window.h

Wxpython Implemented on Windows CE, Source code

    bool HandleDestroy();

    bool HandlePaint();
    bool HandlePrintClient(WXHDC hDC);
    bool HandleEraseBkgnd(WXHDC hDC);

    bool HandleMinimize();
    bool HandleMaximize();
    bool HandleSize(int x, int y, WXUINT flag);
    bool HandleSizing(wxRect& rect);
    bool HandleGetMinMaxInfo(void *mmInfo);

    bool HandleShow(bool show, int status);
    bool HandleActivate(int flag, bool minimized, WXHWND activate);

    bool HandleCommand(WXWORD id, WXWORD cmd, WXHWND control);

    bool HandleCtlColor(WXHBRUSH *hBrush, WXHDC hdc, WXHWND hWnd);

    bool HandlePaletteChanged(WXHWND hWndPalChange);
    bool HandleQueryNewPalette();
    bool HandleSysColorChange();
    bool HandleDisplayChange();
    bool HandleCaptureChanged(WXHWND gainedCapture);
    virtual bool HandleSettingChange(WXWPARAM wParam, WXLPARAM lParam);

    bool HandleQueryEndSession(long logOff, bool *mayEnd);
    bool HandleEndSession(bool endSession, long logOff);

    bool HandleSetFocus(WXHWND wnd);
    bool HandleKillFocus(WXHWND wnd);

    bool HandleDropFiles(WXWPARAM wParam);

    bool HandleMouseEvent(WXUINT msg, int x, int y, WXUINT flags);
    bool HandleMouseMove(int x, int y, WXUINT flags);
    bool HandleMouseWheel(WXWPARAM wParam, WXLPARAM lParam);

    bool HandleChar(WXWPARAM wParam, WXLPARAM lParam, bool isASCII = false);
    bool HandleKeyDown(WXWPARAM wParam, WXLPARAM lParam);
    bool HandleKeyUp(WXWPARAM wParam, WXLPARAM lParam);
#if wxUSE_ACCEL
    bool HandleHotKey(WXWPARAM wParam, WXLPARAM lParam);
#endif
#ifdef __WIN32__
    int HandleMenuChar(int chAccel, WXLPARAM lParam);
#endif
    // Create and process a clipboard event specified by type.
    bool HandleClipboardEvent( WXUINT nMsg );

    bool HandleQueryDragIcon(WXHICON *hIcon);

    bool HandleSetCursor(WXHWND hWnd, short nHitTest, int mouseMsg);

    bool HandlePower(WXWPARAM wParam, WXLPARAM lParam, bool *vetoed);


    // Window procedure
    virtual WXLRESULT MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam);

    // Calls an appropriate default window procedure
    virtual WXLRESULT MSWDefWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam);

    // message processing helpers

    // return false if the message shouldn't be translated/preprocessed but
    // dispatched normally
    virtual bool MSWShouldPreProcessMessage(WXMSG* pMsg);

    // return true if the message was preprocessed and shouldn't be dispatched
    virtual bool MSWProcessMessage(WXMSG* pMsg);

    // return true if the message was translated and shouldn't be dispatched
    virtual bool MSWTranslateMessage(WXMSG* pMsg);

    // called when the window is about to be destroyed
    virtual void MSWDestroyWindow();


    // this function should return the brush to paint the children controls
    // background or 0 if this window doesn't impose any particular background
    // on its children
    //
    // the base class version returns a solid brush if we have a non default
    // background colour or 0 otherwise
    virtual WXHBRUSH MSWGetBgBrushForChild(WXHDC hDC, WXHWND hWnd);

    // return the background brush to use for painting the given window by
    // quering the parent windows via their MSWGetBgBrushForChild() recursively
    //
    // hWndToPaint is normally NULL meaning this window itself, but it can also
    // be a child of this window which is used by the static box and could be
    // potentially useful for other transparent controls
    WXHBRUSH MSWGetBgBrush(WXHDC hDC, WXHWND hWndToPaint = NULL);

    // gives the parent the possibility to draw its children background, e.g.
    // this is used by wxNotebook to do it using DrawThemeBackground()
    //
    // return true if background was drawn, false otherwise
    virtual bool MSWPrintChild(WXHDC WXUNUSED(hDC), wxWindow * WXUNUSED(child))
    {
        return false;
    }

    // some controls (e.g. wxListBox) need to set the return value themselves
    //
    // return true to let parent handle it if we don't, false otherwise
    virtual bool MSWShouldPropagatePrintChild()
    {
        return true;
    }


    // Responds to colour changes: passes event on to children.
    void OnSysColourChanged(wxSysColourChangedEvent& event);

    // initialize various fields of wxMouseEvent (common part of MSWOnMouseXXX)
    void InitMouseEvent(wxMouseEvent& event, int x, int y, WXUINT flags);

    // check if mouse is in the window
    bool IsMouseInWindow() const;

    // synthesize a wxEVT_LEAVE_WINDOW event and set m_mouseInWindow to false
    void GenerateMouseLeave();

    // virtual function for implementing internal idle
    // behaviour
    virtual void OnInternalIdle();

protected:

#if wxUSE_MENUS_NATIVE
    virtual bool DoPopupMenu( wxMenu *menu, int x, int y );
#endif // wxUSE_MENUS_NATIVE

    // the window handle
    WXHWND                m_hWnd;

    // the old window proc (we subclass all windows)
    WXFARPROC             m_oldWndProc;

