Can OB Control Software pop up a message if it detects specific code in the GCode file?

Its not standard functionality. But if you know javascript, you can add it.

I wrote a tool change macro that lets you open multiple files. Part of that looks for tool information and displays what bit to load. I used Peter's early work for tool changes as a starting point since it gave me a clue as to how to parse the loaded file and pull out the info I need. Here's the discussion: Toolchanges · Issue #26 · OpenBuilds/OpenBuilds-CONTROL

And the code: OpenBuilds-CONTROL/toolchange.js at master · OpenBuilds/OpenBuilds-CONTROL

And more info on how to write javascript macros with dialogs and such: Getting started with Javascript Macros in CONTROL / Library of Macros created by the community

 

Ok. Here's a crude way of doing it. It may work for you.

I couldnt find a built in way to listen for just the file open so it listens for a change on the gcode editor tab, which happens when you load a file. It then looks for the first line that contains the text "ALERT:" and displays that line in a dialog. In fusion, you would add a passthrough comment that starts with "ALERT:"

Code:

editor.session.on('change', function(delta) {
  let foundAlert = editor.find('ALERT:');
  if (foundAlert !== undefined) {
    let alertText = editor.session.getLine(foundAlert.start.row);
    var dialog = Metro.dialog.create({
      clsDialog: 'dark',
      title: "<i class='fas fa-exclamation-triangle'></i> ALERT",
      content: "<i class='fas fa-exclamation-triangle fg-darkRed'></i> " + alertText,
      actions: [{
        caption: "Close",
        cls: "js-dialog-close",
        onclick: function() {
          //
        }
      }]
    });   
  }
});

If you use Controls gcode editor to edit the code, this is a terrible solution since it will pop up the dialog with every editing keystroke. Like I said, its crude, but may work for you.

Here's the first few lines of my test gcode:

Code:

(Made in : Autodesk CAM Post Processor)
(G-Code optimized for Grbl 1.1 / BlackBox controller)
(OpenBuilds CNC : GRBL/BlackBox)
(Post-Processor : OpenbuildsFusion360PostGrbl.cps V1.0.30)
(Units = inch)

(Drawing name : Keyhole bracket v2)
(Program Name : 1001)

(1 Operation :)
(1 : 2D Pocket1)
(  Work Coordinate System : G54)
(  Tool 3: Flat End Mill 3 Flutes, Diam = 0.25inch, Len = 0.75inch)
(  Spindle : RPM = 5100)
(  Machining time : 24 sec)

G90 G94 G17
G20

(ALERT: Do this now)
(ALERT: Do this also)

 

Okay. I think I got it. This code will alert on file load but not on user edits.

Code:

function alertMacro() {
  editor.session.on('change', function(e) {
    if (editor.curOp && editor.curOp.command.name) {
      return null;
    }  
    let foundAlert = editor.find('ALERT:');
    if (foundAlert !== undefined) {
      let alertText = editor.session.getLine(foundAlert.start.row);
      console.log('what is pos ' + alertText)    
      var dialog = Metro.dialog.create({
        clsDialog: 'dark',
        title: "<i class='fas fa-exclamation-triangle'></i> ALERT",
        content: "<i class='fas fa-exclamation-triangle fg-darkRed'></i> " + alertText,
        actions: [{
          caption: "Close",
          cls: "js-dialog-close",
          onclick: function() {
            //
          }
        }]
      });
    }    
  });
}

$(document).ready(() => setTimeout(alertMacro, 1000));

Oh, in case you dont know. Add this to a javascript macro and select "Run macro at startup". Restart Control and you should be set.