自学教程：C++ GET_WM_COMMAND_ID函数代码示例

	/*static*/	INT_PTR CALLBACK Win32PopupDialog::Callback(HWND dialog, UINT message, WPARAM wParam, LPARAM lParam)	{		switch (message)		{			case WM_INITDIALOG:			{				Win32PopupDialog* popupDialog = popups[GetCurrentThreadId()];				HWND parentWindow = (popupDialog == NULL ? NULL : popupDialog->windowHandle);				if (parentWindow == NULL)				{					parentWindow = GetDesktopWindow();				}				RECT parentRect, dialogRect;				GetWindowRect(parentWindow, &parentRect);				GetWindowRect(dialog, &dialogRect);				int x = parentRect.left + (parentRect.right - parentRect.left) / 2;				int y = parentRect.top + (parentRect.bottom - parentRect.top) / 2;				x -= (dialogRect.right - dialogRect.left) / 2;				y -= (dialogRect.bottom - dialogRect.top) / 2;								SetWindowPos(dialog, HWND_TOP, x, y, 0, 0, SWP_NOSIZE);				if (popupDialog->showInputText)				{					if (GetDlgCtrlID((HWND) wParam) != ID_INPUT_FIELD)					{						HWND inputText = GetDlgItem(dialog, ID_INPUT_FIELD);						SetFocus(inputText);						SendMessage(inputText, EM_SETSEL,							0, popupDialog->inputText.length());						return FALSE;					}				}								return TRUE;			}			case WM_COMMAND:				if(GET_WM_COMMAND_ID(wParam, lParam) == IDOK)				{					Win32PopupDialog::HandleOKClick(dialog);					EndDialog(dialog, 0);				}				else if(GET_WM_COMMAND_ID(wParam, lParam) == IDCANCEL)				{					EndDialog(dialog, 0);				}				break;		}		return FALSE;	}

	/*static*/	INT_PTR CALLBACK Win32PopupDialog::Callback(HWND hDlg, UINT iMsg, WPARAM wParam, LPARAM lParam)	{		switch (iMsg)		{			case WM_INITDIALOG:			{				Win32PopupDialog* popupDialog = popups[GetCurrentThreadId()];				HWND hwndOwner = (popupDialog == NULL ? NULL : popupDialog->windowHandle);				if (hwndOwner == NULL)				{					hwndOwner = GetDesktopWindow();				}				RECT rcOwner;				RECT rcDlg;				RECT rc;				GetWindowRect(hwndOwner, &rcOwner);				GetWindowRect(hDlg, &rcDlg);				CopyRect(&rc, &rcOwner);				// Offset the owner and dialog box rectangles so that right and bottom				// values represent the width and height, and then offset the owner again				// to discard space taken up by the dialog box.				OffsetRect(&rcDlg, -rcDlg.left, -rcDlg.top);				OffsetRect(&rc, -rc.left, -rc.top);				OffsetRect(&rc, -rcDlg.right, -rcDlg.bottom);				SetWindowPos(hDlg,							HWND_TOP,							rcOwner.left + (rc.right / 2),							rcOwner.top + (rc.bottom / 2),							0, 0,							// Ignores size arguments.							SWP_NOSIZE);				return TRUE;			}			case WM_COMMAND:				if(GET_WM_COMMAND_ID(wParam, lParam) == IDOK)				{					Win32PopupDialog::HandleOKClick(hDlg);					EndDialog(hDlg, 0);				}				else if(GET_WM_COMMAND_ID(wParam, lParam) == IDCANCEL)				{					EndDialog(hDlg, 0);				}				break;		}		return FALSE;	}

//---------------------------------------------------------------------------// About//// About dialog proc//// RETURNS:     Per Windows convention...//---------------------------------------------------------------------------BOOL  APIENTRY About (HWND hDlg, WORD message, WPARAM wParam, LPARAM lParam){    switch (message)        {        case WM_COMMAND:            if ((GET_WM_COMMAND_ID (wParam, lParam) == IDOK) ||                (GET_WM_COMMAND_ID (wParam, lParam) == IDCANCEL))                {                EndDialog(hDlg, TRUE);                return (TRUE);                }            break;    }    return (FALSE);    (lParam);}

