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In ARCO it is possible to create, read and delete entries in the Windows Registry, in this way the user can have specific '''environmental [[variables]]''' for his use.<br/>

==Setting and Reading Environmental Variable==
This is used to set general [[variable]] that can be read from all the different part programs.<br/>
The typical use is to set a path to copy result files from all the programs.<br/>
An example of application is:<br/>

*From one part program the program set the environment folder:

::<code><span style="color: green; text-decoration: none;">$$ Declare the base Variable</span><br/></code>
::::<CODE>DECL/CHAR,200, STR1</code>
::::<CODE>STR1=ASSIGN/'C:\Report Folder')</code>
::<code><span style="color: green; text-decoration: none;">$$ Use the command SETENV/ to create the entry in the registry</span><br/></code>
::::<CODE>SETENV/'MY_REPORT_FOLDER', STR1</code>


*From all the other programs the program read the folder and output there:
::<code><span style="color: green; text-decoration: none;">$$ Declare the base Variable</span><br/></code>
::::<CODE>DECL/CHAR,200, STR2</code>
::<code><span style="color: green; text-decoration: none;">$$ Use the command GETENV/ to read the entry from the registry</span><br/></code>
::::<CODE>STR2=ASSIGN/GETENV('MY_REPORT_FOLDER')</code>

::<code><span style="color: green; text-decoration: none;">$$ Declare the base , the dummy point, the tolerances and build the output</span><br/></code>
::::<CODE>DECL/CHAR,200, STR2</code>
::::<CODE>DECL/CHAR,200, STR3</code>
::::<CODE>STR3=ASSIGN/CONCAT(str2,'output.mea')</code>
::::<CODE>DID(OUT_FILE)=DEVICE/STOR,STR3</code>
::::<CODE>F(q)=FEAT/POINT,CART,00,0,0,0,0,1</code>
::::<CODE>FA(q)=FEAT/POINT,CART,00,0,0,0,0,1</code>
::::<CODE>T(CORTOL_1)=TOL/CORTOL,XAXIS,-0.1000,0.1000</code>
::::<CODE>T(CORTOL_2)=TOL/CORTOL,YAXIS,-0.1000,0.1000</code>
::::<CODE>T(CORTOL_3)=TOL/CORTOL,ZAXIS,-0.1000,0.1000</code>
::::<CODE>OPEN/DID(OUT_FILE),FDATA,V(TEXT),OUTPUT,OVERWR</code>
::::::<CODE>OUTPUT/FA(Q),TA(CORTOL_1),TA(CORTOL_2),TA(CORTOL_3)</code>
::::<CODE>CLOSE/DID(OUT_FILE)</code>

==Deleting Environmental Variable==
This is used to clean an Environmental general [[Variable]] that has been previously set.<br/>
An example of application is:<br/>

*From one part program we set the environment folder:<br/>
::<code><span style="color: green; text-decoration: none;">$$ Declare the base Variable</span><br/></code>
::::<CODE>DECL/CHAR,200, STR1</code>
::::<CODE>STR1=ASSIGN/'C:\Report Folder')</code>
::<code><span style="color: green; text-decoration: none;">$$ Use the command SETENV/ to create the entry in the registry</span><br/></code>
::::<CODE>SETENV/'MY_REPORT_FOLDER', STR1</code>

*From another part program we clear the environment folder:<br/>
::<code><span style="color: green; text-decoration: none;">$$ Use the command DELENV/ to remove the entry from the registry</span><br/></code>
::::<code>DELENV/'MY_REPORT_FOLDER'</code>


[[it:Gestione della variabile ambientale]]
[[zh-cn:处理环境变量]]
[[pt:Manipulando Variável Ambiental]]
[[de:Umgang mit Umgebungsvariablen]]
[[es:Manejo de variable ambiental]]
[[en:Handling Environmental Variable]]