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opendir() + customly created directories
Post 302179078 by shamrock on Thursday 27th of March 2008 12:55:49 AM
03-27-2008
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code:
#include<iostream>
#include <dirent.h>
using namespace std;
int main()
{
DIR*dir;
dir = opendir("/");
if (dir !=NULL)
{
struct dirent * abcd;
while ((abcd=readdir (dir))!=NULL)
{
cout << abcd -> d_name;
}
}}
output : this gives the output of Directory "/"
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code:
#include<iostream>
#include <dirent.h>
using namespace std;
int main()
{
DIR*dir;
dir = opendir("/");
if (dir !=NULL)
{
struct dirent * abcd;
while ((abcd=readdir (dir))!=NULL)
{
cout << abcd -> d_name;
}
}}
output : this gives the output of Directory "/"
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LEARN ABOUT SUSE
tk::choosedirectory
chooseDirectory(3) User Contributed Perl Documentation chooseDirectory(3) NAME
chooseDirectory - pops up a dialog box for the user to select a directory. SYNOPSIS
$widget->chooseDirectory( ?option value ...? ); DESCRIPTION
The method chooseDirectory is implemented as a perl wrapper on the core tk "command" tk_chooseDirectory, and $widget is passed as the argument to the hidden -parent option. The chooseDirectory method pops up a dialog box for the user to select a directory. The following option-value pairs are possible as command line arguments: -initialdir dirname Specifies that the directories in directory should be displayed when the dialog pops up. If this parameter is not specified, then the directories in the current working directory are displayed. If the parameter specifies a relative path, the return value will convert the relative path to an absolute path. This option may not always work on the Macintosh. This is not a bug. Rather, the General Controls control panel on the Mac allows the end user to override the application default directory. -parent $widget Makes $widget the logical parent of the dialog. The dialog is displayed on top of its parent window. -title titleString Specifies a string to display as the title of the dialog box. If this option is not specified, then a default title will be displayed. -mustexist boolean Specifies whether the user may specify non-existant directories. If this parameter is true, then the user may only select directories that already exist. The default value is false. CAVEATS
Perl does not have a concept of encoded filesystems yet. This means that operations on filenames like "opendir" and "open" still use byte semantics. Tk however uses character semantics internally, which means that you can get filenames with the UTF-8 flag set in functions like "chooseDirectory", "getOpenFile" and similar. It's the user's responsibility to determine the encoding of the underlying filesystem and convert the result into bytes, e.g. use Encode; ... my $dir = $mw->chooseDirectory; $dir = encode("windows-1252", $dir); opendir DIR, $dir or die $!; ... See also "When Unicode Does Not Happen" in perlunicode and "Unicode in Filenames" in perltodo. SEE ALSO
Tk::getOpenFile, Tk::getOpenFile KEYWORDS
directory selection dialog perl v5.12.1 2007-11-08 chooseDirectory(3)