Make indicator for mt4 and mt4 based on rectangles green and red, give source code #4

Choose color for fill rectangles 1 and for 2 

Add to chart rectangle (color 1 or color 2) in mode for correct size (button on chart price)

Example:

red rectangle for udpating only for new current low

green rectangle for udpating only for new current high

When correct size with mouse - not move with price and update by low or high and we can move it left right ip and down, 

after it is OK - rectanngle move for update and move right with price, search new high (green rectangle) or low (red rectangle) on price from place correcting size

We also can correcting (enter in mode correct for current rectangle)

Color 1 is udpated only by new low

Color 2 is udpated only by new high

Delete last added (button on chart price)

Delete all (button on chart price)

Opacity change 50%-10%

N bars for make shift right (right then 0 bar), because rect is move right with price.

=====

Alert:

Sound - true / false

Message box window - true / false

----

Full task after aplly