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CommandLineToArgvW info  Overview  Group

The CommandLineToArgvW function parses a wide-character Unicode command-line string. It returns a pointer to a set of wide-character Unicode argument strings and a count of arguments, similar to the standard C run-time argv and argc values. The function provides a way to obtain a Unicode set of argv and argc values from a Unicode command-line string.

LPWSTR * CommandLineToArgvW(

    LPCWSTR lpCmdLine,

// pointer to a command-line string

    int *pNumArgs 

// pointer to a variable that receives the argument count



Pointer to a null-terminated Unicode command-line string. An application will usually directly pass on the value returned by a call to GetCommandLineW.
Pointer to an integer variable that the function sets to the count of arguments parsed.

Return Values

If the function succeeds, the return value is a non-NULL pointer to the constructed argument list, which is a set of Unicode wide-character argument strings.

If the function fails, the return value is NULL. To get extended error information, call GetLastError.


It is the callerís responsibility to free the memory used by the argument list when it is no longer needed. To free the memory, use a single call to either the GlobalFree or LocalFree function.

See Also

GetCommandLine, GlobalFree, LocalFree

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