自学教程：C++ ClientToScreen函数代码示例

void CAnimationEditorDlg::OnMouseMove(UINT nFlags, CPoint point) {	//While the mouse is moving, this routine is called.	//This routine will redraw the drag image at the present	// mouse location to display the dragging.	//Also, while over a CListCtrl, this routine will highlight	// the item we are hovering over.	//// If we are in a drag/drop procedure (m_bDragging is true)	if (m_bDragging)	{		//// Move the drag image		CPoint pt(point);	//get our current mouse coordinates		ClientToScreen(&pt); //convert to screen coordinates		m_pDragImage->DragMove(pt); //move the drag image to those coordinates		// Unlock window updates (this allows the dragging image to be shown smoothly)		m_pDragImage->DragShowNolock(false);		//// Get the CWnd pointer of the window that is under the mouse cursor		CWnd* pDropWnd = WindowFromPoint (pt);		ASSERT(pDropWnd); //make sure we have a window		//// If we drag outside current window we need to adjust the highlights displayed		if (pDropWnd != m_pDropWnd)		{			if (m_nDropIndex != -1) //If we drag over the CListCtrl header, turn off the hover highlight			{				TRACE("m_nDropIndex is -1/n");				CListCtrl* pList = (CListCtrl*)m_pDropWnd;				VERIFY (pList->SetItemState (m_nDropIndex, 0, LVIS_DROPHILITED));				// redraw item				VERIFY (pList->RedrawItems (m_nDropIndex, m_nDropIndex));				pList->UpdateWindow ();				m_nDropIndex = -1;			}			else //If we drag out of the CListCtrl altogether			{				TRACE("m_nDropIndex is not -1/n");				CListCtrl* pList = (CListCtrl*)m_pDropWnd;				int i = 0;				int nCount = pList->GetItemCount();				for(i = 0; i < nCount; i++)				{					pList->SetItemState(i, 0, LVIS_DROPHILITED);				}				pList->RedrawItems(0, nCount);				pList->UpdateWindow();			}		}		// Save current window pointer as the CListCtrl we are dropping onto		m_pDropWnd = pDropWnd;		// Convert from screen coordinates to drop target client coordinates		pDropWnd->ScreenToClient(&pt);		//If we are hovering over a CListCtrl we need to adjust the highlights		if(pDropWnd->IsKindOf(RUNTIME_CLASS (CListCtrl)))		{						//Note that we can drop here			SetCursor(LoadCursor(NULL, IDC_ARROW));			UINT uFlags;			CListCtrl* pList = (CListCtrl*)pDropWnd;			// Turn off hilight for previous drop target			pList->SetItemState (m_nDropIndex, 0, LVIS_DROPHILITED);			// Redraw previous item			pList->RedrawItems (m_nDropIndex, m_nDropIndex);						// Get the item that is below cursor			m_nDropIndex = ((CListCtrl*)pDropWnd)->HitTest(pt, &uFlags);			// Highlight it			if(m_nDropIndex >= 0)				pList->SetItemState(m_nDropIndex, LVIS_DROPHILITED, LVIS_DROPHILITED);			// Redraw item			pList->RedrawItems(m_nDropIndex, m_nDropIndex);			pList->UpdateWindow();		}		else		{			//If we are not hovering over a CListCtrl, change the cursor			// to note that we cannot drop here			SetCursor(LoadCursor(NULL, IDC_NO));		}		// Lock window updates		m_pDragImage->DragShowNolock(true);	}			CDialog::OnMouseMove(nFlags, point);}

