private.h

浙江大学的悟空嵌入式系统模拟器

extern wxCOLORMAP *wxGetStdColourMap();

// copy Windows RECT to our wxRect
inline void wxCopyRECTToRect(const RECT& r, wxRect& rect)
{
    rect.y = r.top;
    rect.x = r.left;
    rect.width = r.right - r.left;
    rect.height = r.bottom - r.top;
}

// translations between HIMETRIC units (which OLE likes) and pixels (which are
// liked by all the others) - implemented in msw/utilsexc.cpp
extern void HIMETRICToPixel(LONG *x, LONG *y);
extern void PixelToHIMETRIC(LONG *x, LONG *y);

// Windows convention of the mask is opposed to the wxWindows one, so we need
// to invert the mask each time we pass one/get one to/from Windows
extern HBITMAP wxInvertMask(HBITMAP hbmpMask, int w = 0, int h = 0);

// get (x, y) from DWORD - notice that HI/LOWORD can *not* be used because they
// will fail on system with multiple monitors where the coords may be negative
//
// these macros are standard now (Win98) but some older headers don't have them
#ifndef GET_X_LPARAM
    #define GET_X_LPARAM(lp) ((int)(short)LOWORD(lp))
    #define GET_Y_LPARAM(lp) ((int)(short)HIWORD(lp))
#endif // GET_X_LPARAM

// get the current state of SHIFT/CTRL keys
inline bool wxIsShiftDown()
{
//    return (::GetKeyState(VK_SHIFT) & 0x100) != 0;
    // Returns different negative values on WinME and WinNT,
    // so simply test for negative value.
    return ::GetKeyState(VK_SHIFT) < 0;
}

inline bool wxIsCtrlDown()
{
//    return (::GetKeyState(VK_CONTROL) & 0x100) != 0;
    // Returns different negative values on WinME and WinNT,
    // so simply test for negative value.
    return ::GetKeyState(VK_CONTROL) < 0;
}

// wrapper around GetWindowRect() and GetClientRect() APIs doing error checking
// for Win32
inline RECT wxGetWindowRect(HWND hwnd)
{
    RECT rect;
#ifdef __WIN16__
    ::GetWindowRect(hwnd, &rect);
#else // Win32
    if ( !::GetWindowRect(hwnd, &rect) )
    {
        wxLogLastError(_T("GetWindowRect"));
    }
#endif // Win16/32

    return rect;
}

inline RECT wxGetClientRect(HWND hwnd)
{
    RECT rect;
#ifdef __WIN16__
    ::GetClientRect(hwnd, &rect);
#else // Win32
    if ( !::GetClientRect(hwnd, &rect) )
    {
        wxLogLastError(_T("GetClientRect"));
    }
#endif // Win16/32

    return rect;
}

// ---------------------------------------------------------------------------
// small helper classes
// ---------------------------------------------------------------------------

// create an instance of this class and use it as the HDC for screen, will
// automatically release the DC going out of scope
class ScreenHDC
{
public:
    ScreenHDC() { m_hdc = ::GetDC(NULL);    }
   ~ScreenHDC() { ::ReleaseDC(NULL, m_hdc); }

    operator HDC() const { return m_hdc; }

private:
    HDC m_hdc;
};

// the same as ScreenHDC but for memory DCs: creates the HDC in ctor and
// destroys it in dtor
class MemoryHDC
{
public:
    MemoryHDC() { m_hdc = ::CreateCompatibleDC(NULL); }
   ~MemoryHDC() { ::DeleteDC(m_hdc);                  }

    operator HDC() const { return m_hdc; }

private:
    HDC m_hdc;
};

// a class which selects a GDI object into a DC in its ctor and deselects in
// dtor
class SelectInHDC
{
public:
    SelectInHDC(HDC hdc, HGDIOBJ hgdiobj) : m_hdc(hdc)
        { m_hgdiobj = ::SelectObject(hdc, hgdiobj); }

   ~SelectInHDC() { ::SelectObject(m_hdc, m_hgdiobj); }

   // return true if the object was successfully selected
   operator bool() const { return m_hgdiobj != 0; }

private:
   HDC m_hdc;
   HGDIOBJ m_hgdiobj;
};

// ---------------------------------------------------------------------------
// macros to make casting between WXFOO and FOO a bit easier: the GetFoo()
// returns Foo cast to the Windows type for oruselves, while GetFooOf() takes
// an argument which should be a pointer or reference to the object of the
// corresponding class (this depends on the macro)
// ---------------------------------------------------------------------------

#define GetHwnd()               ((HWND)GetHWND())
#define GetHwndOf(win)          ((HWND)((win)->GetHWND()))
// old name
#define GetWinHwnd              GetHwndOf

