/* File: i18n-xom.c */	#include <stdio.h>	#include <locale.h>	#include <X11/Xlib.h>	#include <X11/Xutil.h>	#include <X11/keysym.h>	#define DEFAULT_FONT_NAME       "7x14,-*-*-*-r-normal--*-140-*-*-*-*-*-*"	#define F_SIZE                  13	#define COL                     30	#define ROW                     10	#define W_WIDTH                 (F_SIZE * COL)	#define W_HEIGHT                (F_SIZE * (ROW+1))	main(int argc, char *argv[])	{		Display                 *display;		int                     screen;		GC                      gc;		Window                  window;		XWMHints                hints;		Atom                    protocols;		//XOM		XOM			om;		XOC			oc;		XOMCharSetList		cslist;		XOMOrientation		orientation;		Bool			direction;		Bool			contextdrawing;		char                    **missing_list;		int                     missing_count;		char                    *def_string;		XFontSetExtents         *fs_ext;		int                     dec;		//XIM		XIM                     im;		XIC                     ic;		XRectangle              s_rect;		XPoint                  spot;		XVaNestedList           preedit_attr, status_attr;		XEvent                  event;		unsigned long           mask, fevent;		int                     len = 128;		char                    string[128], s_tab[ROW][128];		int                     i, row = 0, col = 0;		KeySym                  keysym;		int                     count = 0;		Status                  status;		//初始化		display = XOpenDisplay("");		screen  = DefaultScreen(display);		gc = DefaultGC(display,screen);		//判斷 locale 的支持情況		if(setlocale(LC_CTYPE, "") == NULL){			fprintf(stderr, "Error : setlocale() !\n");			exit(0);		}		//打開 Outpu Method		om = XOpenOM(display, NULL, NULL, NULL);		if (om) {			printf("locale of XOM: %s\n", XLocaleOfOM(om));			XGetOMValues(om,			 	XNRequiredCharSet, &cslist,			 	XNQueryOrientation, &orientation,			 	XNDirectionalDependentDrawing, &direction,			 	XNContextualDrawing, &contextdrawing				);				for (i = 0; i < cslist.charset_count; i++) {				printf("needed charset[%d]: %s\n", 					i, cslist.charset_list[i]);			}			} else {			printf("XOpenOM error\n");			exit(1);		}		//建立 Output Context		oc = XCreateOC(om,			XNBaseFontName, DEFAULT_FONT_NAME,			NULL);		if (oc) {			XGetOCValues(oc, 				XNMissingCharSet, &missing_count,				XNRequiredCharSet, &missing_list,				XNDefaultString, &def_string,				NULL);			for (i = 0; i < missing_count; i++) {				printf("missing_list[%d]: %s\n", 					i, missing_list[i]);			}		} else {			printf("XCreateOC error\n");			exit(1);		}		//從 Output Context 獲得字體結構		fs_ext = XExtentsOfFontSet(oc);		dec = fs_ext->max_logical_extent.height-			(-fs_ext->max_logical_extent.y);		//建立窗口		window  = XCreateSimpleWindow(display, 			RootWindow(display, screen),		  	0, 0, W_WIDTH, W_HEIGHT, 2,		  	BlackPixel(display,screen), WhitePixel(display,screen));		XStoreName(display, window, "XIM demo - Over window");		hints.flags = InputHint;		hints.input = True;		XSetWMHints(display, window, &hints);		protocols = XInternAtom(display, "WM_DELETE_WINDOW", True);		XSetWMProtocols(display, window, &protocols, 1);		//XIM 部分		if((im = XOpenIM(display, NULL, NULL, NULL)) == NULL){			printf("Error : XOpenIM() !\n");			exit(0);		}			spot.x  =       F_SIZE/2 * col;		spot.y  =       F_SIZE * (row+1);		preedit_attr = XVaCreateNestedList(0,		   	XNSpotLocation, &spot,		   	XNFontSet, oc,			/*XNForeground, WhitePixel(display, screen),*/		   	XNForeground, 23,		   	XNBackground, BlackPixel(display, screen),		   	NULL);		s_rect.x =      F_SIZE * 0;		s_rect.y =      F_SIZE * ROW;		s_rect.width =  W_WIDTH;		s_rect.height = F_SIZE * 1;		status_attr = XVaCreateNestedList(0,		  	XNArea, &s_rect,		  	XNFontSet, oc,		  	NULL);			ic = XCreateIC(im,		   	XNInputStyle, XIMPreeditPosition | XIMStatusArea,		   	XNClientWindow, window,		   	XNPreeditAttributes, preedit_attr,		   	XNStatusAttributes, status_attr,		   	NULL);		if(ic == NULL){			printf("Error : XCreateIC() !\n");			XCloseIM(im);			exit(0);		}		XFree(preedit_attr);		XFree(status_attr);		XGetICValues(ic, XNFilterEvents, &fevent, NULL);		mask = ExposureMask | KeyPressMask | FocusChangeMask;		XSelectInput(display, window, mask|fevent);				for(i=0; i<ROW; i++)			s_tab[i][0] = 0;			XMapWindow(display, window);				for(;;){			XNextEvent(display, &event);			if(XFilterEvent(&event, (Window)0) == True)				continue;			switch(event.type){			case FocusIn :				XSetICFocus(ic);				break;			case FocusOut :				XUnsetICFocus(ic);				break;			case Expose :				for(i=0; i<ROW; i++)					XmbDrawString(display,window, oc, gc, 0,				  	F_SIZE*(i+1),s_tab[i],strlen(s_tab[i]));				break;			case KeyPress :				count = XmbLookupString(ic,					(XKeyPressedEvent*)&event,					string, len, &keysym, &status);				if(status == XLookupBoth&&keysym == XK_Return){					row = (++row)%ROW;					col = 0;					s_tab[row][0] = 0;					XClearArea(display, window, 						0, F_SIZE*row+dec,					   	W_WIDTH, F_SIZE, False);				}				else if(status == XLookupChars						|| status == XLookupBoth){					XmbDrawString(display, window, oc, gc,				  		F_SIZE/2*col, F_SIZE*(row+1),					  	string, count);					for(i=0; i<count; i++, col++)						s_tab[row][col] = string[i];					s_tab[row][col] = 0;				}				spot.x = F_SIZE/2 * col;				spot.y = F_SIZE * (row+1);				preedit_attr = XVaCreateNestedList(0,				   	XNSpotLocation, &spot,				   	NULL);				XSetICValues(ic,XNPreeditAttributes,preedit_attr,NULL);				XFree(preedit_attr);				break;			case ClientMessage :				if(event.xclient.data.l[0] == protocols){					XDestroyOC(oc);					XCloseOM(om);					XDestroyIC(ic);					XCloseIM(im);					XDestroyWindow(display, window);					XCloseDisplay(display);					exit(0);				}				break;			defaults:				break;			}		}	}