自学教程：C++ GetClassLong函数代码示例

HICON get_window_icon_big(HWND hwnd, bool allow_from_class){	HICON hIcon = 0;	SendMessageTimeout(hwnd, WM_GETICON, ICON_BIG, 0, SMTO_ABORTIFHUNG, 1000, (LPDWORD)&hIcon);	if (!hIcon)		SendMessageTimeout(hwnd, WM_GETICON, ICON_SMALL2, 0, SMTO_ABORTIFHUNG, 1000, (LPDWORD)&hIcon);	if (!hIcon)		SendMessageTimeout(hwnd, WM_GETICON, ICON_SMALL, 0, SMTO_ABORTIFHUNG, 1000, (LPDWORD)&hIcon);	if (allow_from_class) {		if (!hIcon)			hIcon = (HICON)GetClassLong(hwnd, GCL_HICON);		if (!hIcon)			hIcon = (HICON)GetClassLong(hwnd, GCL_HICONSM);	}	if (!hIcon)		SendMessageTimeout(hwnd, WM_QUERYDRAGICON, 0, 0, 0, 1000, (LPDWORD)&hIcon);	return hIcon;}

void CSizingControlBar::OnNcPaint(){    // get window DC that is clipped to the non-client area    CWindowDC dc(this);    CRect rcClient, rcBar;    GetClientRect(rcClient);    ClientToScreen(rcClient);    GetWindowRect(rcBar);    rcClient.OffsetRect(-rcBar.TopLeft());    rcBar.OffsetRect(-rcBar.TopLeft());    CDC mdc;    mdc.CreateCompatibleDC(&dc);        CBitmap bm;    bm.CreateCompatibleBitmap(&dc, rcBar.Width(), rcBar.Height());    CBitmap* pOldBm = mdc.SelectObject(&bm);    // draw borders in non-client area    CRect rcDraw = rcBar;    DrawBorders(&mdc, rcDraw);    // erase the NC background#ifdef _WIN64    mdc.FillRect(rcDraw, CBrush::FromHandle(        (HBRUSH) GetClassLong(m_hWnd, GCLP_HBRBACKGROUND)));#else    mdc.FillRect(rcDraw, CBrush::FromHandle(        (HBRUSH) GetClassLong(m_hWnd, GCL_HBRBACKGROUND)));#endif    if (m_dwSCBStyle & SCBS_SHOWEDGES)    {        CRect rcEdge; // paint the sizing edges        for (int i = 0; i < 4; i++)            if (GetEdgeRect(rcBar, GetEdgeHTCode(i), rcEdge))                mdc.Draw3dRect(rcEdge, ::GetSysColor(COLOR_BTNHIGHLIGHT),                    ::GetSysColor(COLOR_BTNSHADOW));    }    NcPaintGripper(&mdc, rcClient);    // client area is not our bussiness :)    dc.IntersectClipRect(rcBar);    dc.ExcludeClipRect(rcClient);    dc.BitBlt(0, 0, rcBar.Width(), rcBar.Height(), &mdc, 0, 0, SRCCOPY);    ReleaseDC(&dc);    mdc.SelectObject(pOldBm);    bm.DeleteObject();    mdc.DeleteDC();}

void CTaskSwitcher32Dlg::FilterList(){	m_windowList2.DeleteAllItems();	window_list *list = window_item::get_window_list();	CImageList *pImageList = new CImageList(); pImageList->Create( 16, 16, ILC_COLOR32 | ILC_MASK | ILC_PERITEMMIRROR, 0, 10);	m_windowList2.SetImageList( pImageList, LVSIL_SMALL);	int default_idx = pImageList->Add( m_hIcon );			for ( unsigned int i = 0; i < list->size(); i++ )	{		window_item *item = (*list)[i];		bool ok = true;		if ( this->search.length() > 0 )		{			int pos = item->get_lower_title().find( this->search ) ; 			int pos2 = item->get_process_name().find( this->search );			if ( pos == std::string::npos && pos2 == std::string::npos ) 				ok = false;		}		if ( ok )		{			HWND hwnd = item->get_handle();			HICON hIcon = NULL; 			SendMessageTimeout(hwnd, WM_GETICON, ICON_BIG, 0, SMTO_ABORTIFHUNG, 1000, (LPDWORD)&hIcon);			if (!hIcon) SendMessageTimeout(hwnd, WM_GETICON, ICON_SMALL2, 0, SMTO_ABORTIFHUNG, 1000, (LPDWORD)&hIcon); 			if (!hIcon) SendMessageTimeout(hwnd, WM_GETICON, ICON_SMALL, 0, SMTO_ABORTIFHUNG, 1000, (LPDWORD)&hIcon);            if (!hIcon) hIcon = (HICON)GetClassLong(hwnd, GCL_HICON);            if (!hIcon) hIcon = (HICON)GetClassLong(hwnd, GCL_HICONSM);        					int imageidx = -1;			if ( hIcon != NULL )			{				HICON iconCopy = CopyIcon( hIcon );								imageidx = pImageList->Add( iconCopy );				DestroyIcon( iconCopy );			}			else			{				imageidx = 1;			}			int idx = m_windowList2.InsertItem( 0, item->get_title().c_str(), imageidx );			m_windowList2.SetItem(  idx, 1, LVIF_TEXT | LVIF_IMAGE, item->get_process_name().c_str(), imageidx, 0, 0, 0 );			m_windowList2.SetItemData( idx, (DWORD_PTR) item );					}	}	m_windowList2.SetItemState( 0, LVIS_SELECTED, LVIS_SELECTED );	m_windowList2.SetSelectionMark( 0 );}

