(Unicode C) Add S/MIME Signature using PFX

Add a digital signature to a MIME message using the certificate + private key from a PFX file.

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#include <C_CkMimeW.h>
#include <C_CkCertW.h>

void ChilkatSample(void)
    {
    HCkMimeW mime;
    HCkCertW cert;
    const wchar_t *pfxFilepath;
    const wchar_t *pfxPassword;
    BOOL success;

    // This example requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    mime = CkMimeW_Create();

    // Load a PFX file into a certificate object.
    cert = CkCertW_Create();
    pfxFilepath = L"pfxFiles/something.pfx";
    pfxPassword = L"secret";
    success = CkCertW_LoadPfxFile(cert,pfxFilepath,pfxPassword);
    if (success == FALSE) {
        wprintf(L"%s\n",CkCertW_lastErrorText(cert));
        CkMimeW_Dispose(mime);
        CkCertW_Dispose(cert);
        return;
    }

    success = CkMimeW_SetBodyFromPlainText(mime,L"This is the plain-text MIME body.");

    CkMimeW_putCharset(mime,L"utf-8");
    CkMimeW_putEncoding(mime,L"quoted-printable");

    // Sign the MIME (adds a PKCS7 detached signature)
    success = CkMimeW_AddDetachedSignature(mime,cert);
    if (success == FALSE) {
        wprintf(L"%s\n",CkMimeW_lastErrorText(mime));
        CkMimeW_Dispose(mime);
        CkCertW_Dispose(cert);
        return;
    }

    // Save the S/MIME to a file.
    success = CkMimeW_SaveMime(mime,L"/temp/signedMime.txt");
    if (success == FALSE) {
        wprintf(L"%s\n",CkMimeW_lastErrorText(mime));
        CkMimeW_Dispose(mime);
        CkCertW_Dispose(cert);
        return;
    }

    wprintf(L"success!\n");


    CkMimeW_Dispose(mime);
    CkCertW_Dispose(cert);

    }