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_NewMenu( ) API Library Routine

  • Articolo

Creates a new menu of the specified menu type.

int _NewMenu(int mtype, MENUID menuid)
int mtype;                  /* Menu type. */
MENUID menuid;            /* Menu identifier. */

Remarks

You can specify MPOPUP or MBAR as the mtype parameter. The menu identifier must be unique.

Use _GetNewMenuId( ) to obtain an available menu id. _NewMenu( ) returns 0 if it succeeds in creating a new menu. If it's unsuccessful, _NewMenu( ) returns a negative integer whose absolute value is a Visual FoxPro error number.

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 uses _NewMenu( ) to create a menu.

Visual FoxPro Code

SET LIBRARY TO NEWMENU

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, "\\<2nd item");

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

_ActivateMenu( ) API Library Routine | _GetNewMenuId( ) API Library Routine | _GetNewMenuId( ) API Library Routine | Accessing the Visual FoxPro API