QuickHash Library Type Library

CRC32_UpdateStr

void CRC32_UpdateStr( [ in,out ]CRC32_Context* pContext, [ in , string ] unsigned char* pSrc );

Parameters

pContext

    [in/out] A memory buffer that is used as the context.

     Note. All predefined types are specified in the Predefined Types List.

 pSrc

    [in] A null-terminated string with which to update the context.

Remarks

Updates (based on CRC32 checksum algorithm) the pContext context with the null-terminated string specified by pSrc. Call this function for each null-terminated string for which the checksum is calculated. To retrieve the checksum after using CRC32_UpdateStr, call CRC32_Final or CRC32_FinalHex.

Note. Before the first call to CRC32_Update, CRC32_UpdateStr, CRC32_Final or CRC32_FinalHex functions, the context must be initialized with CRC32_Init.

VB Example

Private Sub MyButton_Click()   
    Dim Context As CRC32_Context
    Dim Checksum As CRC32_Digest
    Dim MyStrData As String
    MyStrData = "Hello World!"
    'Initialize the context
    CRC32_Init Context
    'Update the context
    CRC32_UpdateStr Context, MyStrData
    'Get the checksum
    CRC32_Final Context, Checksum
    'Show the hexadecimal representation of the checksum
    MsgBox QHASH_ConvertToHex(Checksum.Value(0), CRC32_DIGESTSIZE, True)
End Sub

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See Also    CRC32_Update, CRC32_Final, CRC32_FinalHex, CRC32_Init, QHASH_ConvertToHex


 

 

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