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JimmXinu · 06-10-2025, 06:24 PM

My plugins use self.gui.status_bar.show_message(msg) in a number of places to indicate what's going on without throwing up a dialog. Things like "Fetching email..." and "Get stuff from web page..." and frequently a matching "Finished Fetching whatever" message when it's done, with a timeout of a few seconds.

I know that all worked when I put them in--and I admit that was a long time ago.

I've noticed more recently that the 'Finished' messages appear, but not the 'Fetching' messages.

Experimentation indicates that status_bar.show_message() calls don't update the GUI until my action/function returns back to Qt/Calibre. If I turn on notifications, I do get all the messages there.

So I suspect that Qt is not updating the status_bar widget until the GUI thread gets back to it's control.

I can brute-force it by calling status_bar.repaint() in my code, or adding a repaint call in src/calibre/gui2/init.py:237. (In both cases, the timeout isn't honored anymore.)

Kovid, would you accept a PR add repaint() like that? Is there a better fix?

FYI, I'm using Cal 8.4 on Win10.

06-10-2025, 06:24 PM	#1
JimmXinu Plugin Developer Posts: 6,980 Karma: 4604635 Join Date: Dec 2011 Location: Midwest USA Device: Kobo Clara Colour running KOReader	Status Bar Show Message My plugins use self.gui.status_bar.show_message(msg) in a number of places to indicate what's going on without throwing up a dialog. Things like "Fetching email..." and "Get stuff from web page..." and frequently a matching "Finished Fetching whatever" message when it's done, with a timeout of a few seconds. I know that all worked when I put them in--and I admit that was a long time ago. I've noticed more recently that the 'Finished' messages appear, but not the 'Fetching' messages. Experimentation indicates that status_bar.show_message() calls don't update the GUI until my action/function returns back to Qt/Calibre. If I turn on notifications, I do get all the messages there. So I suspect that Qt is not updating the status_bar widget until the GUI thread gets back to it's control. I can brute-force it by calling status_bar.repaint() in my code, or adding a repaint call in src/calibre/gui2/init.py:237. (In both cases, the timeout isn't honored anymore.) Kovid, would you accept a PR add repaint() like that? Is there a better fix? FYI, I'm using Cal 8.4 on Win10.