C++ GetWindowTheme函数代码示例

/**********************************************************************
 * The edit control subclass window proc.
 */
LRESULT CALLBACK THEMING_EditSubclassProc (HWND hwnd, UINT msg, 
                                           WPARAM wParam, LPARAM lParam, 
                                           ULONG_PTR dwRefData)
{
    const WCHAR* themeClass = WC_EDITW;
    HTHEME theme;
    LRESULT result;
      
    switch (msg)
    {
    case WM_CREATE:
        result = THEMING_CallOriginalClass  (hwnd, msg, wParam, lParam);
        OpenThemeData( hwnd, themeClass );
        return result;
    
    case WM_DESTROY:
        theme = GetWindowTheme( hwnd );
        CloseThemeData ( theme );
        return THEMING_CallOriginalClass (hwnd, msg, wParam, lParam);

    case WM_THEMECHANGED:
        theme = GetWindowTheme( hwnd );
        CloseThemeData ( theme );
        OpenThemeData( hwnd, themeClass );
        break;
        
    case WM_SYSCOLORCHANGE:
        theme = GetWindowTheme( hwnd );
	if (!theme) return THEMING_CallOriginalClass (hwnd, msg, wParam, lParam);
        /* Do nothing. When themed, a WM_THEMECHANGED will be received, too,
   	 * which will do the repaint. */
        break;
        
    case WM_NCPAINT:
        theme = GetWindowTheme( hwnd );
        if (!theme) return THEMING_CallOriginalClass (hwnd, msg, wParam, lParam);
        nc_paint (theme, hwnd, (HRGN)wParam);
        break;

    case WM_ENABLE:
    case WM_KILLFOCUS:
    case WM_SETFOCUS:
        theme = GetWindowTheme( hwnd );
        if (theme) RedrawWindow (hwnd, NULL, NULL, 
            RDW_FRAME | RDW_INVALIDATE | RDW_UPDATENOW);
        return THEMING_CallOriginalClass (hwnd, msg, wParam, lParam);
        
    default: 
	/* Call old proc */
	return THEMING_CallOriginalClass (hwnd, msg, wParam, lParam);
    }
    return 0;
}

/***********************************************************************
 * UPDOWN_Draw
 *
 * Draw the arrows. The background need not be erased.
 */
static LRESULT UPDOWN_Draw (const UPDOWN_INFO *infoPtr, HDC hdc)
{
    BOOL uPressed, uHot, dPressed, dHot;
    RECT rect;
    HTHEME theme = GetWindowTheme (infoPtr->Self);
    int uPart = 0, uState = 0, dPart = 0, dState = 0;
    BOOL needBuddyBg = FALSE;

    uPressed = (infoPtr->Flags & FLAG_PRESSED) && (infoPtr->Flags & FLAG_INCR);
    uHot = (infoPtr->Flags & FLAG_INCR) && (infoPtr->Flags & FLAG_MOUSEIN);
    dPressed = (infoPtr->Flags & FLAG_PRESSED) && (infoPtr->Flags & FLAG_DECR);
    dHot = (infoPtr->Flags & FLAG_DECR) && (infoPtr->Flags & FLAG_MOUSEIN);
    if (theme) {
        uPart = (infoPtr->dwStyle & UDS_HORZ) ? SPNP_UPHORZ : SPNP_UP;
        uState = (infoPtr->dwStyle & WS_DISABLED) ? DNS_DISABLED 
            : (uPressed ? DNS_PRESSED : (uHot ? DNS_HOT : DNS_NORMAL));
        dPart = (infoPtr->dwStyle & UDS_HORZ) ? SPNP_DOWNHORZ : SPNP_DOWN;
        dState = (infoPtr->dwStyle & WS_DISABLED) ? DNS_DISABLED 
            : (dPressed ? DNS_PRESSED : (dHot ? DNS_HOT : DNS_NORMAL));
        needBuddyBg = IsWindow (infoPtr->Buddy)
            && (IsThemeBackgroundPartiallyTransparent (theme, uPart, uState)
              || IsThemeBackgroundPartiallyTransparent (theme, dPart, dState));
    }

