MQL4 - Lesson 6 - Notes

You can access Jim Dandy's MQL4 youtube course here for free. He also has a website with videos here and here. These are my notes of lesson 6:

Message box and market info

• disable extern string
• enable original comment
• delete show inputs line
• new: message box instead of comment -> shows message box
• message box -> integer type
• at the message's end: …, "vital information" -> topic
• at the end …, 1/2/3 -> different buttons in message box

• int (double spread = market info (symbol(),Mode_Spread); … +DoubleToStr(Spread/10,1)
• marketinfo:
• spread: current spread
• minlot: Smallest lot size allowed
• maxlot: Biggest lotsize
• lotstep: increments to increase the order
• MarginRequired: Margin required to place a full lot trade

Source