XGetWindowAttributes to get the cursor?

[Ivan Svirid]

"Effectively, if your 3rd party app defines a custom pixmap cursor whose ID
is not a constant, you cannot retrieve it.

Yea I know thats why I asked on the mailing list this question haha.

Thanks I guess..

On Sat, Nov 21, 2020 at 7:19 AM Lucien Gentis <
lucien.gentis at univ-lorraine.fr> wrote:

> Effectively, if your 3rd party app defines a custom pixmap cursor whose ID
> is not a constant, you cannot retrieve it.
>
> Or perhaps if you test this cursor comparing it with all constant values
> enumerated in cursorfont.h, if it does not correspond with any of these, it
> could be your 3rd party app window.
>
> Sorry, but I can't help you more.
>
> Lucien
> Le 20/11/2020 à 19:22, Ivan Svirid a écrit :
>
> The whole point is a random 3rd party app makes a custom pixmap cursor,
> and I was wondering if there is a call to retrieve
> the cursor the 3rd party window I have no control over has defined. With
> the intention to get the XImage backing it
> and copy the pixels.
>
> On Fri, Nov 20, 2020 at 1:11 PM Lucien Gentis <
> lucien.gentis at univ-lorraine.fr> wrote:
>
>> Don't you know the ID of your custom pixmap cursors ?
>>
>> If you do, you can add them to the cases of the switch.
>> Le 20/11/2020 à 15:22, Ivan Svirid a écrit :
>>
>> Yea but this does not work with custom pixmap cursors that are not part
>> of the system cursor theme.
>>
>> On Fri, Nov 20, 2020 at 7:05 AM Lucien Gentis <
>> lucien.gentis at univ-lorraine.fr> wrote:
>>
>>> In fact, cursor id are defined in cursorfont.h like XC_top_left_corner,
>>> XC_double_arrow,...
>>> Le 20/11/2020 à 12:42, Lucien Gentis a écrit :
>>>
>>> You can write a function which uses XTestCompareCursor in a switch which
>>> tests known cursor id (top_left_corner, h_double_arrow,...)
>>> Le 19/11/2020 à 19:59, Ivan Svirid a écrit :
>>>
>>> Yea but this only returns true/false it does not return the cursor_id.
>>>
>>> On Thu, Nov 19, 2020 at 10:26 AM Lucien Gentis <
>>> lucien.gentis at univ-lorraine.fr> wrote:
>>>
>>>> Hello,
>>>>
>>>> Perhaps you should look at XTest extension :
>>>> https://www.x.org/releases/X11R7.7/doc/xextproto/xtest.html
>>>>
>>>> See XTestCompareCursor function
>>>> Le 04/11/2020 à 19:25, Ivan Svirid a écrit :
>>>>
>>>> So XSetWindowAttributes allows you to set the cursor on the window,
>>>> basically this is the hardware cursor when your mouse enters the window
>>>> that is displayed.
>>>>
>>>> Is there a way to readback this value from an existing window? Or
>>>> perhaps another workaround to get the cursor on a specific window?
>>>>
>>>> I am aware there is XFixesSelectCursorInput but this listens for
>>>> changes and grabs the current system cursor; not on a per window basis.
>>>>
>>>>
>>>>
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