Microsoft® Windows® Script Interfaces
IActiveScriptError::GetSourcePosition
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HRESULT GetSourcePosition(
    DWORD *pdwSourceContext,  // context cookie
    ULONG *pulLineNumber,     // line number of error
    LONG *pichCharPosition    // character position of error
);

Retrieves the location in the source code where an error occurred while the scripting engine was running a script.

pdwSourceContext
[out] Address of a variable that receives a cookie that identifies the context. The interpretation of this parameter depends on the host application.
pulLineNumber
[out] Address of a variable that receives the line number in the source file where the error occurred.
pichCharPosition
[out] Address of a variable that receives the character position in the line where the error occurred.

整理:iScripts.org