[Bug-guile-ncurses] wgetch after wresize and mvderwin wrong behaviour

[joseph Dobson]

Hello all.

I am running into a problem with ncurses.

I have a window (the main window) and it has a child derived window. The problem my use-case requires me to move and resize the child window, this works fine using the `wresize` and `mvderwin` functions; except if I perform a `wgetch` on that child window, in which case it places the cursor in the right if the frame hadn't moved, and depending on whether or not I refresh the parent on not, it also print the whole of the window at the old position as well.

The code listing demonstrates the problem I am having:

#include <ncurses.h>

int main() {

        WINDOW *win=initscr();

        int y,x,i=3;

        getmaxyx(win, y, x);

        //creates a sub windows 1 col high

        WINDOW *child=derwin(win, i, x, y-i, 0); 

        //doc says to touch before referesh

        touchwin(win);

        mvwaddstr(child, 1, 1, "hello");

        wrefresh(win); //is this the correct order?

        wrefresh(child);

        box(child, '|', '-');

        while(wgetch(child)!='q') {

                ++i;

                mvderwin(child, y-i, 0);

                wresize(child, i, x);

                touchwin(win); //is this the right place?

                wclear(child);  //redraw content

                mvwaddstr(child, 1, 1,"hello");

                box(child, '|', '-');

                wmove(child, 1, 1);

                wrefresh(win);

                wrefresh(child);

        }

        delwin(child);

        delwin(win);

        endwin();

}

//end code listing

Ncurses version: 5.9

System: arch linux

Compiler: gcc 4.7.2

The only "fix" I have come across with is to destroy the old derived window and create a new one in the desired position, but this is an immense faff for nested structures.

Thanks