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302 строки
11 KiB
Plaintext
302 строки
11 KiB
Plaintext
/***********************************************************
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Copyright 1993 Interleaf, Inc.
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Permission to use, copy, modify, and distribute this software
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and its documentation for any purpose without fee is granted,
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provided that the above copyright notice appear in all copies
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and that both copyright notice and this permission notice appear
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in supporting documentation, and that the name of Interleaf not
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be used in advertising or publicly pertaining to distribution of
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the software without specific written prior permission.
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Interleaf makes no representation about the suitability of this
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software for any purpose. It is provided "AS IS" without any
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express or implied warranty.
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******************************************************************/
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Notes/Issues:
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- The list menu is posted on the select button release. In order to
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be like Windows, the menu would come up on the button press, and allow
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the user to drag immediately, without letting go of the select button.
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When I wrote the widget, I didn't have time to investigate getting this
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drag to work. We would have to simulate the select press inside the
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list, I imagine.
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- No key pattern matching available.
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- Lack of translation table functionality.
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1. ComboBox Widget
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1.1 Widget Class Name
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ComboBox
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1.2 Synopsis
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#include "ComboBox.h"
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widget = DtCreateComboBox(parent, name, arglist, num_args);
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XtManageChild(widget);
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1.3 Description
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1.4 Resources
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Property Type Init Access
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-------- ---- ---- ------
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XmNactivateCallback CallbackList NULL CSG
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XmNalignment unsigned char XmALIGNMENT_BEGINNING CSG
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XmNarrowSpacing Dimension 0 CSG
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XmNarrowSize Dimension dynamic G
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XmNarrowType unsigned char XmWINDOWS CSG
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XmNcolumns Integer 20 CSG
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XmNfocusCallback CallbackList NULL CSG
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XmNitemCount Unsigned Integer 0 CSG
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XmNitems XmStringTable NULL CSG
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XmNlabelString XmString NULL CSG
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XmNlist Widget NULL G
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XmNlistFontList FontList NULL CSG
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XmNlistMarginHeight Dimension 2 CSG
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XmNlistMarginWidth Dimension 2 CSG
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XmNlistSpacing Dimension 0 CSG
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XmNlosingFocusCallback CallbackList NULL CSG
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XmNmarginHeight Dimension 2 CSG
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XmNmarginWidth Dimension 2 CSG
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XmNmaxLength Unsigned Integer MAXINT CSG
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XmNmenuPostCallback CallbackList NULL CSG
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XmNorientation unsigned char XmRIGHT CSG
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XmNpoppedUp Boolean FALSE G
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XmNrecomputeSize Boolean TRUE CSG
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XmNselectedItem XmString NULL CSG
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XmNselectedPosition Unsigned Integer 0 CSG
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XmNselectionCallback CallbackList NULL CSG
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XmNtextField Widget NULL G
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XmNtopItemPosition Unsigned Integer 1 CSG
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XmNtype unsigned char XmDROP_DOWN_LIST_BOX CSG
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XmNupdateLabel Boolean TRUE CSG
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XmNvisibleItemCount Unsigned Integer 10 CSG
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XmNactivateCallback:
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List of callbacks called when the user does KActivate in
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the text-field widget (when ComboBox is
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XmDROP_DOWN_COMBO_BOX). See also XmTextFieldWidget.
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XmNalignment:
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Alignment of the text within the non-editable label.
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This only gets used if XmNtype is XmDROP_DOWN_LIST_BOX.
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Values are:
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XmALIGNMENT_CENTER, XmALIGNMENT_BEGINNING,
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XmALIGNMENT_END
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See also XmLabelWidget
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XmNarrowSpacing:
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Amount of space between the arrow and the label or
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text-field (in pixels).
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XmNarrowSize:
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Height/Width of arrow. This is not a settable resource;
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it is based on the height of the ComboBox (which is
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related to the font used).
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XmNarrowType:
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Type of down arrow displayed in the ComboBox. The legal
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values are: XmWINDOWS, XmMOTIF
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Xmcolumns:
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This resource is passed on to the text-field widget.
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See also XmTextFieldWidget.
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XmNfocusCallback:
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List of callbacks called when the text-field widget accepts
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focus (when ComboBox is editable - XmDROP_DOWN_COMBO_BOX).
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See also XmTextFieldWidget.
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XmNitemCount:
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Total number of items. This value must be the number of
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items in XmNitems and must not be negative. It is
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automatically updated by the widget whenever an item
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is added or deleted.
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XmNitems:
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A list of xm-strings which will be displayed in the drop
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down list box.
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XmNlabelString:
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This is the string that will be used in the label when the
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resource XmNupdateLabel is FALSE. This string will remain
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in the label as long as the XmNupdateLayout resource is
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FALSE, even if the user picks a new item off the list.
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XmNlist:
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List widget (which is inside the popup). Gettable only.
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XmNlistFontList:
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This resource is passed on to the XmListWidget as the
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XmNfontList resource.
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See also XmListWidget.
