C++ OpenThemeData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;
}

void threaded_process_v2_t::refresh_title_font()
{
	LOGFONT lf;
	memset(&lf, 0, sizeof(LOGFONT));
	m_titlecolour = GetSysColor(COLOR_WINDOWTEXT);

	HTHEME thm_textstyle = IsThemeActive() && IsAppThemed() ? OpenThemeData(get_wnd(), L"TextStyle") : NULL;
	if (thm_textstyle)
	{
		if (SUCCEEDED(GetThemeFont(thm_textstyle, NULL, TEXT_MAININSTRUCTION, 0, TMT_FONT, &lf)))
		{
			m_titlefont = CreateFontIndirect(&lf);
			GetThemeColor(thm_textstyle, TEXT_MAININSTRUCTION, NULL, TMT_TEXTCOLOR, &m_titlecolour);
		}
		CloseThemeData(thm_textstyle);
	}

	if (!m_titlefont.is_valid())
	{
		uGetIconFont(&lf);
		lf.lfWeight = FW_BOLD;
		m_titlefont = CreateFontIndirect(&lf);
	}

	m_titlefont_height = uGetFontHeight(m_titlefont);
}

CRect CPropPageFrameDefault::CalcCaptionArea()
{
	CRect	rect;
	GetClientRect(rect);
	if (IsAppThemed())
	{
		HTHEME hTheme = OpenThemeData(m_hWnd, L"Tab");
		if (hTheme)
		{
			CRect	rectContent;
			CDC		*pDc = GetDC();
			GetThemeBackgroundContentRect(hTheme, pDc->m_hDC, TABP_PANE, 0, rect, rectContent);
			ReleaseDC(pDc);
			CloseThemeData(hTheme);

			if (GetShowCaption())
				rectContent.bottom = rect.top+GetCaptionHeight();
			else
				rectContent.bottom = rectContent.top;

			rect = rectContent;
		}
	}
	else
	{
		if (GetShowCaption())
			rect.bottom = rect.top+GetCaptionHeight();
		else
			rect.bottom = rect.top;
	}

	return rect;
}

void CToolBarTreeView::Draw()
{
	const int& cx = m_mdc.cx;
	const int& cy = m_mdc.cy;

	if (IsAppThemed())
	{
		HTHEME hTheme = OpenThemeData(m_hWnd, L"TREEVIEW");
		ASSERT(hTheme);
		RECT rc = {0, 0, cx, cy};
		DrawThemeBackground(hTheme, m_mdc, LBCP_BORDER_NOSCROLL, LBPSN_NORMAL, &rc, NULL);
		CloseThemeData(hTheme);

		// TODO: detect size of border (check for high DPI)
		DrawRect(m_mdc, 1, 1, cx - 2, SCY(24), GetSysColor(COLOR_BTNFACE), 96);
		DrawRect(m_mdc, 1, 1 + SCY(24) - 1, cx - 2, 1, GetSysColor(COLOR_BTNFACE), 192);
	}
	else
	{
		RECT rc = {0, 0, cx, cy};
		FillSolidRect(m_mdc, &rc, GetSysColor(COLOR_WINDOW));
		FillSolidRect(m_mdc, 1, 1, cx - 2, SCY(24), GetSysColor(COLOR_BTNFACE));
		DrawEdge(m_mdc, &rc, EDGE_SUNKEN, BF_RECT);
	}
}

int CPopupFrame::OnCreate(LPCREATESTRUCT lpCreateStruct) 
{
	if (CFrameWnd::OnCreate(lpCreateStruct) == -1)
		return -1;

	m_hThemeDLL = ::LoadLibrary(_T("uxtheme.dll"));
	if (m_hThemeDLL != NULL)
	{
		m_pfnDrawThemeBackground = (PFN_DrawThemeBackground)::GetProcAddress(m_hThemeDLL, "DrawThemeBackground");
		ASSERT(m_pfnDrawThemeBackground != NULL);
		if(m_pfnDrawThemeBackground != NULL)
		{
			OpenThemeData();
		}
		else
		{
			::FreeLibrary(m_hThemeDLL);
			m_hThemeDLL = NULL;
		}
	}

	GetSystemSettings();

