NAME: cw_droplist_pm PURPOSE: widget equivalent a WIDGET_DROPLIST sauf qu'en plus on dispose de 2 bouttons + et - pour deplacer le widget de +/- 1. CATEGORY: compound widget (aide a l''ecriture des widgets) CALLING SEQUENCE: id=cw_droplist_pm(parent) INPUTS: Parent: The widget ID of the parent widget. KEYWORD PARAMETERS:tous ceux de WIDGET_DROPLIST OUTPUTS: The returned value of this function is the widget ID of the newly-created animation widget. COMMON BLOCKS: none SIDE EFFECTS: Widget Events Returned by Droplist Widgets Pressing the mouse button while the mouse cursor is over an element of a droplist widget causes the widget to change the label on the droplist button and to generate an event. The appearance of any previously selected element is restored to normal at the same time. The event structure returned by the WIDGET_EVENT function is defined by the following statement: { CW_DROPLIST_PM, ID:0L, TOP:0L, HANDLER:0L, INDEX:0L, OUT:0 } The first three fields are the standard fields found in every widget event. INDEX returns the index of the selected item. This can be used to index the array of names originally used to set the widget''s value OUT:c''est un entier qui peut prendre 3 valeurs: 1 : si on appuie sur + alors que l''index est deja aux max. rq: ds ce cas l''index reste au max -1: si on appuie sur - alors que l''index est deja aux min. rq: ds ce cas l''index reste au min 0 : ds les autres cas! Keywords to WIDGET_CONTROL A number of keywords to the WIDGET_CONTROL procedure affect the behavior of cw_slider_pm widget: GET_VALUE and SET_VALUE. 1) GET_VALUE widget_control,wid_id,get_value=resultat retourne ds la variable resultat une structure de 3 elements dont les noms sont inspires des mots cles que l''on peut passer a widget_control qd on utilise WIDGET_DROPLIST: DROPLIST_NUMBER: the number of elements currently contained in the specified droplist widget. DROPLIST_SELECT: the zero-based number of the currently-selected element (i.e., the currently-displayed element) in the specified droplist widget. DYNAMIC_RESIZE: a True value (1) if the widget specified by Widget_ID is a button, droplist, or label widget that has had its DYNAMIC_RESIZE attribute set. Otherwise, False (0) is returned. 2) SET_VALUE widget_control,wid_id,set_value=impose permet de modifier l''etat de la droplist comme on peut le faire pour WIDGET_DROPLIST Impose peut etre: a) The contents of the list widget (string or string array) b) une structure qui peut avoir comme elements (de 1 a 3): DYNAMIC_RESIZE:Set this keyword to activate (if set to 1) or deactivate (if set to 0) dynamic resizing of the specified CW_DROPLIST_PM widget (see the documentation for the DYNAMIC_RESIZE keyword to WIDGET_DROPLIST procedure for more information about dynamic widget resizing). DROPLIST_SELECT:Set this keyword to return the zero-based number of the currently-selected element (i.e., the currently-displayed element) in the specified droplist widget. VALUE: The contents of the list widget (string or string array) RESTRICTIONS: EXAMPLE: cf utiliser le programme founit i-dessous: testwid et la procedure associee, testwid_event.