/*  mn_show.c

    *********** Copyright 1988-1993 by Vermont Creative Software ***********

mn_show()
Redisplays menu forms

Call

#include <vv_menu.h>

int mn_show(action_code, start_mfmp)
int action_code;	Code indicating how many menus are hidden
MFORMPTR start_mfmp;	Pointer to first (lowest-level) menu that was hidden

action_code:  Specify the same value that was passed to mn_hide()
when the menus were hidden.  Possible values are:

	MN_CUR	   Redisplay the current menu only
	MN_SUB	   Redisplay all menus up to, but not including,
		   the top-level menu
	MN_ALL	   Redisplay all menus in this branch of the menu tree

start_mfmp:  Specify the SAME form pointer that was passed to mn_hide() when 
the menus were hidden.  This should be the lowest-level menu that was hidden.

Returns

1	 The menu form(s) were successfully redisplayed.

Description

mn_show() redisplays menus that were previously hidden by a call to 
mn_hide().  If the action code is MN_SUB and only one menu is on the screen, 
this menu is not redisplayed since mn_hide() would not have hidden it.

Related Functions

mn_hide()

Cautions

The action_code and start_mfmp passed to mn_show() must be the same as 
those passed to mn_hide().  If they are not, the results may be bizzare. 

*/

#include <vv_menu.h>

#ifdef OLD_STYLE
int FASTCALL mn_show(action_code, start_mfmp)
int action_code;
MFORMPTR start_mfmp;
#else
int FASTCALL mn_show(int action_code, MFORMPTR start_mfmp)
#endif
{
    MFORMPTR mfmp;
    WINDOWPTR wnp;
    int retval = 1;
#ifndef NO_DEBUG_CODE
    static UCHAR fn[] = "mn_show";
#endif

    INIT_MODULE(fn);

    mfmp = start_mfmp;
/*----------------------------------------------------------------------------*/
/*  If all menus except the top-level menu are to be redisplayed but this IS  */
/*  the top-level menu, do nothing.			    		      */
/*----------------------------------------------------------------------------*/
    if ((action_code == MN_SUB) && (!mfmp->parent_fmp))
	goto END;

/*----------------------------------------------------------------------------*/
/*  Redisplay each menu until we get to the top of the redisplay tree.	      */
/*----------------------------------------------------------------------------*/
    do
    {
	wnp = mfmp->msg_wnp;
	if (wnp && wn_isup(wnp))	/* If menu msg window up, show it     */ 
	{
	    wnp->flags &= ~WNHIDDEN;
	    _wn_redraw(WNCHILDREN, wnp, wnp->rbf, wnp->cbf, wnp->ref, wnp->cef);
	    _shad_updn(UP, wnp);

   }

	wnp = mfmp->wnp;
	wnp->flags &= ~WNHIDDEN;
	_wn_redraw(WNCHILDREN, wnp, wnp->rbf, wnp->cbf, wnp->ref, wnp->cef);
	_shad_updn(UP, wnp);

	mfmp = mfmp->parent_fmp; 
    }
    while (mfmp && (action_code == MN_ALL ||
	   (action_code == MN_SUB && mfmp->parent_fmp)));

END:
    EXIT_NOERRH(fn);
    return(retval);
}