mirror of https://github.com/tongzx/nt5src
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
594 lines
16 KiB
594 lines
16 KiB
/*
|
|
OLE SERVER DEMO
|
|
Doc.c
|
|
|
|
This file contains document methods and various document-related support
|
|
functions.
|
|
|
|
(c) Copyright Microsoft Corp. 1990 - 1992 All Rights Reserved
|
|
*/
|
|
|
|
/*
|
|
Important Note:
|
|
|
|
No method should ever dispatch a DDE message or allow a DDE message to
|
|
be dispatched.
|
|
Therefore, no method should ever enter a message dispatch loop.
|
|
Also, a method should not show a dialog or message box, because the
|
|
processing of the dialog box messages will allow DDE messages to be
|
|
dispatched.
|
|
*/
|
|
|
|
|
|
|
|
#define SERVERONLY
|
|
#include <windows.h>
|
|
#include <ole.h>
|
|
|
|
#include "srvrdemo.h"
|
|
|
|
/* AssociateClient
|
|
* ---------------
|
|
*
|
|
* Add a client to the list of clients associated with an object.
|
|
*
|
|
* This function is necessary only because ServerDemo does not create object
|
|
* structures as they are requested, but rather has a fixed set of objects.
|
|
* When DocGetObject is called with a NULL object name, the entire
|
|
* document is requested, but ServerDemo does not currently support making
|
|
* the entire document an object, so DocGetObject returns one object.
|
|
* That object now goes by two names: NULL and its real name. Therefore
|
|
* we need to keep track of both lpoleclient's that were passed to
|
|
* DocGetObject. Ideally, DocGetObject should always create a new OBJ
|
|
* structure containing a pointer (or some reference) to the object's native
|
|
* data and also containing one lpoleclient.
|
|
*
|
|
* LPOLECLIENT lpoleclient - the client to be associated with the object.
|
|
* LPOBJ lpobj - the object
|
|
*
|
|
* RETURNS: TRUE if successful
|
|
* FALSE if out of memory
|
|
*
|
|
* CUSTOMIZATION: Server Demo specific
|
|
*
|
|
*/
|
|
static BOOL AssociateClient (LPOLECLIENT lpoleclient, LPOBJ lpobj)
|
|
{
|
|
INT i;
|
|
for (i=0; i < clpoleclient; i++)
|
|
{
|
|
if (lpobj->lpoleclient[i]==lpoleclient)
|
|
{
|
|
return TRUE;
|
|
}
|
|
if (lpobj->lpoleclient[i]==NULL)
|
|
{
|
|
lpobj->lpoleclient[i]=lpoleclient;
|
|
return TRUE;
|
|
}
|
|
}
|
|
return FALSE;
|
|
}
|
|
|
|
|
|
|
|
/* CreateNewDoc
|
|
* ------------
|
|
*
|
|
* If lhdoc == NULL then we must register the new document by calling
|
|
* OleRegisterServerDoc, which will return a new handle which will be stored
|
|
* in docMain.lhdoc.
|
|
* Also if lhdoc==NULL then this document is being created at the request of
|
|
* the user, not of the client library.
|
|
*
|
|
* LONG lhdoc - Document handle
|
|
* LPSTR lpszDoc - Title of the new document
|
|
* DOCTYPE doctype - What type of document is being created
|
|
*
|
|
* RETURNS: TRUE if successful, FALSE otherwise.
|
|
*
|
|
* CUSTOMIZATION: Re-implement
|
|
*
|
|
*/
|
|
BOOL CreateNewDoc (LONG lhdoc, LPSTR lpszDoc, DOCTYPE doctype)
|
|
{
|
|
INT i;
|
|
|
|
// Fill in the fields of the document structure.
|
|
|
|
docMain.doctype = doctype;
|
|
docMain.oledoc.lpvtbl= &docvtbl;
|
|
|
|
if (lhdoc == 0)
|
|
{
|
|
if (OLE_OK != OleRegisterServerDoc
|
|
(srvrMain.lhsrvr,
|
|
lpszDoc,
|
|
(LPOLESERVERDOC) &docMain,
|
|
(LHSERVERDOC FAR *) &docMain.lhdoc))
|
|
return FALSE;
|
|
}
|
|
else
|
|
docMain.lhdoc = lhdoc;
|
|
|
|
// Reset all the flags because no object numbers have been used.
|
|
for (i=1; i <= cfObjNums; i++)
|
|
docMain.rgfObjNums[i] = FALSE;
|
|
|
|
fDocChanged = FALSE;
|
|
|
|
SetTitle (lpszDoc, doctype == doctypeEmbedded);
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
|
|
/* DestroyDoc
|
|
* ----------
|
|
*
|
|
* Free all memory that had been allocated for a document.
