1. PtInRect return value always zero....
- Posted by euman at bellsouth.net
Aug 17, 2001
Hello,
I need help with this, it doesnt seem to work at all...
</snip>
c_proc(xGetCursorPos, {pt} )
junk = c_func(xScreenToClient, {hwnd, pt})
c_proc(xGetWindowRect, {cntrl_id, rect}
junk = c_func(xPtInRect, {rect, pt})
<snip\>
First I retrieve the CursorPos and convert this to ClientCoords
next, I retrieve the WindowRect which sets (rect) the coords to
ctrl_id and test to see if the ClientCoord (pt) resides within
WindowRect (rect) with xPtInRect..
Very Simple and should work according to MS.... ;-0
hwnd and ctrl_id's handle, rect and pt address's are aquired already
and, are valid id's and address's
I traced this out by peeking the pt and rect values and
according to the info I recieved and, the position of the Cursor
relative to the ctrl_id area junk @ xPtInRect should be nonzero
but, it always returns zero.
Anyone faced this problem?
It's really a trivial problem, I have a method that works for what I need
to accomplish at the moment so, no-one strain for an answer..
Euman
euman at bellsouth.net
2. Re: PtInRect return value always zero....
- Posted by euman at bellsouth.net
Aug 17, 2001
Before I get 1000 replies telling me to drop the
junk = c_func(xScreenToClient, {hwnd, pt})
there is a reason for this, I hadnt explained yet.
Just know that my WindowRect is 0, 0 rect_left / top
Later,
Euman
euman at bellsouth.net
> Hello,
>
> I need help with this, it doesnt seem to work at all...
>
> </snip>
>
> c_proc(xGetCursorPos, {pt} )
>
> junk = c_func(xScreenToClient, {hwnd, pt})
>
> c_proc(xGetWindowRect, {cntrl_id, rect}
>
> junk = c_func(xPtInRect, {rect, pt})
>
> <snip\>
>
> First I retrieve the CursorPos and convert this to ClientCoords
> next, I retrieve the WindowRect which sets (rect) the coords to
> ctrl_id and test to see if the ClientCoord (pt) resides within
> WindowRect (rect) with xPtInRect..
>
> Very Simple and should work according to MS.... ;-0
>
> hwnd and ctrl_id's handle, rect and pt address's are aquired already
> and, are valid id's and address's
>
> I traced this out by peeking the pt and rect values and
> according to the info I recieved and, the position of the Cursor
> relative to the ctrl_id area junk @ xPtInRect should be nonzero
> but, it always returns zero.
>
> Anyone faced this problem?
>
> It's really a trivial problem, I have a method that works for what I need
> to accomplish at the moment so, no-one strain for an answer..
>
> Euman
> euman at bellsouth.net
>
>
>
>
>
3. Re: PtInRect return value always zero....
----- Original Message -----
From: <euman at bellsouth.net>
To: "EUforum" <EUforum at topica.com>
Subject: PtInRect return value always zero....
>
> Hello,
>
> I need help with this, it doesnt seem to work at all...
>
> </snip>
>
> c_proc(xGetCursorPos, {pt} )
>
> junk = c_func(xScreenToClient, {hwnd, pt})
>
> c_proc(xGetWindowRect, {cntrl_id, rect}
>
> junk = c_func(xPtInRect, {rect, pt})
>
> <snip\>
>
> First I retrieve the CursorPos and convert this to ClientCoords
> next, I retrieve the WindowRect which sets (rect) the coords to
> ctrl_id and test to see if the ClientCoord (pt) resides within
> WindowRect (rect) with xPtInRect..
>
> Very Simple and should work according to MS.... ;-0
>
> hwnd and ctrl_id's handle, rect and pt address's are aquired already
> and, are valid id's and address's
>
> I traced this out by peeking the pt and rect values and
> according to the info I recieved and, the position of the Cursor
> relative to the ctrl_id area junk @ xPtInRect should be nonzero
> but, it always returns zero.
>
> Anyone faced this problem?
>
> It's really a trivial problem, I have a method that works for what I need
> to accomplish at the moment so, no-one strain for an answer..
>
> Euman
> euman at bellsouth.net
>
I think I've worked this one out, finally.
I believe the problem is that the parameters being passed are wrong.
According to the SDK docs, you need to pass the address of a RECT structure
and a POINT structure. Note, it is not the address of the POINT, but the
actual POINT structure itself.
So may this is more like what is required...
atom x,y
x = peek4u(pt)
y = peek4u(pt+4)
junk = c_func(xPtInRect, {rect, x, y})
------
Derek
4. Re: PtInRect return value always zero....
- Posted by euman at bellsouth.net
Aug 22, 2001
> From: <euman at bellsouth.net>
> > Hello,
> >
> > I need help with this, it doesnt seem to work at all...
> >
> > </snip>
> >
> > c_proc(xGetCursorPos, {pt} )
> >
> > junk = c_func(xScreenToClient, {hwnd, pt})
> >
> > c_proc(xGetWindowRect, {cntrl_id, rect}
> >
> > junk = c_func(xPtInRect, {rect, pt})
> >
> > <snip\>
> >
> > First I retrieve the CursorPos and convert this to ClientCoords
> > next, I retrieve the WindowRect which sets (rect) the coords to
> > ctrl_id and test to see if the ClientCoord (pt) resides within
> > WindowRect (rect) with xPtInRect..
> >
> > Very Simple and should work according to MS.... ;-0
> >
> > hwnd and ctrl_id's handle, rect and pt address's are aquired already
> > and, are valid id's and address's
> >
> > I traced this out by peeking the pt and rect values and
> > according to the info I recieved and, the position of the Cursor
> > relative to the ctrl_id area junk @ xPtInRect should be nonzero
> > but, it always returns zero.
> >
> > Anyone faced this problem?
> >
> > It's really a trivial problem, I have a method that works for what I need
> > to accomplish at the moment so, no-one strain for an answer..
> >
> > Euman
> > euman at bellsouth.net
> >
>
> I think I've worked this one out, finally.
>
> I believe the problem is that the parameters being passed are wrong.
> According to the SDK docs, you need to pass the address of a RECT structure
> and a POINT structure.
> Note, it is not the address of the POINT, but the
> actual POINT structure itself.
Your very observant, I thought about this for about 10 minutes
after I wrote the question and dropped it because I used Euphoria's
internal methods which prove to be really fast and do the job..
Thanks Derek, I really didnt think anyone would get this one.
>
> So may this is more like what is required...
>
> atom x,y
> x = peek4u(pt)
> y = peek4u(pt+4)
> junk = c_func(xPtInRect, {rect, x, y})
>
> ------
> Derek
5. Re: PtInRect return value always zero....
- Posted by euman at bellsouth.net
Aug 22, 2001
> So may this is more like what is required...
>
> atom x,y
> x = peek4u(pt)
> y = peek4u(pt+4)
> junk = c_func(xPtInRect, {rect, x, y})
>
> ------
> Derek
I decided to try your theory and PtInRect only excepts two arguments
maybe I'll play with this some and see if I can get it to work...
Euman
euman at bellsouth.net
6. Re: PtInRect return value always zero....
- Posted by euman at bellsouth.net
Aug 22, 2001
Ok, I changed this and it does work now
Thanks Derek..
xPtInRect = link_c_func(user32,"PtInRect",{C_POINTER,C_INT,C_INT},C_UINT)
Euman
euman at bellsouth.net