    /* Draw the common border between ourselves and our buddy */
    if (UPDOWN_HasBuddyBorder(infoPtr) || needBuddyBg) {
        if (!theme || !UPDOWN_DrawBuddyBackground (infoPtr, hdc)) {
            GetClientRect(infoPtr->Self, &rect);
	    DrawEdge(hdc, &rect, EDGE_SUNKEN,
		     BF_BOTTOM | BF_TOP |
		     (infoPtr->dwStyle & UDS_ALIGNLEFT ? BF_LEFT : BF_RIGHT));
        }
    }

    /* Draw the incr button */
    UPDOWN_GetArrowRect (infoPtr, &rect, FLAG_INCR);
    if (theme) {
        DrawThemeBackground(theme, hdc, uPart, uState, &rect, NULL);
    } else {
        DrawFrameControl(hdc, &rect, DFC_SCROLL,
            (infoPtr->dwStyle & UDS_HORZ ? DFCS_SCROLLRIGHT : DFCS_SCROLLUP) |
            ((infoPtr->dwStyle & UDS_HOTTRACK) && uHot ? DFCS_HOT : 0) |
            (uPressed ? DFCS_PUSHED : 0) |
            (infoPtr->dwStyle & WS_DISABLED ? DFCS_INACTIVE : 0) );
    }

    /* Draw the decr button */
    UPDOWN_GetArrowRect(infoPtr, &rect, FLAG_DECR);
    if (theme) {
        DrawThemeBackground(theme, hdc, dPart, dState, &rect, NULL);
    } else {
        DrawFrameControl(hdc, &rect, DFC_SCROLL,
            (infoPtr->dwStyle & UDS_HORZ ? DFCS_SCROLLLEFT : DFCS_SCROLLDOWN) |
            ((infoPtr->dwStyle & UDS_HOTTRACK) && dHot ? DFCS_HOT : 0) |
            (dPressed ? DFCS_PUSHED : 0) |
            (infoPtr->dwStyle & WS_DISABLED ? DFCS_INACTIVE : 0) );
    }

    return 0;
}

/* update theme after a WM_THEMECHANGED message */
static LRESULT theme_changed (const STATUS_INFO* infoPtr)
{
    HTHEME theme = GetWindowTheme (infoPtr->Self);
    CloseThemeData (theme);
    OpenThemeData (infoPtr->Self, themeClass);
    return 0;
}

static void
STATUSBAR_RefreshPart (const STATUS_INFO *infoPtr, HDC hdc, const STATUSWINDOWPART *part, int itemID)
{
    HBRUSH hbrBk;
    HTHEME theme;

    TRACE("item %d\n", itemID);

    if (part->bound.right < part->bound.left) return;

    if (!RectVisible(hdc, &part->bound))
        return;

    if ((theme = GetWindowTheme (infoPtr->Self)))
    {
        RECT cr;
        GetClientRect (infoPtr->Self, &cr);
        DrawThemeBackground(theme, hdc, 0, 0, &cr, &part->bound);
    }
    else
    {
        if (infoPtr->clrBk != CLR_DEFAULT)
                hbrBk = CreateSolidBrush (infoPtr->clrBk);
        else
                hbrBk = GetSysColorBrush (COLOR_3DFACE);
        FillRect(hdc, &part->bound, hbrBk);
        if (infoPtr->clrBk != CLR_DEFAULT)
                DeleteObject (hbrBk);
    }

    STATUSBAR_DrawPart (infoPtr, hdc, part, itemID);
}

static LRESULT
STATUSBAR_WMDestroy (STATUS_INFO *infoPtr)
{
    unsigned int i;

    TRACE("\n");
    for (i = 0; i < infoPtr->numParts; i++) {
	if (!(infoPtr->parts[i].style & SBT_OWNERDRAW))
	    Free (infoPtr->parts[i].text);
    }
    if (!(infoPtr->part0.style & SBT_OWNERDRAW))
	Free (infoPtr->part0.text);
    Free (infoPtr->parts);

