Drawing Tool in Console Application

Question

Drawing Tool
Drawing tool that draws lines and rectangles using ASCII symbols. Lines can be horizontal, vertical or diagonal (45°). If coordinates are not convenient, line cannot be drawn.

In order to draw a line/rectangle;
1.  DrawPoint must be determined first.
DrawPoint represents the start point for line drawing or a corner for rectangle drawing.
Move cursor to the position. Press F7.
2.  Move cursor to the end point for line drawing or opposite corner for rectangle drawing. Press F8/F9.
Please help me.