/***************************** Public  Function ****************************/** BOOL  APIENTRY AboutDlg(hDlg, message, wParam, lParam)* HWND     hDlg;* WORD message;* WPARAM wParam;* LONG     lParam;*** Effects: none.*/***************************************************************************/BOOL  APIENTRY AboutDlg(	HWND   hDlg,	WORD   message,	WPARAM wParam,	LONG   lParam	){	UNREFERENCED_PARAMETER(lParam);	switch (message) {	case WM_INITDIALOG:		break;	case WM_COMMAND:		EndDialog(hDlg, GET_WM_COMMAND_ID(wParam, lParam));		/* idok or idcancel */		break;	default:		return FALSE;		break;	}	return(TRUE);}

static BOOL CALLBACK DialPassCallBackProc(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam){	static RASDIALPARAMS *Param;	char Tmp[RAS_NAME_LEN+25];	switch (message)	{		case WM_INITDIALOG :			Param = (RASDIALPARAMS *)lParam;			sprintf(Tmp, MSGJPN238, Param->szEntryName);			SendMessage(hDlg, WM_SETTEXT, 0, (LPARAM)Tmp);			SendDlgItemMessage(hDlg, RASPASS_USER, EM_LIMITTEXT, UNLEN, 0);			SendDlgItemMessage(hDlg, RASPASS_PASS, EM_LIMITTEXT, PWLEN, 0);			SendDlgItemMessage(hDlg, RASPASS_USER, WM_SETTEXT, 0, (LPARAM)Param->szUserName);			SendDlgItemMessage(hDlg, RASPASS_PASS, WM_SETTEXT, 0, (LPARAM)Param->szPassword);		    return(TRUE);		case WM_COMMAND :			switch(GET_WM_COMMAND_ID(wParam, lParam))			{				case IDOK :					SendDlgItemMessage(hDlg, RASPASS_USER, WM_GETTEXT, UNLEN+1, (LPARAM)Param->szUserName);					SendDlgItemMessage(hDlg, RASPASS_PASS, WM_GETTEXT, PWLEN+1, (LPARAM)Param->szPassword);					EndDialog(hDlg, YES);					break;				case IDCANCEL :					EndDialog(hDlg, NO);					break;			}			return(TRUE);	}	return(FALSE);}

BOOL CALLBACK ChessPromotionDialogProc(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam){   UserDidSomething();   switch (message)   {   case WM_INITDIALOG:      CheckDlgButton(hDlg, IDC_QUEEN, TRUE);      CenterWindow(hDlg, GetParent(hDlg));      hPromoteDlg = hDlg;      return TRUE;         case WM_COMMAND:      switch (GET_WM_COMMAND_ID(wParam, lParam))      {      case IDOK:      case IDCANCEL:	 if (IsDlgButtonChecked(hDlg, IDC_KNIGHT))	    EndDialog(hDlg, KNIGHT);	 else if (IsDlgButtonChecked(hDlg, IDC_BISHOP))	    EndDialog(hDlg, BISHOP);	 else if (IsDlgButtonChecked(hDlg, IDC_ROOK))	    EndDialog(hDlg, ROOK);	 else EndDialog(hDlg, QUEEN);	 return TRUE;      }      break;   case WM_DESTROY:      hPromoteDlg = NULL;      break;   }   return FALSE;}

long windows_systemcommand_routine ( HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam ){	LRESULT		lRc;	switch ( GET_WM_COMMAND_ID ( wParam, lParam ) )	{		case SC_SCREENSAVE:		{			return ( 0 );			break;		}		default:		{			lRc = DefWindowProc ( application_window, message, wParam, lParam );			break;		}	}	return ( lRc );}

LRESULT DispCommand(LPCMDI lpcmdi,                     HWND   hwnd,                     WPARAM wparam,                     LPARAM lparam){    WORD    wCommand = GET_WM_COMMAND_ID(wparam, lparam);    int     icmd = 0;    CMD    *rgcmd = lpcmdi->rgcmd;    int     ccmd  = lpcmdi->ccmd;    // Message packing of wparam and lparam have changed for Win32,    // so use the GET_WM_COMMAND macro to unpack the commnad    for (icmd = 0; icmd < ccmd; icmd++)    {        if (rgcmd[icmd].wCommand == wCommand)        {            return rgcmd[icmd].pfncmd(hwnd,                                      wCommand,                                      GET_WM_COMMAND_CMD(wparam, lparam),                                      GET_WM_COMMAND_HWND(wparam, lparam));        }    }    return DispDefault(lpcmdi->edwp, hwnd, WM_COMMAND, wparam, lparam);}

