rem: const mx = 20; const my = 120; const mw = 100;
add: const int mx = 20; const int my = 120; const int mw = 100;
context: paintPreviewBox(Panel *panel){    WMScreen *scr = WMWidgetScreen(panel->win);    Display *dpy = WMScreenDisplay(scr);    GC black = WMColorGC(panel->black);    GC white = WMColorGC(panel->white);    GC dark = WMColorGC(panel->dark);    GC light = WMColorGC(panel->light);            if (panel->preview == None) {	WMPixmap *pix;		panel->preview = XCreatePixmap(dpy, WMWidgetXID(panel->win),				       240-4, 215-4, WMScreenDepth(scr));	pix = WMCreatePixmapFromXPixmaps(scr, panel->preview, None,					 240-4, 215-4, WMScreenDepth(scr));	WMSetLabelImage(panel->prevL, pix);	WMReleasePixmap(pix);    }        XFillRectangle(dpy, panel->preview, WMColorGC(panel->back),		   0, 0, 240-4, 215-4);    /* window title */    {	int h, fh;		fh = WMFontHeight(panel->windowTitleFont);	h = fh+6;		XFillRectangle(dpy, panel->preview, black,		       19, 19, 203, h+3);	XDrawLine(dpy, panel->preview, light,		  20, 20, 220, 20);	XDrawLine(dpy, panel->preview, light,		  20, 20, 20, 20+h);	XDrawLine(dpy, panel->preview, dark,		  20, 20+h, 220, 20+h);		XDrawLine(dpy, panel->preview, dark,		  220, 20, 220, 20+h);		WMDrawString(scr, panel->preview, white, panel->windowTitleFont,		     20+(200-WMWidthOfString(panel->windowTitleFont, "Window Titlebar", 15))/2,		     20+(h-fh)/2, "Window Titlebar", 15);    }        /* menu title */    {	int h, h2, fh, fh2;	int i;	const mx = 20;	const my = 120;	const mw = 100;		fh = WMFontHeight(panel->menuTitleFont);	h = fh+6;	XFillRectangle(dpy, panel->preview, black,		       mx-1, my-1, mw+3, h+3);	XDrawLine(dpy, panel->preview, light,		  mx, my, mx+mw, my);	XDrawLine(dpy, panel->preview, light,		  mx, my, mx, my+h);	XDrawLine(dpy, panel->preview, dark,		  mx, my+h, mx+mw, my+h);		XDrawLine(dpy, panel->preview, dark,		  mx+mw, my, mx+mw, my+h);	WMDrawString(scr, panel->preview, white, panel->menuTitleFont,		     mx+5, my+(h-fh)/2, "Menu Title", 10);		fh2 = WMFontHeight(panel->menuItemFont);	h2 = fh2+6;		/* menu items */	for (i = 0; i < 4; i++) {	    drawMenuItem(scr, dpy, panel->preview,			 mx-1, my+2+h+i*h2, mw+2, h2,			 light, dark, black, white, 			 panel->menuItemFont, fh2,			 "Menu Item");	}    }    WMRedisplayWidget(panel->prevL);}