|
|
*
|
|
*
|
|
* CUSTOMIZATION: Re-implement. Your application will probably use some
|
|
* other method for enumerating all the objects in a document.
|
|
* ServerDemo enumerates the child windows, but if each object
|
|
* does not have its own window, this will not work.
|
|
*
|
|
*/
|
|
VOID DestroyDoc (VOID)
|
|
{
|
|
HWND hwnd;
|
|
HWND hwndNext;
|
|
|
|
// Delete all object windows.
|
|
hwnd = SelectedObjectWindow();
|
|
while (hwnd)
|
|
{
|
|
hwndNext = GetWindow (hwnd, GW_HWNDNEXT);
|
|
// Each object window frees its own memory upon receiving WM_DESTROY.
|
|
DestroyWindow (hwnd);
|
|
hwnd = hwndNext;
|
|
}
|
|
|
|
if (docMain.aName)
|
|
{
|
|
GlobalDeleteAtom (docMain.aName);
|
|
docMain.aName = '\0';
|
|
}
|
|
|
|
if (docMain.hpal)
|
|
DeleteObject (docMain.hpal);
|
|
}
|
|
|
|
|
|
|
|
/* DocClose DOCUMENT "Close" METHOD
|
|
* --------
|
|
*
|
|
* The library calls this method to unconditionally close the document.
|
|
*
|
|
* LPOLESERVERDOC lpoledoc - The server document to close
|
|
*
|
|
* RETURNS: Return value from RevokeDoc.
|
|
*
|
|
* CUSTOMIZATION: None
|
|
*
|
|
*/
|
|
OLESTATUS APIENTRY DocClose (LPOLESERVERDOC lpoledoc)
|
|
{
|
|
return RevokeDoc();
|
|
}
|
|
|
|
|
|
|
|
/* DocExecute DOCUMENT "Execute" METHOD
|
|
* ----------
|
|
*
|
|
* This application does not support the execution of DDE execution commands.
|
|
*
|
|
* LPOLESERVERDOC lpoledoc - The server document
|
|
* HANDLE hCommands - DDE execute commands
|
|
*
|
|
* RETURNS: OLE_ERROR_COMMAND
|
|
*
|
|
* CUSTOMIZATION: Re-implement if your application supports the execution of
|
|
* DDE commands.
|
|
*
|
|
*/
|
|
OLESTATUS APIENTRY DocExecute (LPOLESERVERDOC lpoledoc, HANDLE hCommands)
|
|
{
|
|
return OLE_ERROR_COMMAND;
|
|
}
|
|
|
|
|
|
|
|
/* DocGetObject DOCUMENT "GetObject" METHOD
|
|
* ------------
|
|
*
|
|
* The library uses this method to get an object's structure for the
|
|
* client. Memory needs to be allocated and initialized here for this.
|
|
* A NULL string indicates that the client has an embedded object
|
|
* which was started from Create, CreateFromTemplate, or Edit, but not Open.
|
|
*
|
|
* First see if the object name is NULL. If so, you would ordinarily
|
|
* return the entire document, but Server Demo returns the selected object.
|
|
* If the object name is not NULL, then go through the list of objects,
|
|
* searching for one with that name. Return an error if there is not one.
|
|
*
|
|
* LPOLESERVERDOC lpoledoc - The server document
|
|
* OLE_LPCSTR lpszObjectName - The name of the object to get data for
|
|
* LPOLEOBJECT FAR *lplpoleobject - The object's data is put here
|
|
* LPOLECLIENT lpoleclient - The client structure
|
|
*
|
|
* RETURNS: OLE_OK
|
|
* OLE_ERROR_NAME if object not found
|
|
* OLE_ERROR_MEMORY if no more memory to store lpoleclient
|
|
*
|
|
* CUSTOMIZATION: Re-implement.
|
|
* lpszObjectName == "" indicates that the whole document
|
|
* should be the object returned.
|
|
*
|
|
*/
|
|
OLESTATUS APIENTRY DocGetObject
|
|
(LPOLESERVERDOC lpoledoc, OLE_LPCSTR lpszObjectName,
|
|
LPOLEOBJECT FAR *lplpoleobject, LPOLECLIENT lpoleclient)
|
|
{
|
|
HWND hwnd;
|
|
ATOM aName;
|
|
LPOBJ lpobj;
|
|
|
|
|
|
if (lpszObjectName == NULL || lpszObjectName[0] == '\0')
|
|
{
|
|
// Return a new object or the selected object.
