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You need another Class Factory. Use the DECLARE_CLASSFACTORY_SINGLETON macro. In this case all COM-clients get the same instance. In this case your COM-Object must be threadsafe !
Greetings
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Even with singleton COM objects if it is an in-process component then you'd still get separate notifications from multiple EXE clients. You would either have to make the component out-process or CoCreateInstance it from one EXE and load it up into the Running Object Table (ROT) using RegisterActiveObject and grab a reference to it from the second EXE using GetActiveObject.
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That did the trick. Thanks a lot!
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Quesiton:
i encounter the trouble when i invoke execmthod.(wmi)
the return error is WBEM_E_INVALID_METHOD_PARAMETERS.
I have a specail situation than standard one.
that is the method's input parameter is also an wmi class.(it is defined by my bios)
therefore, when i invoke getmethod() to get input param object, I can't direct put data into property by put() method.
(because the property is defined inside the wmi class)
so i invoke the getobject to get the new input param object.
And i put the data into the property.
Final, i use the new input param object for the execmethod's input param.
And the error appears.
Who can help me to sovle such problem?
thanks
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What is TLB file? What Regtlib does? Does it create any specific kind of structure in the Registry under HKEY_CLASS_ROOT while registring the TLB file?
Ajay kumar, Sr System Analyst
Satyam Computers, Banglore
India
ajay.kumar.ind@gmail.com
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TLB[^]
From MSDN -
RegTLib is used for .tlb registration for stdole2.tlb. Regtlib.exe calls the LoadTypeLib and RegisterTypeLib application program interfaces (APIs) on the type library (.tlb or .olb) file that is passed in.
hiajay wrote: Does it create any specific kind of structure in the Registry under HKEY_CLASS_ROOT while registring the TLB file?
Yes, TLB registration is done under HKEY_CLASSES_ROOT\TypeLib.
FYI, if you are working with COM Interop in .NET, then you may want to look at
tlbimp.exe[^]
tlbexp.exe[^]
Sohail
modified 21-Apr-21 21:01pm.
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What about C++ based TLB.What are the subkey created inside HKEY_CLASSES_ROOT\TypeLib
Thanks
Ajay
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hiajay wrote: C++ based TLB
TypeLibrary is independent of C++
I would suggest going through the following link to understand TypeLibrary
http://msdn2.microsoft.com/en-us/library/aa366757.aspx[^]
Also, reading "Essential COM" or "Inside COM" book will be helpful.
Sohail
modified 21-Apr-21 21:01pm.
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Hello
What are the best resources / books to start learning COM?
Thanx
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There are a lot of good articles here at CP.
go into All Topics, MFC/C++ >> COM/DCOM/COM+ section, check out, for instance the beginners articles.
There are, of course, a pletora of good books about COM. A nice one is Don Box's Essential COM [^]
If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.
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I can advise the Microsoft author "Beck Zaratian"... Book names is "Programmer's Guide". I can sale mine? if you want?
What is this¿
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And so you suggest a title you're selling out?
If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.
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![Rose | [Rose]](https://codeproject.freetls.fastly.net/script/Forums/Images/rose.gif) 50$ + cargo expenses!
What is this¿
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So.. Might i leaving the preference to you... Actually, there is 1 sample in this book care about COM. Maybe you know, have only "TowerCtrl" sample. When I saw ur forum msg.. i acted without thought... But this book explaining all about the ActiveX programming using ATL or MFC of course as introduction. Sorry friend. Actually this is a development kid what about the Microsoft System Engineering. I'd like to sale it. If you want to build a career on the Software Development I can sale to all of them as development kid.(50$) Because I am feeling sorry with buying it. If you obstinate for COM pls take a look at the http://www.amazon.com by searching as "developers workshop ATL/COM"... You will be able to see many section care about ATL/COM..
Yours sincerely.
-- modified at 14:41 Friday 2nd November, 2007
What is this¿
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Hi all.
