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_WOnTop( ) API Library Routine

  • Articolo

Returns the WHANDLE of the active window.

WHANDLE _WOnTop(void any)
void any;                     /* Pointer. */

Remarks

Normally, keystrokes belong to the active window. Handler routines need to act appropriately.

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 displays position information about the active window.

Visual FoxPro Code

SET LIBRARY TO WONTOP
=WPOSITION()

C Code

#include <pro_ext.h>

void putLong(long n, int width)
{
   Value val;

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

   _PutValue(&val);
}
void FAR Example(ParamBlk FAR *parm)
{
   WHANDLE wh = _WOnTop();

   _PutStr("\ntop   ="); putLong(_WTop(wh), 5);
   _PutStr("\nleft ="); putLong(_WLeft(wh), 5);
   _PutStr("\nbottom ="); putLong(_WBottom(wh), 5);
   _PutStr("\nright  ="); putLong(_WRight(wh), 5);
}

FoxInfo myFoxInfo[] = {
   {"WPOSITION", Example, 0, ""},
};
FoxTable _FoxTable = {
   (FoxTable FAR *) 0, sizeof(myFoxInfo)/sizeof(FoxInfo), myFoxInfo
};

See Also

_WSendBehind( ) API Library Routine | _WShow( ) API Library Routine | _WTop( ) API Library Routine | Accessing the Visual FoxPro API