Syntax

  ViewerPostMessage(strScrTitle,numMessage,numwParam,numlParam,optNumID)  

strScrTitle

The name of the screen to which the message will be posted.

numMessage

The number of the Windows System Message to be posted.

numwParam

Additional, message-specific information that is passed to wParam of the Windows System Message.

numlParam

Additional, message-specific information that is passed to lParam of the Windows System Message.

optNumID

The specific ID number of the screen. (This number is assigned when the screen is opened using the function Open.)

This parameter is optional; if no value is specified, the default value is 0.

Returned value

This function does not return any value.

Notes

This function emulates the PostMessage function in Microsoft Windows. For more information, including a complete list of available Windows System Messages, go to: msdn.microsoft.com/library/ms644944

If the option Enforce Web functionality equivalence is selected in the project settings, this function cannot be called from Global Procedures or Script worksheets. This is because the function is meaningful only when it is executed on stations that display project screens; it might cause unexpected behavior if it is called from background tasks that are executed on the project runtime server. For more information, see Preferences tab.

Examples

  ViewerPostMessage("main",16,3,1,10)