    /* delete default font */
    if (infoPtr->hDefaultFont)
	DeleteObject (infoPtr->hDefaultFont);

    /* delete tool tip control */
    if (infoPtr->hwndToolTip)
	DestroyWindow (infoPtr->hwndToolTip);

    CloseThemeData (GetWindowTheme (infoPtr->Self));

    SetWindowLongPtrW(infoPtr->Self, 0, 0);
    Free (infoPtr);
    return 0;
}

static UINT
STATUSBAR_ComputeHeight(STATUS_INFO *infoPtr)
{
    HTHEME theme;
    UINT height;
    TEXTMETRICW tm;
    int margin;

    COMCTL32_GetFontMetrics(infoPtr->hFont ? infoPtr->hFont : infoPtr->hDefaultFont, &tm);
    margin = (tm.tmInternalLeading ? tm.tmInternalLeading : 2);
    height = max(tm.tmHeight + margin + 2*GetSystemMetrics(SM_CYBORDER), infoPtr->minHeight) + infoPtr->verticalBorder;

    if ((theme = GetWindowTheme(infoPtr->Self)))
    {
        /* Determine bar height from theme such that the content area is
         * textHeight pixels large */
        HDC hdc = GetDC(infoPtr->Self);
        RECT r;

        SetRect(&r, 0, 0, 0, max(infoPtr->minHeight, tm.tmHeight));
        if (SUCCEEDED(GetThemeBackgroundExtent(theme, hdc, SP_PANE, 0, &r, &r)))
        {
            height = r.bottom - r.top;
        }
        ReleaseDC(infoPtr->Self, hdc);
    }

    TRACE("    textHeight=%d+%d, final height=%d\n", tm.tmHeight, tm.tmInternalLeading, height);
    return height;
}

/***********************************************************************
 * UPDOWN_DrawBuddyBackground
 *
 * Draw buddy background for visual integration.
 */
static BOOL UPDOWN_DrawBuddyBackground (const UPDOWN_INFO *infoPtr, HDC hdc)
{
    RECT br;
    HTHEME buddyTheme = GetWindowTheme (infoPtr->Buddy);
    if (!buddyTheme) return FALSE;

    GetClientRect (infoPtr->Buddy, &br);
    MapWindowPoints (infoPtr->Buddy, infoPtr->Self, (POINT*)&br, 2);
    /* FIXME: take disabled etc. into account */
    DrawThemeBackground (buddyTheme, hdc, 0, 0, &br, NULL);
    return TRUE;
}

/* Helper to obtain gap between progress bar chunks */
static inline int get_led_gap ( PROGRESS_INFO *infoPtr )
{
    HTHEME theme = GetWindowTheme (infoPtr->Self);
    if (theme)
    {
        int spaceSize;
        if (SUCCEEDED( GetThemeInt( theme, 0, 0, TMT_PROGRESSSPACESIZE, &spaceSize )))
            return spaceSize;
    }

    return LED_GAP;
}

static void
STATUSBAR_DrawPart (const STATUS_INFO *infoPtr, HDC hdc, const STATUSWINDOWPART *part, int itemID)
{
    RECT r = part->bound;
    UINT border = BDR_SUNKENOUTER;
    HTHEME theme = GetWindowTheme (infoPtr->Self);
    int themePart = SP_PANE;
    int x = 0;

    TRACE("part bound %s\n", wine_dbgstr_rect(&r));
    if (part->style & SBT_POPOUT)
        border = BDR_RAISEDOUTER;
    else if (part->style & SBT_NOBORDERS)
        border = 0;

    if (theme)
    {
        if ((GetWindowLongW (infoPtr->Self, GWL_STYLE) & SBARS_SIZEGRIP)
            && (infoPtr->simple || (itemID == (infoPtr->numParts-1))))
            themePart = SP_GRIPPERPANE;
        DrawThemeBackground(theme, hdc, themePart, 0, &r, NULL);
    }
    else
        DrawEdge(hdc, &r, border, BF_RECT|BF_ADJUST);

