Bug 260882

I did see this in a 2 hours session testing Mail and Calendar
that the text entry field dissappeard
  Kontact Touch CAB from:
  snapshots/kdepim-ce-package_2011-01-04-09-32
  HTC Touch Pro2, _NEW_ ROM: CE OS 5.2.21887, 2.07.407.1 (80303) GER 02/04/10

I could trigger this by trying to write a new email,
entered a bit in the title the first line and then the last line and a few more lines. I could trigger this in one session, but after rebooting I could not reproduce. This hints towards a resource being depleted.

In #259745 this could be triggered by trying to enter recipients.

Andy's hypothesis is that some widgets are lost, probably they cannot be created, maybe because of memory problems. Testing this idea is difficult, because we do not have debug builds of the composer.

*** Bug 259745 has been marked as a duplicate of this bug. ***

Maybe related to Bug 262164 -  Month view: Swiping to previous or next month can bring up a blank view area

commit 63c9088c79a87ccb8a6a24e71851002aea345f11
branch master
Author: Andreas Holzammer <andreas.holzammer@kdab.com>
Date:   Tue Jan 18 16:19:52 2011 +0100

    fix that widgets get lost
    It seems that widgets get a setVisiable(false) from somewhere in qt,
    to fix this issue we revert its hiding. This should be fixed in qt.
    But i didnt found where it is called.
    
    BUG:260882

diff --git a/mobile/lib/declarativewidgetbase.cpp b/mobile/lib/declarativewidgetbase.cpp
index 6ba5a75..65f25b4 100644
--- a/mobile/lib/declarativewidgetbase.cpp
+++ b/mobile/lib/declarativewidgetbase.cpp
@@ -24,6 +24,19 @@
 #include <QtGui/QGraphicsScene>
 #include <QtGui/QWidget>
 
+#ifdef _WIN32_WCE
+bool DeclarativeWidgetBaseHelper::eventFilter(QObject *obj, QEvent *event)
+{
+    if (event->type() == QEvent::Hide) {
+        QWidget *wid = static_cast<QWidget *>(obj);
+        wid->show();
+        qDebug("Ate hide event");
+    }
+   
+    return QObject::eventFilter(obj, event);
+}
+#endif
+
 DeclarativeWidgetBaseHelper::DeclarativeWidgetBaseHelper( QWidget * widget, QGraphicsItem * parent, const RegisterFunction & registerFunc )
     : QGraphicsProxyWidget( parent ),
       m_registerFunc( registerFunc ),
@@ -37,9 +50,17 @@ DeclarativeWidgetBaseHelper::DeclarativeWidgetBaseHelper( QWidget * widget, QGra
     StyleSheetLoader::applyStyle( m_widget );
     setWidget( m_widget );
     setFocusPolicy( Qt::StrongFocus );
+#ifdef _WIN32_WCE
+    m_widget->installEventFilter(this);
+#endif
 }
 
-DeclarativeWidgetBaseHelper::~DeclarativeWidgetBaseHelper() {}
+DeclarativeWidgetBaseHelper::~DeclarativeWidgetBaseHelper()
+{
+#ifdef _WIN32_WCE
+    m_widget->removeEventFilter(this);
+#endif
+}
 
 QVariant DeclarativeWidgetBaseHelper::itemChange( GraphicsItemChange change, const QVariant & value )
 {
diff --git a/mobile/lib/declarativewidgetbase.h b/mobile/lib/declarativewidgetbase.h
index fee4a58..b849c12 100644
--- a/mobile/lib/declarativewidgetbase.h
+++ b/mobile/lib/declarativewidgetbase.h
@@ -43,6 +43,9 @@ protected:
 
 protected:
     /* reimp */ QVariant itemChange( GraphicsItemChange change, const QVariant & value );
+#ifdef _WIN32_WCE
+    bool eventFilter(QObject *obj, QEvent *event);
+#endif
 
 private:
     const RegisterFunction m_registerFunc;

With snapshot version 2011-03-01-23-23 i have this problem in the messagecomposer again.

Prio HI > VHI this is the worst bug we have in komo afaik