C++ (Cpp) Control::IsNull Examples

Example #1

File: STFSliders.cpp Project: SunGong1993/PCL

void STFSliders::OnRangeUpdated( range_event_handler f, Control& c )
{
   if ( f == 0 || c.IsNull() )
   {
      onRangeUpdated = 0;
      onRangeUpdatedReceiver = 0;
   }
   else
   {
      onRangeUpdated = f;
      onRangeUpdatedReceiver = &c;
   }
}

Example #2

File: FontComboBox.cpp Project: morserover/PCL

void FontComboBox::OnFontHighlighted( font_event_handler f, Control& c )
{
   if ( f == 0 || c.IsNull() )
   {
      onFontHighlighted = 0;
      onFontHighlightedReceiver = 0;
   }
   else
   {
      onFontHighlighted = f;
      onFontHighlightedReceiver = &c;
   }
}

Example #3

File: NumericControl.cpp Project: morserover/PCL

void NumericEdit::OnValueUpdated( value_event_handler f, Control& c )
{
   __PCL_NO_ALIAS_HANDLER;
   if ( f == 0 || c.IsNull() )
   {
      onValueUpdated = 0;
      onValueUpdatedReceiver = 0;
   }
   else
   {
      onValueUpdated = f;
      onValueUpdatedReceiver = &c;
   }
}

Example #4

File: NumericControl.cpp Project: aleixpuig/PCL

void NumericEdit::OnValueUpdated( value_event_handler f, Control& c )
{
   if ( f == nullptr || c.IsNull() )
   {
      if ( !m_handlers.IsNull() )
      {
         m_handlers->onValueUpdated = nullptr;
         m_handlers->onValueUpdatedReceiver = nullptr;
      }
   }
   else
   {
      INIT_EVENT_HANDLERS();
      m_handlers->onValueUpdated = f;
      m_handlers->onValueUpdatedReceiver = &c;
   }
}

Example #5

File: SectionBar.cpp Project: aleixpuig/PCL

void SectionBar::OnCheck( check_event_handler f, Control& c )
{
   if ( Title_CheckBox.IsNull() || f == nullptr || c.IsNull() )
   {
      if ( !m_handlers.IsNull() )
      {
         m_handlers->onCheck = nullptr;
         m_handlers->onCheckReceiver = nullptr;
      }
   }
   else
   {
      INIT_EVENT_HANDLERS();
      m_handlers->onCheck = f;
      m_handlers->onCheckReceiver = &c;
   }
}

Example #6

File: SectionBar.cpp Project: aleixpuig/PCL

void SectionBar::OnToggleSection( section_event_handler f, Control& c )
{
   if ( f == nullptr || c.IsNull() )
   {
      if ( !m_handlers.IsNull() )
      {
         m_handlers->onToggleSection = nullptr;
         m_handlers->onToggleSectionReceiver = nullptr;
      }
   }
   else
   {
      INIT_EVENT_HANDLERS();
      m_handlers->onToggleSection = f;
      m_handlers->onToggleSectionReceiver = &c;
   }
}

Example #7

File: SectionBar.cpp Project: aleixpuig/PCL

void SectionBar::SetSection( Control& section )
{
   if ( m_section != nullptr )
   {
      m_section->OnShow( nullptr, Control::Null() );
      m_section->OnHide( nullptr, Control::Null() );
      m_section = nullptr;
   }

   if ( section.IsNull() )
      return;

   m_section = &section;
   m_section->OnShow( (Control::event_handler)&SectionBar::ControlShow, *this );
   m_section->OnHide( (Control::event_handler)&SectionBar::ControlHide, *this );

   Title_ToolButton.SetIcon( Bitmap( ScaledResource( m_section->IsVisible() ? contract_icon : expand_icon ) ) );
}

Example #8

File: SectionBar.cpp Project: aleixpuig/PCL

void SectionBar::ButtonClick( Button& sender, bool checked )
{
   if ( m_section != nullptr && sender == Title_ToolButton )
   {
      if ( !m_handlers.IsNull() )
         if ( m_handlers->onToggleSection != nullptr )
            (m_handlers->onToggleSectionReceiver->*m_handlers->onToggleSection)( *this, *m_section, true );

      bool visible = m_section->IsVisible();

      Control* p = &m_section->Parent();
      if ( !p->IsNull() )
      {
         while ( !p->Parent().IsNull() )
            p = &p->Parent();
         p->DisableUpdates();
      }

      if ( visible )
         m_section->Hide();
      else
         m_section->Show();

      // On OS X, forcing event processing here causes a lot of flickering.
      // On X11 and Windows, it's just the opposite...
#ifndef __PCL_MACOSX
      Module->ProcessEvents();
#endif
      if ( !p->IsNull() )
      {
         bool fixedWidth = p->IsFixedWidth();
         if ( !fixedWidth )
            p->SetFixedWidth();

         bool fixedHeight = p->IsFixedHeight();
         if ( fixedHeight )
            p->SetVariableHeight();

         p->AdjustToContents();

         Module->ProcessEvents();

         if ( !fixedWidth )
            p->SetVariableWidth();
         if ( fixedHeight )
            p->SetFixedHeight();

         p->EnableUpdates();
      }

      if ( !m_handlers.IsNull() )
         if ( m_handlers->onToggleSection != nullptr )
            (m_handlers->onToggleSectionReceiver->*m_handlers->onToggleSection)( *this, *m_section, false );
   }
   else if ( !Title_CheckBox.IsNull() && sender == *Title_CheckBox )
   {
      if ( m_section != nullptr )
         m_section->Enable( checked );

      if ( !m_handlers.IsNull() )
         if ( m_handlers->onCheck != nullptr )
            (m_handlers->onCheckReceiver->*m_handlers->onCheck)( *this, checked );
   }
}