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FreezingFire
Admin Team
Joined: 23 Jun 2002
Posts: 3508
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 Posted: Fri Aug 29, 2003 11:44 pm Post subject: Am I coding this right? |
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I don't think I'm doing this right. Or is there more to this than what
I have?
I'm trying to use the GetComputerName API.
| Code: | %S = 255
loadlib kernel32.dll
%A = @lib(kernel32,GetComputerNameA,BOOL:,@addr("%S"),@addr("%S"))
freelib kernel32.dll
info %A |
And, while trying this and launching the code via the F9 key, I keep
getting this line number, where there's only 4 or 5 lines of code I
wrote  :
| Quote: | ---------------------------
Visual DialogScript 5
---------------------------
Error: Unhandled exception ""
at line: 2292585
in file: Untitled.dsc
---------------------------
OK
--------------------------- |
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FreezingFire
VDSWORLD.com
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CodeScript
Moderator Team
Joined: 08 Jun 2003
Posts: 1060
Location: India
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| Posted: Sat Aug 30, 2003 1:20 am Post subject: |
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FF I think you didn't read the documentation properly.
| Quote: | The GetComputerName function retrieves the computer name of the current system. This name is established at system startup, when it is initialized from the registry.
BOOL GetComputerName(
LPTSTR lpBuffer, // address of name buffer
LPDWORD nSize // address of size of name buffer
);
Parameters
lpBuffer
Points to a buffer to receive the null-terminated character string containing the computer name.
nSize
Points to a variable that specifies the maximum size, in characters, of the buffer. This value should be large enough to contain MAX_COMPUTERNAME_LENGTH + 1 characters. |
____________________________________________________________________
| Code: | %S = @FILL(255)
%L = @BINARY(DWORD,@LEN(%S))
loadlib kernel32.dll
%A = @lib(kernel32,GetComputerNameA,BOOL:,@addr("%S"),@addr("%L"))
freelib kernel32.dll
info @ADJUST(%S) |
I think this *should* work. If not change BOOL: to INT: -looks stupid but sometimes does work 
But I agree that @lib() is having lot of teething problems and much is to be done about error handling -
For it sometimes :
Gives error code when there is none.(missing wend,invalid list operation, invalid style and some french error messages which I can't decipher etc)
Doesnot pass the file/folder path parameter to the dll correctly.
Adds the last bracket ")" in the return value for no reason - command works without the closing bracket - weird ?
BOOL: returns empty value but mostly dll still works. If not then onehas to use INT:, - Documentation says BOOL: type of return value and this works in VB too.
In many instances I thought it was the dll at fault and threw away these freeware dlls but when I encountered these problems with system dll's - I couldn't blame them anymore !.
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- CodeScript
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FreezingFire
Admin Team
Joined: 23 Jun 2002
Posts: 3508
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| Posted: Sat Aug 30, 2003 1:23 pm Post subject: |
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I was totally lost as to what I was doing. Thanks for the help CodeScript!
Now I think I understand better and I'm going to try using the
GetUserName API 
Thanks again 
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FreezingFire
VDSWORLD.com
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