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Re: Copying an automation object? Steve S7-Mar-04 22:00 Steve S 7-Mar-04 22:00  You don't. At least, not by doing what you're doing. That's like saying that I've overwritten your email address in my address-book with someone else's address, why aren't you them? You can use automation to enumerate the open documents, and then open them in the second copy, but that's about it. You can force the first instance to save all changes, and then get the second one to reload, but why? What's so special about the first instance of Word you have that means you want another one 'just like it'...? Steve S Re: Copying an automation object? Zee man8-Mar-04 4:04 Zee man 8-Mar-04 4:04  Thanks for suggestion So I can't do it? Thats depressing since I not only needed the documents but also what buttons like BOLD, ITALIC were pressed or was the word in Print Preview mode or normal mode etc. Actually my actual goal is that I want to transfer the word to another machine with its state intact. I figured that if I could do it on one machine then doing it on multiple would be easy. So there is no other method available other than saving the document in a file and reloading it??? We can't copy the object's attributes and paste them to another object somehow? Thanks. Regards, Zahid Re: Copying an automation object? Steve S8-Mar-04 4:33 Steve S 8-Mar-04 4:33  No you can't. That's a qualified "no". If you're doing it for disaster recovery purposes, then it might well be worth spending the time writing a clone routine that for a given document replicates it's content, cursor position etc to another instance on a separate machine. You could query every property and set them on another instance, but it would take a very long time in two senses. Firstly, this would introduce a noticeable delay to the user (for noticeable, read unacceptable). Secondly, it's going to take a long time to cover all the properties. Steve S How to make clickable/ draggable shapes Anonymous4-Mar-04 21:24 Anonymous 4-Mar-04 21:24  i am having trouble making a shape(be it rectangle or a circle) that is clickable and draggable. im using visual c++ 6.0 help me pls. thanks opening an Excel file Liate2-Mar-04 5:37 Liate 2-Mar-04 5:37  Hi, I am using COM to access Excel and read from an existing Excel file. I tried to use a smart pointer but had a problem with that so I am using GetIdsOfNames for calling the function. However, I don't seem to be able to correctly call the function Open (of WorkBooks). In VB it is possible to send only the file name, but from what I have seen in C++ I have to give 12 parameters (!). It seems that I don't know what they should be... Can someone please send me a code snippet of a successfull call to this open function? thanks! Re: opening an Excel file Steve S2-Mar-04 6:24 Steve S 2-Mar-04 6:24  If you don't know what they are, then chances are they are optional parameters. You can handle this by passing a variant that has a particular makeup, namely v.vt = VT_ERROR; v.scode = DISP_E_PARAMNOTFOUND; and using the variant for any 'optional' arguments. Steve S Re: opening an Excel file Liate2-Mar-04 19:55 Liate 2-Mar-04 19:55  This is exatly what I was looking for! problem is solved. thanks. Problem while destroying SafeArray mandarpb1-Mar-04 22:09 mandarpb 1-Mar-04 22:09  Currently I am developing an application, which uses SafeArray to pass UDT. When I create SafeArray at server side and destoy it at client side, there is no issue. But when I create SafeArray at client side, and tries to destoy it at server side, the method returns with HRESULT values (error 0x800703E6)-"Invalid access to memory location" . The procedure at both ends as below - SafeArray consists of array of SafeArrays. So first create & access root SafeArray, fill it. Then access SafeArray at level 2, fill it, unaccess it , unaccess root level SafeArray, destroy root level SafeArray. It works in client side, ut fails at server side. Re: Problem while destroying SafeArray Steve S1-Mar-04 22:22 Steve S 1-Mar-04 22:22  What arguments are you passing to the SafeArrayCreate function to create the outer and inner ones Steve S Re: Problem while destroying SafeArray Anonymous2-Mar-04 19:35 Anonymous 2-Mar-04 19:35  1. The client code for creation is - SafeArrayCreate( VT_VARIANT, 1, &saBounds) where saBounds[] = (0, 20}, It consists of other SafeArrays and normal data types like INT, BSTR. 2. Passed to server as - SetData(SAFEARRAY **psaData) 3. At server side - hr = SafeArrayDestroy( *psaProjConfig ) 4. The hr is S_OK at step 3. 5. But when method returns, client throws error as "Invalid access to memory location" Thanks for the interest shown. Regards, Mandar Re: Problem while destroying SafeArray Steve S2-Mar-04 23:21 Steve S 2-Mar-04 23:21  1-4 No problem, that's exactly right. 