    // additional (MSW specific) flags
    bool                  m_mouseInWindow:1;
    bool                  m_lastKeydownProcessed:1;

    // the size of one page for scrolling
    int                   m_xThumbSize;
    int                   m_yThumbSize;

    // implement the base class pure virtuals
    virtual void DoClientToScreen( int *x, int *y ) const;
    virtual void DoScreenToClient( int *x, int *y ) const;
    virtual void DoGetPosition( int *x, int *y ) const;
    virtual void DoGetSize( int *width, int *height ) const;
    virtual void DoGetClientSize( int *width, int *height ) const;
    virtual void DoSetSize(int x, int y,
                           int width, int height,
                           int sizeFlags = wxSIZE_AUTO);
    virtual void DoSetClientSize(int width, int height);

    virtual void DoCaptureMouse();
    virtual void DoReleaseMouse();

    // has the window been frozen by Freeze()?
    bool IsFrozen() const { return m_frozenness > 0; }

    // this simply moves/resizes the given HWND which is supposed to be our
    // sibling (this is useful for controls which are composite at MSW level
    // and for which DoMoveWindow() is not enough)
    //
    // returns true if the window move was deferred, false if it was moved
    // immediately (no error return)
    bool DoMoveSibling(WXHWND hwnd, int x, int y, int width, int height);

    // move the window to the specified location and resize it: this is called
    // from both DoSetSize() and DoSetClientSize() and would usually just call
    // ::MoveWindow() except for composite controls which will want to arrange
    // themselves inside the given rectangle
    virtual void DoMoveWindow(int x, int y, int width, int height);

#if wxUSE_TOOLTIPS
    virtual void DoSetToolTip( wxToolTip *tip );

    // process TTN_NEEDTEXT message properly (i.e. fixing the bugs in
    // comctl32.dll in our code -- see the function body for more info)
    bool HandleTooltipNotify(WXUINT code,
                             WXLPARAM lParam,
                             const wxString& ttip);
#endif // wxUSE_TOOLTIPS

    // the helper functions used by HandleChar/KeyXXX methods
    wxKeyEvent CreateKeyEvent(wxEventType evType, int id,
                              WXLPARAM lParam = 0, WXWPARAM wParam = 0) const;


    // default OnEraseBackground() implementation, return true if we did erase
    // the background, false otherwise (i.e. the system should erase it)
    bool DoEraseBackground(WXHDC hDC);

    // generate WM_CHANGEUISTATE if it's needed for the OS we're running under
    //
    // action should be one of the UIS_XXX constants
    // state should be one or more of the UISF_XXX constants
    // if action == UIS_INITIALIZE then it doesn't seem to matter what we use
    // for state as the system will decide for us what needs to be set
    void MSWUpdateUIState(int action, int state = 0);

private:
    // common part of all ctors
    void Init();

    // the (non-virtual) handlers for the events
    bool HandleMove(int x, int y);
    bool HandleMoving(wxRect& rect);
    bool HandleJoystickEvent(WXUINT msg, int x, int y, WXUINT flags);
    bool HandleNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result);

    // list of disabled children before last call to our Disable()
    wxWindowList *m_childrenDisabled;

    // number of calls to Freeze() minus number of calls to Thaw()
    unsigned int m_frozenness;

    // current defer window position operation handle (may be NULL)
    WXHANDLE m_hDWP;

protected:
    // When deferred positioning is done these hold the pending changes, and
    // are used for the default values if another size/pos changes is done on
    // this window before the group of deferred changes is completed.
    wxPoint     m_pendingPosition;
    wxSize      m_pendingSize;

private:
#ifdef __POCKETPC__
    bool        m_contextMenuEnabled;
#endif

    DECLARE_DYNAMIC_CLASS(wxWindowMSW)
    DECLARE_NO_COPY_CLASS(wxWindowMSW)
    DECLARE_EVENT_TABLE()
};

// ----------------------------------------------------------------------------
// inline functions
// ----------------------------------------------------------------------------

#if WXWIN_COMPATIBILITY_2_4

inline bool wxWindowMSW::GetUseCtl3D() const { return false; }
inline bool wxWindowMSW::GetTransparentBackground() const { return false; }
inline void wxWindowMSW::SetTransparent(bool WXUNUSED(t)) { }

#endif // WXWIN_COMPATIBILITY_2_4

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

// kbd code translation
WXDLLEXPORT int wxCharCodeMSWToWX(int keySym, WXLPARAM lParam = 0);
WXDLLEXPORT WXWORD wxCharCodeWXToMSW(int id, bool *IsVirtual = NULL);

// window creation helper class: before creating a new HWND, instantiate an
// object of this class on stack - this allows to process the messages sent to
// the window even before CreateWindow() returns
class wxWindowCreationHook
{
public:
    wxWindowCreationHook(wxWindowMSW *winBeingCreated);
    ~wxWindowCreationHook();
};

// ----------------------------------------------------------------------------
// global objects
// ----------------------------------------------------------------------------

// notice that this hash must be defined after wxWindow declaration as it
// needs to "see" its dtor and not just forward declaration
#include "wx/hash.h"

// pseudo-template HWND <-> wxWindow hash table
#if WXWIN_COMPATIBILITY_2_4
WX_DECLARE_HASH(wxWindow, wxWindowList, wxWinHashTable);
#else
WX_DECLARE_HASH(wxWindowMSW, wxWindowList, wxWinHashTable);
#endif

extern wxWinHashTable *wxWinHandleHash;

#endif // _WX_WINDOW_H_