Previous Next        Current Page: NeXtMidas Training / Primitives / Commands executing commands
back
+ Start Here   
+ Background   
+ Common Midas Concepts   
+ Getting Started - Part 1   
+ Getting Started - Part 2   
+ Working with Files   
+ Option Trees   
+ Macros - Part 1 (Basics)   
+ Macros - Part 2 (Graphics)   
+ NetBeans - Part 1 (Setup)   
+ NetBeans - Part 2 (GUIs)   
+ NetBeans - Part 3 (Profiler)   
+ Eclipse - Part 1 (Setup)   
+ Eclipse - Part 2 (GUIs)   
- Primitives   
   + Overview   
   + Open, Process, Close   
   + Building   
   + The NeXtMidas API   
   + Lab 1   
   + Special Variables   
   + Lab 2   
   + Lab 3*   
   + Files in a Primitive   
   + Lab 4   
   + Lab 5*   
   + Test Macros   
   + Lab 6   
   + Real Time Controls   
   + Lab 7   
   + Working with Messages   
   + Lab 8   
   + Primitive Restarts   
   + Introduction to DSP   
   + Lab 9   
   - Commands executing commands   
+ WebStart   
+ Maps & Imagery   
+ X-Midas Interoperability   
+ RMIF & Remoting   
+ Installing NeXtMidas   
+ Support & Maintenance   
+ File Handlers   
  • Primitives calling other primitives or intrinsics
    • There are times when it is helpful to launch another command from within a primitive.
      • One option is using Shell.runCommand(...).
      • An example from plot.java: 
          plotCmd = "PLOT/NICE=0/ID="+cutPlotID+"/BG/READOUT=\"+OnAxis\" "+outFile ;
  Shell.runCommand(M, plotCmd);
      • Another option, added in 3.9.1, is Shell.execBackgroundCommand(...).
        • The execBackgroundCommand(...) returns the command instance
        • This allows the calling primitive further access to the commands methods/fields
        • The '/BG' is automatically added to allow the command to run in the background
        • An example from plot.java: 
            plotPrescaler = (prescaler)Shell.execBackgroundCommand(M,prescalerCmd);
  scaleTable = plotPrescaler.table;
      • Intrinsics can also run other intrinsics.
        • An example from Edit.java: 
            if (build) Shell.runCommand(M,"BLD,"+name+","+area+","+option);

back