// simple curses example; keeps drawing the inputted characters, in columns // downward, shifting rightward when the last row is reached, and // wrapping around when the rightmost column is reached #include <curses.h> // required int r,c, // current row and column (upper-left is (0,0)) nrows, // number of rows in window ncols; // number of columns in window void draw(char dc) { move(r,c); // curses call to move cursor to row r, column c delch(); insch(dc); // curses calls to replace character under cursor by dc refresh(); // curses call to update screen r++; // go to next row // check for need to shift right or wrap around if (r == nrows) { r = 0; c++; if (c == ncols) c = 0; } } int main() { int i; char d; WINDOW *wnd; wnd = initscr(); // curses call to initialize window cbreak(); // curses call to set no waiting for Enter key noecho(); // curses call to set no echoing getmaxyx(wnd,nrows,ncols); // curses call to find size of window clear(); // curses call to clear screen, send cursor to position (0,0) refresh(); // curses call to implement all changes since last refresh r = 0; c = 0; while (1) { d = getch(); // curses call to input from keyboard if (d == 'q') break; // quit? draw(d); // draw the character } endwin(); // curses call to restore the original window and leave }
