1 /* 2 3 Canvas.h - public header file for the Canvas Widget 4 - a widget that allows programmer-specified refresh procedures. 5 Copyright (C) 1990 Robert H. Forsman Jr. 6 7 This library is free software; you can redistribute it and/or 8 modify it under the terms of the GNU Library General Public 9 License as published by the Free Software Foundation; either 10 version 2 of the License, or (at your option) any later version. 11 12 This library is distributed in the hope that it will be useful, 13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15 Library General Public License for more details. 16 17 You should have received a copy of the GNU Library General Public 18 License along with this library; if not, write to the Free 19 Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 20 21 */ 22 23 #ifndef _Canvas_h 24 #define _Canvas_h 25 26 #include <X11/Core.h> 27 28 #define XtNexposeProc "exposeProc" 29 #define XtNexposeProcData "exposeProcData" 30 #define XtNresizeProc "resizeProc" 31 #define XtNresizeProcData "resizeProcData" 32 33 #define XtCExposeProc "ExposeProc" 34 #define XtCExposeProcData "ExposeProcData" 35 #define XtCResizeProc "ResizeProc" 36 #define XtCResizeProcData "ResizeProcData" 37 38 extern WidgetClass canvasWidgetClass; 39 40 typedef struct _CanvasClassRec *CanvasWidgetClass; 41 typedef struct _CanvasRec *CanvasWidget; 42 43 typedef void(*XfwfCanvasExposeProc)( 44 #if NeedFunctionPrototypes 45 Widget w, 46 XExposeEvent *event, 47 Region region, 48 XtPointer client_data 49 #endif 50 ); 51 52 typedef void(*XfwfCanvasResizeProc)( 53 #if NeedFunctionPrototypes 54 Widget w, 55 XtPointer client_data 56 #endif 57 ); 58 59 #endif /* _Canvas_h */ 60