	DWORD dwStyle = GetStyle();
	m_cxFrameWidth = (dwStyle & WS_THICKFRAME) ? GetSystemMetrics(SM_CXSIZEFRAME) : GetSystemMetrics(SM_CXFIXEDFRAME);
	m_cyFrameHeight = (dwStyle & WS_THICKFRAME) ? GetSystemMetrics(SM_CYSIZEFRAME) : GetSystemMetrics(SM_CYFIXEDFRAME);
	
	return 0;
}

/********************************************
WriteText
	Purpose
		Provides a more straightforward way to draw text by wrapping all the calls required into the dll,
		as well as using our theme data mappings to find the core info required.  Was called DrawText, 
		but the preprocessor insisted on changing it to DrawTextA, which then obviously would not compile
	Params
		hwnd           - the HWND of the control we draw to, or NULL
		hdc            - the device context for the dll to draw to
		type	       - the cell type to draw
		state          - the state of the cell ( selected, current, etc )
		text	       - the text to draw
		textLength     - the number of characters to draw
		textFlags      - the text style to use when drawing the text area
		pRect          - the rect to draw text into
	Return
		A  bool to indicate success or failure, which is used to control drawing in the old style throughout the library
*********************************************/
bool UGXPThemes::WriteText(HWND hwnd, HDC hdc, UGXPCellType type, 
		UGXPThemeState state, LPCTSTR text, int textLength, DWORD textFlags, const RECT *pRect)
{
	bool success = false;

	if (useThemes)
	{
		UGThemeData * td = LookupThemeData(type, state);

		if (!td)
		{
			return false;
		}

		HANDLE hTheme = OpenThemeData(hwnd, td->GetThemeName());

		if(hTheme)
		{
			USES_CONVERSION;

			success = SUCCEEDED(DrawThemeText(hTheme, hdc, td->GetPartID(), td->GetStateID(), T2W((LPTSTR)text), textLength, textFlags, 0, pRect));
	//		CloseThemeData(hTheme);
			success = true;
		}
	}
	
	return success;
}

/********************************************
WriteText
	Purpose
		Provides a more straightforward way to draw text by wrapping all the calls required into the dll,
		as well as using our theme data mappings to find the core info required.  Was called DrawText, 
		but the preprocessor insisted on changing it to DrawTextA, which then obviously would not compile
	Params
		hwnd           - the HWND of the control we draw to, or NULL
		hdc            - the device context for the dll to draw to
		theme          - the name of the theme to use
		partId         - the theme part to draw
		stateId        - the state of the part to draw
		text	       - the text to draw, which is converted from a char * to a wide string in this method.
		textLength     - the number of characters to draw
		textFlags      - the text style to use when drawing the text area
		pRect          - the rect to draw text into
	Return
		A  bool to indicate success or failure, which is used to control drawing in the old style throughout the library
*********************************************/
bool UGXPThemes::WriteText(HWND hwnd, HDC hdc, LPCTSTR theme, int partID, 
		int stateID, LPCTSTR text, int textLength, DWORD textFlags, const RECT *pRect, bool useCache)
{
	bool success = false;

	if (useThemes)
	{
		USES_CONVERSION;

		HANDLE themeHandle = OpenThemeData(hwnd, T2W((LPTSTR)theme), useCache);

		if (themeHandle)
		{
			HRESULT hr = DrawThemeText(themeHandle, hdc, partID, stateID, T2W((LPTSTR)text), textLength, textFlags, 0, pRect);
			success = SUCCEEDED(hr);

			if (!useCache)
			{
				CloseThemeData(themeHandle);
			}
		}
	}

	return success;

}

static HRESULT drawCheckboxPart(HRESULT hr, struct drawState *s)
{
	uiTableValue *value;
	int checked, enabled;
	HTHEME theme;

	if (hr != S_OK)
		return hr;
	if (s->p->checkboxModelColumn == -1)
		return S_OK;

	value = uiprivTableModelCellValue(s->model, s->iItem, s->p->checkboxModelColumn);
	checked = uiTableValueInt(value);
	uiFreeTableValue(value);
	enabled = uiprivTableModelCellEditable(s->model, s->iItem, s->p->checkboxEditableModelColumn);

	theme = OpenThemeData(s->t->hwnd, L"button");
	if (theme != NULL) {
		hr = drawThemedCheckbox(s, theme, checked, enabled);
		if (hr != S_OK)
			return hr;
		hr = CloseThemeData(theme);
		if (hr != S_OK) {
			logHRESULT(L"CloseThemeData()", hr);
			return hr;
		}
	} else {
		hr = drawUnthemedCheckbox(s, checked, enabled);
		if (hr != S_OK)
			return hr;
	}
	return S_OK;
}