LRESULT CALLBACK CTSFMainWnd::_WndProc( HWND hWnd,                                         UINT uMessage,                                         WPARAM wParam,                                         LPARAM lParam){    CTSFMainWnd *pThis = (CTSFMainWnd*)GetWindowLongPtr(hWnd, THIS_POINTER_OFFSET);    if((NULL == pThis) && (uMessage != WM_NCCREATE))    {        return DefWindowProc(hWnd, uMessage, wParam, lParam);    }        switch (uMessage)    {    case WM_NCCREATE:        {            LPCREATESTRUCT lpcs = (LPCREATESTRUCT)lParam;            pThis = (CTSFMainWnd*)(lpcs->lpCreateParams);            SetWindowLongPtr(hWnd, THIS_POINTER_OFFSET, (LONG_PTR)pThis);            //set the window handle            pThis->m_hWnd = hWnd;        }        break;    case WM_CREATE:        return pThis->_OnCreate();    case WM_SIZE:        return pThis->_OnSize(LOWORD(lParam), HIWORD(lParam));    case WM_DESTROY:        return pThis->_OnDestroy();    case WM_SETFOCUS:        return pThis->_OnSetFocus();    case WM_KILLFOCUS:        return pThis->_OnKillFocus();    case WM_ACTIVATE:        return pThis->_OnActivate(wParam);    case WM_INITMENUPOPUP:        return pThis->_OnInitMenuPopup(wParam, lParam);    case WM_COMMAND:        return pThis->_OnCommand(   GET_WM_COMMAND_ID(wParam, lParam),                                     GET_WM_COMMAND_CMD(wParam, lParam),                                     GET_WM_COMMAND_HWND(wParam, lParam));    case WM_NCDESTROY:        pThis->m_hWnd = NULL;        break;    }    return DefWindowProc(hWnd, uMessage, wParam, lParam);}

INT_PTR CALLBACK AboutDialogProc(HWND hDlg, UINT Msg, WPARAM wParam, LPARAM lParam){	switch (Msg)	{		case WM_INITDIALOG:		{			char tmp[256];			CenterWindow(hDlg);			hBrush = CreateSolidBrush(RGB(235, 233, 237));			HBITMAP hBmp = (HBITMAP)LoadImage(GetModuleHandle(NULL), MAKEINTRESOURCE(IDB_SPLASH), IMAGE_BITMAP, 0, 0, LR_SHARED);			SendMessage(GetDlgItem(hDlg, IDC_ABOUT), STM_SETIMAGE, IMAGE_BITMAP, (LPARAM)hBmp);			hFont = CreateFont(-11, 0, 0, 0, 400, 0, 0, 0, 0, 3, 2, 1, 34, TEXT("Verdana"));			hFontFX = CreateFont(-12, 0, 0, 0, 400, 0, 0, 0, 0, 3, 2, 1, 34, TEXT("Verdana"));			SetWindowFont(GetDlgItem(hDlg, IDC_TEXT1), hFont, true);			SetWindowFont(GetDlgItem(hDlg, IDC_TEXT2), hFont, true);			SetWindowFont(GetDlgItem(hDlg, IDC_TEXT3), hFont, true);			SetWindowFont(GetDlgItem(hDlg, IDC_TEXT4), hFont, true);			SetWindowFont(GetDlgItem(hDlg, IDC_SICKFX), hFontFX, true);			win_set_window_text_utf8(GetDlgItem(hDlg, IDC_BUILD), "Build time: " __DATE__" - " __TIME__"");			snprintf(tmp, WINUI_ARRAY_LENGTH(tmp), "Version: %s", MAME_VERSION);			win_set_window_text_utf8(GetDlgItem(hDlg, IDC_BUILDVER), tmp);			return true;		}		case WM_CTLCOLORDLG:			return (LRESULT) hBrush;		case WM_CTLCOLORSTATIC:		case WM_CTLCOLORBTN:			hDC = (HDC)wParam;			SetBkMode(hDC, TRANSPARENT);			SetTextColor(hDC, GetSysColor(COLOR_WINDOWTEXT));			if ((HWND)lParam == GetDlgItem(hDlg, IDC_SICKFX))				SetTextColor(hDC, RGB(63, 72, 204));			return (LRESULT) hBrush;		case WM_COMMAND:			switch (GET_WM_COMMAND_ID(wParam, lParam))			{				case IDOK:				case IDCANCEL:					DeleteObject(hFont);					DeleteObject(hFontFX);					DeleteObject(hBrush);					EndDialog(hDlg, 0);					return true;			}			break;	}	return false;}

static BOOL CALLBACK DialCallBackProc(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam){	static RASDIALPARAMS *Param;	static HRASCONN hRasConn;	char Tmp[RAS_NAME_LEN+25];	DWORD Sts;	switch (message)	{		case WM_INITDIALOG :			Param = (RASDIALPARAMS *)lParam;			hWndDial = hDlg;			hRasConn = NULL;			sprintf(Tmp, MSGJPN223, Param->szEntryName);			SendMessage(hDlg, WM_SETTEXT, 0, (LPARAM)Tmp);			Sts = (*m_RasDial)(NULL, NULL, Param, 0, &RasDialFunc, &hRasConn);			if(Sts != 0)		        EndDialog(hDlg, NO);		    return(TRUE);		case WM_COMMAND :			switch(GET_WM_COMMAND_ID(wParam, lParam))			{				case IDCANCEL :					RasHangUpWait(hRasConn);					EndDialog(hDlg, NO);					break;			}			return(TRUE);		case WM_DIAL_MSG :			if(lParam != 0)			{				/* エラ
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