|
|
hwnd = SelectedObjectWindow();
|
|
lpobj = hwnd ? HwndToLpobj (hwnd) : CreateNewObj (FALSE);
|
|
*lplpoleobject = (LPOLEOBJECT) lpobj;
|
|
// Associate client with object.
|
|
if (!AssociateClient (lpoleclient, lpobj))
|
|
return OLE_ERROR_MEMORY;
|
|
return OLE_OK;
|
|
}
|
|
|
|
if (!(aName = GlobalFindAtom (lpszObjectName)))
|
|
return OLE_ERROR_NAME;
|
|
|
|
hwnd = SelectedObjectWindow();
|
|
|
|
// Go through all the child windows and find the window whose name
|
|
// matches the given object name.
|
|
|
|
while (hwnd)
|
|
{
|
|
lpobj = HwndToLpobj (hwnd);
|
|
|
|
if (aName == lpobj->aName)
|
|
{
|
|
// Return the object with the matching name.
|
|
*lplpoleobject = (LPOLEOBJECT) lpobj;
|
|
// Associate client with the object.
|
|
if (!AssociateClient (lpoleclient, lpobj))
|
|
return OLE_ERROR_MEMORY;
|
|
return OLE_OK;
|
|
}
|
|
hwnd = GetWindow (hwnd, GW_HWNDNEXT);
|
|
}
|
|
|
|
if (((DOCPTR)lpoledoc)->doctype == doctypeEmbedded)
|
|
{
|
|
lpobj = CreateNewObj (FALSE);
|
|
*lplpoleobject = (LPOLEOBJECT) lpobj;
|
|
|
|
// Associate client with object.
|
|
if (!AssociateClient (lpoleclient, lpobj))
|
|
return OLE_ERROR_MEMORY;
|
|
return OLE_OK;
|
|
}
|
|
|
|
// Object with name lpszObjName was not found.
|
|
return OLE_ERROR_NAME;
|
|
}
|
|
|
|
/* DocRelease DOCUMENT "Release" METHOD
|
|
* ----------
|
|
*
|
|
* The library uses this method to notify the server that a revoked
|
|
* document has finally finished all conversations, and can be
|
|
* destroyed.
|
|
* It sets fWaitingForDocRelease to FALSE so a new document can be created
|
|
* and the user can continue working.
|
|
*
|
|
* LPOLESERVERDOC lpoledoc - The server document
|
|
*
|
|
* RETURNS: OLE_OK
|
|
*
|
|
* CUSTOMIZATION: None
|
|
*
|
|
*/
|
|
OLESTATUS APIENTRY DocRelease (LPOLESERVERDOC lpoledoc)
|
|
{
|
|
fWaitingForDocRelease = FALSE;
|
|
// Free all memory that has been allocated for the document.
|
|
DestroyDoc();
|
|
|
|
return OLE_OK;
|
|
}
|
|
|
|
|
|
|
|
/* DocSave DOCUMENT "Save" METHOD
|
|
* -------
|
|
*
|
|
* Save document to a file.
|
|
*
|
|
* LPOLESERVERDOC lpoledoc - The document to save
|
|
*
|
|
* RETURNS: OLE_OK
|
|
*
|
|
* CUSTOMIZATION: None
|
|
*
|
|
*/
|
|
OLESTATUS APIENTRY DocSave (LPOLESERVERDOC lpoledoc)
|
|
{
|
|
if (docMain.doctype == doctypeFromFile)
|
|
{
|
|
// No "File Save As" dialog box will be brought up because the
|
|
// file name is already known.
|
|
return SaveDoc() ? OLE_OK : OLE_ERROR_GENERIC;
|
|
}
|
|
else
|
|
return OLE_ERROR_GENERIC;
|
|
}
|
|
|
|
|
|
|
|
/* DocSetDocDimensions DOCUMENT "SetDocDimensions" METHOD
|
|
* -------------------
|
|
*
|
|
* The library calls this method to tell the server the bounds on
|
|
* the target device for rendering the document.
|
|
* A call to this method is ignored for linked objects because the size of
|
|
* a linked document depends only on the source file.
|
|
*
|
|
* LPOLESERVERDOC lpoledoc - The server document
|
|
* CONST LPRECT lprect - The target size in MM_HIMETRIC units
|
|
*
|
|
* RETURNS: OLE_OK
|
|
*
|
|
* CUSTOMIZATION: Re-implement
|
|
* How an object is sized is application-specific. (Server Demo
|
|
* uses MoveWindow.)
