App.Exec Method (Long)

 VIRTUAL METHOD Exec(
	kExecType AS LONG
) AS LONG

public virtual int Exec(
	int kExecType
)

Parameters

kExecType

Type: Long
The type of event handling loop to start, specified as one of the following constants

Constant	Description
EXECNORMAL	Tells the system to continue to execute the application until either the user closes it (by selecting the Close menu command or using the standard Windows accelerator Alt+F4) or the application decides to close by deliberately invoking the App:Quit() method. When the application terminates, the thread of control exits from App:Exec() to the next statement in your code. This is the default.
EXECWHILEEVENT	Tells the system to continue to execute the application only while there are still events queued. Once the system has dispatched the last event in the queue, the thread of control exits from App:Exec(). This gives you the opportunity to do some processing and then start another event loop by invoking App:Exec() again. You should use this mechanism when you want to do some background processing while the application is idle.

Return Value

Reference