MID$ Problem

[Peter Maroudas Member Find all posts View Profile Close Peter Maroudas]

Hi to all

Can someone confirm this test for me
when run Pkt will not display anything (blank)
but if I change the position to 1 instead of 2
MID$(Pkt,1) = "Test" then it will Work.

Its fine in PBCC501 but don't get the same result using
PBWin9/8. I was trying to build up a String with various Characters
in various positions, it would not display anything till the Position number
was 1.

FUNCTION Test ()  AS LONG
    LOCAL Pkt        AS STRING * 10
 
    MID$(Pkt,2) = "Test"
    MSGBOX Pkt
 
END FUNCTION

[Bob Zale Creator of PowerBASIC Find all posts View Profile Close Bob Zale]

You have created a string where the first byte is a nul: CHR$(0). The MessageBox function in the Windows API stops displaying when it finds a nul. Consequently, it displays nothing.

Best regards,

Bob Zale

[Peter Maroudas Member Find all posts View Profile Close Peter Maroudas]

Thank You Sir, it all makes sense now.