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CvEnterSpan Function

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Marks the beginning of a new span.

Syntax

HRESULT CvEnterSpanW(  
    _In_reads_bytes_(16) PCV_MARKERSERIES pMarkerSeries,   
    _Out_ PCV_SPAN* ppSpan,   
    _In_ PCWSTR pMessage,  
    ...   
    );   
  
HRESULT CvEnterSpanA(  
    _In_reads_bytes_(16) PCV_MARKERSERIES pMarkerSeries,   
    _Out_ PCV_SPAN* ppSpan,   
    _In_ PCSTR pMessage,   
    ...   
    );   
  
HRESULT CvEnterSpanVW(  
    _In_reads_bytes_(16) PCV_MARKERSERIES pMarkerSeries,   
    _Out_ PCV_SPAN* ppSpan,   
    _In_ PCWSTR pMessage,  
    _In_ va_list argList  
    );   
  
HRESULT CvEnterSpanVA(  
    _In_reads_bytes_(16) PCV_MARKERSERIES pMarkerSeries,   
    _Out_ PCV_SPAN* ppSpan,   
    _In_ PCSTR pMessage,   
    _In_ va_list argList  
    );   
  
HRESULT CvEnterSpanExW(  
    _In_reads_bytes_(16) PCV_MARKERSERIES pMarkerSeries,   
    _In_ CV_IMPORTANCE level,   
    _In_ int category,   
    _Out_ PCV_SPAN* ppSpan,   
    _In_ PCWSTR pMessage,   
    ...   
    );   
  
HRESULT CvEnterSpanExA(  
    _In_reads_bytes_(16) PCV_MARKERSERIES pMarkerSeries,   
    _In_ CV_IMPORTANCE level,   
    _In_ int category,   
    _Out_ PCV_SPAN* ppSpan,   
    _In_ PCSTR pMessage,   
    ...   
    );   
  
HRESULT CvEnterSpanExVW(  
    _In_reads_bytes_(16) PCV_MARKERSERIES pMarkerSeries,   
    _In_ CV_IMPORTANCE level,   
    _In_ int category,   
    _Out_ PCV_SPAN* ppSpan,   
    _In_ PCWSTR pMessage,   
    _In_ va_list argList);   
  
HRESULT CvEnterSpanExVA(  
    _In_reads_bytes_(16) PCV_MARKERSERIES pMarkerSeries,   
    _In_ CV_IMPORTANCE level,   
    _In_ int category,   
    _Out_ PCV_SPAN* ppSpan,   
    _In_ PCSTR pMessage,   
    _In_ va_list argList);

Parameters

argList
List of arguments.

category
Category of the span

level
Importance level of the span.

pMarkerSeries
Valid marker series context. Cannot be NULL.

pMessage
Message format string. Cannot be NULL.

ppSpan
Address of the variable which will hold resulting span object. Address cannot be NULL, the variable can have any value.

Return Value

S_OK when the message is successfully written. Error code in case there were any errors. Use SUCCEEDED/FAILED macros to check for error condition.

Requirements

Header: cvmarkers.h

Unicode: CvEnterSpanW, CvEnterSpanVW, CvEnterSpanExW, CvEnterSpanExVW

ANSI: CvEnterSpanA, CvEnterSpanVA, CvEnterSpanExA, CvEnterSpanExVW

See Also

C++ Library Reference