C / C++ / MFC

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Re: ActiveX Control Question Ernest Laurentin25-Apr-02 7:13 Ernest Laurentin 25-Apr-02 7:13  If you plan to have this property "Var1" persistent to your control, then declare it (make it member) inside of your object not global. Why did you decide to create that property as global instead of being a member variable? "Dirty hands lead to important discovery..." - Thomas Edison Re: ActiveX Control Question Shayna25-Apr-02 8:26 Shayna 25-Apr-02 8:26  If I don't make it global, then in MS Word, after I close the userform, the value of "Var1" will be lost. I cannot draw anything on the Control, which should be added to the document. Re: ActiveX Control Question Ernest Laurentin25-Apr-02 9:19 Ernest Laurentin 25-Apr-02 9:19  Understand now! Is this a big problem for you to "save" the property value before you close the userform and "set it back" when you need to display that form back again? It looks to me that you want a different property (value) for each control that you use but you want only one variable to store it. In that case, one of the best approach is to have that variable as a member of your component (activex or object). Global variable is not *in my opinion* an elegant option. Good luck! "Dirty hands lead to important discovery..." - Thomas Edison Re: ActiveX Control Question Shayna25-Apr-02 9:24 Shayna 25-Apr-02 9:24  Acturally this Property1 is like a current time property. When a user click on a macro in MS Word, the program gets the current time and I would like to keep this time value with the current control. Then 5 minutes later, this user click on this macro again, it will add another control on the document, but the time value should be different. When I set the Var1 variable as a member variable, the value cannot keep as long as I close the user form. Any ideas? Question for MC++ Forum! Albert Pascual25-Apr-02 6:13 Albert Pascual 25-Apr-02 6:13  I am going to have to post this message in these forum as I can't find any other better like "MC++" When using the Visual C++ .NET version 7.0 with framework version 1.0 ( I believe there are the latest), when using the debugger and looking at unmanaged pointers, I cannot see the pointer address under memory window and also unmanaged structs cannot be displayed in the watch window. Is there any reason why? Thanks Al Re: Question for MC++ Forum! Nish Nishant25-Apr-02 6:55 Nish Nishant 25-Apr-02 6:55  Albert Pascual wrote: I am going to have to post this message in these forum as I can't find any other better like "MC++" You sure do know, how to push your point, don't you? Nish The rumours that I am an AI bot are absolutely false. These rumours have been propogated by *them* to focus all the attention on to me, while *their* bots take over the planet. Thank y%%%% Divide by zero. Cannot proceed. Abort(y/y)? Re: Question for MC++ Forum! Albert Pascual25-Apr-02 7:11 Albert Pascual 25-Apr-02 7:11  Yeah! Do you think is going to work? Re: Question for MC++ Forum! Nish Nishant25-Apr-02 8:17 Nish Nishant 25-Apr-02 8:17  Albert Pascual wrote: Yeah! Do you think is going to work? I hope so. I would be interested in an MC++ forum too. Nish The rumours that I am an AI bot are absolutely false. These rumours have been propogated by *them* to focus all the attention on to me, while *their* bots take over the planet. Thank y%%%% Divide by zero. Cannot proceed. Abort(y/y)? help me to load images in a Database and to retrieve them Atilla Selem25-Apr-02 6:10 Atilla Selem 25-Apr-02 6:10  hi, i'm writing a chat App and want people see eachother when they request user picture (.jpg, bmp..etc) from server. i both write server and client side. 1-Do i able to keep the picture of users in Access Database using CDAO MFC classes? or classes of DAO SDK 2-Do i able to retrive and send people again using MFC if so how? 3-Should i need to serialize the picture and send it as if it is a document in binary? 4-How should i think Uploading images of new users? 5-Any better idea of handling images and sending retrieving them on network? Thanks for ur help, Atilla Selem listening to you... Re: help me to load images in a Database and to retrieve them Albert Pascual25-Apr-02 6:17 Albert Pascual 25-Apr-02 6:17  The easiest way is to send the jpg file from the client every times that sends a message to the server. If the bandwith is not a problem! So you don't have to keep a DB in the server side. That's just an idea of course! Cheers Al Re: help me to load images in a Database and to retrieve them Atilla Selem25-Apr-02 6:31 Atilla Selem 25-Apr-02 6:31  how will i do that? using serialization? but think that you should keep all the user pictures as a server since u should succeed to send any one of the user's pic to others who request. or by somehow if u don't want to take responsibility of that you have to contact users to users and make them send pictures to eachother. But they should not be aware of that. i am at that corner of my App and i really think the easiest and efficient way to code. Bandwidth is not problem. But keeping things working is much diffucult. Thanks for all Atilla Selem willing to learn and teach Re: help me to load images in a Database and to retrieve them Albert Pascual25-Apr-02 6:49 Albert Pascual 25-Apr-02 6:49  I don't know your application so I just may be talking bollocks! However