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1 | ///////////////////////////////////////////////////////////////////////////// | |
2 | // Name: wx/palmos/gdiobj.h | |
3 | // Purpose: wxGDIObject class: base class for other GDI classes | |
4 | // Author: William Osborne - minimal working wxPalmOS port | |
5 | // Modified by: | |
6 | // Created: 10/13/04 | |
7 | // RCS-ID: $Id$ | |
8 | // Copyright: (c) William Osborne | |
9 | // Licence: wxWindows licence | |
10 | ///////////////////////////////////////////////////////////////////////////// | |
11 | ||
12 | #ifndef _WX_GDIOBJ_H_ | |
13 | #define _WX_GDIOBJ_H_ | |
14 | ||
15 | #include "wx/object.h" // base class | |
16 | ||
17 | // ---------------------------------------------------------------------------- | |
18 | // wxGDIRefData is the base class for wxXXXData structures which contain the | |
19 | // real data for the GDI object and are shared among all wxWin objects sharing | |
20 | // the same native GDI object | |
21 | // ---------------------------------------------------------------------------- | |
22 | ||
23 | class WXDLLEXPORT wxGDIRefData : public wxObjectRefData | |
24 | { | |
25 | // this class is intentionally left blank | |
26 | }; | |
27 | ||
28 | // ---------------------------------------------------------------------------- | |
29 | // wxGDIObject | |
30 | // ---------------------------------------------------------------------------- | |
31 | ||
32 | class WXDLLEXPORT wxGDIObject : public wxObject | |
33 | { | |
34 | public: | |
35 | wxGDIObject() { m_visible = FALSE; }; | |
36 | ||
37 | // Creates the resource | |
38 | virtual bool RealizeResource() { return FALSE; }; | |
39 | ||
40 | // Frees the resource | |
41 | virtual bool FreeResource(bool WXUNUSED(force) = FALSE) { return FALSE; } | |
42 | ||
43 | virtual bool IsFree() const { return FALSE; } | |
44 | ||
45 | bool IsNull() const { return (m_refData == 0); } | |
46 | ||
47 | // Returns handle. | |
48 | virtual WXHANDLE GetResourceHandle() const { return 0; } | |
49 | ||
50 | virtual bool GetVisible() { return m_visible; } | |
51 | virtual void SetVisible(bool v) { m_visible = v; } | |
52 | ||
53 | protected: | |
54 | bool m_visible; // TRUE only if we should delete this object ourselves | |
55 | ||
56 | private: | |
57 | DECLARE_DYNAMIC_CLASS(wxGDIObject) | |
58 | }; | |
59 | ||
60 | #endif | |
61 | // _WX_GDIOBJ_H_ |