Important Windows CPI-C Calls

Several CPI-C calls and Windows enhancements are of particular importance to developers and should be reviewed before using Microsoft SNA Server. These calls and enhancements include:

• Set_Processing_Mode (cmspm)
• Specify_Windows_Handle (xchwnd)
• Wait_For_Conversation (cmwait)
• WinCPICCleanup
• WinCPICExtractEvent
• WinCPICIsBlocking
• WinCPICSetBlockingHook
• WinCPICSetEvent
• WinCPICStartup
• WinCPICUnhookBlockingHook

SNA Server generally permits one outstanding Windows SNA asynchronous call per connection and one blocking verb per thread. The exception is when an asynchronous Receive call is issued.