include/wx/msw/control.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        control.h
   3 // Purpose:     wxControl class
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     01/02/97
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef _WX_CONTROL_H_
  13 #define _WX_CONTROL_H_
  14
  15 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  16     #pragma interface "control.h"
  17 #endif
  18
  19 #include "wx/dynarray.h"
  20
  21 // General item class
  22 class WXDLLEXPORT wxControl : public wxControlBase
  23 {
  24 public:
  25     wxControl() { }
  26
  27     wxControl(wxWindow *parent, wxWindowID id,
  28               const wxPoint& pos = wxDefaultPosition,
  29               const wxSize& size = wxDefaultSize, long style = 0,
  30               const wxValidator& validator = wxDefaultValidator,
  31               const wxString& name = wxControlNameStr)
  32     {
  33         Create(parent, id, pos, size, style, validator, name);
  34     }
  35
  36     bool Create(wxWindow *parent, wxWindowID id,
  37             const wxPoint& pos = wxDefaultPosition,
  38             const wxSize& size = wxDefaultSize, long style = 0,
  39             const wxValidator& validator = wxDefaultValidator,
  40             const wxString& name = wxControlNameStr);
  41
  42     virtual ~wxControl();
  43
  44     // Simulates an event
  45     virtual void Command(wxCommandEvent& event) { ProcessCommand(event); }
  46
  47
  48     // implementation from now on
  49     // --------------------------
  50
  51     virtual wxVisualAttributes GetDefaultAttributes() const
  52     {
  53         return GetClassDefaultAttributes(GetWindowVariant());
  54     }
  55
  56     static wxVisualAttributes
  57     GetClassDefaultAttributes(wxWindowVariant variant = wxWINDOW_VARIANT_NORMAL);
  58
  59     // Calls the callback and appropriate event handlers
  60     bool ProcessCommand(wxCommandEvent& event);
  61
  62     // MSW-specific
  63 #ifdef __WIN95__
  64     virtual bool MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result);
  65 #endif // Win95
  66
  67     // For ownerdraw items
  68     virtual bool MSWOnDraw(WXDRAWITEMSTRUCT *WXUNUSED(item)) { return false; };
  69     virtual bool MSWOnMeasure(WXMEASUREITEMSTRUCT *WXUNUSED(item)) { return false; };
  70
  71     const wxArrayLong& GetSubcontrols() const { return m_subControls; }
  72
  73 protected:
  74     // choose the default border for this window
  75     virtual wxBorder GetDefaultBorder() const;
  76
  77     // return default best size (doesn't really make any sense, override this)
  78     virtual wxSize DoGetBestSize() const;
  79
  80     // This is a helper for all wxControls made with UPDOWN native control.
  81     // In wxMSW it was only wxSpinCtrl derived from wxSpinButton but in
  82     // WinCE of Smartphones this happens also for native wxTextCtrl,
  83     // wxChoice and others.
  84     virtual wxSize GetBestSpinnerSize(const bool is_vertical) const;
  85
  86     // create the control of the given Windows class: this is typically called
  87     // from Create() method of the derived class passing its label, pos and
  88     // size parameter (style parameter is not needed because m_windowStyle is
  89     // supposed to had been already set and so is used instead when this
  90     // function is called)
  91     bool MSWCreateControl(const wxChar *classname,
  92                           const wxString& label,
  93                           const wxPoint& pos,
  94                           const wxSize& size);
  95
  96     // NB: the method below is deprecated now, with MSWGetStyle() the method
  97     //     above should be used instead! Once all the controls are updated to
  98     //     implement MSWGetStyle() this version will disappear.
  99     //
 100     // create the control of the given class with the given style (combination
 101     // of WS_XXX flags, i.e. Windows style, not wxWidgets one), returns
 102     // false if creation failed
 103     //
 104     // All parameters except classname and style are optional, if the
 105     // size/position are not given, they should be set later with SetSize()
 106     // and, label (the title of the window), of course, is left empty. The
 107     // extended style is determined from the style and the app 3D settings
 108     // automatically if it's not specified explicitly.
 109     bool MSWCreateControl(const wxChar *classname,
 110                           WXDWORD style,
 111                           const wxPoint& pos = wxDefaultPosition,
 112                           const wxSize& size = wxDefaultSize,
 113                           const wxString& label = wxEmptyString,
 114                           WXDWORD exstyle = (WXDWORD)-1);
 115
 116     // default style for the control include WS_TABSTOP if it AcceptsFocus()
 117     virtual WXDWORD MSWGetStyle(long style, WXDWORD *exstyle) const;
 118
 119     // default handling of WM_CTLCOLORxxx
 120     virtual WXHBRUSH MSWControlColor(WXHDC pDC);
 121
 122     // call this from the derived class MSWControlColor() if you want to show
 123     // the control greyed out (and opaque)
 124     WXHBRUSH MSWControlColorDisabled(WXHDC pDC);
 125
 126     // call this from the derived class MSWControlColor() if you want to always
 127     // paint the background (as all opaque controls do)
 128     WXHBRUSH MSWControlColorSolid(WXHDC pDC)
 129     {
 130         return DoMSWControlColor(pDC, GetBackgroundColour());
 131     }
 132
 133     // common part of the 3 functions above: pass wxNullColour to use the
 134     // appropriate background colour (meaning ours or our parents) or a fixed
 135     // one
 136     WXHBRUSH DoMSWControlColor(WXHDC pDC, wxColour colBg);
 137
 138     // another WM_CTLCOLOR-related function: override this to return the brush
 139     // which should be used to paint the control background by default
 140     //
 141     // for most controls, the default behaviour of returning 0 and letting the
 142     // system do it is correct, but for some -- e.g. checkboxes -- we actually
 143     // have to return transparent brush from here to prevent the system from
 144     // overwriting background with solid colour
 145     virtual WXHBRUSH MSWGetDefaultBgBrush() { return 0; }
 146
 147     // this is a helper for the derived class GetClassDefaultAttributes()
 148     // implementation: it returns the right colours for the classes which
 149     // contain something else (e.g. wxListBox, wxTextCtrl, ...) instead of
 150     // being simple controls (such as wxButton, wxCheckBox, ...)
 151     static wxVisualAttributes
 152         GetCompositeControlsDefaultAttributes(wxWindowVariant variant);
 153
 154     // for controls like radiobuttons which are really composite this array
 155     // holds the ids (not HWNDs!) of the sub controls
 156     wxArrayLong m_subControls;
 157
 158 private:
 159     DECLARE_DYNAMIC_CLASS_NO_COPY(wxControl)
 160 };
 161
 162 #endif // _WX_CONTROL_H_