_ActivateMenu( ) API Library Routine Example

The following example builds a menu with three items. _ActivateMenu( ) displays the menu. This menu is non-modal in that interaction is not forced as with _MenuInteract( ). Rather, when the user makes a selection the _OnSelection( ) routine is called, the selected item is printed on the screen, and the menu is disposed of.

Visual FoxPro Code

SET LIBRARY TO ACTIMENU
WAIT WINDOW "Make selection from menu." NOWAIT
SUSPEND

C Code

#include <pro_ext.h>

static MENUID menuId;

void putLong(long n)
{
   Value val;

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

   _PutValue(&val);
}

FAR onSelection(long menuId, long itemId)
{
   _PutStr("\nitemId = "); putLong(itemId);
}

FAR deactivateMenu(ParamBlk FAR *parm)
{
   _DeActivateMenu(menuId);
   _DisposeMenu(menuId);
}

FAR activateMenu(ParamBlk FAR *parm)
{
   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);

   _ActivateMenu(menuId);
   _OnSelection(menuId, -1, onSelection);
}

FoxInfo myFoxInfo[] = {
   {"ONLOAD", (FPFI) activateMenu, CALLONLOAD, ""},
   {"ONUNLOAD", (FPFI) deactivateMenu, CALLONUNLOAD, ""},
};

FoxTable _FoxTable = {
   (FoxTable FAR *) 0, sizeof(myFoxInfo)/sizeof(FoxInfo), myFoxInfo
};