delphi - How to color the background of a TComboBox with VCL styles enabled -


i trying color background of tcombobox vcl styles enabled way described in article not working.

http://theroadtodelphi.wordpress.com/2012/02/06/changing-the-color-of-edit-controls-with-vcl-styles-enabled/

depending of delphi version must

delphi xe2

for delphi xe2 must write style hook

uses   vcl.styles,   vcl.themes;  type   tcomboboxstylehookext= class(tcomboboxstylehook)     procedure updatecolors;   strict protected     procedure wndproc(var message: tmessage); override;   public     constructor create(acontrol: twincontrol); override;   end;    twincontrolclass= class(twincontrol);   { tcomboboxstylehookext }  constructor tcomboboxstylehookext.create(acontrol: twincontrol); begin   inherited;   updatecolors; end;  procedure tcomboboxstylehookext.updatecolors; const   colorstates: array[boolean] of tstylecolor = (sccomboboxdisabled, sccombobox);   fontcolorstates: array[boolean] of tstylefont = (sfcomboboxitemdisabled, sfcomboboxitemnormal); var   lstyle: tcustomstyleservices; begin  if control.enabled }//use control colors  begin   brush.color := twincontrolclass(control).color;   fontcolor   := twincontrolclass(control).font.color;  end  else  begin //if not enabled. use current style colors   lstyle := styleservices;   brush.color := lstyle.getstylecolor(colorstates[control.enabled]);   fontcolor := lstyle.getstylefontcolor(fontcolorstates[control.enabled]);  end; end;  procedure tcomboboxstylehookext.wndproc(var message: tmessage); begin   case message.msg of     wm_ctlcolormsgbox..wm_ctlcolorstatic,     cn_ctlcolormsgbox..cn_ctlcolorstatic:       begin         updatecolors;         settextcolor(message.wparam, colortorgb(fontcolor));         setbkcolor(message.wparam, colortorgb(brush.color));         message.result := lresult(brush.handle);         handled := true;       end;     cm_enabledchanged:       begin         updatecolors;         handled := false;       end   else     inherited wndproc(message);   end; end;  initialization   tstylemanager.engine.registerstylehook(tcombobox, tcomboboxstylehookext);

delphi xe3/xe4

simply remove seclient value styleelements propertty 

  combobox1.styleelements:=[sefont, seborder];   combobox2.styleelements:=[sefont, seborder];   combobox3.styleelements:=[sefont, seborder];

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