/***** * Internal functions to help with IME window management */static void PaintDefaultIMEWnd(HIMC hIMC, HWND hwnd){    PAINTSTRUCT ps;    RECT rect;    HDC hdc;    LPCOMPOSITIONSTRING compstr;    LPBYTE compdata = NULL;    HMONITOR monitor;    MONITORINFO mon_info;    INT offX=0, offY=0;    LPINPUTCONTEXT lpIMC;    lpIMC = LockRealIMC(hIMC);    if (lpIMC == NULL)        return;    hdc = BeginPaint(hwnd,&ps);    GetClientRect(hwnd,&rect);    FillRect(hdc, &rect, (HBRUSH)(COLOR_WINDOW + 1));    compdata = ImmLockIMCC(lpIMC->hCompStr);    compstr = (LPCOMPOSITIONSTRING)compdata;    if (compstr->dwCompStrLen && compstr->dwCompStrOffset)    {        SIZE size;        POINT pt;        HFONT oldfont = NULL;        LPWSTR CompString;        LPIMEPRIVATE myPrivate;        CompString = (LPWSTR)(compdata + compstr->dwCompStrOffset);        myPrivate = ImmLockIMCC(lpIMC->hPrivate);        if (myPrivate->textfont)            oldfont = SelectObject(hdc,myPrivate->textfont);        ImmUnlockIMCC(lpIMC->hPrivate);        GetTextExtentPoint32W(hdc, CompString, compstr->dwCompStrLen, &size);        pt.x = size.cx;        pt.y = size.cy;        LPtoDP(hdc,&pt,1);        /*         * How this works based on tests on windows:         * CFS_POINT: then we start our window at the point and grow it as large         *    as it needs to be for the string.         * CFS_RECT:  we still use the ptCurrentPos as a starting point and our         *    window is only as large as we need for the string, but we do not         *    grow such that our window exceeds the given rect.  Wrapping if         *    needed and possible.   If our ptCurrentPos is outside of our rect         *    then no window is displayed.         * CFS_FORCE_POSITION: appears to behave just like CFS_POINT         *    maybe because the default MSIME does not do any IME adjusting.         */        if (lpIMC->cfCompForm.dwStyle != CFS_DEFAULT)        {            POINT cpt = lpIMC->cfCompForm.ptCurrentPos;            ClientToScreen(lpIMC->hWnd,&cpt);            rect.left = cpt.x;            rect.top = cpt.y;            rect.right = rect.left + pt.x;            rect.bottom = rect.top + pt.y;            monitor = MonitorFromPoint(cpt, MONITOR_DEFAULTTOPRIMARY);        }        else /* CFS_DEFAULT */        {            /* Windows places the default IME window in the bottom left */            HWND target = lpIMC->hWnd;            if (!target) target = GetFocus();            GetWindowRect(target,&rect);            rect.top = rect.bottom;            rect.right = rect.left + pt.x + 20;            rect.bottom = rect.top + pt.y + 20;            offX=offY=10;            monitor = MonitorFromWindow(target, MONITOR_DEFAULTTOPRIMARY);        }        if (lpIMC->cfCompForm.dwStyle == CFS_RECT)        {            RECT client;            client =lpIMC->cfCompForm.rcArea;            MapWindowPoints( lpIMC->hWnd, 0, (POINT *)&client, 2 );            IntersectRect(&rect,&rect,&client);            /* TODO:  Wrap the input if needed */        }        if (lpIMC->cfCompForm.dwStyle == CFS_DEFAULT)        {            /* make sure we are on the desktop */            mon_info.cbSize = sizeof(mon_info);            GetMonitorInfoW(monitor, &mon_info);            if (rect.bottom > mon_info.rcWork.bottom)//.........这里部分代码省略.........

