common.cpp

早期的WINDOWS编程,适合刚接触WINDOWS编程的初学者

#include "stdhdrs.h"
#include "common.h"

//Location of error codes in Win32
#ifdef WIN32
#ifndef _WINERROR_
#include <winerror.h>
#endif
#endif

//WhichWindowsXX is a method to determine which type of Windows (95, NT or 32s) is
//the application running on.
//The orginal version used info supplied by GetVersion to determine the type of 32bit
//Windows which was running. This was the only method available in Windows NT 3.1 and
//during the early Windows 95 beta.
//With the introduction of Windows NT 3.5 and Windows 95, GetWindowsEX supplies the
//information which we are looking for.
//If you need to support Windows NT 3.1 define ODG_NT31_SUPPORT so the version which
//uses GetVersion will be used, otherwise the GetVersionEx will be used.
//
enumWinVers	CAppType::WhichWindowsXX(void)
{
	enumWinVers	eWinVers = enumWinxx;

    OSVERSIONINFO   osVersionInfo;

//WARNING: You must set dwOSVersionInfoSize to the sizeof OSVERSIONINFO before
//calling GetVersionEx, otherwise you will be returned an error!
//
    osVersionInfo.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);

    if (GetVersionEx(&osVersionInfo) == TRUE){
       switch (osVersionInfo.dwPlatformId){
       case VER_PLATFORM_WIN32s:
            eWinVers = enumWin32s;
            break;
       case VER_PLATFORM_WIN32_WINDOWS:
            eWinVers = enumWin32c;
            break;
       case VER_PLATFORM_WIN32_NT:
            eWinVers = enumWin32;
            break;
       default:
            eWinVers = enumWinxx;
       }        
    }
    
    return eWinVers;			
}

//Centers a Window (or Dialog) on a Parent Window or desktop
//
BOOL CenterWindow (HWND hwndChild, HWND hwndParent)
{
        RECT    rChild, rParent;
        int     wChild, hChild, wParent, hParent;
        int     wScreen, hScreen, xNew, yNew;
        HDC     hdc;

        // Get the Height and Width of the child window
        GetWindowRect (hwndChild, &rChild);
        wChild = rChild.right - rChild.left;
        hChild = rChild.bottom - rChild.top;

        // Get the Height and Width of the parent window
        GetWindowRect (hwndParent, &rParent);
        wParent = rParent.right - rParent.left;
        hParent = rParent.bottom - rParent.top;

        // Get the display limits
        hdc = GetDC (hwndChild);
        wScreen = GetDeviceCaps (hdc, HORZRES);
        hScreen = GetDeviceCaps (hdc, VERTRES);
        ReleaseDC (hwndChild, hdc);

        // Calculate new X position, then adjust for screen
        xNew = rParent.left + ((wParent - wChild) /2);
        if (xNew < 0) {
                xNew = 0;
        } else if ((xNew+wChild) > wScreen) {
                xNew = wScreen - wChild;
        }

        // Calculate new Y position, then adjust for screen
        yNew = rParent.top  + ((hParent - hChild) /2);
        if (yNew < 0) {
                yNew = 0;
        } else if ((yNew+hChild) > hScreen) {
                yNew = hScreen - hChild;
        }

        // Set it, and return
        return SetWindowPos (hwndChild, NULL,
                xNew, yNew, 0, 0, SWP_NOSIZE | SWP_NOZORDER);
}


void HResultToString(HRESULT hResult, TCHAR *szErrorString)
{
  SCODE sc = GetScode(hResult);
  LPTSTR lpStr;
  TCHAR szBuffer[100];

  BOOL  bBufferUsed = FALSE;

#define CASE_SCODE(sc)\
  case sc: lpStr = (LPTSTR)#sc; break;

  switch (sc) {

	CASE_SCODE(S_OK)
	CASE_SCODE(S_FALSE)
	CASE_SCODE(E_UNEXPECTED)
	CASE_SCODE(E_NOTIMPL)
	CASE_SCODE(E_OUTOFMEMORY)
	CASE_SCODE(E_INVALIDARG)
	CASE_SCODE(E_NOINTERFACE)
	CASE_SCODE(E_POINTER)
	CASE_SCODE(E_HANDLE)
	CASE_SCODE(E_ABORT)
	CASE_SCODE(E_FAIL)
	CASE_SCODE(E_ACCESSDENIED)

