I'm trying to figure out a way to create a looping alert that won't shut off until I click a button on the MT4. I need it to continuously loop forever until it's disabled. I'm using my MT4 to wake me up during the night when the price hits a certain target, but to do that I need to have my MT4 play a custom audio file that simulates a train horn (don't ask lol). I couldn't find any utilities in the marketplace to help me with this. Also, the Alert function on MT4 isn't suitable for what I need because it only plays the alert for 1 min and then automatically shuts off, no matter how long the .wav file is.
Have you tried?
When there is an alert, place a button on the chart.
Sound the alert using OnTimer()
Click the button to kill the timer and delete the button.
When you do the alert edit the alert to play a file and create a batch file to play your longer WAV or MP4 file. then it will play as long as you want.
batch file can be as simple as
This will curcumvent the 1 hour time limit.