How can I get the coordinates IHTMLLIElement (Highlights, Latest releases, Using your computer, ..) at www.microsoft.com
code:
pDoc2 - pointer to the document frame containing element
pElement - pointer at the element
Text - text links
void CExplorerWindow::GetLinkRect(CComPtr<ihtmldocument2> pDoc2, CComQIPtr<ihtmlelement,&iid_ihtmlelement> pElement, BSTR Text, LPRECT Rect)
{
long Top = 0;
long Hight = 0;
long Left = 0;
long Width = 0;
CComPtr<idispatch> pDisp = NULL;
if (pWebBrowser2)
{
pWebBrowser2->get_Document (&pDisp);
if (pDisp)
{
CComPtr<ihtmldocument2> pDoc = NULL;
pDisp->QueryInterface (IID_IHTMLDocument2, (void **) &pDoc);
if (pDoc)
{
CComPtr<ihtmlframescollection2> m_frame = NULL;
pDoc->get_frames(&m_frame);
if (m_frame)
{
long len = 0;
m_frame->get_length (&len);
if (len)
{
CComQIPtr<ihtmlelement> pEl ;
if (SUCCEEDED(pDoc2->get_body(&pEl)))
{
CComQIPtr<ihtmlbodyelement> pBodyElement ;
pBodyElement = pEl;
if (pBodyElement)
{
CComQIPtr<ihtmltxtrange> pTxtRange;
pBodyElement->createTextRange(&pTxtRange);
if (pTxtRange)
{
if (pTxtRange->moveToElementText(pElement) == S_OK)
{
VARIANT_BOOL ok;
if (pTxtRange->findText(Text,wcslen(Text),0,&ok) == S_OK)
{
CComQIPtr<ihtmltextrangemetrics2> pTextRangeMetrics2;
pTextRangeMetrics2 = pTxtRange;
CComQIPtr<ihtmlrectcollection> ptrRectColl;
CComQIPtr<ihtmlrect> ptrHTMLRect;
if (pTextRangeMetrics2->getClientRects(&ptrRectColl) == S_OK)
{
long Len;
ptrRectColl->get_length(&Len);
if (Len)
{
VARIANT VarInd, VarDisp;
VarInd.vt = VT_I4;
for(int i = 0; i < Len;i++)
{
VarInd.lVal = i;
ptrRectColl->item (&VarInd, &VarDisp);
ptrHTMLRect = VarDisp.pdispVal;
long Top = 0;
long Right = 0;
long Left = 0;
long Bottom = 0;
if (ptrHTMLRect)
{
ptrHTMLRect->get_left (&Left);
ptrHTMLRect->get_top (&Top);
ptrHTMLRect->get_right (&Right);
ptrHTMLRect->get_bottom(&Bottom);
//!!! Left, Top, Right, Bottom - 0
}
SetRect(Rect, Left, Top, Right, Bottom);
}
}
else
{
pElement->get_offsetHeight(&Hight);
pElement->get_offsetWidth(&Width);
pElement->get_offsetTop(&Top);
pElement->get_offsetLeft(&Left);
IHTMLElement* pParentElement = NULL;
while (SUCCEEDED(pElement->get_offsetParent(&pParentElement)))
{
if (!pParentElement) break;
long ParentLeft, ParentTop;
pParentElement->get_offsetTop(&ParentTop);
pParentElement->get_offsetLeft(&ParentLeft);
Top += ParentTop;
Left +=ParentLeft;
pElement = pParentElement;
pParentElement->Release();
}
}
ptrRectColl.Detach();
}
}
}
}
}
}
}
else // no frames
{
CComQIPtr<ihtmlelement2> pElement2(pElement);
CComPtr<ihtmlrect> BoundingRect;
if (pElement2)
{
if (SUCCEEDED(pElement2->getBoundingClientRect(&BoundingRect)) && BoundingRect)
{
BoundingRect->get_top(&Top);
BoundingRect->get_left(&Left);
}
else
{
Top = 0; Left = 0;
}
}
pElement->get_offsetHeight(&Hight);
pElement->get_offsetWidth(&Width);
SetRect(Rect, Left, Top, Left + Width, Top + Hight);
}
}
else //m_frame == 0
{
CComQIPtr<ihtmlelement2> pElement2(pElement);
CComPtr<ihtmlrect> BoundingRect;
if (pElement2)
{
if (SUCCEEDED(pElement2->getBoundingClientRect(&BoundingRect)) && BoundingRect)
{
BoundingRect->get_top(&Top);
BoundingRect->get_left(&Left);
}
else
{
Top = 0; Left = 0;
}
}
pElement->get_offsetHeight(&Hight);
pElement->get_offsetWidth(&Width);
SetRect(Rect, Left, Top, Left + Width, Top + Hight);
}
}
}
}
if (IsRectEmpty(Rect)) Beep(200,100); - only if pElement == Highlights, Latest releases, Using your computer, ..
}
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I am trying to extract the words and punctuation from a word document. I am having a heck of a time finding thorough documentation on the strings to pass (Ex: L"Document", L"Words", L”Open”, etc.) and the patterns to use in the calls. The code I am using has been extracted and tweaked from the MS support site examples. What I have found is a good start except it all stops short of showing how to grab the words from the file. This code runs but it does not actually pull the words from the file in the line:
AutoWrap(DISPATCH_PROPERTYGET|DISPATCH_METHOD, &rVal, pDoc.pdispVal, L"Words", 1, parm[0]);
The Code:
HRESULT AutoWrap(int autoType, VARIANT *pvResult, IDispatch *pDisp, LPOLESTR ptName, int cArgs...) {
// Reduced code...
