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Re: extern? Chris Losinger5-Jan-02 4:14 Chris Losinger 5-Jan-02 4:14  extern tells the compiler "this is what the variable looks like". use it like this: code.h ------ extern int myInt; // this just tells other code that "myInt" is an int, not where it lives (ie. it's address) code1.cpp ------ int myInt; // this allocates the variable code2.cpp ------ #include "code.h" myInt = 5; // use it -c Smaller Animals Software, Inc. Re: extern? Stan the man5-Jan-02 4:19 Stan the man 5-Jan-02 4:19  For char* Text[2] = {"hi","hi there"}; THe extern statement would be extern char* Text[2]; Is this correct? Re: extern? Chris Losinger5-Jan-02 4:24 Chris Losinger 5-Jan-02 4:24  yep, that should do it. -c Smaller Animals Software, Inc. Re: extern? Rick York5-Jan-02 6:48 Rick York 5-Jan-02 6:48  I like to keep these kinds of things all in one file. Here is a couple of macros that help with doing this. // in YourHeader.h #ifdef MAIN #define Global #else #define Global extern #endif // if not initializing Global char *XX[2]; // if you are going to initialize it do this : #ifdef MAIN char *YY[2] = { "String 1", "String 2" }; #else extern char *YY[2]; #endif // in your source code files // do this one and only one time #define MAIN #include "YourHeader.h" // no other source files may contain the MAIN definition Re: extern? Christian Graus5-Jan-02 9:32 Christian Graus 5-Jan-02 9:32  Somewhat of an aside, but globals are of the devil, if you must use them, you should put them into a namespace. Christian I have come to clean zee pooollll. - Michael Martin Dec 30, 2001 Sonork ID 100.10002:MeanManOzI live in Bob's HungOut now Re: extern? Tim Smith5-Jan-02 11:01 Tim Smith 5-Jan-02 11:01  Ewww, I bet you think gotos are the spawn of Satan. Tim Smith Descartes Systems Sciences, Inc. Re: extern? Christian Graus5-Jan-02 11:08 Christian Graus 5-Jan-02 11:08  But of course. NumberOfTimesIHaveUsedGotoInC = 0; Christian I have come to clean zee pooollll. - Michael Martin Dec 30, 2001 Sonork ID 100.10002:MeanManOzI live in Bob's HungOut now Re: extern? David Chamberlain7-Jan-02 7:56 David Chamberlain 7-Jan-02 7:56  As a very "general" rule, you should try to avoid declaring variables in a header file, simply because every source file that includes them will re-create that variable's declaration. If you really want a global variable, you should declare it in a source file, and then when another source file needs to access or update it, declare it again in that source file using extern. Extern says "There is a variable (with memory allocated) somewhere else in the program and it looks like this." Separating your global variables like this helps to keep track of them, because you declare them in the source file where they are "owned," and then use extern for everywhere else where they are "used." While various macros have been developed for use in header files to optionally compile or not compile the extern for variables, this is really just a confusing trick to get the compiler to do what I have described. It's only confusing to you and other programmers, because you still have to find when the original file is to find if the macro #define is made in order to get the original variable declaration. Dave "You can say that again." -- Department of Redundancy Department Tabbed multiple views Nnamdi Onyeyiri5-Jan-02 3:26 Nnamdi Onyeyiri 5-Jan-02 3:26  I am trying to write a program that has an SDI interface, but has three tabs within that. Does anyone know where i can get the code for this, i have checked out the samples on this site and www.codeguru.com, but none of them use a tabbed interface. ================================================== When Your Mind Wonders...Where Does It Go??? How to write a service by VC Vistac5-Jan-02 3:10 Vistac 5-Jan-02 3:10  Hello, How to write a WinNT service by VC, I read MSDN, it seems use ATL, but I can't understand clearly, have some kindly give me an example ?? please email to vistac@ms10.hinet.net Thanks..... Vistac Wu Re: How to write a service by VC Chris Losinger5-Jan-02 3:25 Chris Losinger 5-Jan-02 3:25  did you try looking on this site first? there are many articles on services here. http://www.codeproject.com/system/ -c Smaller Animals Software, Inc. Doc/View Application 5-Jan-02 2:59 5-Jan-02 2:59  Hi All, I’m doing some processing in method of view(CView) and wanted to display result in my document(CDocument). Its my first application for Doc/View Architecture. I’ve created MFC SDI Application from Project Wizard of VC++ 6.0. Please guide me for that. Also I’d like to mention that all my document would be ASCII text ya, kind of notepad application but the content would have to be displayed from background process in code of View. I’d like if someone give me direction for implementing Copy data area from that view. No need to cut and paste. Does this SDI provide me scrolling also when the area will exceed? IS there any change need to be done to introduce scrolling? Thanks a lot for lot of answers -- Sumit Please make a CC of reply at sumit@elitecore.com Re: Doc/View Application Eugene Pustovoyt5-Jan-02 4:21 Eugene