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CentOS 7.0 - man page for tk::choosecolor (centos section 3)

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chooseColor(3)		       User Contributed Perl Documentation		   chooseColor(3)

       chooseColor - pops up a dialog box for the user to select a color.

	   $color = $widget->chooseColor?(-option=>value, ...)?;

       The method chooseColor is implemented as a perl wrapper on the core tk "command"
       tk_chooseColor, and $widget is passed as the argument to the hidden -parent option.  The
       implementation of internal tk_chooseColor is platform specific, on Win32 it is a native
       dialog, and on UNIX/X11 it is implemented in terms of Tk::ColorEditor.

       The chooseColor method pops up a dialog box for the user to select a color. The following
       option-value pairs are possible as command line arguments:

	   Specifies the color to display in the color dialog when it pops up. color must be in a
	   form acceptable to the Tk_GetColor function.

	   Makes $widget the logical parent of the color dialog. The color dialog is displayed on
	   top of its parent window.

	   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.

       If the user selects a color, tk_chooseColor will return the name of the color in a form
       acceptable to Tk_GetColor.  If the user cancels the operation, the command will return

	$widget->configure(-fg => $parent->chooseColor(-initialcolor => 'gray',
						       -title => "Choose color"));

       color selection dialog

perl v5.16.3				    2014-06-10				   chooseColor(3)
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