Re: Draw a themed combo box.

hi

I am trying to make a combo box like control completely on my own by
directly derving from CWnd.
I have a control derived from CWnd. The OnPaint handler's code is given
at the end of the post.

What i am doing is that in the OnPaint I am drawing a edit control and
then drawing a scroll button on the right hand side. In enabled state
the control looks just fine but in disabled state, it does not look
like the MFC themed combo box.

Can someone help me get the disabled look?

code snippet:

   CPaintDC dc(this);
   CRect totalRect;
   GetClientRect(totalRect);

   // dropdown button rect
   CRect arrow = totalRect;
   arrow.left = arrow.right - ::GetSystemMetrics(SM_CXHSCROLL);
   arrow.DeflateRect(1,1);

   BOOL bEnabled = this->IsWindowEnabled();

   HTHEME hTheme = OpenThemeData(this->m_hWnd,L"ComboBox");

   if (hTheme)
   {
       dc.FillSolidRect(totalRect, ::GetSysColor(COLOR_WINDOW));

       // draw the border around the edit control
       HTHEME hEdit = OpenThemeData(this->m_hWnd, L"Edit");
       DrawThemeParentBackground(this->m_hWnd,dc.m_hDC,totalRect);
       if (bEnabled)

DrawThemeBackground(hEdit,dc.m_hDC,EP_EDITTEXT,ETS_NORMAL,totalRect,NULL);
       else
       {

DrawThemeBackground(hEdit,dc.m_hDC,EP_EDITTEXT,ETS_DISABLED,totalRect,NULL);
       }

       CloseThemeData(hEdit);

       if (bEnabled)

DrawThemeBackground(hTheme,dc.m_hDC,CP_DROPDOWNBUTTON,CBXS_NORMAL,arrow,NULL);
       else

DrawThemeBackground(hTheme,dc.m_hDC,CP_DROPDOWNBUTTON,CBXS_DISABLED,arrow,NULL);

       CloseThemeData(hTheme);
   }
   else
   {
       // draw the edit box
       if (bEnabled)
           dc.FillSolidRect(totalRect, ::GetSysColor(COLOR_WINDOW));
       else
           dc.FillSolidRect(totalRect,::GetSysColor(COLOR_BTNFACE));

       // draw the border around the edit control
       dc.Draw3dRect(totalRect,::GetSysColor(COLOR_3DDKSHADOW),
::GetSysColor(COLOR_3DLIGHT));

       // draw the dropdown arrow.
       dc.DrawFrameControl(arrow,DFC_SCROLL,DFCS_SCROLLCOMBOBOX);
   }
}

What I am trying to create is a multi select combo box.
Regards
Chiman