changed wxImage::Rescale() to return wxImage& and not void

[wxWidgets.git] / include / wx / msw / control.h

/////////////////////////////////////////////////////////////////////////////
// Name:        control.h
// Purpose:     wxControl class
// Author:      Julian Smart
// Modified by:
// Created:     01/02/97
// RCS-ID:      $Id$
// Copyright:   (c) Julian Smart
// Licence:     wxWindows licence
/////////////////////////////////////////////////////////////////////////////

#ifndef _WX_CONTROL_H_
#define _WX_CONTROL_H_

#ifdef __GNUG__
    #pragma interface "control.h"
#endif

#include "wx/dynarray.h"

// General item class
class WXDLLEXPORT wxControl : public wxControlBase
{
    DECLARE_ABSTRACT_CLASS(wxControl)

public:
   wxControl();
   virtual ~wxControl();

   // Simulates an event
   virtual void Command(wxCommandEvent& event) { ProcessCommand(event); }

   // implementation from now on
   // --------------------------

   // Calls the callback and appropriate event handlers
   bool ProcessCommand(wxCommandEvent& event);

   // MSW-specific
#ifdef __WIN95__
   virtual bool MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result);
#endif // Win95

   // For ownerdraw items
   virtual bool MSWOnDraw(WXDRAWITEMSTRUCT *WXUNUSED(item)) { return FALSE; };
   virtual bool MSWOnMeasure(WXMEASUREITEMSTRUCT *WXUNUSED(item)) { return FALSE; };

   wxArrayLong GetSubcontrols() { return m_subControls; }

   void OnEraseBackground(wxEraseEvent& event);

   virtual WXHBRUSH OnCtlColor(WXHDC pDC, WXHWND pWnd, WXUINT nCtlColor,
                               WXUINT message, WXWPARAM wParam, WXLPARAM lParam);

#if WXWIN_COMPATIBILITY
   virtual void SetButtonColour(const wxColour& WXUNUSED(col)) { }
   wxColour* GetButtonColour() const { return NULL; }

   inline virtual void SetLabelFont(const wxFont& font);
   inline virtual void SetButtonFont(const wxFont& font);
   inline wxFont& GetLabelFont() const;
   inline wxFont& GetButtonFont() const;

   // Adds callback
   inline void Callback(const wxFunction function);

   wxFunction GetCallback() { return m_callback; }

protected:
   wxFunction       m_callback;     // Callback associated with the window
#endif // WXWIN_COMPATIBILITY

protected:
   // for controls like radiobuttons which are really composite this array
   // holds the ids (not HWNDs!) of the sub controls
   wxArrayLong m_subControls;

   virtual wxSize DoGetBestSize() const;

   // create the control of the given class with the given style, returns FALSE
   // if creation failed
   //
   // All parameters except classname and style are optional, if the
   // size/position are not given, they should be set later with SetSize() and,
   // label (the title of the window), of course, is left empty. The extended
   // style is determined from the style and the app 3D settings automatically
   // if it's not specified explicitly.
   bool MSWCreateControl(const wxChar *classname,
                         WXDWORD style,
                         const wxPoint& pos = wxDefaultPosition,
                         const wxSize& size = wxDefaultSize,
                         const wxString& label = wxEmptyString,
                         WXDWORD exstyle = (WXDWORD)-1);

   // determine the extended styles combination for this window (may slightly
   // modify style parameter, this is why it's non const)
   WXDWORD GetExStyle(WXDWORD& style, bool *want3D) const;

private:
   DECLARE_EVENT_TABLE()
};


#if WXWIN_COMPATIBILITY
    inline void wxControl::Callback(const wxFunction f) { m_callback = f; };
    inline wxFont& wxControl::GetLabelFont() const { return GetFont(); }
    inline wxFont& wxControl::GetButtonFont() const { return GetFont(); }
    inline void wxControl::SetLabelFont(const wxFont& font) { SetFont(font); }
    inline void wxControl::SetButtonFont(const wxFont& font) { SetFont(font); }
#endif // WXWIN_COMPATIBILITY

#endif
    // _WX_CONTROL_H_