//.........这里部分代码省略.........					}					// increase width if info text requires more					if ((pMsgBox->uType&MB_INFOBAR) && pMsgBox->ptszInfoText && *pMsgBox->ptszInfoText) {						int multiline = 0;						RECT rcico; GetClientRect(GetDlgItem(hDlg, ICO_DLGLOGO), &rcico);						rcico.right = rcico.right * 100 / 66; // padding						for (rs = h = pMsgBox->ptszInfoText;; ++h) {							if (*h == '/n' || !*h) {								GetTextExtentPoint32(hDC, rs, h - rs, &ts);								ts.cx += rcico.right;								if (ts.cx > txtWidth)									txtWidth = ts.cx;								if (!*h)									break;								rs = h + 1;								++multiline;							}						}						if (!multiline)							SetWindowLongPtr(GetDlgItem(hDlg, TXT_NAME), GWL_STYLE, GetWindowLongPtr(GetDlgItem(hDlg, TXT_NAME), GWL_STYLE) | SS_CENTERIMAGE);					}					ReleaseDC(hDlg, hDC);					// calc new dialog size					GetWindowRect(hDlg, &rcDlg);					GetWindowRect(GetDlgItem(hDlg, TXT_MESSAGE), &ws);					needX = txtWidth - (ws.right - ws.left) - icoWidth;					needY = max(0, txtHeight - (ws.bottom - ws.top) + 5);					rcDlg.left -= needX / 2; rcDlg.right += needX / 2;					rcDlg.top -= (needY - InfoBarHeight) / 2; rcDlg.bottom += (needY - InfoBarHeight) / 2;					// resize dialog window					MoveWindow(hDlg, rcDlg.left, rcDlg.top, rcDlg.right - rcDlg.left, rcDlg.bottom - rcDlg.top, FALSE);					ClientToScreen(hDlg, &mpt);					MoveCtrl(hDlg, STATIC_WHITERECT, -mpt.x, -mpt.y, needX, needY - InfoBarHeight);					MoveCtrl(hDlg, TXT_NAME, -mpt.x, -mpt.y, needX, 0);					MoveCtrl(hDlg, ICO_DLGLOGO, -mpt.x + needX, -mpt.y, 0, 0);					MoveCtrl(hDlg, ICO_MSGDLG, -mpt.x, -mpt.y - InfoBarHeight, 0, 0);					MoveCtrl(hDlg, TXT_MESSAGE, -mpt.x - icoWidth, -mpt.y - InfoBarHeight, needX, needY);					MoveCtrl(hDlg, STATIC_LINE2, -mpt.x, -mpt.y + needY - InfoBarHeight, needX, 0);					//					// Do pushbutton positioning					//					RECT rcOk, rcAll, rcNone, rcCancel;					// get button rectangles					GetWindowRect(GetDlgItem(hDlg, IDOK), &rcOk);					OffsetRect(&rcOk, -mpt.x, -mpt.y + needY - InfoBarHeight);					GetWindowRect(GetDlgItem(hDlg, IDALL), &rcAll);					OffsetRect(&rcAll, -mpt.x, -mpt.y + needY - InfoBarHeight);					GetWindowRect(GetDlgItem(hDlg, IDNONE), &rcNone);					OffsetRect(&rcNone, -mpt.x, -mpt.y + needY - InfoBarHeight);					GetWindowRect(GetDlgItem(hDlg, IDCANCEL), &rcCancel);					OffsetRect(&rcCancel, -mpt.x, -mpt.y + needY - InfoBarHeight);					LONG okWidth = rcOk.right - rcOk.left;					LONG allWidth = rcAll.right - rcAll.left;					LONG noneWidth = rcNone.right - rcNone.left;					LONG caWidth = rcCancel.right - rcCancel.left;					LONG dlgMid = (rcDlg.right - rcDlg.left) / 2;

INT_PTR CALLBACK OptionsProc(HWND hdlg,UINT msg,WPARAM wparam,LPARAM lparam){		switch(msg){	case WM_INITDIALOG:{		DWORD style;		g_opHdlg=hdlg;		bOptionsInit=TRUE;		TranslateDialogDefault(hdlg); 		if(g_iButtonsCount!