VOID NcAreaInitializeTheme(
    _Inout_ PEDIT_CONTEXT Context
    )
{
    Context->CXWidth = PhMultiplyDivide(20, PhGlobalDpi, 96);
    Context->BrushNormal = GetSysColorBrush(COLOR_WINDOW);
    Context->BrushHot = CreateSolidBrush(RGB(205, 232, 255));
    Context->BrushPushed = CreateSolidBrush(RGB(153, 209, 255));

    if (IsThemeActive())
    {
        HTHEME themeDataHandle;

        if (themeDataHandle = OpenThemeData(Context->WindowHandle, VSCLASS_EDIT))
        {
            //IsThemePartDefined_I(themeDataHandle, EP_EDITBORDER_NOSCROLL, EPSHV_NORMAL);

            GetThemeInt(
                themeDataHandle,
                EP_EDITBORDER_NOSCROLL,
                EPSHV_NORMAL,
                TMT_BORDERSIZE,
                &Context->CXBorder
                );

            CloseThemeData(themeDataHandle);
        }
    }
    else
    {
        Context->CXBorder = GetSystemMetrics(SM_CXBORDER) * 2;
    }
}

/* 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;
}

// TODO run again when the DPI or the theme changes
// TODO properly clean things up here
// TODO properly destroy the old lists here too
HRESULT uiprivUpdateImageListSize(uiTable *t)
{
	HDC dc;
	int cxList, cyList;
	HTHEME theme;
	SIZE sizeCheck;
	HRESULT hr;

	dc = GetDC(t->hwnd);
	if (dc == NULL) {
		logLastError(L"GetDC()");
		return E_FAIL;
	}

	cxList = GetSystemMetrics(SM_CXSMICON);
	cyList = GetSystemMetrics(SM_CYSMICON);
	sizeCheck.cx = cxList;
	sizeCheck.cy = cyList;
	theme = OpenThemeData(t->hwnd, L"button");
	if (theme != NULL) {
		hr = GetThemePartSize(theme, dc,
			BP_CHECKBOX, CBS_UNCHECKEDNORMAL,
			NULL, TS_DRAW, &sizeCheck);
		if (hr != S_OK) {
			logHRESULT(L"GetThemePartSize()", hr);
			return hr;			// TODO fall back?
		}
		// make sure these checkmarks fit
		// unthemed checkmarks will by the code above be smaller than cxList/cyList here
		if (cxList < sizeCheck.cx)
			cxList = sizeCheck.cx;
		if (cyList < sizeCheck.cy)
			cyList = sizeCheck.cy;
		hr = CloseThemeData(theme);
		if (hr != S_OK) {
			logHRESULT(L"CloseThemeData()", hr);
			return hr;
		}
	}

	// TODO handle errors
	t->imagelist = ImageList_Create(cxList, cyList,
		ILC_COLOR32,
		1, 1);
	if (t->imagelist == NULL) {
		logLastError(L"ImageList_Create()");
		return E_FAIL;
	}
	// TODO will this return NULL here because it's an initial state?
	SendMessageW(t->hwnd, LVM_SETIMAGELIST, LVSIL_SMALL, (LPARAM) (t->imagelist));

	if (ReleaseDC(t->hwnd, dc) == 0) {
		logLastError(L"ReleaseDC()");
		return E_FAIL;
	}
	return S_OK;
}

LRESULT CPopupFrame::OnThemeChanged(WPARAM, LPARAM)
{
	if (m_hThemeDLL != NULL)
	{
		CloseThemeData();
		OpenThemeData();
	}

	return 0;
}

int LTIndefProgressBar::OnCreate(LPCREATESTRUCT lpCreateStruct)
{
	if (CWnd::OnCreate(lpCreateStruct) == -1)
		return -1;