	CASE_SCODE(OLE_E_OLEVERB)
	CASE_SCODE(OLE_E_ADVF)
	CASE_SCODE(OLE_E_ENUM_NOMORE)
	CASE_SCODE(OLE_E_ADVISENOTSUPPORTED)
	CASE_SCODE(OLE_E_NOCONNECTION)
	CASE_SCODE(OLE_E_NOTRUNNING)
	CASE_SCODE(OLE_E_NOCACHE)
	CASE_SCODE(OLE_E_BLANK)
	CASE_SCODE(OLE_E_CLASSDIFF)
	CASE_SCODE(OLE_E_CANT_GETMONIKER)
	CASE_SCODE(OLE_E_CANT_BINDTOSOURCE)
	CASE_SCODE(OLE_E_STATIC)
	CASE_SCODE(OLE_E_PROMPTSAVECANCELLED)
	CASE_SCODE(OLE_E_INVALIDRECT)
	CASE_SCODE(OLE_E_WRONGCOMPOBJ)
	CASE_SCODE(OLE_E_INVALIDHWND)
	CASE_SCODE(OLE_E_NOT_INPLACEACTIVE)
	CASE_SCODE(OLE_E_CANTCONVERT)
	CASE_SCODE(OLE_E_NOSTORAGE)

	CASE_SCODE(DV_E_FORMATETC)
	CASE_SCODE(DV_E_DVTARGETDEVICE)
	CASE_SCODE(DV_E_STGMEDIUM)
	CASE_SCODE(DV_E_STATDATA)
	CASE_SCODE(DV_E_LINDEX)
	CASE_SCODE(DV_E_TYMED)
	CASE_SCODE(DV_E_CLIPFORMAT)
	CASE_SCODE(DV_E_DVASPECT)
	CASE_SCODE(DV_E_DVTARGETDEVICE_SIZE)
	CASE_SCODE(DV_E_NOIVIEWOBJECT)

	CASE_SCODE(OLE_S_USEREG)
	CASE_SCODE(OLE_S_STATIC)
	CASE_SCODE(OLE_S_MAC_CLIPFORMAT)

	CASE_SCODE(CONVERT10_E_OLESTREAM_GET)
	CASE_SCODE(CONVERT10_E_OLESTREAM_PUT)
	CASE_SCODE(CONVERT10_E_OLESTREAM_FMT)
	CASE_SCODE(CONVERT10_E_OLESTREAM_BITMAP_TO_DIB)
	CASE_SCODE(CONVERT10_E_STG_FMT)
	CASE_SCODE(CONVERT10_E_STG_NO_STD_STREAM)
	CASE_SCODE(CONVERT10_E_STG_DIB_TO_BITMAP)
	CASE_SCODE(CONVERT10_S_NO_PRESENTATION)

	CASE_SCODE(CLIPBRD_E_CANT_OPEN)
	CASE_SCODE(CLIPBRD_E_CANT_EMPTY)
	CASE_SCODE(CLIPBRD_E_CANT_SET)
	CASE_SCODE(CLIPBRD_E_BAD_DATA)
	CASE_SCODE(CLIPBRD_E_CANT_CLOSE)

	CASE_SCODE(DRAGDROP_E_NOTREGISTERED)
	CASE_SCODE(DRAGDROP_E_ALREADYREGISTERED)
	CASE_SCODE(DRAGDROP_E_INVALIDHWND)
	CASE_SCODE(DRAGDROP_S_DROP)
	CASE_SCODE(DRAGDROP_S_CANCEL)
	CASE_SCODE(DRAGDROP_S_USEDEFAULTCURSORS)

	CASE_SCODE(OLEOBJ_E_NOVERBS)
	CASE_SCODE(OLEOBJ_E_INVALIDVERB)
	CASE_SCODE(OLEOBJ_S_INVALIDVERB)
	CASE_SCODE(OLEOBJ_S_CANNOT_DOVERB_NOW)
	CASE_SCODE(OLEOBJ_S_INVALIDHWND)
	CASE_SCODE(INPLACE_E_NOTUNDOABLE)
	CASE_SCODE(INPLACE_E_NOTOOLSPACE)
	CASE_SCODE(INPLACE_S_TRUNCATED)

	CASE_SCODE(CO_E_NOTINITIALIZED)
	CASE_SCODE(CO_E_ALREADYINITIALIZED)
	CASE_SCODE(CO_E_CANTDETERMINECLASS)
	CASE_SCODE(CO_E_CLASSSTRING)
	CASE_SCODE(CO_E_IIDSTRING)
	CASE_SCODE(CO_E_APPNOTFOUND)
	CASE_SCODE(CO_E_APPSINGLEUSE)
	CASE_SCODE(CO_E_ERRORINAPP)
	CASE_SCODE(CO_E_DLLNOTFOUND)
	CASE_SCODE(CO_E_ERRORINDLL)
	CASE_SCODE(CO_E_WRONGOSFORAPP)
	CASE_SCODE(CO_E_OBJNOTREG)
	CASE_SCODE(CO_E_OBJISREG)
	CASE_SCODE(CO_E_OBJNOTCONNECTED)
	CASE_SCODE(CO_E_APPDIDNTREG)

	CASE_SCODE(CLASS_E_NOAGGREGATION)
	CASE_SCODE(CLASS_E_CLASSNOTAVAILABLE)