 /////////////////////////////////////////////////////////////////////// ///  Function: WindowClassProc /// ///    Author: $author$ ///      Date: 4/6/2012 /////////////////////////////////////////////////////////////////////// static LRESULT CALLBACK WindowClassProc (HWND hWnd,  UINT msg,  WPARAM wParam,  LPARAM lParam)  {     LRESULT lResult = 0;     XosWinWindow* target = 0;     WNDPROC windowSubclassProc = 0;     DWORD wndExtra;     DWORD wndIndex;     DWORD wndClassExtra;     DWORD wndClassIndex;          if (sizeof(XosWinWindow*) <= (wndExtra = GetClassLong(hWnd, GCL_CBWNDEXTRA)))     if (0 <= (wndIndex = wndExtra-sizeof(XosWinWindow*)))     if ((target = (XosWinWindow*)(GetWindowLongPtr(hWnd, wndIndex))))     {         lResult = target->OnWindowMessage(hWnd, msg, wParam, lParam);         return lResult;     }     else     if ((WM_NCCREATE == msg))     {         CREATESTRUCT* cs;         if ((cs = (CREATESTRUCT*)(lParam)))         if ((target = (XosWinWindow*)(cs->lpCreateParams)))         if (sizeof(windowSubclassProc) <= (wndClassExtra = GetClassLong(hWnd, GCL_CBCLSEXTRA)))         if (0 <= (wndClassIndex = wndClassExtra-sizeof(windowSubclassProc)))         if ((windowSubclassProc = (WNDPROC)(GetClassLongPtr(hWnd, wndClassIndex))))         {             SetWindowLongPtr(hWnd, wndIndex, (LONG_PTR)(target));             if (!(target->Attached())) target->Attach(hWnd);             lResult = target->OnWindowMessage(hWnd, msg, wParam, lParam);             return lResult;         }     }          if (sizeof(windowSubclassProc) <= (wndClassExtra = GetClassLong(hWnd, GCL_CBCLSEXTRA)))     if (0 <= (wndClassIndex = wndClassExtra-sizeof(windowSubclassProc)))         windowSubclassProc = (WNDPROC)(GetClassLongPtr(hWnd, wndClassIndex));          if (windowSubclassProc)         lResult = CallWindowProc         (windowSubclassProc, hWnd, msg, wParam, lParam);     else     lResult = DefWindowProc(hWnd, msg, wParam, lParam);     return lResult; }

/**************************************************************************...**************************************************************************/static void refresh_happiness_bitmap(HBITMAP bmp,				     struct city *pcity,				     enum citizen_feeling index){  enum citizen_category citizens[MAX_CITY_SIZE];  RECT rc;  int i;  int num_citizens = get_city_citizen_types(pcity, index, citizens);  int pix_width = HAPPINESS_PIX_WIDTH * tileset_small_sprite_width(tileset);  int offset = MIN(tileset_small_sprite_width(tileset), pix_width / num_citizens);  /* int true_pix_width = (num_citizens - 1) * offset + tileset_small_sprite_width(tileset); */  HDC hdc = CreateCompatibleDC(NULL);  HBITMAP old=SelectObject(hdc,bmp);  rc.left=0;  rc.top=0;  rc.right=pix_width;  rc.bottom=tileset_small_sprite_height(tileset);  FillRect(hdc,&rc,(HBRUSH)GetClassLong(root_window,GCL_HBRBACKGROUND));  for (i = 0; i < num_citizens; i++) {    draw_sprite(get_citizen_sprite(tileset, citizens[i], i, pcity),		hdc, i * offset, 0);  }  SelectObject(hdc,old);  DeleteDC(hdc);}