=db_get_b(NULL, PLGNAME,"ButtonsCount", 0))		{			LOGFONT logFont;			HFONT hFont;			bNeedRestart=TRUE;			EnableWindow(GetDlgItem(hdlg,IDC_BUTTONSLIST),FALSE);			EnableWindow(GetDlgItem(hdlg,IDC_BLISTADD),FALSE);			EnableWindow(GetDlgItem(hdlg,IDC_BLISTREMOVE),FALSE);			EnableWindow(GetDlgItem(hdlg,IDC_MENUTREE),FALSE);			EnableWindow(GetDlgItem(hdlg,IDC_MTREEADD),FALSE);			EnableWindow(GetDlgItem(hdlg,IDC_MTREEREMOVE),FALSE);			EnableWindow(GetDlgItem(hdlg,IDC_MENUVALUE),FALSE);			EnableWindow(GetDlgItem(hdlg,IDC_RCLICKVALUE),FALSE);			EnableWindow(GetDlgItem(hdlg,IDC_BUTTONNAME),FALSE);			EnableWindow(GetDlgItem(hdlg,IDC_INQMENU),FALSE);			EnableWindow(GetDlgItem(hdlg,IDC_ISSERVNAME),FALSE);			EnableWindow(GetDlgItem(hdlg,IDC_MENUNAME),FALSE);				ShowWindow(GetDlgItem(hdlg,IDC_WARNING),SW_SHOW);			hFont = (HFONT)SendDlgItemMessage(hdlg, IDC_WARNING, WM_GETFONT, 0, 0);			GetObject(hFont, sizeof(logFont), &logFont);			logFont.lfWeight = FW_BOLD;			hFont = CreateFontIndirect(&logFont);			SendDlgItemMessage(hdlg, IDC_WARNING, WM_SETFONT, (WPARAM)hFont, 0);			break;		}		g_iOPButtonsCount=g_iButtonsCount;		hButtonsList=GetDlgItem(hdlg,IDC_BUTTONSLIST);		hMenuTree=GetDlgItem(hdlg,IDC_MENUTREE);		style = GetWindowLongPtr(hButtonsList,GWL_STYLE);		style |=TVS_NOHSCROLL;		SetWindowLongPtr(hButtonsList,GWL_STYLE, style);		style = GetWindowLongPtr(hMenuTree,GWL_STYLE);		style |=TVS_NOHSCROLL;					SetWindowLongPtr(hMenuTree,GWL_STYLE, style);		BuildButtonsList(hButtonsList);		if (!TreeView_GetCount(hButtonsList))			EnableWindow(GetDlgItem(hdlg,IDC_RCLICKVALUE),FALSE);		mir_subclassWindow( GetDlgItem(hdlg,IDC_BUTTONNAME), EditSubclassProc);		mir_subclassWindow( GetDlgItem(hdlg,IDC_MENUNAME),   EditSubclassProc);		EnableWindow(GetDlgItem(hdlg,IDC_MENUVALUE),FALSE);		EnableWindow(GetDlgItem(hdlg,IDC_INQMENU),FALSE);		EnableWindow(GetDlgItem(hdlg,IDC_ISSERVNAME),FALSE);		CheckDlgButton(hdlg,IDC_RAUTOSEND,(g_bRClickAuto=db_get_b(NULL,PLGNAME,"RClickAuto",0)) ? BST_CHECKED : BST_UNCHECKED);		CheckDlgButton(hdlg,IDC_LAUTOSEND,(g_bLClickAuto=db_get_b(NULL,PLGNAME,"LClickAuto",0)) ? BST_CHECKED : BST_UNCHECKED);		CheckDlgButton(hdlg,IDC_ENABLEQUICKMENU,(g_bQuickMenu=db_get_b(NULL, PLGNAME,"QuickMenu", 1)) ? BST_CHECKED : BST_UNCHECKED);		bOptionsInit=FALSE;							 }break;	case WM_LBUTTONUP:		if(drag) {			TVHITTESTINFO hti; 			HTREEITEM htiAfter=NULL;			ButtonData* bd=NULL;			TVITEM tvi;			RECT rc;			BYTE height;			BOOLEAN bAsChild = FALSE;			TreeView_SetInsertMark(hMenuTree, NULL, 0 );			ReleaseCapture();			SetCursor( LoadCursor( NULL, IDC_ARROW ));			hti.pt.x = ( SHORT )LOWORD( lparam );			hti.pt.y = ( SHORT )HIWORD( lparam );			ClientToScreen(hdlg,&hti.pt);			ScreenToClient(hMenuTree,&hti.pt);			TreeView_HitTest( hMenuTree, &hti );			if(TreeView_GetParent(hMenuTree,hti.hItem)&&TreeView_GetChild(hMenuTree,hDragItem))				break;			if(TreeView_GetChild(hMenuTree,hti.hItem)&&TreeView_GetChild(hMenuTree,hDragItem))				break;			if ( hti.flags & TVHT_ABOVE ) {				htiAfter = TVI_FIRST;			}			else				if ( hti.flags & ( TVHT_NOWHERE|TVHT_BELOW )) {					htiAfter = TVI_LAST;				}				else//.........这里部分代码省略.........

//.........这里部分代码省略.........		break;	case WM_RBUTTONDOWN:	case WM_LBUTTONDOWN:		{			POINT pt;			GetCursorPos(&pt);			m_iDay = (WORD)SelectDay(hDlg, &pt);			if (m_iDay == 0) {				return TRUE;			}			PaintCalc(hDlg);			if (uMsg == WM_RBUTTONDOWN) {				CString menu1, menu2, menu3, menu4;				if (fMealMap[m_iDay-1] == M000)				{					menu1.Format(_T("+
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