DESCRIPTION.

Annule la sélection active dans l'élément texte ayant le focus d'une zone de dessin.

SYNTAXE.

CAN_Toile.select_clear ( )

CAN_Toile ⇨ instance quelconque de tkinter.Canvas ( ) [ OBLIGATOIRE ]

.select_clear ( ) ⇨ appel de la méthode [ OBLIGATOIRE ]

REMARQUE.

tkinter.Canvas ( ).select_clear ( ) annule la sélection, mais pas les caractères de la sélection. Voir  tkinter.Canvas ( ).dchars ( ) pour supprimer des caractères dans un élément texte d'un zone de dessin.

EXEMPLE.

import tkinter

def FNC_Ajuster ( event ) :

FNC_Annuler ( )

CAN_Carte.select_from ( 1 , SCA_Cursor.get ( ) )

CAN_Carte.select_adjust ( 1 , SCA_Pivot.get ( ) )

def FNC_Annuler ( ) :

CAN_Carte.select_clear ( )

def FNC_Curseur ( event ) :

CAN_Carte.icursor ( 1 , SCA_Cursor.get ( ) )

def FNC_Inserer ( ) :

if TKV_Texte.get ( ) == "" : return

CAN_Carte.insert ( 1 , "insert" , TKV_Texte.get ( ) )

FNC_Curseur ( None )

FNC_Longeur ( )

def FNC_Longeur ( ) :

ktexte = CAN_Carte.itemcget ( 1 , "text" )

SCA_Cursor [ "to" ] = len ( ktexte )

SCA_Pivot [ "to" ] = len ( ktexte )

def FNC_Supprimer ( ) :

if CAN_Carte.select_item ( ) : 

CAN_Carte.dchars ( 1 , "sel.first" , "sel.last" )

FNC_Longeur ( )

TKI_Principal = tkinter.Tk ( ) 

TKV_Texte = tkinter.StringVar ( )

BUT_Quitter = tkinter.Button ( TKI_Principal , text = "Quitter" , command = TKI_Principal.destroy )

BUT_Ajuster = tkinter.Button ( TKI_Principal , text = "Ajuster" , command = lambda : FNC_Ajuster ( None ) )

BUT_Inserer = tkinter.Button ( TKI_Principal , text = "Insérer" , command = FNC_Inserer )

BUT_Effacer = tkinter.Button ( TKI_Principal , text = "Annuler la sélection" , command = FNC_Annuler )

BUT_Supprimer = tkinter.Button ( TKI_Principal , text = "Supprimer la sélection" , command = FNC_Supprimer )

ENT_Texte = tkinter.Entry ( TKI_Principal , textvariable = TKV_Texte , width = 15 )

SCA_Cursor = tkinter.Scale ( TKI_Principal , orient = "horizontal" , length = 120 , command = FNC_Curseur )

SCA_Pivot = tkinter.Scale ( TKI_Principal , orient = "horizontal" , length = 120 , command = FNC_Ajuster )

CAN_Carte = tkinter.Canvas ( TKI_Principal , bg = "white" , height = 100 , width = 200 )

CAN_Carte.create_text ( 100 , 50 , text = "Mon Python à moi.\nUn Python pour tous.\nOrigine NERD" , justify = "center" )

ENT_Texte.bind ( "<Leave>" , lambda event : CAN_Carte.focus_set ( ) )

CAN_Carte.grid ( row = 0 , column = 0 , columnspan = 2 , sticky = "nesw" )

tkinter.Label ( TKI_Principal , text = "Curseur :" , justify = "right" ).grid ( row = 1 , column = 0 , sticky = "se" )

SCA_Cursor.grid ( row = 1 , column = 1 , sticky = "nesw" )

BUT_Ajuster.grid ( row = 2 , column = 0 , sticky = "nesw" )

SCA_Pivot.grid ( row = 2 , column = 1 , sticky = "nesw" )

BUT_Inserer.grid ( row = 3 , column = 0 , sticky = "nesw" )

ENT_Texte.grid ( row = 3 , column = 1 , sticky = "nesw" )

BUT_Effacer.grid ( row = 4 , column = 0 , columnspan = 2 , sticky = "nesw" )

BUT_Supprimer.grid ( row = 5 , column = 0 , columnspan = 2 , sticky = "nesw" )

BUT_Quitter.grid ( row = 6 , column = 0 , columnspan = 2 , sticky = "nesw" )

CAN_Carte.focus_set ( )

CAN_Carte.focus ( 1 )

FNC_Longeur ( )

TKI_Principal.mainloop ( )