Functions
All built-in PowerScript functions return a value. You can
use the return value or ignore it. User-defined functions and external
functions might or might not return a value.
To use a return value, assign it to a variable of the appropriate
datatype or call the function wherever you can use a value of that
datatype.
Posting a function
If you post a function, you cannot use its return value.
Examples
The built-in Asc function takes a string
as an argument and returns the Unicode code point value of the string’s
first character:
|
1 |
string S1 = "Carton"<br>long Test<br>Test=32+Asc(S1)   // Test now contains the value 99 |
|
1 |
                 // (the code point value of "C" is 67). |
The SelectRow function expects a row number
as the first argument. The return value of the GetRow function
supplies the row number:
|
1 |
dw_1.SelectRow(dw_1.GetRow(), true) |
To ignore a return value, call the function as a single statement:
|
1 |
Beep(4)       // This returns a value, but it is <br>               // rarely needed. |
Document get from Powerbuilder help
Thank you for watching.
Subscribe
Login
0 Comments
Oldest