Brings the application specified by a 4-character signature to the front. The application must already be running. This only requests that the application be brought to the front. It won’t actually happen until 4D® gives up CPU time by calling WaitNextEvent. In pre-3.0 versions of 4D®, you may have to call ProcessAEVT to force it to happen.
FindAppName
Err:=FindAppName(Signature;Name)
Given a 4-character signature, this will return the name of the application associated with that ID. It will return the name without a full path.
FindCreator
Err:=FindCreator(File Name;Creator ID)
Given a full or partial pathname of a file, will return the creator ID. This is useful to figure out which application to launch when any document is selected.
Returns 1 if the application is running, 0 otherwise.
Long
Result:=Long(TypeString)
Converts a 4-character type string to a long integer value. This is useful when a type or application signature needs to be passed to one of the low-level functions.
ProcessList
Err:=ProcessList(Visible;StringArray)
Builds an array of the signatures of all running processes. If 'visible' is non-zero, only the visible applications will be listed. Otherwise, the list will also include invisible processes, such as background-only applications and File Sharing Extension. The array will be allocated if necessary and will contain a 4-character signature string for each running (or visible) application. In a compiled database, you must pre-define the array as fixed 4-character strings, although the number of elements will change dynamically.
Returns the serialization string and version # of System 7 Pack‚Ñ¢ as a long integer value, which will be negative for a demo version. The current version is 3.5, which will be returned as 350 (or -350 for the demo version).
SetTimeout
SetTimeout(Ticks)
Sets the time-out value in ticks (60ths of a second) to use when sending an AppleEvent. A good value to use is "600", which is 10 seconds. To specify the default value, which is about a minute, pass -1. If the value is too short, you may get an error code of -1712 (time out) when sending an AppleEvent. If the value is too long, the system will appear to "hang" while waiting for a response if none is returned.
System7
Result:=System7
Returns 1 if you're running a compatible system which supports AppleEvents. This should be one of the first calls in your program, so you can provide a graceful exit if necessary. Other System 7 Pack‚Ñ¢ functions will not crash if you're not running system 7, but will simply return an error code of -2.
IsVersion3
Result:=IsVersion3
Returns non-zero if you’re running 4D® v3.0 or later. NOTE: This replaces S7P 3.3’s “AE Process ID”. Since 4D 3.0.3 and later handle AppleEvents in a system process, we no longer provide direct access to it.