Use python win32gui for drawing

 

import win32gui from re import match def draw_line(): print 'x1,y1,x2,y2?' s=raw_input() if match('/d+,/d+,/d+,/d+',s): x1,y1,x2,y2=s.split(',') x1=int(x1) y1=int(y1) x2=int(x2) y2=int(y2) hwnd=win32gui.WindowFromPoint((x1,y1)) hdc=win32gui.GetDC(hwnd) x1c,y1c=win32gui.ScreenToClient(hwnd,(x1,y1)) x2c,y2c=win32gui.ScreenToClient(hwnd,(x2,y2)) win32gui.MoveToEx(hdc,x1c,y1c) win32gui.LineTo(hdc,x2c,y2c) win32gui.ReleaseDC(hwnd,hdc) main() def draw_point(): print 'x,y,color?' s=raw_input() if match('/d+,/d+,/d+',s): x,y,color=s.split(',') x=int(x) y=int(y) color=int(color) hwnd=win32gui.WindowFromPoint((x,y)) hdc=win32gui.GetDC(hwnd) x1,y1=win32gui.ScreenToClient(hwnd,(x,y)) win32gui.SetPixel(hdc,x1,y1,color) win32gui.ReleaseDC(hwnd,hdc) main() def get_pixel_col(): print 'x,y?' s=raw_input() if match('/d+,/d+',s): x,y=s.split(',') x=int(x) y=int(y) hwnd=win32gui.WindowFromPoint((x,y)) hdc=win32gui.GetDC(hwnd) x1,y1=win32gui.ScreenToClient(hwnd,(x,y)) color=win32gui.GetPixel(hdc,x1,y1) win32gui.ReleaseDC(hwnd,hdc) print color main() def get_current_pos_info(): x,y=win32gui.GetCursorPos() hwnd=win32gui.WindowFromPoint((x,y)) hdc=win32gui.GetDC(hwnd) x1,y1=win32gui.ScreenToClient(hwnd,(x,y)) print x,y,win32gui.GetPixel(hdc,x1,y1) win32gui.ReleaseDC(hwnd,hdc) main() def main(): print ('''l. draw line p. draw point g. get pixel color c. get current mouse position's info''') s=raw_input() if s.lower()=='l': draw_line() if s.lower()=='p': draw_point() if s.lower()=='g': get_pixel_col() if s.lower()=='c': get_current_pos_info() main()