if your app is: Server listens in a socket, clients send messages to that socket, server distributes message to all the connected clients. Then when the client application starts, opens a photo.jpg and attaches that file at ever single message going to the server, the server doesn't need to change as it distributes the message and picture together to all connected sockets (clients) If you don't want the user to have to worry about the photo.jpg, in the server you could add all the pictures with username.jpg, when a username connects without a pictures, just push it to that user! Good way to distribute new pictures! Well, that's my idea, however I don't know how did you designed the APP, maybe I am far off your design and to do that will take major changes in the code. Therefor, please ignore this message Hope this helps Al Re: help me to load images in a Database and to retrieve them Carlos Antollini25-Apr-02 6:43 Carlos Antollini 25-Apr-02 6:43  Atilla: Use this Use the functions CADORecordset::GetChunk and CADORecordset::SetChunk Best Regards Carlos Antollini. Sonork ID 100.10529 cantollini Re: help me to load images in a Database and to retrieve them Giles25-Apr-02 6:49 Giles 25-Apr-02 6:49  Uploaded pictures would need to be stored in a binary large object field (BLOB). In SQL these are know as varBinary, in Access it is of the Type OLE. From an ADO point of view, you would use the AppendChunk and GetChunck calls (I think) to pull and put data in. Hope this help, Giles Directory 25-Apr-02 5:45 25-Apr-02 5:45  Is there a way to find which directory the program you are running is located with a simple call? That is when I run a particular exe, can I find which directory the user put this exe in? I tried _getcwd etc but it does not seems to work for me. Thanks in advance. Re: Directory Tom Archer25-Apr-02 5:49 Tom Archer 25-Apr-02 5:49  GetCurrentDirectory Cheers, Tom Archer Author, Inside C# Please note that the opinions expressed in this correspondence do not necessarily reflect the views of the author. Re: Directory Nish Nishant25-Apr-02 6:52 Nish Nishant 25-Apr-02 6:52  Call GetModuleFileName(...) Nish The rumours that I am an AI bot are absolutely false. These rumours have been propogated by *them* to focus all the attention on to me, while *their* bots take over the planet. Thank y%%%% Divide by zero. Cannot proceed. Abort(y/y)? Re: Directory Mike Nordell25-Apr-02 9:17 Mike Nordell 25-Apr-02 9:17  No. You have to get the HMODULE/HINSTANCE of the module (check the virtual memory API) and then qury that one, so it's two API functions to call. If you however do implement it in a function, it can become just one function to call. Re: Directory 25-Apr-02 17:33 25-Apr-02 17:33  Thanks for the hint. By any chance, do you know what the calls are exactly? How do I get the HModule etc? THanks. Re: Directory Ravi Bhavnani25-Apr-02 17:52 Ravi Bhavnani 25-Apr-02 17:52  Here's how: void getAppDir (char* szAppDir) { ::GetModuleFileName (AfxGetInstanceHandle(), szAppDir, _MAX_PATH); char* pPeriod = strrchr (szAppDir, '.'); if (pPeriod != NULL) { *pPeriod = '\0'; } } /ravi "There is always one more bug..." http://www.ravib.com ravib@ravib.com Re: Directory Sameer Maggon25-Apr-02 18:44 Sameer Maggon 25-Apr-02 18:44  Hi, Why won't a simple GetCurrentDirectory Work Re: Directory Ravi Bhavnani25-Apr-02 19:24 Ravi Bhavnani 25-Apr-02 19:24  It will return the current directory (the one to which you've CD'd), which may not be the same as that of the app. /ravi "There is always one more bug..." http://www.ravib.com ravib@ravib.com Argh! Report designer library?? paulccc25-Apr-02 5:33 paulccc 25-Apr-02 5:33  Hi, I'd like to find a report component/library that has a redistributable report designer. In principle, Crystal Reports would be fine, except we can't redistribute the designer, meaning our customers would have to fork out an extra £144 (~$225) to buy Crystal Reports standard themselves (no chance whatsoever - our software is only going to cost £100-200). So, I'm desperately trying to find a report designer we can distribute! As long as it can put graphics and fields on a page, and we can insert data into it, we don't need much else. Due to the short dev time of the project I'd really prefer not to have to write a report designer in-house. Any help very much appreciated. Paul. Re: Argh! Report designer library?? Nick Parker25-Apr-02 6:31 Nick Parker 25-Apr-02 6:31  Paul, I could almost write a book on this topic, I know that I have commented on this subject here before with others. Everytime I read a question like this I feel the need to vent. We ran into the same situation too, looked at the price of Crystal Reports which we have with some of our apps, but the application that I was going to be working on was going to require so many licenses that it wasn't cost effective to use Crystal anymore. We looked and played with several different components however we ended up buying Active Reports from Data Dynamics. This program allows you to import prexisting Crystal or Access report and loads of other options. Here's the kicker, it comes with a royalty free end-user designer control. HTH Nick Parker Re: Argh! Report designer library?? paulccc25-Apr-02 6:35 paulccc 25-Apr-02 6:35  Hi Nick, That sounds interesting.. How well does it integrate with VC++? Paul.

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