src/mann/bindtags.n

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 208 .SH "STANDARD OPTIONS"
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 226 Command-Line Name:      \\fB\\$1\\fR
 227 Database Name:  \\fB\\$2\\fR
 228 Database Class: \\fB\\$3\\fR
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 246 .TH bindtags n 4.0 Tk "Tk Built-In Commands"
 247 .BS
 248 '\" Note:  do not modify the .SH NAME line immediately below!
 249 .SH NAME
 250 bindtags \- 确定对一个窗口提供那些绑定和求值的次序
 251 .SH 总览 SYNOPSIS
 252 \fBbindtags \fIwindow \fR?\fItagList\fR?
 253 .BE
 254
 255 .SH 描述 DESCRIPTION
 256 .PP
 257 用  \fBbind\fR 命令建立的一个绑定，可以关联上一个特定的窗口如 \fB.a.b.c\fR，一个类的名字如  \fBButton\fR，关键字 \fBall\fR，或任何其他字符串。所有这些形式叫做绑定标签(\fIbinding tags\fR)。每个窗口包含绑定标签的一个列表，它决定这个窗口如何处理事件。当在一个窗口中发生一个事件，依次把它提供给这个窗口的每个标签: 对于每个标签，执行匹配给定标签和事件的最明确的绑定。匹配处理的详情请参见 \fBbind\fR。
 258 .PP
 259 缺省的，每个窗口有四个绑定标签，它们依次是这个窗口的名字，这个窗口的类的名字，这个窗口的最近的顶层祖先的名字，和 \fBall\fR。顶层窗口缺省的只有三个标签，因为顶层名字与这个窗口的名字相同。\fBbindtags\fR 命令允许读取和修改一个窗口的绑定标签。
 260 .PP
 261 如果只用一个参数调用 \fBbindtags\fR，则把 \fIwindow\fR 的当前绑定标签的集合作为一个列表返回。如果对 \fBbindtags\fR 指定了 \fItagList\fR 参数，则它必须是一个正确的列表；把 \fIwindow\fR 的标签变更为这个列表的元素。\fItagList\fR 的元素可以是任意的字符串；但是，任何以一个点号开始的标签将被作为一个窗口的名字对待 ；如果在处理一个事件的时候不存在叫这个名字的窗口，则忽略这个事件的这个标签。\fItagList\fR 中元素的次序决定执行绑定脚本来响应事件的次序。例如，命令
 262 .CS
 263 \fBbindtags .b {all . Button .b}\fR
 264 .CE
 265 对叫做 \fB.b\fR 的一个按钮颠倒求值绑定脚本的次序，首先调用 \fBall\fR 绑定，接着是 \fB.b\fR 的顶层(“.”)的绑定，随后是类绑定，最后是 \fB.b\fR 的绑定。如果 \fItagList\fR 是一个空列表则把 \fIwindow\fR 的绑定标签返回为上面描述的缺省状态。
 266 .PP
 267 可以使用 \fBbindtags\fRs 命令来为一个窗口介入任意的补充绑定标签，或则删除标准标签。例如，命令
 268 .CS
 269 \fBbindtags .b {.b TrickyButton . all}\fR
 270 .CE
 271 把 \fB.b\fR 的 \fBButton\fR 标签替换为 \fBTrickyButton\fR。这意味着与 \fBButton\fR 标签相关联的按钮的缺省组件绑定，将不在提供给 \fB.b\fR，转而提供与 \fBTrickyButton\fR (可能有一些新的按钮行为)关联的任何绑定。
 272
 273 .SH "参见 SEE ALSO"
 274 bind
 275
 276 .SH 关键字 KEYWORDS
 277 binding, event, tag
 278
 279 .SH [中文版维护人]
 280 .B 寒蝉退士
 281 .SH [中文版最新更新]
 282 .B 2002/05/11
 283 .SH 《中国 Linux 论坛 man 手册页翻译计划》:
 284 .B http://cmpp.linuxforum.net