#define GetHdc()                ((HDC)GetHDC())
#define GetHdcOf(dc)            ((HDC)(dc).GetHDC())

#define GetHbitmap()            ((HBITMAP)GetHBITMAP())
#define GetHbitmapOf(bmp)       ((HBITMAP)(bmp).GetHBITMAP())

#define GetHicon()              ((HICON)GetHICON())
#define GetHiconOf(icon)        ((HICON)(icon).GetHICON())

#define GetHaccel()             ((HACCEL)GetHACCEL())
#define GetHaccelOf(table)      ((HACCEL)((table).GetHACCEL()))

#define GetHmenu()              ((HMENU)GetHMenu())
#define GetHmenuOf(menu)        ((HMENU)menu->GetHMenu())

#define GetHcursor()            ((HCURSOR)GetHCURSOR())
#define GetHcursorOf(cursor)    ((HCURSOR)(cursor).GetHCURSOR())

#define GetHfont()              ((HFONT)GetHFONT())
#define GetHfontOf(font)        ((HFONT)(font).GetHFONT())

#define GetHpalette()           ((HPALETTE)GetHPALETTE())
#define GetHpaletteOf(pal)      ((HPALETTE)(pal).GetHPALETTE())

#define GetHrgn()               ((HRGN)GetHRGN())
#define GetHrgnOf(rgn)          ((HRGN)(rgn).GetHRGN())

#endif // wxUSE_GUI

// ---------------------------------------------------------------------------
// global data
// ---------------------------------------------------------------------------

WXDLLEXPORT_DATA(extern wxChar*) wxBuffer;

WXDLLEXPORT_DATA(extern HINSTANCE) wxhInstance;

// ---------------------------------------------------------------------------
// global functions
// ---------------------------------------------------------------------------

extern "C"
{
    WXDLLEXPORT HINSTANCE wxGetInstance();
}

WXDLLEXPORT void wxSetInstance(HINSTANCE hInst);

#if wxUSE_GUI

// cursor stuff
extern HCURSOR wxGetCurrentBusyCursor();    // from msw/utils.cpp
extern const wxCursor *wxGetGlobalCursor(); // from msw/cursor.cpp

WXDLLEXPORT void wxGetCharSize(WXHWND wnd, int *x, int *y, const wxFont *the_font);
WXDLLEXPORT void wxFillLogFont(LOGFONT *logFont, const wxFont *font);
WXDLLEXPORT wxFont wxCreateFontFromLogFont(const LOGFONT *logFont);
WXDLLEXPORT wxFontEncoding wxGetFontEncFromCharSet(int charset);

WXDLLEXPORT void wxSliderEvent(WXHWND control, WXWORD wParam, WXWORD pos);
WXDLLEXPORT void wxScrollBarEvent(WXHWND hbar, WXWORD wParam, WXWORD pos);

// Find maximum size of window/rectangle
WXDLLEXPORT extern void wxFindMaxSize(WXHWND hwnd, RECT *rect);

// Safely get the window text (i.e. without using fixed size buffer)
WXDLLEXPORT extern wxString wxGetWindowText(WXHWND hWnd);

// get the window class name
WXDLLEXPORT extern wxString wxGetWindowClass(WXHWND hWnd);

// get the window id (should be unsigned, hence this is not wxWindowID which
// is, for mainly historical reasons, signed)
WXDLLEXPORT extern WXWORD wxGetWindowId(WXHWND hWnd);

// check if hWnd's WNDPROC is wndProc. Return true if yes, false if they are
// different
WXDLLEXPORT extern bool wxCheckWindowWndProc(WXHWND hWnd, WXFARPROC wndProc);

// Does this window style specify any border?
inline bool wxStyleHasBorder(long style)
{
    return (style & (wxSIMPLE_BORDER | wxRAISED_BORDER |
                     wxSUNKEN_BORDER | wxDOUBLE_BORDER)) != 0;
}

// ----------------------------------------------------------------------------
// functions mapping HWND to wxWindow
// ----------------------------------------------------------------------------

// this function simply checks whether the given hWnd corresponds to a wxWindow
// and returns either that window if it does or NULL otherwise
WXDLLEXPORT extern wxWindow* wxFindWinFromHandle(WXHWND hWnd);

// find the window for HWND which is part of some wxWindow, i.e. unlike
// wxFindWinFromHandle() above it will also work for "sub controls" of a
// wxWindow.
//
// returns the wxWindow corresponding to the given HWND or NULL.
WXDLLEXPORT extern wxWindow *wxGetWindowFromHWND(WXHWND hwnd);


// Get the size of an icon
WXDLLEXPORT extern wxSize wxGetHiconSize(HICON hicon);

#endif // wxUSE_GUI

#endif
    // _WX_PRIVATE_H_