5. Is the parameter [in,out] by any chance? If so, that's your problem. You need to do 4. hr = SafeArrayDestroy(*psaProjConfig); *psaProjConfig = NULL; That tells OLEAUT32 (which contains the automation marshalling code) that there is nothing to marshall back. Without that step, the marshaller at the client end will be trying to marshall freed memory. Hope that helps Steve S Re: Problem while destroying SafeArray Anonymous5-Mar-04 3:04 Anonymous 5-Mar-04 3:04  Thanks Steve. Prevoiusly SafeArray was [in] parameter. As pointed out by you, I make it [in,out] parameter as we are changing its value. But till I am getting error after returning the method. Re: Problem while destroying SafeArray Steve S7-Mar-04 21:56 Steve S 7-Mar-04 21:56  But are you really changing the value? In my example, after destroying the SafeArray on the server side, I set the value to be NULL. Since it's an in/out, you pass not 'SAFEARRAY*' but 'SAFEARRAY**', of course. I know 'Mr.Prakash' says it's not safe to destroy the array on the server side, but that isn't true. I think it's still failing because the automation marshaller is trying to send back the deleted safearray. Steve S Re: Problem while destroying SafeArray Anonymous10-Mar-04 2:06 Anonymous 10-Mar-04 2:06  Hi, I solved the problem. I write the code to destoying the SafeArray at Client side only, after returnung method from Server. My method has SafeArray as a [in] parameter. Now it is working properly. Thank for the help. Re: Problem while destroying SafeArray Prakash Nadar6-Mar-04 6:45 Prakash Nadar 6-Mar-04 6:45  mandarpb wrote: But when I create SafeArray at client side, and tries to destoy it at server side I guess it should not be done, pointers should be destroyed by the owner of the pointer i.e client in this case. This space is empty. Re: Problem while destroying SafeArray Anonymous10-Mar-04 2:07 Anonymous 10-Mar-04 2:07  Hi, Yes, your solution is right. Thank for the help. Regards, Mandar variant arrays.. safee ullah29-Feb-04 21:08 safee ullah 29-Feb-04 21:08  any place to get detailed info on variant arrays..and how to use them?? Re: variant arrays.. Steve S1-Mar-04 0:12 Steve S 1-Mar-04 0:12  MSDN. A variant array is just that, an array of VARIANT types, use just like any other kind of SAFEARRAY, except of course, that your basic array type is VARIANT rather than BSTR or whatever. It's worth remembering that SafeArrayGetElement and SafeArrayPutElement deal with COPYING the data they work with, so Get gives you a new, second, copy and Put will not care what you do with the original you pass it. This is true for other "managed" types (IUnknown, BSTR etc) not just VARIANTs. Of course, your element type is determined by the .vt member of each element, not by the type of the array, but each element is the same size Steve S variant types.. anand12312329-Feb-04 20:06 anand123123 29-Feb-04 20:06  guys i have a variant..being returned by a method..how do i get its vt..and also how do i then extract the value from this variant.. thanks -anand Re: variant types.. ian mariano29-Feb-04 20:45 ian mariano 29-Feb-04 20:45  If v is the variable the VARIANT is returned in, then v.vt is the type (VARTYPE) VARIANT and VARIANTARG Ian Mariano - http://www.ian-space.com/ "We are all wave equations in the information matrix of the universe" - me Re: variant types.. safee ullah29-Feb-04 21:03 safee ullah 29-Feb-04 21:03  hey thanks ian.. one more thing plz..how do i then get the value from this variant? thanks Re: variant types.. Steve S1-Mar-04 0:16 Steve S 1-Mar-04 0:16  Depends what it is. There are various macros beginning V_ that you might find useful. Say you have VARIANT v; HRESULT x = myobj.mycall(...,...,..., &v); You can have code like this: switch(V_VT(&v)) { case VT_BSTR: // Returned a string // V_BSTR(&v) is the BSTR being passed back... break; case VT_I4: // Returned a 'long' // V_I4(&v) is the number and so on. Does that help? Steve S Re: variant types.. ian mariano1-Mar-04 11:39 ian mariano 1-Mar-04 11:39  Dang! You beat me to it Ian Mariano - http://www.ian-space.com/ "We are all wave equations in the information matrix of the universe" - me Re: variant types.. anand1231232-Mar-04 18:03 anand123123 2-Mar-04 18:03  Thanks a lot people... Using SetWindowRgn in a control causes a memory leak when the control is loaded dynamically Steef29-Feb-04 5:48 Steef 29-Feb-04 5:48  Hi, I've created a control with rounded corners by calling SetWindowRgn. If you place this control on a VB-form and keep on loading/unloading the form, a memory leak appears. If you remove the call to SetWindowRgn, there's no memory leak. MSDN says that you should delete a region after a call to SetWindowRgn because Windows will delete it when it is finished with it, but it seems to me this moment is not until the program exits. Has anyone any noticed also noticed this ?

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