📜  Tk-选择小部件

📅  最后修改于: 2020-10-16 06:34:08             🧑  作者: Mango


选择窗口小部件用于在Tk应用程序中选择不同的选项。可用选择窗口小部件的列表如下所示。

Sr.No. Widgets & Description
1 Radiobutton

Widget that has a set of on/off buttons and labels, one of which may be selected.

2 Checkbutton

Widget that has a set of on/off buttons and labels, many of which may be selected.

3 Menu

Widget that acts as holder for menu items.

4 Listbox

Widget that displays a list of cells, one or more of which may be selected.

下面是一个使用选择小部件的简单Tk示例-

#!/usr/bin/wish

grid [frame .gender ]
grid [label .label1  -text "Male" -textvariable myLabel1 ] 
grid [radiobutton .gender.maleBtn -text "Male"   -variable gender -value "Male"
   -command "set  myLabel1 Male"] -row 1 -column 2
grid [radiobutton .gender.femaleBtn -text "Female" -variable gender -value "Female"
   -command "set  myLabel1 Female"] -row 1 -column 3
.gender.maleBtn select
grid [label .myLabel2  -text "Range 1 not selected" -textvariable myLabelValue2 ] 
grid [checkbutton .chk1 -text "Range 1" -variable occupied1 -command {if {$occupied1 } {
   set myLabelValue2 {Range 1 selected}
} else {
   set myLabelValue2 {Range 1 not selected}
} }]
proc setLabel {text} {
   .label configure -text $text 
}

当我们运行上面的程序时,我们将获得以下输出-

选择小部件示例