Differences
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reference:lp0606 [2009/08/02 16:28] don created |
reference:lp0606 [2010/01/17 22:19] (current) don |
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| - | ====== 6.06 Event Processing ====== | + | ====== 6.06 External Calls ====== |
| - | ===== ON ===== | + | ===== EXEC Command ===== |
| === Function: === | === Function: === | ||
| - | Set up conditions for event handling. | + | Loads a secondary copy of the system shell and executes a program or a shell command. |
| === Syntax: === | === Syntax: === | ||
| - | ON ERROR [CALL] label | + | EXEC cmdstr |
| - | ON INKEY [CALL] label | + | |
| - | === Processing: === | + | |
| - | When an event occurs that is being trapped control is passed to the label in the relevant ON statement. | + | |
| - | The called routine uses RESUME or RETURN to continue. | + | where: |
| + | = cmdstr | ||
| + | : Shell specific command string | ||
| + | |||
| + | After the specified shell command or program terminates, control is returned to the line following the EXEC command. | ||
| + | |||
| + | ===== EXEC Function ===== | ||
| + | === Function: === | ||
| + | EXEC(command) | ||
| + | EXEC() is the function version of the EXEC command. The difference is that the EXEC function returns an array containing the output of the 'command' where each element is a text line from the called program. | ||
| + | |||
| + | //**Windows:**// The stdout and stderr are separated! First is stdout output and then stderr. | ||
| + | |||
| + | ===== Page Links ===== | ||
| + | | <= [[lp0605]] | | [[start]] | | [[lp0607]] => | | ||
