Microsoft KB Archive/171428

= PRB: MAPIInitialize from Console App can Block Windows Messages =

Article ID: 171428

Article Last Modified on 8/18/2005

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APPLIES TO


 * Microsoft Messaging Application Programming Interface

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This article was previously published under Q171428



SYMPTOMS
Calling the MAPIInitialize function from a console application can block windows messages to other Windows applications.



CAUSE
The console application has not provided a message loop to allow the Windows Operating System to address the requests of other Windows applications.



RESOLUTION
Write the code as a Windows application or alternately try using the PeekMessage loop API call.

For more information on implementing PeekMessage loop functionality, please see the following article(s) in the Microsoft Knowledge Base:

74042 How to Use PeekMessage Correctly in Windows



STATUS
This behavior is by design.



MORE INFORMATION
Code sample that demonstrates issue follows: #include "mapix.h"   #include "conio.h"

void main {      HRESULT hrT = NOERROR; hrT = MAPIInitialize(NULL); getch; }
 * 1) Build the code sample above as a console application.
 * 2) Run the application.
 * 3) Switch to the Control Panel and launch Date/Time
 * 4) Change the date and click OK.

Step 4 should close Date/Time, but it remains open and blocked until the (MAPIInitialize) application is closed.

Keywords: kbmsg kbprb kbcode KB171428

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