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Static members/methods (Beginner) Jimmy Ehrnström11-Jul-01 1:40 Jimmy Ehrnström 11-Jul-01 1:40  Hi! Maybe somebody could help me out by pointing out what's wrong with the following code: #include <iostream.h> class CResult { public: static void SetFoo(int); static int GetFoo(); private: static int foo; }; void CResult::SetFoo(int f) { foo = f; } int CResult::GetFoo() { return(foo); } int main(int argc, char* argv[]) { CResult::SetFoo(17); cout << CResult::GetFoo(); return(0); } At the linking stage of the compilation (VC++ 6.0) I get the following error: Result.obj : error LNK2001: unresolved external symbol "private: static int CResult::foo" (?foo@CResult@@0HA) Static___Win32_Debug/Static.exe : fatal error LNK1120: 1 unresolved externals Since I'm far from experienced in C++/VC++ I can't figure out how to get the above sample to work. I've probably misunderstood how static members/methods work, so any help would be greatly appreciated. Thanks, Jimmy Re: Static members/methods (Beginner) Tomasz Sowinski11-Jul-01 1:54 Tomasz Sowinski 11-Jul-01 1:54  To get rid of the compilation errors, add the following line after declaration of CResult: static int CResult::foo = 0; Making foo/GetFoo/SetFoo static is another story. You know that all instances of CResult will share one foo, right? Tomasz Sowinski -- http://www.shooltz.com Re: Static members/methods (Beginner) Tomasz Sowinski11-Jul-01 1:58 Tomasz Sowinski 11-Jul-01 1:58  oops, typing error: no need for another static. Just this: int CResult::foo = 0; Tomasz Sowinski -- http://www.shooltz.com Re: Static members/methods (Beginner) Jimmy Ehrnström11-Jul-01 2:13 Jimmy Ehrnström 11-Jul-01 2:13  That's it. Now it's compiling and working without a hitch. Thanks a lot! Enumerating messages Gennady Oster11-Jul-01 1:15 Gennady Oster 11-Jul-01 1:15  Hi! I have a problem enumerating messages in the exe/dll. May be I was so lucky to fail on bug? Here is what I do (m_IDs defined as CDWordArray): BOOL CEventSource::Enumerate() { m_IDs.RemoveAll(); return (EnumResourceNames(m_hModule,RT_MESSAGETABLE,EnumIDsProc,(LONG)this)); } BOOL CEventSource::EnumIDsProc(HMODULE hModule,LPCTSTR lpType, LPTSTR lpName, LONG par) { CEventSource * pMe; pMe=(CEventSource *)par; pMe->m_IDs.Add((DWORD)lpName); return true; } Both functions return true, m_IDs contain the single element =1, doesn't matter, is there such event ID in the file, or not. To check the whole structure, I've replaced RT_MESSAGETABLE with RT_DIALOG and received the full list of dialog's IDs. So something wrong with messagetable. But what ? Any help will be greatly appreciated. Thanks in advance. Regards, Gennady Re: Enumerating messages Tomasz Sowinski11-Jul-01 1:46 Tomasz Sowinski 11-Jul-01 1:46  All messages are stored in one RT_MESSAGETABLE. Have a look on MESSAGE_RESOURCE_DATA and friends. Tomasz Sowinski -- http://www.shooltz.com Re: Enumerating messages Gennady Oster11-Jul-01 2:03 Gennady Oster 11-Jul-01 2:03  I suspected something like this. But first, the description of RT_MESSAGETABLE constant (message-table ENTRY) confused me. Second, I cannot discover, how to get the pointer to MESSAGE_RESOURCE_DATA. And last. If FormatMessage knows the resource structure, why EnumResourceNames doesn't ? If EnumResourceNames knows the structure of all other resources, why it doesn't recognize the message table. Why it is so peculiar. I guess, you're not the MS representative, so you may interpret the last questions as rhetorical. Thanks. Regards, Gennady Re: Enumerating messages Tomasz Sowinski11-Jul-01 2:12 Tomasz Sowinski 11-Jul-01 2:12  I cannot discover, how to get the pointer to MESSAGE_RESOURCE_DATA. LoadResource, then LockResource. If EnumResourceNames knows the structure of all other resources... Not sure about that. EnumResourceNames knows about PE file structure and knows how to interpret the resource directory. Note that you can add your own resource formats to a PE file. They're just embedded in the image and are 'raw bytes'; only your app knows how to deal with them. Tomasz Sowinski -- http://www.shooltz.com Re: Enumerating messages Gennady Oster11-Jul-01 2:29 Gennady Oster 11-Jul-01 2:29  Thanks. As I've understand: FindResource LoadResource LockResource Deal with MESSAGE_RESOURCE_DATA, _BLOCK and _ENTRY I can't believe that nobody had done it for message table once and forever! Message table is standard and explotable enough to justify this effort. Thanks once more. Regards, Gennady Re: Enumerating messages Tomasz Sowinski11-Jul-01 2:42 Tomasz Sowinski 11-Jul-01 2:42  Yeah, Find/Load/LockResource works for me with app-defined resource format. I don't think you'll have much trouble with message tables. Cheers, Tomasz Sowinski -- http://www.shooltz.com mouse over ?? Pony10-Jul-01 21:19 Pony 10-Jul-01 21:19  How can i get the word that has a mouse pointed over it? (note : Any words that appear on screen, not only on the active window.) Debugging Question (Beginner) matthias s.10-Jul-01 20:34 matthias s. 10-Jul-01 20:34  Hello, I need to debug an ActiveX Exe. This executable is launched from an NT Service when the service is started. I've got the source code for both executables but can't figure out how to debug them at the same time. Can anybody help