|
|
*
|
|
*/
|
|
OLESTATUS APIENTRY DocSetDocDimensions
|
|
(LPOLESERVERDOC lpoledoc, OLE_CONST RECT FAR * lprect)
|
|
{
|
|
if (docMain.doctype == doctypeEmbedded)
|
|
{
|
|
RECT rect = *lprect;
|
|
|
|
// the units are in HIMETRIC
|
|
rect.right = rect.right - rect.left;
|
|
// the following was bottom - top
|
|
rect.bottom = rect.top - rect.bottom;
|
|
|
|
HiMetricToDevice ( (LPPOINT) &rect.right );
|
|
MoveWindow (SelectedObjectWindow(), 0, 0,
|
|
rect.right + 2 * GetSystemMetrics(SM_CXFRAME),
|
|
rect.bottom + 2 * GetSystemMetrics(SM_CYFRAME),
|
|
TRUE);
|
|
/* If for some reason your application needs to notify the client that
|
|
the data has changed because DocSetDocDimensions has been called,
|
|
then notify the client here.
|
|
SendDocMsg (OLE_CHANGED);
|
|
*/
|
|
}
|
|
return OLE_OK;
|
|
}
|
|
|
|
|
|
|
|
/* DocSetHostNames DOCUMENT "SetHostNames" METHOD
|
|
* ---------------
|
|
*
|
|
* The library uses this method to set the name of the document
|
|
* window.
|
|
* All this function does is change the title bar text, although it could
|
|
* do more if necesary.
|
|
* This function is only called for embedded objects; linked objects
|
|
* use their filenames for the title bar text.
|
|
*
|
|
* LPOLESERVERDOC lpoledoc - The server document
|
|
* OLE_LPCSTR lpszClient - The name of the client
|
|
* OLE_LPCSTR lpszDoc - The client's name for the document
|
|
*
|
|
* RETURNS: OLE_OK
|
|
*
|
|
* CUSTOMIZATION: None
|
|
*
|
|
*/
|
|
OLESTATUS APIENTRY DocSetHostNames
|
|
(LPOLESERVERDOC lpoledoc, OLE_LPCSTR lpszClient, OLE_LPCSTR lpszDoc)
|
|
{
|
|
SetTitle ((LPSTR)lpszDoc, TRUE);
|
|
lstrcpy ((LPSTR) szClient, lpszClient);
|
|
lstrcpy ((LPSTR) szClientDoc, Abbrev((LPSTR)lpszDoc));
|
|
UpdateFileMenu (IDM_UPDATE);
|
|
return OLE_OK;
|
|
}
|
|
|
|
|
|
|
|
/* DocSetColorScheme DOCUMENT "SetColorScheme" METHOD
|
|
* -----------------
|
|
*
|
|
* The client calls this method to suggest a color scheme (palette) for
|
|
* the server to use.
|
|
* In Server Demo the document's palette is never actually used because each
|
|
* object has its own palette. See ObjSetColorScheme.
|
|
*
|
|
* LPOLESERVERDOC lpoledoc - The server document
|
|
* CONST LOGPALETTE FAR * lppal - Suggested palette
|
|
*
|
|
* RETURNS: OLE_ERROR_PALETTE if CreatePalette fails,
|
|
* OLE_OK otherwise
|
|
*
|
|
*
|
|
* CUSTOMIZATION: If your application supports color schemes, then this
|
|
* function is a good example of how to create and store
|
|
* a palette.
|
|
*/
|
|
OLESTATUS APIENTRY DocSetColorScheme
|
|
(LPOLESERVERDOC lpoledoc, OLE_CONST LOGPALETTE FAR * lppal)
|
|
{
|
|
HPALETTE hpal = CreatePalette (lppal);
|
|
|
|
if (hpal==NULL)
|
|
return OLE_ERROR_PALETTE;
|
|
|
|
if (docMain.hpal)
|
|
{
|
|
// Delete old palette
|
|
DeleteObject (docMain.hpal);
|
|
}
|
|
// Store handle to new palette
|
|
docMain.hpal = hpal;
|
|
return OLE_OK;
|
|
}
|
|
|
|
|
|
|
|
/* RevokeDoc
|
|
* ---------
|
|
*
|
|
* Call OleRevokeServerDoc.
|
|
* If the return value is OLE_WAIT_FOR_BUSY, then set fWaitingForDocRelease
|
|
* and enter a message-dispatch loop until fWaitingForDocRelease is reset.