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XmNlistMarginHeight:
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This resource is passed on to the XmListWidget as the
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XmNlistMarginHeight resource.
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See also XmListWidget.
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XmNlistMarginWidth:
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This resource is passed on to the XmListWidget as the
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XmNlistMarginWidth resource.
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See also XmListWidget.
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XmNlistSpacing:
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This resource is passed on to the XmListWidget as the
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XmNlistSpacing resource.
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See also XmListWidget.
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XmNlosingFocusCallback:
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List of callbacks called when the text-field widget loses
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focus (when ComboBox is editable - XmDROP_DOWN_COMBO_BOX).
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See also XmTextFieldWidget.
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XmNmarginHeight:
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Vertical distance from the beginning of the widget to the
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start of the shadow. Used for making this widget
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look like push-buttons, etc.
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XmNmarginWidth:
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Horizontal distance from the beginning of the widget to
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the start of the shadow. Used for making this widget
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look like push-buttons, etc.
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XmNmaxLength:
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Maximum length of the text string that can be entered into
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a text-field widget. This resource is passed on to the
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text-field (when ComboBox is editable - XmDROP_DOWN_COMBO_BOX).
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See also XmTextFieldWidget.
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XmNmenuPostCallback:
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List of callbacks called right before the list menu
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gets put on the screen.
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XmNorientation:
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Specifies location of down arrow. Legal values are:
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XmLEFT, XmRIGHT
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XmNpoppedUp:
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Returns TRUE if the list menu is mapped; otherwise, FALSE.
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XmNrecomputeSize:
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If FALSE, the widget will not try to recompute a new
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size if setting some other resource would cause it
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to grow or shrink.
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XmNselectedItem:
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Item currently visible in list. Can be used to
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change selected item. User must make copy of this
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before modifying.
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XmNselectedPosition:
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Position of item, within scrolling list, currently
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visible (in label or text-field). Can be used
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to change selected item. Starts at 0.
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XmNselectionCallback:
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List of callbacks called when the user selects something
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off the list (the list's XmNdefaultActionCallback or
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XmNbrowseSelectionCallback callbacks).
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See also XmListWidget.
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XmNtextField:
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text-field widget used within the ComboBox when
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XmNtype is XmDROP_DOWN_COMBO_BOX.
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XmNtopItemPosition:
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This resource is passed on to the XmListWidget as the
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XmNtopItemPosition resource.
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See also XmListWidget.
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XmNtype:
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Type of combo-box create. Legal values are:
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XmDROP_DOWN_LIST_BOX (non-editable, uses label)
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XmDROP_DOWN_COMBO_BOX (editable, uses text-field)
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XmNupdateLabel:
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If TRUE, the contents of the label will change when the
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user picks a new item off the list. If FALSE, the
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label will not update, and the resource XmNlabelString
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will be used as the label.
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XmNvisibleItemCount:
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This resource is passed on to the XmListWidget as the
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XmNvisibleItemCount resource.
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See also XmListWidget.
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========================================================================
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Functions available for ComboBox widget.
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Widget
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DtCreateComboBox(parent, name, args, num_args)
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Widget parent;
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char *name;
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ArgList args;
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int num_args;
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{
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}
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Creates an instance of a ComboBox widget.
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void
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DtComboBoxAddItem(widget, item, position, unique)
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DtComboBoxWidget widget;
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XmString item;
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int position;
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Boolean unique;
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Adds the given item to the list at the given position.
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position is an integer specifying the position of the new item in the
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list. A value of 1 makes the new item the first item in the list; a value
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of 2 makes it the second item, and so on. A value of 0 (zero) makes the new
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item the last item in the list.
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If the unique parameter is TRUE, the item will only be added if it doesn't
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already exist. If it is FALSE, the item will always be added.
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See also, XmListSelectItem in the Motif reference manual.
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void
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DtComboBoxDeletePos(widget, position)
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DtComboBoxWidget widget;
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int position;
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Deletes the item at the given position from the list.
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position is an integer specifying the position of the item to delete
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in the list. A value of 1 indicates that the first item in the list is
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to be deleted. A value of 2 indicates the second item, etc. A value of 0
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indicates that the last item is to be deleted. See also,
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XmListSelectItem in the Motif reference manual.
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void
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DtComboBoxSetItem(widget, item)
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DtComboBoxWidget widget;
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XmString item;
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Puts the given item into the combo-box label or text-field (this will be the
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new value shown). The given item will be positioned at the top of the
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list. This may cause problems if the viewing area is larger than the
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number of items in the list. The new item will not be selected (use
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DtComboBoxSelectItem).
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See also, XmListSetItem in the Motif reference manual.
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void
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DtComboBoxSelectItem(combo, item)
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DtComboBoxWidget combo;
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XmString item;
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Puts the given item into the combo-box label or text-field (this will be the
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new value shown). The currently selected item in the list will be deselected
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and the given item will be selected. See also, XmListSelectItem in the Motif
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reference manual.
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------------------------------------------------------------------------
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