DDE Srv Check Item (Windows)

Sets the value of a previously defined DDE item. Refer to the Using DDE in LabVIEW Application Note for more information about DDE.

timeout indicates how many milliseconds to wait for the function to complete. The default is –1, which indicates no timeout. If the VI completes before the specified amount of time, it returns an error.
item refnum is a refnum that uniquely identifies this DDE item.
If wait for poke is FALSE (default), the VI receives the current value and returns immediately. If TRUE, the VI waits until a client pokes the value before returning.
error in describes error conditions that occur before this VI or function runs. The default is no error. If an error occurred before this VI or function runs, the VI or function passes the error in value to error out. This VI or function runs normally only if no error occurs before this VI or function runs. If an error occurs while this VI or function runs, it runs normally and sets its own error status in error out. Use the Simple Error Handler or General Error Handler VIs to display the description of the error code. Use error in and error out to check errors and to specify execution order by wiring error out from one node to error in of the next node.
status is TRUE (X) if an error occurred before this VI or function ran or FALSE (checkmark) to indicate a warning or that no error occurred before this VI or function ran. The default is FALSE.
code is the error or warning code. The default is 0. If status is TRUE, code is a non-zero error code. If status is FALSE, code is 0 or a warning code.
source describes the origin of the error or warning and is, in most cases, the name of the VI or function that produced the error or warning. The default is an empty string.
item refnum is a refnum that uniquely identifies this DDE item.
value is the new value for the item.
If poked? is TRUE, the item has been poked by a DDE client since the last DDE Srv Check Item.
error out contains error information. If error in indicates that an error occurred before this VI or function ran, error out contains the same error information. Otherwise, it describes the error status that this VI or function produces. Right-click the error out indicator on the front panel and select Explain Error from the shortcut menu for more information about the error.
status is TRUE (X) if an error occurred or FALSE (checkmark) to indicate a warning or that no error occurred.
code is the error or warning code. If status is TRUE, code is a non-zero error code. If status is FALSE, code is 0 or a warning code.
source describes the origin of the error or warning and is, in most cases, the name of the VI or function that produced the error or warning.