xview

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Options
Extensions
Changes

This command is used to query and change the horizontal position of the text in the widget's window. It can take any of the following forms:

(#<widget> 'xview): Returns a list containing two elements. Each element is a real fraction between 0 and 1; together they describe the portion of the document's horizontal span that is visible in the window. For example, if the first element is .2 and the second element is .6, 20% of the text is off-screen to the left, the middle 40% is visible in the window, and 40% of the text is off-screen to the right. The fractions refer only to the lines that are actually visible in the window: if the lines in the window are all very short, so that they are entirely visible, the returned fractions will be 0 and 1, even if there are other lines in the text that are much wider than the window. These are the same values passed to scrollbars via the #:xscrollcommand option.
(#<widget> 'xview 'moveto fraction): Adjusts the view in the window so that fraction of the horizontal span of the text is off-screen to the left. Fraction is a fraction between 0 and 1.
(#<widget> 'xview 'scroll number what): This command shifts the view in the window left or right according to number and what. Number must be an integer. What must be either units or pages or an abbreviation of one of these. If what is units, the view adjusts left or right by number average-width characters on the display; if it is pages then the view adjusts by number screenfuls. If number is negative then characters farther to the left become visible; if it is positive then characters farther to the right become visible.


		xview
		xview

	Preface Introduction Tutorial Implementation Commands bitmap eval-wish get-tk-var photo set-tk-var! tk create-widget button canvas checkbutton entry frame label labelframe listbox menu menubutton message panedwindow radiobutton scale scrollbar scrolledtext spinbox text Indices Tags Marks Embedded Windows Embedded Images Selection Insertion Cursor Modified Flag The Undo Mechanism Bindings Performance Command bbox cget compare configure create-widget delete dlineinfo dump edit get image index insert mark scan search see tag window xview yview Options tk_optionMenu toplevel get-id exec call tk-id->widget tk-var tk/after tk/appname tk/bind tk/bindtags tk/caret tk/choosecolor tk/choosedirectory tk/clipboard tk/console tk/destroy tk/dialog tk/event tk/focus tk/getopenfile tk/getsavefile tk/grab tk/grid tk/image tk/lower tk/messagebox tk/option tk/pack tk/place tk/popup tk/raise tk/scaling tk/update tk/useinputmethods tk/wait tk/windowingsystem tk/winfo tk/wm Options Extensions Changes	This command is used to query and change the horizontal position of the text in the widget's window. It can take any of the following forms: (#<widget> 'xview) Returns a list containing two elements. Each element is a real fraction between 0 and 1; together they describe the portion of the document's horizontal span that is visible in the window. For example, if the first element is .2 and the second element is .6, 20% of the text is off-screen to the left, the middle 40% is visible in the window, and 40% of the text is off-screen to the right. The fractions refer only to the lines that are actually visible in the window: if the lines in the window are all very short, so that they are entirely visible, the returned fractions will be 0 and 1, even if there are other lines in the text that are much wider than the window. These are the same values passed to scrollbars via the #:xscrollcommand option. (#<widget> 'xview 'moveto fraction) Adjusts the view in the window so that fraction of the horizontal span of the text is off-screen to the left. Fraction is a fraction between 0 and 1. (#<widget> 'xview 'scroll number what) This command shifts the view in the window left or right according to number and what. Number must be an integer. What must be either units or pages or an abbreviation of one of these. If what is units, the view adjusts left or right by number average-width characters on the display; if it is pages then the view adjusts by number screenfuls. If number is negative then characters farther to the left become visible; if it is positive then characters farther to the right become visible. © Author \| Home \| Sitemap