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Bug 981963 Ignore following char message if its wParam is 0 r=jimm

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This commit is contained in:
Masayuki Nakano 2014-03-20 22:52:27 +09:00
parent 4522a79449
commit ebc9e417b9
1 changed files with 7 additions and 0 deletions
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7
widget/windows/KeyboardLayout.cpp
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@ -1447,6 +1447,13 @@ NativeKey::GetFollowingCharMessage(MSG& aCharMsg) const
continue;
}
// Typically, this case occurs with WM_DEADCHAR. If the removed message's
// wParam becomes 0, that means that the key event shouldn't cause text
// input. So, let's ignore the strange char message.
if (removedMsg.message == nextKeyMsg.message && !removedMsg.wParam) {
return false;
}
// NOTE: Although, we don't know when this case occurs, the scan code value
// in lParam may be changed from 0 to something. The changed value
// is different from the scan code of handling keydown message.