自学教程：C++ GetWindowInfo函数代码示例

void LocalUpdateHandler::updateVideoRegion(){  ServerConfig *srvConf = Configurator::getInstance()->getServerConfig();  unsigned int interval = srvConf->getVideoRecognitionInterval();  DateTime curTime = DateTime::now();  if ((curTime - m_lastVidUpdTime).getTime() > interval) {    m_lastVidUpdTime = DateTime::now();    m_vidRegion.clear();    AutoLock al(srvConf);    StringVector *classNames = srvConf->getVideoClassNames();    std::vector<HWND> hwndVector;    std::vector<HWND>::iterator hwndIter;    WindowFinder::findWindowsByClass(classNames, &hwndVector);    for (hwndIter = hwndVector.begin(); hwndIter != hwndVector.end(); hwndIter++) {      HWND videoHWND = *hwndIter;      if (videoHWND != 0) {        WINDOWINFO wi;        wi.cbSize = sizeof(WINDOWINFO);        if (GetWindowInfo(videoHWND, &wi)) {          Rect videoRect(wi.rcClient.left, wi.rcClient.top,                         wi.rcClient.right, wi.rcClient.bottom);          videoRect.move(-GetSystemMetrics(SM_XVIRTUALSCREEN),                         -GetSystemMetrics(SM_YVIRTUALSCREEN));          m_vidRegion.addRect(&videoRect);        }      }    }  }}

static void winDialogGetWindowDecor(Ihandle* ih, int *border, int *caption, int menu){  WINDOWINFO wi;  wi.cbSize = sizeof(WINDOWINFO);  GetWindowInfo(ih->handle, &wi);  *border = wi.cxWindowBorders;  if (wi.rcClient.bottom == wi.rcClient.top ||       wi.rcClient.top > wi.rcWindow.bottom ||      wi.rcClient.bottom > wi.rcWindow.bottom)  {    if (wi.dwStyle & WS_CAPTION)    {      if (wi.dwExStyle & WS_EX_TOOLWINDOW)        *caption = GetSystemMetrics(SM_CYSMCAPTION); /* tool window */      else        *caption = GetSystemMetrics(SM_CYCAPTION);   /* normal window */    }    else      *caption = 0;  }  else  {    /* caption = window height - borders - client height - menu */    *caption = (wi.rcWindow.bottom-wi.rcWindow.top) - 2*wi.cyWindowBorders - (wi.rcClient.bottom-wi.rcClient.top) - menu;   }}

static char* winDialogGetActiveWindowAttrib(Ihandle* ih){  WINDOWINFO wininfo;  wininfo.cbSize = sizeof(WINDOWINFO);  GetWindowInfo(ih->handle, &wininfo);  return iupStrReturnBoolean (wininfo.dwWindowStatus & WS_ACTIVECAPTION); }    

	void Window::HandleSizeMessage()	{		WINDOWINFO info;		GetWindowInfo(m_handle, &info);		bool resized = false;		if (GetRectWidth(info.rcClient) != GetRectWidth(m_clientRect))			resized = true;		else if (GetRectHeight(info.rcClient) != GetRectHeight(m_clientRect))			resized = true;		m_clientRect = info.rcClient;		m_windowRect = info.rcWindow;						if (resized)		{			unsigned int clientWidth = GetClientWidth();			unsigned int clientHeight = GetClientHeight();			unsigned int windowWidth = GetWindowWidth();			unsigned int windowHeight = GetWindowHeight();			for (size_t i = 0; i < m_eventListeners.size(); ++i)			{				m_eventListeners[i]->WindowResized(clientWidth, clientHeight, windowWidth, windowHeight);			}		}	}