Pustovoyt 5-Jan-02 4:21  Hi, You must use the method CView::GetDocument(), that get pointer to the CDocument. Best regards, Eugene Pustovoyt Sonork ID 100.10002:Yaumen Re: Doc/View Application 5-Jan-02 5:13 5-Jan-02 5:13  Hey Eugene, Thanks for your answer, But I'm not aware of how to flow. What methods are used for display? Can you provide me a summery of doing this? Say I have some thread running on my CView::OnNew(). Now this thread returns some result. And I wanted to Display this text output, in multiple lines. I wanted to provide support to copy that text also. Thanks for all help and appritiate lot to smart piece of code for steps and overview. -- Sumit Re: Doc/View Application 5-Jan-02 11:13 5-Jan-02 11:13  It would be better to proccess the information in the document class, then you will have to create a pointer to the document class, extract your information in a function on the view class. Then obtain a dc to the window you would like to display your text in and use DC functions for displaying it. you will be able to create support for copying, as the information is stored in the document. remember if u start a thread from the document class u will have to pass the thread the cview HWND handle if u want to send any windows messages from your thread, also it's not always possible to pass a thread a pointer such as ur Document class pointer, but it sometimes is! Hope this helps in someway. Re: Doc/View Application 6-Jan-02 2:41 6-Jan-02 2:41  Hi, It helps me, but very little. I knew that what I's doing was a little wrong way. But still I'm fix with how to achieve this. See I tell you what I wana achieve. I wanted at "OnOk" of Dialog-Box, I contact to server, get data from there and now i need to display that data. Please Help me. I've simply created and MFC EXE application and changed base class of my view to CEditView. Now in MyView::OnFileNew()I'm Calling DoModal of my dialog-box, I get server IP from there and then do processing and get data which has to be displayed. Please suggest me some programming steps to go further. I'd be happy if someone suggest over some of my previous wrong methods also. Thanks in advance. -- Sumit .dib file Neha5-Jan-02 0:17 Neha 5-Jan-02 0:17  Hi, How can i get a bitmap buffer from a .dib file? Neha Re: .dib file Philip Patrick5-Jan-02 0:23 Philip Patrick 5-Jan-02 0:23  Look in the code of the IconPro sample from Platform SDK. There is a file that is working with DIBs (dib.c) Also look here in this article: DibSection And, you can find a lot of info in "Bitmaps and Palettes" section here, on CodeProject Philip Patrick "Two beer or not two beer?" (Shakesbeer) Web-site: www.saintopatrick.com Re: .dib file Neha5-Jan-02 0:33 Neha 5-Jan-02 0:33  Thanks for the reply. But i feel .dib &.bmp are same in windows. If i write HANDLE hImage = ::LoadImage (AfxGetInstanceHandle(), "d:\\winnt\\prescan3.BMP", IMAGE_BITMAP, 0, 0, LR_LOADFROMFILE ); I will hImage as NULL. Why is it so? Re: .dib file Philip Patrick5-Jan-02 0:43 Philip Patrick 5-Jan-02 0:43  Try to put NULL instead of AfxGetInstanceHandle() This should help, cause when you are loading from file you do not need the Instance handle Philip Patrick "Two beer or not two beer?" (Shakesbeer) Web-site: www.saintopatrick.com Re: .dib file Neha5-Jan-02 1:06 Neha 5-Jan-02 1:06  It works with all other bmp file.But it doesn't work with the file which i renamed from .dib to .bmp. Any idea? Re: .dib file Philip Patrick5-Jan-02 1:27 Philip Patrick 5-Jan-02 1:27  Did you try to open the file with other utilities? Such an IrfanView, or simple Word? And if you can, can you send me that .dib file, so I'll play with it? Philip Patrick "Two beer or not two beer?" (Shakesbeer) Web-site: www.saintopatrick.com Re: .dib file Philip Patrick5-Jan-02 1:40 Philip Patrick 5-Jan-02 1:40  Also, look at DIBLOOK sample in your MSDN. This project supposed to open DIB files as well as BMP file. If it is not, so your .dib is corrupted Philip Patrick "Two beer or not two beer?" (Shakesbeer) Web-site: www.saintopatrick.com What infected the exe ? ColinDavies4-Jan-02 20:11 ColinDavies 4-Jan-02 20:11  Explanation, I have some code that runs in a toplevel windows position, This code never-the less appears to get infected and corrupted by virri on occasions. So I do a couple of CRC checks on the apps initiation to verify if the existing code is also infected. for-example: if( code_infected() ) { Error_message(); Exit(); } else RunTheApp(); Ok simple enough eh! My question is how can I detect what was the malware/nasty that infected my App ? Note all the code is in one exe. I could spawn a process that monitors the app, but this would be liable to be infected as well. Any help welcome ! Thanks. Regardz Colin J Davies Sonork ID 100.9197:ColinI live in Bob's HungOut now A good example of "Fully Managed" coding Re: What infected the exe ? Philip Patrick5-Jan-02 1:53 Philip Patrick 5-Jan-02 1:53  Look for CheckSumMappedFile() in your MSDN. You'll find there all about executable files images Philip Patrick "Two beer or not two beer?" (Shakesbeer) Web-site: www.saintopatrick.com

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