int CAnsiWnd::OnCreate(LPCREATESTRUCT lpCreateStruct) {	if (CWnd::OnCreate(lpCreateStruct) == -1)		return -1;	    SetClassLong(GetSafeHwnd(), GCL_STYLE, GetClassLong(GetSafeHwnd(), GCL_STYLE)-CS_VREDRAW);    while ( m_strList.GetCount () < pDoc->m_nScrollSize )         m_strList.AddTail("");    // Init colors     m_nCurrentBg = 0;    m_nCurrentFg =7;    //===================================================================================================================    ((CMainFrame*)AfxGetMainWnd())->m_editBar.GetDlgItem(IDC_EDIT)->SetFont(&pDoc->m_fntText);    CRect rect;    GetClientRect(&rect);    // To init screen dimentions in characters !!!        SetScrollSettings();    return 0;}

/* sys_directx_set_close_button_callback: *  Sets the close button callback function. */static int sys_directx_set_close_button_callback(void (*proc)(void)){    DWORD class_style;    HMENU sys_menu;    HWND allegro_wnd = win_get_window();    user_close_proc = proc;    /* get the old class style */    class_style = GetClassLong(allegro_wnd, GCL_STYLE);    /* and the system menu handle */    sys_menu = GetSystemMenu(allegro_wnd, FALSE);    /* enable or disable the no_close_button flag and the close menu option */    if (proc) {        class_style &= ~CS_NOCLOSE;        EnableMenuItem(sys_menu, SC_CLOSE, MF_BYCOMMAND | MF_ENABLED);    }    else {        class_style |= CS_NOCLOSE;        EnableMenuItem(sys_menu, SC_CLOSE, MF_BYCOMMAND | MF_GRAYED);    }    /* change the class to the new style */    SetClassLong(allegro_wnd, GCL_STYLE, class_style);    /* Redraw the whole window to display the changes of the button.     * (we use this because UpdateWindow() only works for the client area)     */    RedrawWindow(allegro_wnd, NULL, NULL, RDW_FRAME | RDW_INVALIDATE | RDW_UPDATENOW);    return 0;}

extern "C" __declspec(dllexport) LRESULT CALLBACK PoeWndProc(int nCode, WPARAM wParam, LPARAM lParam) {	PCWPSTRUCT msg = (PCWPSTRUCT)lParam;		if (origCursor == 0) {		origCursor = (HCURSOR)GetClassLong(msg->hwnd,GCL_HCURSOR);	}	if (nCode < 0) {		return CallNextHookEx(NULL,nCode,wParam,lParam);	}	if (msg->message == windowMessage) {		// time to do magic and stuff.		numPulses = 0;		currentCursor = 0;		SetClassLong(msg->hwnd, GCL_HCURSOR,(LONG)cursors[currentCursor]);		SetCursor(cursors[currentCursor]);		SetTimer(msg->hwnd,PULSE_TIMER,100,TimerProc);		return TRUE;	}	return CallNextHookEx(NULL,nCode,wParam,lParam);}

int CAnsiWnd::OnCreate(LPCREATESTRUCT lpCreateStruct) {	if (CWnd::OnCreate(lpCreateStruct) == -1)		return -1;	    SetClassLong(GetSafeHwnd(), GCL_STYLE, GetClassLong(GetSafeHwnd(), GCL_STYLE)-CS_VREDRAW);    while ( m_strList.GetCount () < nScrollSize )         m_strList.AddTail("");	m_TotalLinesReceived = 0;    // Init colors     m_nCurrentBg = 0;    m_nCurrentFg =7;    //===================================================================================================================    CRect rect;    GetClientRect(&rect);    // To init screen dimentions in characters !!!        SetScrollSettings();    return 0;}

BOOL CDetailCustomDlg::OnInitDialog() {	CPropertyPage::OnInitDialog();	DWORD style = GetClassLong(m_lstOptions, GCL_STYLE);	SetClassLong(m_lstOptions, GCL_STYLE, style & ~CS_DBLCLKS);		IcqContact *contact = ((CViewDetailDlg *) GetParent())->contact;	bitset<NR_CONTACT_FLAGS> &f = contact->flags;	for (int id = IDS_OPTION_FIRST; id <= IDS_OPTION_LAST; id++) {		CString str;		str.LoadString(id);		int i = m_lstOptions.AddString(str);		m_lstOptions.SetCheck(i, f.test(i));	}	CheckDlgButton(IDC_CUSTOM_SOUND, contact->flags.test(CF_CUSTOMSOUND));	enableGreeting();	OnCustomSound();	m_cmbSound.SetCurSel(curSel);	for (int i = 0; i < NR_CUSTOM_SOUNDS; i++)		soundFiles[i] = contact->soundFiles[i].c_str();	SetDlgItemText(IDC_FILE, soundFiles[curSel]);	SetDlgItemText(IDC_GREETING, contact->greeting.c_str());	return TRUE;  // return TRUE unless you set the focus to a control	              // EXCEPTION: OCX Property Pages should return FALSE}

