I wish to identify which monitor is which in the array.
All monitors names return the same “Generic PnP Monitor”
I was considering using virtual cords but if the something changes with the OS setup then it is possible that the monitors virtual cords could change and identification in this way breaks.
Windows identifies each monitor with a number and this number remains the same boot after reboot.
The GLFW says the pointer and array ordinal may change at each disconnection/reconnect or reboot.
Is it possible for GLFW to provide a persistent unique identifier?
I am simply looking for a way to identify each monitor so saved setups can be aplied to their respective monitor each time.
In my experience the GLFW number doesn’t change between reboots if the monitors are on at time of program startup. A more robust way to identify the monitors with the current interface would be to compare (or make a hash of & compare) the properties which don’t change - max resolution/refresh, physical size, name, and also compare virtual position as a secondary check for monitors which are otherwise equivalent.
Hi there, just out of curiosity, is there an update on the topic?
Or alternatively is there example how to do the hash function on monitors?
Do you see any benefit using the hash and not the monitor’s position?
It seems that right now the best method to identify the monitor is to read the position of the monitor relative to the primary?
I’m planning potentially to identify a case where several monitors has the same name, and then I fall back to choose by location.
Lastly, I looked around and it seems that there is a way in both windows and linux to get the EDID from which you can extract the serial number of the monitor I’m planning to look at it in the near future, let me know if it is of interest here.
Thanks!
Not that I’m aware of - certainly the linked issue has no more updates.
I haven’t had a look at this issue myself so can’t say.
Yes, for now that’s probably the best approach.
A monitor ID of some form would likely be of interest as a PR. Take a look at the GLFW contributing guide for more information and I would post in the linked issue above to get feedback.
