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(Unicode C) Send HTML Email with External CSS as Related ItemDemonstrates how to compose an HTML email with an external CSS file included as a related item and referenced by CID (Content-ID).
#include <C_CkMailManW.h> #include <C_CkEmailW.h> #include <C_CkStringBuilderW.h> void ChilkatSample(void) { HCkMailManW mailman; HCkEmailW email; HCkStringBuilderW sbCss; BOOL bCrlf; const wchar_t *filenameInHtml; const wchar_t *contentIdCss; HCkStringBuilderW sbHtml; int numReplacements; BOOL success; // This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. // The mailman object is used for sending and receiving email. mailman = CkMailManW_Create(); // Use your SMTP server hostname. This example uses office365, but it could be any SMTP server.. CkMailManW_putSmtpHost(mailman,L"outlook.office365.com"); CkMailManW_putSmtpPort(mailman,587); CkMailManW_putStartTLS(mailman,TRUE); // Set the SMTP login/password CkMailManW_putSmtpUsername(mailman,L"OFFICE365-SMTP-LOGIN"); CkMailManW_putSmtpPassword(mailman,L"OFFICE365-SMTP-PASSWORD"); // Create a new email object email = CkEmailW_Create(); CkEmailW_putSubject(email,L"HTML Email with embedded CSS"); CkEmailW_putFrom(email,L"Chilkat Support <my-office365-user@mydomain.com>"); CkEmailW_AddTo(email,L"Chilkat Support",L"support@chilkatsoft.com"); sbCss = CkStringBuilderW_Create(); bCrlf = TRUE; CkStringBuilderW_AppendLine(sbCss,L"body {",bCrlf); CkStringBuilderW_AppendLine(sbCss,L" background-color: powderblue;",bCrlf); CkStringBuilderW_AppendLine(sbCss,L"}",bCrlf); CkStringBuilderW_AppendLine(sbCss,L"h1 {",bCrlf); CkStringBuilderW_AppendLine(sbCss,L" color: blue;",bCrlf); CkStringBuilderW_AppendLine(sbCss,L"}",bCrlf); CkStringBuilderW_AppendLine(sbCss,L"p {",bCrlf); CkStringBuilderW_AppendLine(sbCss,L" color: red;",bCrlf); CkStringBuilderW_AppendLine(sbCss,L"}",bCrlf); // It's possible to add a CSS file directly by calling AddRelatedFile. // This example will add the CSS from a string. filenameInHtml = L"styles.css"; contentIdCss = CkEmailW_addRelatedString(email,filenameInHtml,CkStringBuilderW_getAsString(sbCss),L"utf-8"); if (CkEmailW_getLastMethodSuccess(email) != TRUE) { wprintf(L"%s\n",CkEmailW_lastErrorText(email)); CkMailManW_Dispose(mailman); CkEmailW_Dispose(email); CkStringBuilderW_Dispose(sbCss); return; } // The src attribute for the image tag is set to the contentIdCss: sbHtml = CkStringBuilderW_Create(); CkStringBuilderW_AppendLine(sbHtml,L"<!DOCTYPE html>",bCrlf); CkStringBuilderW_AppendLine(sbHtml,L"<html>",bCrlf); CkStringBuilderW_AppendLine(sbHtml,L"<head>",bCrlf); CkStringBuilderW_AppendLine(sbHtml,L" <link rel=\"stylesheet\" href=\"cid:CONTENT_ID_CSS\">",bCrlf); CkStringBuilderW_AppendLine(sbHtml,L"</head>",bCrlf); CkStringBuilderW_AppendLine(sbHtml,L"<body>",bCrlf); CkStringBuilderW_AppendLine(sbHtml,L"",bCrlf); CkStringBuilderW_AppendLine(sbHtml,L"<h1>This is a heading</h1>",bCrlf); CkStringBuilderW_AppendLine(sbHtml,L"<p>This is a paragraph.</p>",bCrlf); CkStringBuilderW_AppendLine(sbHtml,L"",bCrlf); CkStringBuilderW_AppendLine(sbHtml,L"</body>",bCrlf); CkStringBuilderW_AppendLine(sbHtml,L"</html>",bCrlf); numReplacements = CkStringBuilderW_Replace(sbHtml,L"CONTENT_ID_CSS",contentIdCss); CkEmailW_SetHtmlBody(email,CkStringBuilderW_getAsString(sbHtml)); success = CkMailManW_SendEmail(mailman,email); if (success != TRUE) { wprintf(L"%s\n",CkMailManW_lastErrorText(mailman)); } else { wprintf(L"Mail Sent!\n"); } CkMailManW_Dispose(mailman); CkEmailW_Dispose(email); CkStringBuilderW_Dispose(sbCss); CkStringBuilderW_Dispose(sbHtml); } |
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