ncurses.h, wprintw doesn't work, even after refresh - c

Question

I'm using the library ncurses, and when I try to call wprintw(), and then do a wrefresh on the right window, it doesn't print anything.
#include <stdio.h>
#include <stdlib.h>
#include <ncurses.h>
int main()
{
WINDOW *winTest; //The window
int rows, cols; //Rows and colums in the terminal
initscr(); //Starting NCurses
raw(); //Calling 'getch()' doesn't wait for '\n'
noecho(); //Doesn't print what's written by user
curs_set(0); //Doesn't display the cursor
getmaxyx(stdscr, rows, cols); //How many rows and colums in stdscr (the terminal)
winTest = newwin(10, 10, rows/2, cols/2); //Creates a square WINDOW at the center of the terminal
mvwprintw(winTest, 0, 0, "Test"); //Prints "Test" on the created window
wrefresh(winTest); //Refreshes so what's done is displayed
getch(); //Pause
delwin(winTest); //Free the memory for winTest
endwin(); //Ends NCurses
return 0;
}
When I execute this, nothing is displayed.
I'm on Ubuntu 14.04 LTS, I compile with gcc:
gcc -g -Wall -Werror -Wpedantic -Wextra -Wformat -o test.exe test.c -lncurses
and I execute in the gnome-terminal.

Answer 1

As explained here, you should replace:
getch();
by:
wgetch(winTest);

Answer 2

I replaced the second pause, getch() with my own pause function: scanf("%*s"); and then it displayed test in the middle like it was supposed to. I think what was happening is it went through both pauses in one go so that you never saw the "Test" because it was deleted as fast as it was created. – Tony Ruth
Thanks to Tony Ruth, who answered my question. Even if I still don't understand why getch() erases what's written, replacing it with scanf("%*s") works fine !
PS: Don't know how to tell this issue is solved :/
EDIT : You can also call 'wgetch(aWindow)' on whatever window, and every windows will be corectly displayed :) (Thank to Ruud, who told it)