Re: What is the correct way to response to the wxEVT_DPI_CHANGED event?

On Sunday, April 2, 2023 at 8:06:24 PM UTC+8 Maarten Bent wrote:

Hi,

Using 0 as the window parameter will indeed cause it to use the DPI of the 
main display.
I think I couldn't reproduce because I moved FromDIP(wxSize(250,50)); 
(without the 0) to a separate line so I could debug the return values.

You are allowed to call FromDIP/ToDIP with a nullptr window, wxWidgets 
internally does it too.
So I'm not sure if something like wxLogDebug("Determining DPI without a 
valid wxWindow"); can be added.

Maarten


Hi,  Maarten, thanks for the reply.
Indeed, a C++ statement has too many braces may cause errors, so it is more 
safe to changed some sub-function calls to a separate line.
Also, I think the wxLogDebug message is OK, and it could avoid some kinds 
of error like I did.

Asmwarrior

-- 
Please read https://www.wxwidgets.org/support/mlhowto.htm before posting.
--- 
You received this message because you are subscribed to the Google Groups "wx-users" group.
To unsubscribe from this group and stop receiving emails from it, send an email to [email protected].
To view this discussion on the web visit https://groups.google.com/d/msgid/wx-users/e29f567f-37f7-4f28-a7d5-4663e496adean%40googlegroups.com.