FindDItem
returns dialog item number-1 (or -1 if none)
FindDItem looks down the dialog's item list to determine which item is
located at the specified point. It can be useful in selecting a cursor type to
match the mouse pointer position.
which dialog window you wish to check. It is actually a WindowPtr
thePoint is a point (a mouse position) in the local coordinates of theDialog .
whose enclosing rectangle is at thePoint or -1 if no item is there. If
items overlap, the arithmetically lowest of the item numbers is
returned.
mouse is currently pointing to. The item number is returned whether it is
enabled or not.
Note that TechNote #112 corrects an error in IM. The return value is
0-based, so you must add one to the return value in order to get an item
number for use in subsequent Dialog Manager calls.
is local to the current grafPort; you may need to make sure theDialog is
In the following example, a dialog filter uses this function to change the
cursor to an iBeamCursor while the mouse is pointing at an editText item.
Example
#include <Dialogs.h>
#include
#include
Cursor editCursor;
CursHandle curH;
editCursor = **curH; /* copy image to local variable */
*theItem )
{
short i;
Point mPt;
GetMouse( &mPt ); [TOKEN:12074] theDlg is the active window... */
if ( (i==TEXT_ITM1) || (i==TEXT_ITM2) ) /* is it an editText item ? */
SetCursor( &editCursor );
else
/* ... (etc.) ... */
}