    if (part->hIcon) {
        INT cy = r.bottom - r.top;
        DrawIconEx (hdc, r.left + 2, r.top, part->hIcon, cy, cy, 0, 0, DI_NORMAL);
        x = 2 + cy;
    }

    if (part->style & SBT_OWNERDRAW) {
	DRAWITEMSTRUCT dis;

	dis.CtlID = GetWindowLongPtrW (infoPtr->Self, GWLP_ID);
	dis.itemID = itemID;
	dis.hwndItem = infoPtr->Self;
	dis.hDC = hdc;
	dis.rcItem = r;
	dis.itemData = (ULONG_PTR)part->text;
        SendMessageW (infoPtr->Notify, WM_DRAWITEM, dis.CtlID, (LPARAM)&dis);
    } else {
        r.left += x;
#ifdef __REACTOS__
        if (!theme)
            DrawStatusTextW (hdc, &r, part->text, SBT_NOBORDERS);
        else
            DrawThemeText(theme, hdc, SP_PANE, 0, part->text, -1, DT_VCENTER|DT_SINGLELINE|DT_NOPREFIX, 0, &r);
#else
        DrawStatusTextW (hdc, &r, part->text, SBT_NOBORDERS);
#endif
    }
}

/* Get client rect. Takes into account that theming needs no adjustment. */
static inline void get_client_rect (HWND hwnd, RECT* rect)
{
    HTHEME theme = GetWindowTheme (hwnd);
    GetClientRect (hwnd, rect);
    if (!theme)
        InflateRect(rect, -1, -1);
    else
    {
        DWORD dwStyle = GetWindowLongW (hwnd, GWL_STYLE);
        int part = (dwStyle & PBS_VERTICAL) ? PP_BARVERT : PP_BAR;
        GetThemeBackgroundContentRect (theme, 0, part, 0, rect, rect);
    }
}

static LRESULT
STATUSBAR_Refresh (STATUS_INFO *infoPtr, HDC hdc)
{
    RECT   rect;
    HBRUSH hbrBk;
    HFONT  hOldFont;
    HTHEME theme;

    TRACE("\n");
    if (!IsWindowVisible(infoPtr->Self))
        return 0;

    STATUSBAR_SetPartBounds(infoPtr);

    GetClientRect (infoPtr->Self, &rect);

    if ((theme = GetWindowTheme (infoPtr->Self)))
    {
        DrawThemeBackground(theme, hdc, 0, 0, &rect, NULL);
    }
    else
    {
        if (infoPtr->clrBk != CLR_DEFAULT)
            hbrBk = CreateSolidBrush (infoPtr->clrBk);
        else
            hbrBk = GetSysColorBrush (COLOR_3DFACE);
        FillRect(hdc, &rect, hbrBk);
        if (infoPtr->clrBk != CLR_DEFAULT)
            DeleteObject (hbrBk);
    }

    hOldFont = SelectObject (hdc, infoPtr->hFont ? infoPtr->hFont : infoPtr->hDefaultFont);

    if (infoPtr->simple) {
	STATUSBAR_RefreshPart (infoPtr, hdc, &infoPtr->part0, 0);
    } else {
        unsigned int i;

	for (i = 0; i < infoPtr->numParts; i++) {
	    STATUSBAR_RefreshPart (infoPtr, hdc, &infoPtr->parts[i], i);
	}
    }

    SelectObject (hdc, hOldFont);

    if ((GetWindowLongW (infoPtr->Self, GWL_STYLE) & SBARS_SIZEGRIP)
            && !(GetWindowLongW (infoPtr->Notify, GWL_STYLE) & WS_MAXIMIZE))
	    STATUSBAR_DrawSizeGrip (theme, hdc, &rect);

    return 0;
}

HRESULT CMenuToolbarBase::ShowDW(BOOL fShow)
{
    ShowWindow(fShow ? SW_SHOW : SW_HIDE);

    // Ensure that the right image list is assigned to the toolbar
    UpdateImageLists();