|
|
* As long as fWaitingForDocRelease is set, the user interface will be
|
|
* disabled so that the user will not be able to manipulate the document.
|
|
* When the DocRelease method is called, it will reset fWaitingForDocRelease,
|
|
* allowing RevokeDoc to free the document's memory and return.
|
|
*
|
|
* This is essentially a way to make an asynchronous operation synchronous.
|
|
* We need to wait until the old document is revoked before we can delete
|
|
* its data and create a new one.
|
|
*
|
|
* Note that we cannot call RevokeDoc from a method because it is illegal to
|
|
* enter a message-dispatch loop within a method.
|
|
*
|
|
* RETURNS: The return value of OleRevokeServerDoc.
|
|
*
|
|
* CUSTOMIZATION: lhdoc may need to be passed in as a parameter if your
|
|
* application does not have a global variable corresponding
|
|
* to docMain.
|
|
*
|
|
*/
|
|
OLESTATUS RevokeDoc (VOID)
|
|
{
|
|
OLESTATUS olestatus;
|
|
|
|
if ((olestatus = OleRevokeServerDoc(docMain.lhdoc)) > OLE_WAIT_FOR_RELEASE)
|
|
DestroyDoc();
|
|
|
|
docMain.lhdoc = 0; // A NULL handle indicates that the document
|
|
// has been revoked or is being revoked.
|
|
return olestatus;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* SaveChangesOption
|
|
* -----------------
|
|
*
|
|
* Give the user the opportunity to save changes to the current document
|
|
* before continuing.
|
|
*
|
|
* BOOL *pfUpdateLater - Will be set to TRUE if the client does not accept
|
|
* the update and needs to be updated when the document
|
|
* is closed. In that case, OLE_CLOSED will be sent.
|
|
*
|
|
* RETURNS: IDYES, IDNO, or IDCANCEL
|
|
*
|
|
* CUSTOMIZATION: None
|
|
*
|
|
*/
|
|
INT SaveChangesOption (BOOL *pfUpdateLater)
|
|
{
|
|
INT nReply;
|
|
CHAR szBuf[cchFilenameMax];
|
|
|
|
*pfUpdateLater = FALSE;
|
|
|
|
if (fDocChanged)
|
|
{
|
|
CHAR szTmp[cchFilenameMax];
|
|
|
|
if (docMain.aName)
|
|
GlobalGetAtomName (docMain.aName, szTmp, cchFilenameMax);
|
|
else
|
|
szTmp[0] = '\0';
|
|
|
|
if (docMain.doctype == doctypeEmbedded)
|
|
wsprintf (szBuf, "The object has been changed.\n\nUpdate %s before closing the object?", Abbrev (szTmp));
|
|
else
|
|
lstrcpy (szBuf, (LPSTR) "Save changes?");
|
|
|
|
nReply = MessageBox (hwndMain, szBuf, szAppName,
|
|
MB_ICONEXCLAMATION | MB_YESNOCANCEL);
|
|
|
|
switch (nReply)
|
|
{
|
|
case IDYES:
|
|
if (docMain.doctype != doctypeEmbedded)
|
|
SaveDoc();
|
|
else
|
|
switch (OleSavedServerDoc (docMain.lhdoc))
|
|
{
|
|
case OLE_ERROR_CANT_UPDATE_CLIENT:
|
|
*pfUpdateLater = TRUE;
|
|
break;
|
|
case OLE_OK:
|
|
break;
|
|
default:
|
|
ErrorBox ("Fatal Error: Cannot update.");
|
|
}
|
|
return IDYES;
|
|
case IDNO:
|
|
return IDNO;
|
|
case IDCANCEL:
|
|
return IDCANCEL;
|
|
}
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
|
|
/* SendDocMsg
|
|
* ----------
|
|
*
|
|
* This function sends messages to all the objects in a document when
|
|
* the document has changed.
|
|
*
|
|
* WORD wMessage - The message to send
|
|
*
|
|
* CUSTOMIZATION: The means of enumerating all the objects in a document
|
|
* is application specific.
|
|
*/
|
|
VOID SendDocMsg (WORD wMessage)
|
|
{
|
|
HWND hwnd;
|
|
|
|
// Get handle to first object window.
|
|
hwnd = SelectedObjectWindow();
|
|
|
|
// Send message to all object windows.
|
|
while (hwnd)
|
|
{
|
|
SendObjMsg (HwndToLpobj(hwnd), wMessage);
|
|
hwnd = GetWindow (hwnd, GW_HWNDNEXT);
|
|
}
|
|
}
|
|
|
|
|