RKCaughtX11Window::RKCaughtX11Window (WId window_to_embed, int device_number) : RKMDIWindow (0, X11Window) {	RK_TRACE (MISC);	commonInit (device_number);	embedded = window_to_embed;#ifdef Q_WS_WIN	// unfortunately, trying to get KWindowInfo as below hangs on windows (KDElibs 4.2.3)	WINDOWINFO wininfo;	wininfo.cbSize = sizeof (WINDOWINFO);	GetWindowInfo (embedded, &wininfo);	// clip off the window frame and menubar	xembed_container->setContentsMargins (wininfo.rcWindow.left - wininfo.rcClient.left, wininfo.rcWindow.top - wininfo.rcClient.top,				wininfo.rcClient.right - wininfo.rcWindow.right, wininfo.rcClient.bottom - wininfo.rcWindow.bottom);	// set a fixed size until the window is shown	xembed_container->setFixedSize (wininfo.rcClient.right - wininfo.rcClient.left, wininfo.rcClient.bottom - wininfo.rcClient.top);	setGeometry (wininfo.rcClient.left, wininfo.rcClient.right, wininfo.rcClient.top, wininfo.rcClient.bottom);	// see comment in X11 section	move (wininfo.rcClient.left, wininfo.rcClient.top);		// else the window frame may be off scree on top/left.#elif defined Q_WS_X11	KWindowInfo wininfo = KWindowSystem::windowInfo (embedded, NET::WMName | NET::WMGeometry);	RK_ASSERT (wininfo.valid ());	// set a fixed size until the window is shown	xembed_container->setFixedSize (wininfo.geometry ().width (), wininfo.geometry ().height ());	setGeometry (wininfo.geometry ());	// it's important to set a size, even while not visible. Else DetachedWindowContainer will assign a default size of 640*480, and then size upwards, if necessary.	setCaption (wininfo.name ());#endif	// somehow in Qt 4.4.3, when the RKCaughtWindow is reparented the first time, the QX11EmbedContainer may kill its client. Hence we delay the actual embedding until after the window was shown.	// In some previous version of Qt, this was not an issue, but I did not track the versions.	QTimer::singleShot (0, this, SLOT (doEmbed()));}

static int is_valid_window(HWND hwnd){	WINDOWINFO wi;	wi.cbSize = sizeof(wi);	GetWindowInfo(hwnd, &wi);	return (wi.dwStyle & WS_VISIBLE) && !(wi.dwExStyle & WS_EX_TOOLWINDOW);}

staticbool maybeAddWindow(HWND hwnd, std::vector<QRect> *windows) {    WINDOWINFO wi;    GetWindowInfo( hwnd, &wi );    RECT rect = wi.rcClient;#if 0    RECT rect;    GetWindowRect( hwnd, &rect );#endif    int width = rect.right - rect.left;    int height = rect.bottom - rect.top;    // For some reason, rect.left and rect.top are shifted by cxWindowBorders and cyWindowBorders pixels respectively     // in *every* case (for every window), but cxWindowBorders and cyWindowBorders are non-zero only in the     // biggest-window case, therefore we need to save the biggest cxWindowBorders and cyWindowBorders to adjust the rect later    cxWindowBorder = qMax(cxWindowBorder, wi.cxWindowBorders);    cyWindowBorder = qMax(cyWindowBorder, wi.cyWindowBorders);    if ( ( ( wi.dwStyle & WS_VISIBLE ) != 0 ) && (width >= minSize ) && (height >= minSize ) )    {        //QRect r( rect.left + 4, rect.top + 4, width, height); // 4 = max(wi.cxWindowBorders) = max(wi.cyWindowBorders)        QRect r(rect.left + cxWindowBorder, rect.top + cyWindowBorder, width, height);		if ( std::find( windows->begin(), windows->end(), r ) == windows->end() ) {            windows->push_back( r );            return true;                }    }    return false;}

static void draw_hilight_box (HWND hWnd, HDC hdc, COOLBARITEMDATA* item){    int  l,r,t,b;     WINDOWINFO *info = (WINDOWINFO*)GetWindowInfo (hWnd);    DWORD color;    DWORD mainc = GetWindowElementAttr (hWnd, WE_MAINC_THREED_BODY);    l = item->RcTitle.left;    t = item->RcTitle.top;    r = item->RcTitle.right - 1;    b = item->RcTitle.bottom - 1;    color = info->we_rdr->calc_3dbox_color (mainc, LFRDR_3DBOX_COLOR_DARKER);    SetPenColor (hdc,            RGBA2Pixel (hdc, GetRValue (color), GetGValue (color),                 GetBValue (color), GetAValue (color)));    MoveTo (hdc, l, t);    LineTo (hdc, l, b);    MoveTo (hdc, r - 1, t);    LineTo (hdc, r - 1, b);    color = info->we_rdr->calc_3dbox_color (mainc, LFRDR_3DBOX_COLOR_LIGHTER);    SetPenColor (hdc,            RGBA2Pixel (hdc, GetRValue (color), GetGValue (color),                 GetBValue (color), GetAValue (color)));    MoveTo (hdc, l + 1, t);    LineTo (hdc, l + 1, b);    MoveTo (hdc, r, t);    LineTo (hdc, r, b);}

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