    // For custom-drawing
    if (IsAppThemed())
        GetThemeSysBool(GetWindowTheme(m_hWnd), TMT_FLATMENUS);
    else
        SystemParametersInfo(SPI_GETFLATMENU, 0, &m_useFlatMenus, 0);

    return S_OK;
}

/* Helper to obtain size of a progress bar chunk ("led"). */
static inline int get_led_size ( PROGRESS_INFO *infoPtr, LONG style,
                                 const RECT* rect )
{
    HTHEME theme = GetWindowTheme (infoPtr->Self);
    if (theme)
    {
        int chunkSize;
        if (SUCCEEDED( GetThemeInt( theme, 0, 0, TMT_PROGRESSCHUNKSIZE, &chunkSize )))
            return chunkSize;
    }

    if (style & PBS_VERTICAL)
        return MulDiv (rect->right - rect->left, 2, 3);
    else
        return MulDiv (rect->bottom - rect->top, 2, 3);
}

/***********************************************************************
 *           UPDOWN_GetArrowRect
 * wndPtr   - pointer to the up-down wnd
 * rect     - will hold the rectangle
 * arrow    - FLAG_INCR to get the "increment" rect (up or right)
 *            FLAG_DECR to get the "decrement" rect (down or left)
 *            If both flags are present, the envelope is returned.
 */
static void UPDOWN_GetArrowRect (const UPDOWN_INFO* infoPtr, RECT *rect, int arrow)
{
    HTHEME theme = GetWindowTheme (infoPtr->Self);
    const int border = theme ? DEFAULT_BUDDYBORDER_THEMED : DEFAULT_BUDDYBORDER;
    const int spacer = theme ? DEFAULT_BUDDYSPACER_THEMED : DEFAULT_BUDDYSPACER;
    GetClientRect (infoPtr->Self, rect);

    /*
     * Make sure we calculate the rectangle to fit even if we draw the
     * border.
     */
    if (UPDOWN_HasBuddyBorder(infoPtr)) {
        if (infoPtr->dwStyle & UDS_ALIGNLEFT)
            rect->left += border;
        else
            rect->right -= border;

        InflateRect(rect, 0, -border);
    }

    /* now figure out if we need a space away from the buddy */
    if (IsWindow(infoPtr->Buddy) ) {
	if (infoPtr->dwStyle & UDS_ALIGNLEFT) rect->right -= spacer;
	else rect->left += spacer;
    }

    /*
     * We're calculating the midpoint to figure-out where the
     * separation between the buttons will lay. We make sure that we
     * round the uneven numbers by adding 1.
     */
    if (infoPtr->dwStyle & UDS_HORZ) {
        int len = rect->right - rect->left + 1; /* compute the width */
        if (arrow & FLAG_INCR)
            rect->left = rect->left + len/2;
        if (arrow & FLAG_DECR)
            rect->right =  rect->left + len/2 - (theme ? 0 : 1);
    } else {
        int len = rect->bottom - rect->top + 1; /* compute the height */
        if (arrow & FLAG_INCR)
            rect->bottom =  rect->top + len/2 - (theme ? 0 : 1);
        if (arrow & FLAG_DECR)
            rect->top =  rect->top + len/2;
    }
}

/***********************************************************************
 * UPDOWN_DrawBuddyBackground
 *
 * Draw buddy background for visual integration.
 */
static BOOL UPDOWN_DrawBuddyBackground (const UPDOWN_INFO *infoPtr, HDC hdc)
{
    RECT br, r;
    HTHEME buddyTheme = GetWindowTheme (infoPtr->Buddy);
    if (!buddyTheme) return FALSE;

    GetWindowRect (infoPtr->Buddy, &br);
    MapWindowPoints (NULL, infoPtr->Self, (POINT*)&br, 2);
    GetClientRect (infoPtr->Self, &r);

    if (infoPtr->dwStyle & UDS_ALIGNLEFT)
        br.left = r.left;
    else if (infoPtr->dwStyle & UDS_ALIGNRIGHT)
        br.right = r.right;
    /* FIXME: take disabled etc. into account */
    DrawThemeBackground (buddyTheme, hdc, 0, 0, &br, NULL);
    return TRUE;
}