B4J Question How to MainForm StayOnTop?

[rwblinn]

Hi,

for a B4J app to stay on top, I used below code, resulting in error message.

Q: What is the best way for a MainForm to StayOnTop?

Code:

Dim JO As JavaObject
JO.InitializeStatic("java.awt.Window")
JO.RunMethod("setAlwaysOnTop", Array As Object(True))

Error:
Program started.
roCodeSnip v20140504
05/04/2014 12:21:39:AppStart :: Start
Stay on Top
main._appinit (java line: 125)
java.lang.IllegalArgumentException: object is not an instance of declaring class
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at anywheresoftware.b4j.object.JavaObject.RunMethod(JavaObject.java:85)
at b4j.example.main._appinit(main.java:125)
at b4j.example.main._appstart(main.java:159)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at anywheresoftware.b4a.BA.raiseEvent2(BA.java:93)
at anywheresoftware.b4a.BA.raiseEvent(BA.java:84)
at b4j.example.main.start(main.java:35)
at com.sun.javafx.application.LauncherImpl$5.run(LauncherImpl.java:319)
at com.sun.javafx.application.PlatformImpl$5.run(PlatformImpl.java:219)
at com.sun.javafx.application.PlatformImpl$4$1.run(PlatformImpl.java:182)
at com.sun.javafx.application.PlatformImpl$4$1.run(PlatformImpl.java:179)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.application.PlatformImpl$4.run(PlatformImpl.java:179)
at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:76)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.access$100(WinApplication.java:17)
at com.sun.glass.ui.win.WinApplication$3$1.run(WinApplication.java:67)
at java.lang.Thread.run(Thread.java:745)

 

[Erel]

Currently JavaFX doesn't support this feature. According to the bug report it should be supported in Java 8 (update 6): https://javafx-jira.kenai.com/browse/RT-153

 

[rwblinn]

Thank for the info. So far have not tested Java 8 yet, so will explore further.