<AWT Dev> [11] RFR 8200353: Shift or Capslock not working in Textfield after accentued keystrokes

[Dmitry Markov]

Hello,

Could you review a fix for jdk11, please?

 bug: https://bugs.openjdk.java.net/browse/JDK-8200353
 webrev: http://cr.openjdk.java.net/~dmarkov/8200353/webrev.00/

The new mechanism of dead keys detection and processing was introduced by JDK-8139189 [1]. According to that changes dead key input is activated by WM_KEYDOWN and deactivated by WM_CHAR messages. However the function WindowsKeyToJavaChar() (which actually sets the flag deadKeyActive to true) is also called from _NativeHandleEvent() and in this case target component doesn't receive WM_CHAR message, (i.e. dead key input remains active).
At the same time _NativeHandleEvent() sends character back to the native window using WM_AWT_FORWARD_CHAR message. So it is necessary to disable dead key input, (i.e. set deadKeyActive to false) when WM_AWT_FORWARD_CHAR is received.

I ran related AWT/Swing regression tests and did not observe any new failures.
 
Thanks,
Dmitry 

[1] - https://bugs.openjdk.java.net/browse/JDK-8139189
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