When you compile a 4DGL file, the compiler generates an executable file with an extension .4XE. When you download the compiled code, the 4XE file gets downloaded to the FLASH or RAM depending on the option selected in the 4D Workshop4 IDE.

When a 4XE program is saved to FLASH, the program will start whenever power is applied.

Note: If #MODE RUNFLASH is added to the start of the program, the program actually executes from FLASH memory. Otherwise, the program in FLASH is loaded into RAM before it is run. A program that is run directly from FLASH runs a little slower than a program run from RAM but has the advantage of leaving the RAM space free for running child programs.

When you compile a 4DGL file that doesn’t have a “Main” Function, a 4FN file is generated as relocatable source code. A 4FN file can be loaded, then called from the Main program that resides in the FLASH memory of the Processor.

It works just like a function and can be discarded when no longer required, freeing up memory. You can also pass arguments to a 4FN file from the Main Program. It can return values to the “Main” Program.

You can return from a 4FN file to the Main Program at the same point where you called the 4FN file.

Note: A good example of this technique can be found in the 4DTETRIS.4DG program which can be browsed through the Samples -> Picaso Designer -> PICASO – DEMO\EXECUTABLESSOURCE

A secondary (CHILD) 4XE file can be saved to the microSD card and called from the Main program that resides in the FLASH. Once loaded, a child 4XE file takes full control and runs from the RAM.

When you reach “Exit” in the 4XE file code, the module goes back to the start-up routine returning control to the Main Program in FLASH, in effect restarting it.

You can pass arguments to a 4XE file from the Main Program. The 4XE File cannot return anything to the Main program.

No, you can’t. You need to call down and return up. You can’t ‘jump’ from one .4XE or .4FN file to another.

Download and install the latest Workshop4 IDE from the link below into the new PC.

Latest Workshop4

1. Use the email address and the password use from the old PC.
2. Click the License Pro button, which will prompt a confirmation message to allow the transfer.
3. Click Yes to proceed.
4. Once done, you can remove the Workshop4 IDE from the old PC.

To validate your Workshop4 Pro license requires an internet connection.

Please ensure that your computer has internet access for validation.

Check your Antivirus or firewall settings if it’s blocking the access of Workshop4 accessing our server.

Note: Common licensing errors can be solved by simply running the latest version of Workshop4. If you are running into any issues, please try updating your Workshop4 to the latest version.

Latest Workshop4