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_MenuInteract( ) API Library Routine

  • Articolo

Sets the itemid and the menuid to indicate which menu item was chosen, if any.

int _MenuInteract(MENUID FAR *menuid, ITEMID FAR *itemid)
MENUID FAR *menuid;      /* Pointer to menu identifier. */
ITEMID FAR *itemid;      /* Pointer to menu item identifier. */

Remarks

If the user chooses any menu item, _MenuInteract( ) returns 1. If no item is chosen (for example, if the user presses ESC) _MenuInteract( ) returns 0.

For more information on how to create an API library and integrate it with Visual FoxPro, see Accessing the Visual FoxPro API.

Example

The following example builds a menu with three items, and then requires the user to interact with the menu by calling _MenuInteract( ).

Visual FoxPro Code

SET LIBRARY TO MENUINTE

C Code

#include <pro_ext.h>

void putLong(long n)
{
   Value val;

   val.ev_type = 'I';
   val.ev_long = n;
   val.ev_width = 10;

   _PutValue(&val);
}

FAR GetNewItemId(ParamBlk FAR *parm)
{
   MENUID menuId;
   ITEMID itemId;
   Point loc;

   menuId = _GetNewMenuId();
   _NewMenu(MPOPUP, menuId);

   itemId = _GetNewItemId(menuId);
   _NewItem(menuId, itemId, -2, "\\<1st item");

   itemId = _GetNewItemId(menuId);
   _NewItem(menuId, itemId, -2, "\\<2nd item");

   itemId = _GetNewItemId(menuId);
   _NewItem(menuId, itemId, -2, "\\<3rd item");

   loc.v = 10; loc.h = 20;
   _SetMenuPoint(menuId, loc);

   _MenuInteract(&menuId, &itemId);

   _PutStr("\nmenuId ="); putLong(menuId);
   _PutStr("\nitemId ="); putLong(itemId);

   _DisposeMenu(menuId);
}

FoxInfo myFoxInfo[] = {
   {"ONLOAD", (FPFI) GetNewItemId, CALLONLOAD, ""},
};
FoxTable _FoxTable = {
   (FoxTable FAR *) 0, sizeof(myFoxInfo)/sizeof(FoxInfo), myFoxInfo
};

See Also

_MenuId( ) API Library Routine | Accessing the Visual FoxPro API | _OnSelection( ) | _GetNewMenuId( ) API Library Routine