Please help me in KeyTyped Event in Swing

Question

hi,
goodmorning
In my project I have a Frame.on that Frame I put a JDesktopPane which contains one JInternalFrame.I wrote coding in KeyTyped event and mouse clicked event of all i,e in my JFrame,JDeskotpPane and JInternalFrame.
No problem in all my mouse clicked events.When I click the mouse in my objects the corresponding actions done.
But when I typed keys in my JFrame only works well.When I type keys in my jDesktopPane or JinternalFrames nothing happen.will you please explain me what is the reason and the solution.

Answer 1

Well, I am not a swing guru, so my answer may not be correct. My assumption is that you have to add the KeyListener not just for your Frame but for all the components inside the Frame.
For that you have to add a container listener so that when you add new components to your Frame, you might as well add the KeyListener for that. I will give you a link, so that it may explain you better than what I did, because I am a newbie too... :)
Here's the link: http://java.sun.com/docs/books/tutorial/uiswing/events/containerlistener.html
When a new component is added, add the key listener for that component, and check whether the newly added component is a container, if it is a container, then add the container listener to that component... All these things must be done in the componentAdded(ContainerEvent e) method.
In my project I have a Frame.on that Frame I put a
JDesktopPane which contains one JInternalFrame.I
wrote coding in KeyTyped event and mouse clicked
event of all i,e in my JFrame,JDeskotpPane and
JInternalFrame.
No problem in all my mouse clicked events.When I
click the mouse in my objects the corresponding
actions done.
But when I typed keys in my JFrame only works
well.When I type keys in my jDesktopPane or
JinternalFrames nothing happen.will you please
explain me what is the reason and the solution.