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Java Forum / GUI / January 2004Access a frame's message map? (Windows only for now)
Is there any way to mess with a frame's message map in Windows? There are some specific messages I want to handle myself (or even just ignore). Can this be done using JNI? Thanks, -Jeremy Your question is pretty vague. What are you trying to accomplish. Assuming you want to be notified by or control things like window closing, window minimized, ect...My answer is: You need to read up a little more on events. java.awt.event.WindowListener to be more specific. Hope this helps, Todd Specifically I want to assign some code, preferably C code, to the WM_WINDOWPOSCHANGING message. There is no event for this in Java. I need to use this message in order to "glue" a window to the desktop. If I simply force the window to the back during the windowActivated event, the frame flickers to the top and is then sent to the back. The reason I need the windows message is because it's triggered before the window is actually moved; as far as I've found out there is no equivalent event in java. -Jeremy > Your question is pretty vague. What are you trying to accomplish. > [quoted text clipped - 6 lines] > Hope this helps, > Todd It will not provide you with a pre-move message, but: java.awt.event.ComponentListener will inform you of any changes in the frames location, size, or visibility state. It is not vetoable, but you can use the event to undo changes you do not allow. > Specifically I want to assign some code, preferably C code, to the > WM_WINDOWPOSCHANGING message. There is no event for this in Java. I need [quoted text clipped - 3 lines] > windows message is because it's triggered before the window is actually > moved; as far as I've found out there is no equivalent event in java. > Is there any way to mess with a frame's message map in Windows? There are > some specific messages I want to handle myself (or even just ignore). Can > this be done using JNI? see http://java.sun.com/j2se/1.4.2/docs/guide/awt/1.3/AWT_Native_Interface.html ____________ http://reader.imagero.com the best java image reader. Free MagazinesGet these publications absolutely FREE for up to 12 months. There are no hidden fees and no obligation. Simply choose a title, complete the application form and submit it. Read more ...
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