
			CB_DDL.Show(hcb,True)
		Case "option_4":
			Gui,+OwnDialogs
			MsgBox % "获取第五行内容：`n" CB_DDL.GetText(hcb,5)
			CB_DDL.Show(hcb,True),CB_DDL.SetCursel(hcb,5)
		Case "option_5":
			Gui,+OwnDialogs
			MsgBox % "在第三行处插入一项，返回行号成功反之：`n" CB_DDL.Insert(hcb,"我是插入项",3)
			CB_DDL.Show(hcb,True)
		Case "option_6":
			Gui,+OwnDialogs
			MsgBox % "获取字符[item5]项在列表中的行号：`n" (Index:=CB_DDL.GetItemPos(hcb, "item5"))
			CB_DDL.Show(hcb,True),CB_DDL.SetCursel(hcb,Index)
		Case "option_7":
			Gui,+OwnDialogs
			MsgBox % "获取高亮行行号：`n" CB_DDL.GetCurrentSel(hcb)
			CB_DDL.Show(hcb,True)
		Case "option_8":
			Gui,+OwnDialogs
			MsgBox % "获取列表总行数：`n" CB_DDL.GetCount(hcb)
			CB_DDL.Show(hcb,True)
		Case "option_9":
			Gui,+OwnDialogs
			MsgBox % "选择所有列表项内容以指定符号分隔：`n[ " CB_DDL.GetAllItem(hcb,"，") " ]"
			CB_DDL.Show(hcb,True)
		Case "option_10":
			Gui,+OwnDialogs
			MsgBox % "删除第二行，返回1成功反之：`n" CB_DDL.Delete(hcb,2)
			CB_DDL.Show(hcb,True)
		Case "option_11":
			Gui,+OwnDialogs
			MsgBox % "删除[item]项，返回1成功反之：`n" CB_DDL.DeleteItem(hcb,"item")
			CB_DDL.Show(hcb,True)
		Case "option_12":
			Gui,+OwnDialogs
			MsgBox % "清空列表：`n" CB_DDL.DeleteAll(hcb)
			CB_DDL.Show(hcb,True)
		Case "option_13":
			CB_DDL.SelectString(hcb, "")
			CB_DDL.SetCuebanner(hcb, "CB或DDL下拉框")
		Case "SetCB":
			Gui,6:Submit,NoHide
			/*
				如果不加==>Gui,6:Submit,NoHide就需要在用GuiControlGet获取ComboBox或DropDownList选择项内容
				GuiControlGet, SetCB ,, SetCB, Text
				如果ComboBox或DropDownList控件加了AltSubmit属性，获取值就是选择项的行号
			*/
			Gui,+OwnDialogs
			MsgBox % SetCB
	}
Return

6GuiClose:
	ExitApp
Return

基础控制函数：