从 TCL 打开文件及其关联应用程序的最佳方法是什么? [英] What is the best way to open a file with its associated application from TCL?

问题描述

我在 Windows 上有一个 TCL/TK 应用程序.使用关联程序打开文件的最佳方法是什么?例如，我正在生成一个 PDF，我希望它自动打开.

I have a TCL/TK app on Windows. What is the best way to open a file with its associated program? For example, I am generating a PDF, and I want it to open automatically.

我一直在使用:

proc OpenDocument {filename} {
    if {[catch {
        exec rundll32.exe url.dll,FileProtocolHandler $filename &
    }]} {
        tk_messageBox -message "Error opening $filename."
    }
}

但我不确定它有多健壮，我想要一个更好的错误消息.例如，我如何才能检测是否安装了任何程序并与 PDF 相关联?

But I'm not sure how robust it is, and I would like to have a better error message. For example, how can I even detect if any program is installed and associated with PDFs?

我知道许多程序(包括 Foxit PDF Reader)在HKEY_CLASSES_ROOT.extension"下添加了一个注册表项，但 Adob​​e Reader 似乎使用不同的系统.

I know that many programs (including Foxit PDF Reader) add a registry entry under "HKEY_CLASSES_ROOT.extension", but Adobe Reader seems to use a different system.

有什么最佳实践吗?我将向几百个用户部署我的程序，我想相当确定如果有人有奇怪的配置，不会出现普遍的问题.

Is there any one best practice? I am going to be deploying my program to a few hundred users, and I want to be fairly sure there won't be widespread issues if someone has an odd configuration.

谢谢.

推荐答案

I would write (for Tcl 8.5)

I would write (for Tcl 8.5)

exec {*}[auto_execok start] "" $filename

(讨论此处).不过这可能会显示一个 cmd 窗口.

(discussion here). That may display a cmd window though.

如果你有一个早期的 Tcl，

If you have an earlier Tcl,

eval exec [auto_execok start] {""} [list $filename]

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