Added a window within the stdscr, which is used for printing the text, as well as another 'status window'

editor.c

@@ -10,6 +10,8 @@
 #define ctrl(x) ((x) & 0x1f)
 
 int index_to_start = 0;
+WINDOW* mainwin;
+WINDOW* statusbar;
 
 typedef struct Buffer_struct Buffer;
 struct Buffer_struct {
@@ -104,6 +106,10 @@ void scroll_page_down_handler(Buffer* buffer) {
 }
 
 void page_down_handler(Buffer* buffer) {
+	if ((getcury(mainwin) + 1) == getmaxy(mainwin)) {
+		scroll_page_down_handler(buffer);
+	}
+
 	buffer_right(buffer); /* I must advance the cursor at least 
 				once, so this hardcoded statement is fine. */
 
@@ -112,10 +118,6 @@ void page_down_handler(Buffer* buffer) {
 		buffer_right(buffer);
 	}
 
-	if ((getcury(stdscr) + 1) == getmaxy(stdscr)) {
-		scroll_page_down_handler(buffer);
-	}
-
 	/* You would think that I need to call 'buffer_right' once 
 	more, to advance the cursor onto the next line.	In fact, if 
 	you think about it, the place where the cursor (the rectangle) 
@@ -150,7 +152,7 @@ void page_up_handler(Buffer* buffer) {
 	}
 
 
-	if ((getcury(stdscr) == 0) && (index_to_start > 0)) {
+	if ((getcury(mainwin) == 0) && (index_to_start > 0)) {
 		scroll_page_up_handler(buffer);
 	}
 
@@ -183,8 +185,17 @@ void save_text_helper(Buffer* buffer,char* filename) {
 
 void init_curses() {
 	initscr();
+	mainwin = newwin(getmaxy(stdscr)-1,getmaxx(stdscr),0,0);
+
+	statusbar = newwin(1,getmaxx(stdscr),getmaxy(stdscr)-1,0);
+	wattrset(statusbar,A_REVERSE);
+	mvwhline(statusbar,0,0,' ',getmaxx(statusbar));
+	mvwprintw(statusbar,0,0,"Welcome to Editor!");
+	wrefresh(statusbar);
+
 	noecho();
 	keypad(stdscr,TRUE);
+	keypad(mainwin,TRUE);
 	raw();
 //	scrollok(stdscr,TRUE);
 }
@@ -221,7 +232,7 @@ int main(int argc, char** argv) {
 
 	int y, x;
 	while (true) {
-		clear();
+		wclear(mainwin);
 
 		int i=index_to_start;
 		if ((buffer->start != buffer->text) || (buffer->gap_size != buffer->size)) {  /* We don't want to print the string, if the 
@@ -230,28 +241,30 @@ int main(int argc, char** argv) {
 	                while (i < buffer->size) {
 	                        if ((buffer->start - buffer->text) == i) {  /* If we have encountered 
 										the start of the gap */
-					getyx(stdscr,y,x);
+					getyx(mainwin,y,x);
 	                                i += buffer->gap_size;
 				}
 				if (i >= buffer->size) {
 					break;
 				}
-	                        addch(*(buffer->text + i));
+	                        waddch(mainwin,*(buffer->text + i));
 				i++;
 
-				fprintf(logfile,"At line %d of %d\n",getcury(stdscr),getmaxy(stdscr));
+				fprintf(logfile,"At line %d of %d\n",getcury(mainwin),getmaxy(mainwin));
-				if (*(buffer->text + i) == '\n' && ((getcury(stdscr) + 1) == getmaxy(stdscr))) {
+				if (*(buffer->text + i) == '\n' && ((getcury(mainwin) + 1) == getmaxy(mainwin))) {
 					fprintf(logfile,"Read newline\n");
 					break;
 				}
 	                }
 
-			move(y,x);
+			wmove(mainwin,y,x);
+
+			wrefresh(mainwin);
 
 		}
 
 
-		ch = getch();
+		ch = wgetch(mainwin);
 
 		switch(ch) {
 			case KEY_BACKSPACE:
@@ -287,6 +300,9 @@ int main(int argc, char** argv) {
 				page_up_handler(buffer);
 				break;
 
+			case ctrl(KEY_NPAGE):
+				abort();
+
 			case ctrl('s'):
 				if (argc == 2) {
 					save_text_helper(buffer,argv[1]);