By Dave Grundgeiger
Computers and units are extra attached now than ever sooner than. Why? as the people who use these desktops have to collaborate. we have to percentage info, and we have to do it speedy, with out regard to the actual distance that separates us. company resolution builders now greater than ever find a way and accountability to permit humans to speak in methods by no means earlier than possible.CDO and MAPI Programming with visible uncomplicated: constructing Mail and Messaging Applications dives deep into Microsoft's Collaboration information gadgets (CDO) and the Messaging program Programming Interface (MAPI), then strikes into succinct reasons of the categories of beneficial messaging functions that may be written in visible Basic.Microsoft has given the visible simple neighborhood Collaboration information items (CDO)--a expertise that is going a long way past uncomplicated electronic mail, absolutely into the world of data workflow. CDO permits visible simple functions to interchange not just vintage e-mail, yet in truth any info in a simple and simple means. The Internet--sometimes noticeable as a barrier via developers--is become an open pipe, able to take your application's facts around the globe. Routing files and construction e-mail record servers is simply the start. Harness the facility of globally communique on your daily company applications.MAPI is the cornerstone of messaging at the home windows structures, and profoundly impacts how you will write your collaboration functions. knowing this know-how lays the root for including potent collaboration functions on your personal applications.CDO and MAPI Programming with visible simple: constructing Mail and Messaging Applications fills a niche in a thrilling and comparatively younger, but well known, expertise that lacks sufficient documentation.
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Additional resources for CDO & MAPI Programming with Visual Basic:: Developing Mail and Messaging Applications
MAPI_E_NOT_SUPPORTED The underlying message system couldn't satisfy the request to display an address entry properties dialog box. MAPI_E_USER_ABORT The user clicked the Cancel button on the address entry properties dialog box. 9 Microsoft's Helper Functions Some of the Simple MAPI functions are a little cumbersome to call, to say the least. In particular, it seems a bit excessive to have to call both BMAPIReadMail and BMAPIGetReadMail simply to retrieve a list of messages. Similarly, why should we have to call both BMAPIAddress and BMAPIGetAddress to display the address book and retrieve the list of selected address entries?
Dll. • Inside the library file, the function is known as MAPILogon. ) • The function has six parameters, of the types shown. • The last parameter, Session, is passed by reference. That means that the address of a variable is to be passed in this position, not the value of the variable. This usually indicates that the called procedure writes a value to that variable as part of its operation, which indeed is the case here. 35 36 • The function returns a Long. 2 The API Viewer To write a proper Declare statement, it is necessary to know the answers to several questions: • What are the names of the procedures that are to be called?
Example 3-3 shows a code fragment that sends a single file attachment to a single recipient. This code assumes that a session has already been established via a call to the MAPILogon function, and that the session handle is held in a variable called nMAPISession. The message thus sent, when viewed in Microsoft Outlook 98, is shown in Figure 3-3. Example 3-3. Sending a File Attachment Dim Dim Dim Dim nRetVal As Long MyMessage As MAPIMessage MyRecips( ) As MapiRecip MyFiles( ) As MapiFile ' Set the subject and body text.
CDO & MAPI Programming with Visual Basic:: Developing Mail and Messaging Applications by Dave Grundgeiger