me? Thanks in advance. Matthias Re: Debugging Question (Beginner) Tim Deveaux11-Jul-01 8:35 Tim Deveaux 11-Jul-01 8:35  Hmmm... you might try placing DebugBreak calls (or _asm int 3) in both modules. When these get hit, you'll be promted to debug the application. I'm thinking you might end up with two copies of the debugger running, which could get a bit wonky, but might work. Definitely safer to experiment with this stuff by starting the service manually rather than automatically - you can really mess up your session with this stuff if you're not careful! There are other approaches - I'm not _exactly_ sure what you need/want. Re: Debugging Question (Beginner) 8-Aug-01 21:53 8-Aug-01 21:53  Did you get help with debugging your NT Service. I can help you with this if you still need help. Matthew Tracing Splitter 10-Jul-01 19:56 10-Jul-01 19:56  Hello, I have a splitter window in my application. Is it possible to forbid user changes to these windows sizes? I don't want the splitter to be moved anywhere. And the second question. Is it possible to trace splitter in some way and correct its position if user trys to move it further than I want? Thank you in advance, Andrei the Adroit Re: Tracing Splitter coder847210-Jul-01 21:16 coder8472 10-Jul-01 21:16  create a class derived from CSplitterWnd and override OnMouseMove and OnLButtonDown maXallion   "Look for bugs, I hate bugs!" - Warden, The Mummy   www.maxallion.de - coded evil & more PhotoShop SDK HyoSoo Moon10-Jul-01 19:08 HyoSoo Moon 10-Jul-01 19:08  ======PhotoShop SDK====== I´ve changed the original sample source code from VB to VC++, and succeeded to start photoshop using but got a problem with make a new document. No error, just nothing happened! I guess it may wrong that PSConstants in PhotoShopTypeLibrary have been changed to NumericType Variables. Because VC++ doesn´t have PSConstants, I had to use long type variables. ex)phKeyResolution(VB)---> 1383296116(VC++) Do you have any experiance in this kind of project? Any help would be greate. SQL (.Jet) useage otvac10-Jul-01 16:45 otvac 10-Jul-01 16:45  I am working with a DAO dataset. When I open the recordset with "SELECT * FROM [MyTable] WHERE [MyField] = m_lMyLong", the Database tells me I dont have enough parameters. If I change m_lMyLong to a number i.e. 10664, the recordset opens fine. It just won't accept the variable (which is set and right according to the debugger). Do I need to bracket the variable name with something? All help appreciated. Richard Re: SQL (.Jet) useage markkuk10-Jul-01 21:04 markkuk 10-Jul-01 21:04  The SQL statement isn't handled by the C++ compiler, it's interpreted at runtime by the database driver. This means you can't use C++ variable names in SQL statements. You should use CString::Format() or sprintf() to insert the value of the variable in the SQL statement before passing it to Open(). Re: SQL (.Jet) useage otvac11-Jul-01 1:34 otvac 11-Jul-01 1:34  Thanks, I'll give it a try, but the Field I'm filtering is a long. We'll see what happens when I query it with a string. As you can see, I'm real new at this, and can use all the help I can get. Richard Changing color... John Uhlenbrock10-Jul-01 14:00 John Uhlenbrock 10-Jul-01 14:00  I am looking to change the background color of a static text box. Howz it done..? Thanks, John Re: Changing color... jerry0davis10-Jul-01 22:40 jerry0davis 10-Jul-01 22:40  Have a look at the message WM_CTLCOLOR. Create a subclass of CStatic and override the WM_CTLCOLOR message. You should get a function afx_msg HBRUSH OnCtlColor( CDC* pDC, CWnd* pWnd, UINT nCtlColor ); Simply set the text colour when nCtlColor = CTLCOLOR_STATIC OnChange() RobJones10-Jul-01 13:05 RobJones 10-Jul-01 13:05  Hello, Is there a way to implement the OnChange() function for a int member vairable that is defined through a class? I have a int that changes every second like in a count down timer. I need to updateData(TRUE) every second for this int so it reflects the correct value, the only way I know how to do this is through the OnChange() function like you would use with a edit box control. Thanks, Rob Jones Re: OnChange() Christian Graus10-Jul-01 13:22 Christian Graus 10-Jul-01 13:22  If it happens every second, what's wrong with OnTimer ? Christian #include "std_disclaimer.h" People who love sausage and respect the law should never watch either one being made. The things that come to those who wait are usually the things left by those who got there first. Re: OnChange() RobJones10-Jul-01 13:42 RobJones 10-Jul-01 13:42  I initialize the int's through a OnStartButton funtion.. In OnTimer I am comparing the values of the 2 int's and displaying the count down time. Once I press the start button it initializes the correct int value and the OnTimer displays the correct count down value but when I do a TRACE on the count down int it shows that the int stays the same value as when I first initialized it and it only updates the one time(in trace). I need for the value to be updated every time it changes so when the OnTimer is comparing the two values and they reach a defined value my program executes a event. I was using a edit box to define the inital value of the int but now I'm pulling the value from a CString. Rob

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