ViewerPostMessage

Posts a Windows System Message to the specified project screen.

Function	Group	Execution	Windows	Embedded	Thin Client
ViewerPostMessage	Module Activity	Asynchronous	Supported	Supported	Supported

Note: This function cannot be used with Tasks or in the Global Procedures script.

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: A numeric value or tag; additional message-specific information, which is passed to wParam of the Windows System Message.
numlParam: A numeric value or tag; additional message-specific information, which is passed to lParam of the Windows System Message.
optNumID: The specific instance number of the screen. (The ID is assigned when the screen is opened with the Open() function.) This is an optional parameter; the default ID is 0.

Returned value

This function returns no values.

Notes

This function emulates the PostMessage function in Microsoft Windows. For more information, including a complete list of available Windows System Messages, please consult Microsoft Developers Network.

Examples

Tag Name	Expression
	`ViewerPostMessage( "main", 16, 3, 1, 10 )` // Sends message 16 to the "main" screen with ID 10.