src/windows/native/sun/windows/awt_Component.cpp

*** 3837,3846 ****
--- 3837,3849 ----
  void AwtComponent::OpenCandidateWindow(int x, int y)
  {
      UINT bits = 1;
      POINT p = {0, 0}; // upper left corner of the client area
      HWND hWnd = GetHWnd();
+     if (!::IsWindowVisible(hWnd)) {
+         return;
+     }
      HWND hTop = GetTopLevelParentForWindow(hWnd);
      ::ClientToScreen(hTop, &p);
      if (!m_bitsCandType) {
          SetCandidateWindow(m_bitsCandType, x - p.x, y - p.y);
          return;
*** 4119,4128 ****
--- 4122,4134 ----
  //
  // Inquires candidate position according to the composed text
  //
  void AwtComponent::InquireCandidatePosition()
  {
+     if (!::IsWindowVisible(GetHWnd())) {
+         return;
+     }
      JNIEnv *env = (JNIEnv *)JNU_GetEnv(jvm, JNI_VERSION_1_2);
  
      // get global reference of WInputMethod class (run only once)
      static jclass wInputMethodCls = NULL;
      if (wInputMethodCls == NULL) {