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elfpipe
Window under mouse?
Posted on: 2011/4/14 20:46    #1
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Is there a nice system compliant way of telling which window is currently under the mouse pointer?
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Chris
Re: Window under mouse?
Posted on: 2011/4/14 20:53    #2
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Yes You need something like this:

struct Window *ami_window_at_pointer(void)
{
     struct Layer *layer;
     
     LockLayerInfo(&scrn->LayerInfo);
     
     layer = WhichLayer(&scrn->LayerInfo, scrn->MouseX, scrn->MouseY);
     
     UnlockLayerInfo(&scrn->LayerInfo);
     
     if(layer) return layer->Window;
        else return NULL;
}


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elfpipe
Re: Window under mouse?
Posted on: 2011/4/14 20:58    #3
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@chris

You my savior !

This is really neat when doing drag'n'drop stuff.
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Antique
Re: Window under mouse?
Posted on: 2011/4/14 21:04    #4
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@alfkil

I see you post many different questions here. Mind telling me what you're trying to make?

X5000
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elfpipe
Re: Window under mouse?
Posted on: 2011/4/14 21:46    #5
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@antique

See qt post

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serpi
Re: Window under mouse?
Posted on: 2011/4/15 12:18    #6
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@Chris

Maybe a stupid question, but do I need to know on which screen the mousepointer is?

Or what is "scrn"?

Ciao, Alfred
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Chris
Re: Window under mouse?
Posted on: 2011/4/15 14:21    #7
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scrn is the screen pointer (struct Screen *)
Sorry, should have said that, was a copy'n'paste from NS source code.
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serpi
Re: Window under mouse?
Posted on: 2011/4/18 14:29    #8
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@Chris

So, how do I get the SCREEN where the mousepointer is?

I mean, this is AmigaOS, not Windows

Ciao, Alfred
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Chris
Re: Window under mouse?
Posted on: 2011/4/18 14:49    #9
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@serpi

I don't know. Presumably there is another Layer_Info structure somewhere which holds the screens.

My code only works across one screen, it would be useful to find which screen the pointer is over in order to support drags across screens, I agree!
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whose
Re: Window under mouse?
Posted on: 2011/4/18 18:38    #10
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AFAIK the only screen the mousepointer can be _seen_ over is the frontmost one And there is no concept like "inactive screen" in Intuition so far.

Im not on my Amiga right now, but AFAIR this information can be found in IntuitionBase structure, some structure member called FirstScreen or similar. There is a member for the active window (the one holding the input focus, not necessarily located on the frontmost screen, btw.), too, IIRC.

Oh, and dont forget to lock IntuitionBase first!

Edit: Uh oh, Im not right with my first sentence. There are indeed more screens possible. One has to calculate the screen offset into this! This means, if there occurs screen dragging, the screen the mouse is over could be one that is seen in the "background"! One has to check, if one of the possible screens (there is a list of all screens opened atm. one traverses locked IntuitionBase, dont know its name atm.) has its bounds hit by the mouse pointer "hot spot" in order to get the right screen the mouse is over. The bounds result from all screen´s offset differences. E.g. frontmost screens offset is 20, screen behind has offset 0, so the background screen´s bounds are 20 x screen width (roughly. There is more information in Intuition includes).


Edited by whose on 2011/4/18 18:54:25
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centaurz
Re: Window under mouse?
Posted on: 2011/4/18 22:49    #11
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@serpi

IntuitionBase->ActiveScreen
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