	SetTimer(PROGRESS_TIMER, 30, NULL);
	h_ThemeBar = OpenThemeData(m_hWnd, L"PROGRESS");
	// TODO:  Add your specialized creation code here

	return 0;
}

/********************************************
DrawBackground
	Purpose
		Provides a more straightforward way to draw a background by wrapping all the calls required into the dll,
		as well as using our theme data mappings to find the core info required.
	Params
		hwnd - the HWND of the control we draw to, or NUL
		hdc - the device context for the dll to draw to
		type - the cell type we want to draw
		state - the state of the cell we want to draw
		pRect - represents the area we want to draw to
		pClipRect - is exposed, but is almost always NULL
	Return
		A  bool to indicate success or failure, which is used to control drawing in the old style throughout the library
*********************************************/
bool UGXPThemes::DrawBackground(HWND hwnd, HDC hdc, UGXPCellType type, 
		UGXPThemeState state, const RECT *pRect, const RECT *pClipRect)
{
	bool success = false;

	if (useThemes)
	{
		UGThemeData * td = LookupThemeData(type, state);

		if (!td)
		{
			return false;
		}

		HANDLE hTheme = OpenThemeData(hwnd, td->GetThemeName());

		if(hTheme)
		{
			// If the background is transparent, we draw using the Data cell type first,
			// which fills the background.  DrawThemeParentBackground just plain does not work
			// for us, perhaps because the parent is an owner drawn control ?
			// Of course, if the Data cell type has transparency, all we can do is return E_FAILED
			if (IsThemeBackgroundPartiallyTransparent(hTheme, td->GetPartID(), td->GetStateID()))
			{
				if (type == XPCellTypeData) return FALSE;

				UGThemeData * tdCell = LookupThemeData(XPCellTypeData, (state == ThemeStatePressed || state == ThemeStateTriState) ? ThemeStateNormal : state);

				HANDLE hThemeCell = OpenThemeData(hwnd, tdCell->GetThemeName());

				DrawThemeBackground(hThemeCell, hdc, tdCell->GetPartID(), tdCell->GetStateID(), pRect, pClipRect);
			}

			success = SUCCEEDED(DrawThemeBackground(hTheme, hdc, td->GetPartID(), td->GetStateID(), pRect, pClipRect));
	//		CloseThemeData(hTheme);
		}
	}
	
	return success;
}

/********************************************
DrawBackground
	Purpose
		Provides a more straightforward way to draw a background by wrapping all the calls required into the dll,
		as well as using our theme data mappings to find the core info required.
		This version still takes a theme name instead of using our lookup
		table, it's used in cases where we hard code the theme part ( such a progress bars )
	Params
		hwnd      - the HWND of the control we draw to, or NUL
		hdc       - the device context for the dll to draw to
		theme     - the name of the theme to use
		iPartId   - the theme part to draw
		iStateId  - the state of the part to draw
		pRect     - represents the area we want to draw to
		pClipRect - is exposed, but is almost always NULL
	Return
		A  bool to indicate success or failure, which is used to control drawing in the old style throughout the library
*********************************************/
bool UGXPThemes::DrawBackground(HWND hwnd, HDC hdc, LPCWSTR theme, int partID, 
		int stateID,  const RECT *pRect, const RECT *pClipRect, bool useCache)
{
	bool success = false;

	if (useThemes)
	{
		HANDLE themeHandle = OpenThemeData(hwnd, theme, useCache);

		if (themeHandle)
		{
			// If the background is transparent, we draw using the Data cell type first,
			// which fills the background.  DrawThemeParentBackground just plain does not work
			// for us, perhaps because the parent is an owner drawn control ?
			// Of course, if the Data cell type has transparency, this will fail.
			if (IsThemeBackgroundPartiallyTransparent(themeHandle, partID, stateID))
			{
				//RECT temp = *pRect;
				UGThemeData * tdCell = LookupThemeData(XPCellTypeData, ThemeStateNormal);

				HANDLE hThemeCell = OpenThemeData(hwnd, tdCell->GetThemeName());

				DrawThemeBackground(hThemeCell, hdc, partID, stateID, pRect, pClipRect);
			}

			HRESULT hr = DrawThemeBackground(themeHandle, hdc, partID, stateID, pRect, pClipRect);
			success = SUCCEEDED(hr);

			if (!useCache)
			{
				CloseThemeData(themeHandle);
			}
		}
	}

	return success;

}