// Get DISPID for name passed...
hr = pDisp->GetIDsOfNames(IID_NULL, &ptName, 1, LOCALE_USER_DEFAULT, &dispID);
// Handle special-case for property-puts!
if(autoType & DISPATCH_PROPERTYPUT) {
dp.cNamedArgs = 1;
dp.rgdispidNamedArgs = &dispidNamed;
}
// Make the call!
hr = pDisp->Invoke(dispID, IID_NULL, LOCALE_SYSTEM_DEFAULT, autoType, &dp, pvResult, NULL, NULL);
return hr;
}
int main(int argc, char* argv[]){
// Initialize the OLE Library...
OleInitialize(NULL);
// Set WordApp = CreateObject Word.Application
{
CLSID clsid;
CLSIDFromProgID(L"Word.Application", &clsid);
HRESULT hr = CoCreateInstance(clsid, NULL, CLSCTX_LOCAL_SERVER|CLSCTX_INPROC_SERVER, IID_IDispatch, (void **)&rVal.pdispVal);
// WordApp . DisplayAlerts = 0
rVal.vt = VT_I4;
rVal.lVal = 0;
AutoWrap(DISPATCH_PROPERTYPUT, NULL, pWordApp.pdispVal, L"DisplayAlerts", 1, rVal);
VariantClear(&rVal);
// WordApp . Documents . Open wordPath , 0 , 1
AutoWrap(DISPATCH_PROPERTYGET|DISPATCH_METHOD, &pDoc, pWordApp.pdispVal,
L"Documents", 0);
parm[1].vt = VT_I4;
parm[1].lVal = 0;
parm[2].vt = VT_I4;
parm[2].lVal = 1;
AutoWrap(DISPATCH_METHOD, NULL, pDoc.pdispVal, L"Open", 3, parm[2], parm[1], parm[0]);
// Set pDoc = WordApp . Documents 1
parm[0].vt = VT_I4;
parm[0].lVal = 1;
AutoWrap(DISPATCH_PROPERTYGET|DISPATCH_METHOD, &pDoc, pWordApp.pdispVal, L"Documents", 1, parm[0]);
// Get count of words in document
AutoWrap(DISPATCH_PROPERTYGET|DISPATCH_METHOD, &pWords, pDoc.pdispVal, L"Words", 0);
AutoWrap(DISPATCH_PROPERTYGET|DISPATCH_METHOD, &rVal, pWords.pdispVal, "count", 0);
long endVali = rVal.lVal;
i.vt = VT_I4;
for(i.lVal=1; i.lVal<=endVali; i.lVal++) {
VariantCopy(&parm[1], &i);
parm[0].vt = VT_I4;
parm[0].lVal = 1;
AutoWrap(DISPATCH_PROPERTYGET|DISPATCH_METHOD, &rVal, pDoc.pdispVal, L"Words", 1, parm[0]);
wcstombs_s(0, buf, 5, rVal.bstrVal, 512);
::MessageBoxA(NULL, buf, "Word ", 0x10000);
VariantClear(&rVal);
}
}
AutoWrap(DISPATCH_METHOD, NULL, pDoc.pdispVal, L"Close", 0);
AutoWrap(DISPATCH_METHOD, NULL, pWordApp.pdispVal, L"Quit", 0);
// Close the OLE Library...
OleUninitialize();
}
Can someone help debug this code or at least tell me where I can find documentation that show the hierarchy of calls/strings to pass in order to get the information needed from the Word2003 document? Thanks in advance for your help!
wtg3
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I have an ActiveX control for embeding in web page with opbject tag.
Now two problems:
1. I want to load data from internet location(like http://myserver/data.txt) from within ActiveX.
2. Get an IStream object of the data stream
Thanks
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Try to use IBindStatusCallback interface.
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Hai all
I'm using the active desktop Interface to get the current destop item count using the function GetDesktopItemCount(&count,0);
But on my desktop there is more than 10 things and the count value got by GetDesktopItemCount() is '1'.Why is it so.
Please reply.
My OS is XP.
Thanks in Advance
Robs
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The scenario I have is, I have a COM+ application configured with a Role name "Users". I have added "BUILTIN\Administrators" and "myuser" to role "Users". User "myuser" is not a member of "BUILTIN\Administrators".
Now If the application runs under currently logged-in user, IsUserInRole() retuns true for user "myuser".
If the application is running under "myuser", then IsUserInRole() returns false for user "myuser", however if I remove "BUILTIN\Administrators" from role "Users" then IsUserInRole() returns true for user "myuser".
Could anybody please explain this behaviour of IsUserInRole()?
Thanks in advance
Cheers,
Suresh
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Hello,
I'd like to know if it's possible for a JavaScript executed by the browser to send information to a browser helper object (BHO) also running in this browser?
The reason is that I'd like to store the login information (the login functionality is implemented in JavaScript) in my BHO instead of a cookie.
Is something like that possible? By the way, a server-side session based solution is not possible in my case.
Thanks,
Constantin
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Use QueryInterface to discover whether the class implements IProvideClassInfo. From there you can discover the type information of the class.
DoEvents: Generating unexpected recursion since 1991
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Thanks, but not all objects implement this interface. I need reliable method wich will be suitable for all objects!
ISQ 469907496
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