    ///////////////////////////////////////////////////////////////////////    ///  Function: DialogWindow    ///    ///    Author: $author$    ///      Date: 1/29/2012    ///////////////////////////////////////////////////////////////////////    static XosWinDialogWindow* DialogWindow    (HWND hWnd,     UINT msg,     WPARAM wParam,     LPARAM lParam)     {        int wndExtra = GetClassLong(hWnd, GCL_CBWNDEXTRA);        if (wndExtra < XosWinDialogWindowClass::WindowExtra())            return 0;        int wndExtraOffset = XosWinDialogWindowClass::WindowExtraOffset();        XosWinDialogWindow* dialogWindow = (XosWinDialogWindow*)        (GetWindowLongPtr(hWnd, wndExtraOffset));        switch(msg)        {        case WM_INITDIALOG:            SetWindowLongPtr(hWnd, wndExtraOffset, lParam);            if ((dialogWindow = (XosWinDialogWindow*)(lParam)))                dialogWindow->Attach(hWnd);            break;        case WM_DESTROY:            SetWindowLongPtr(hWnd, wndExtraOffset, 0);            break;        }        return dialogWindow;    }

VOID ShowNotifyIcon(HWND hWnd, BOOL bAdd){	NOTIFYICONDATA nid;	ZeroMemory(&nid,sizeof(nid));	nid.cbSize=sizeof(NOTIFYICONDATA);	nid.hWnd=hWnd;	nid.uID=0;	nid.uFlags=NIF_ICON | NIF_MESSAGE | NIF_TIP;	nid.uCallbackMessage=WM_TRAYMESSAGE;	nid.hIcon = (HICON)GetClassLong(hWnd, GCL_HICONSM);	nid.uVersion = 0;	GetWindowText(hWnd, nid.szTip, sizeof(nid.szTip));	wcscat_s(nid.szTip, sizeof(nid.szTip), L"/nDouble-click to maximize");	if(bAdd)	{		for(int i = 0; i < 60; i++)		{			if(Shell_NotifyIcon(NIM_ADD, &nid))				break;			Sleep(1000);		}	}	else		Shell_NotifyIcon(NIM_DELETE, &nid);}

//---------------------------------------------------------------------------TColCombo::TColCombo(HANDLE Par,bool Tabstop,HFONT fnt){	VNumItems=0;for (int n=0;n<MAX_CC_ITEMS;n++)VItem[n]=NULL;  VVisible=0;VLeft=0;VTop=0;VWidth=100;VHeight=200;  VBoxGap=0;VBoxSurround=2;VBoxWidth=25;  VParent=Par;	for (VId=50000;VId<100000;VId++)if (GetDlgItem(VParent,VId)==NULL) break;  Font=fnt;if (Font==NULL)Font=(HFONT)SendMessage(VParent,WM_GETFONT,0,0); 	VHandle=CreateWindowEx(0,"COMBOBOX","",  		CBS_DROPDOWNLIST | CBS_HASSTRINGS	| CBS_OWNERDRAWFIXED |			WS_BORDER | (Tabstop==true ? WS_TABSTOP:0) | WS_CHILDWINDOW | WS_VSCROLL     	,VLeft,VTop,VWidth,VHeight,      VParent,(HANDLE) VId,(HANDLE) GetClassLong(VParent,GCL_HMODULE),0);  if (IsWindow(VHandle)==0){VHandle=NULL;return;}  SendMessage(VHandle,WM_SETFONT,(WPARAM)Font,0);	HANDLE tempdc=CreateCompatibleDC(0);  HANDLE oldfnt=SelectObject(tempdc,Font);  SIZE sz;GetTextExtentPoint32(tempdc,"HjTTLMjpq",strlen("HjTTLMjpq"),&sz);  SelectObject(tempdc,oldfnt);  DeleteDC(tempdc);  FontHeight=sz.cy;VItemHeight=FontHeight;VSelItemHeight=FontHeight+2;	SendMessage(VHandle,CB_SETITEMHEIGHT,-1,VSelItemHeight);	SendMessage(VHandle,CB_SETITEMHEIGHT,0,VItemHeight);}

/* ボタンコントロ
C++ GetClassName函数代码示例
C++ GetChunk函数代码示例