SDL2 port missing support for PDC_PRESERVE_SCREEN about pdcurses HOT 4 CLOSED

PDC_PRESERVE_SCREEN is about preserving the content of the original terminal window, from before PDCurses starts rendering. In the case of SDL, as well as X, PDCurses creates a new window, so this option has no meaning. The omission is intentional.

I don't understand what you're talking about with flickering.

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Not having it causes my SDL window to flicker when I shutdown/init pdcurses during a resize. This is the best way I have found to support smooth resizing using pdcurses, calling delwin/initscr to update pdcurses about the new screen size. Calling resize_term isn't an option because it returns ERR because I have pdc_ownwindow = false.

PDC_PRESERVE_SCREEN is about preserving the content of the original terminal window, from before PDCurses starts rendering.

I get that's the intent, but I'm having to insert a SP->_preserve = true into the source code of pdcurses so I don't get the flickering during initscr. Unless you have any other ideas, I brought this issue up so I could call delwin/initscr during a resize event and not get a bunch of screen flickering due to the clear/refresh calls caused by calling initscr.

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Just guessing here, but... if you remove the lines

if( !pdc_own_window)
    return ERR;

from PDC_resize_screen() (i.e., tell PDCurses : "Go ahead and resize this window, even though it's not one PDCurses made"), do you get the desired effect (lack of flicker)? It seems as if it ought to work. I can see why using the SP->_preserve flag would also work, but it seems kludgey.

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Closing as no longer an issue, I revamped my resize so I don't remember this anymore and the arguments from @Bill-Gray encourage me to close this.

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