	CASE_SCODE(REGDB_E_READREGDB)
	CASE_SCODE(REGDB_E_WRITEREGDB)
	CASE_SCODE(REGDB_E_KEYMISSING)
	CASE_SCODE(REGDB_E_INVALIDVALUE)
	CASE_SCODE(REGDB_E_CLASSNOTREG)
	CASE_SCODE(REGDB_E_IIDNOTREG)

	CASE_SCODE(RPC_E_CALL_REJECTED)
	CASE_SCODE(RPC_E_CALL_CANCELED)
	CASE_SCODE(RPC_E_CANTPOST_INSENDCALL)
	CASE_SCODE(RPC_E_CANTCALLOUT_INASYNCCALL)
	CASE_SCODE(RPC_E_CANTCALLOUT_INEXTERNALCALL)
	CASE_SCODE(RPC_E_CONNECTION_TERMINATED)
	CASE_SCODE(RPC_E_SERVER_DIED)
	CASE_SCODE(RPC_E_CLIENT_DIED)
	CASE_SCODE(RPC_E_INVALID_DATAPACKET)
	CASE_SCODE(RPC_E_CANTTRANSMIT_CALL)
	CASE_SCODE(RPC_E_CLIENT_CANTMARSHAL_DATA)
	CASE_SCODE(RPC_E_CLIENT_CANTUNMARSHAL_DATA)
	CASE_SCODE(RPC_E_SERVER_CANTMARSHAL_DATA)
	CASE_SCODE(RPC_E_SERVER_CANTUNMARSHAL_DATA)
	CASE_SCODE(RPC_E_INVALID_DATA)
	CASE_SCODE(RPC_E_INVALID_PARAMETER)
	CASE_SCODE(RPC_E_CANTCALLOUT_AGAIN)
	CASE_SCODE(RPC_E_UNEXPECTED)

	CASE_SCODE(DATA_S_SAMEFORMATETC)
	CASE_SCODE(VIEW_E_DRAW)
	CASE_SCODE(VIEW_S_ALREADY_FROZEN)

	CASE_SCODE(CACHE_E_NOCACHE_UPDATED)
	CASE_SCODE(CACHE_S_FORMATETC_NOTSUPPORTED)
	CASE_SCODE(CACHE_S_SAMECACHE)
	CASE_SCODE(CACHE_S_SOMECACHES_NOTUPDATED)

	CASE_SCODE(MK_E_CONNECTMANUALLY)
	CASE_SCODE(MK_E_EXCEEDEDDEADLINE)
	CASE_SCODE(MK_E_NEEDGENERIC)
	CASE_SCODE(MK_E_UNAVAILABLE)
	CASE_SCODE(MK_E_SYNTAX)
	CASE_SCODE(MK_E_NOOBJECT)
	CASE_SCODE(MK_E_INVALIDEXTENSION)
	CASE_SCODE(MK_E_INTERMEDIATEINTERFACENOTSUPPORTED)
	CASE_SCODE(MK_E_NOTBINDABLE)
	CASE_SCODE(MK_E_NOTBOUND)
	CASE_SCODE(MK_E_CANTOPENFILE)
	CASE_SCODE(MK_E_MUSTBOTHERUSER)
	CASE_SCODE(MK_E_NOINVERSE)
	CASE_SCODE(MK_E_NOSTORAGE)
	CASE_SCODE(MK_E_NOPREFIX)
	CASE_SCODE(MK_S_REDUCED_TO_SELF)
	CASE_SCODE(MK_S_ME)
	CASE_SCODE(MK_S_HIM)
	CASE_SCODE(MK_S_US)
	CASE_SCODE(MK_S_MONIKERALREADYREGISTERED)

	CASE_SCODE(STG_E_INVALIDFUNCTION)
	CASE_SCODE(STG_E_FILENOTFOUND)
	CASE_SCODE(STG_E_PATHNOTFOUND)
	CASE_SCODE(STG_E_TOOMANYOPENFILES)
	CASE_SCODE(STG_E_ACCESSDENIED)
	CASE_SCODE(STG_E_INVALIDHANDLE)
	CASE_SCODE(STG_E_INSUFFICIENTMEMORY)
	CASE_SCODE(STG_E_INVALIDPOINTER)
	CASE_SCODE(STG_E_NOMOREFILES)
	CASE_SCODE(STG_E_DISKISWRITEPROTECTED)
	CASE_SCODE(STG_E_SEEKERROR)
	CASE_SCODE(STG_E_WRITEFAULT)
	CASE_SCODE(STG_E_READFAULT)
	CASE_SCODE(STG_E_SHAREVIOLATION)
	CASE_SCODE(STG_E_LOCKVIOLATION)
	CASE_SCODE(STG_E_FILEALREADYEXISTS)
	CASE_SCODE(STG_E_INVALIDPARAMETER)
	CASE_SCODE(STG_E_MEDIUMFULL)
	CASE_SCODE(STG_E_ABNORMALAPIEXIT)
	CASE_SCODE(STG_E_INVALIDHEADER)
	CASE_SCODE(STG_E_INVALIDNAME)