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Re: I'm doing similar but why won't work Joaquín M López Muñoz24-May-02 3:54 Joaquín M López Muñoz 24-May-02 3:54  The member function has to be static. Joaquín M López Muñoz Telefónica, Investigación y Desarrollo Re: I'm doing similar but why won't work 24-May-02 4:39 24-May-02 4:39  I tried, but still the same. Re: Holding pointers to functions as values in a std::map Vivek Rajan24-May-02 7:54 Vivek Rajan 24-May-02 7:54  Alexpro wrote: MyMap.insert (pair ("aaa", f1); // error here and the error is Be more type specific than pair(..) Use this statement- MyMap.insert(MyMap.value_type("aaa",f1)); HTH Vivek Change scrollbar colour Nnamdi Onyeyiri24-May-02 1:23 Nnamdi Onyeyiri 24-May-02 1:23  hi, i have a CEdit control and I want to change the default scrollbars colour. i also do not want it to have the Winxp style on windows xp, but do not know how to do this. My control is binded to a class called ECEdit, which is derived from CEdit, I want to put the code for he scrollbar in ECEdit. ================================================== When Your Mind Wonders...Where Does It Go??? Math and 3d books ? Joao Vaz24-May-02 1:04 Joao Vaz 24-May-02 1:04  Someone could advise a good math or 3D book , considering that my math is weak (I didn't give a damn on college) . It have to prepare me to do full blow 3d programming and learning first the basics then the more advanced math concepts. Anyone had read these this books ? Are they good ? Mathematics for 3D Game Programming & Computer Graphics 3D Graphics Programming: Games and Beyond Thanks Cheers, Joao Vaz A person who is nice to you, but rude to the waiter, is not a nice person - Natalie Portman (Padme/Amidala of Star Wars) Re: Math and 3d books ? jan larsen24-May-02 2:56 jan larsen 24-May-02 2:56  I have read 3D Graphics Programming: Games and Beyond, but i don't think that i really got anything usefull from it. I also read the much too tiny chapter on 3D in the "black art of Java Game Programming", and it actually gives a better overall description to get you started (and it has an OOP view as opposed to the other book which uses C). But what really helped was the tutorials in basic vector math that my girlfriend paced me through, and these links: http://chortle.ccsu.ctstateu.edu/vectorLessons/vectorIndex.html and http://members.tripod.com/gamecode/tut/ The first link is the best tutorial on math that i ever saw besides my girlfriends tutorial (and you can't have her, she's MINE!). The second link points to some implementation guides that are only helpfull when you understand the basics. Some books tell you that "it really isn't nescessary to understand the math behind this, just use the formulas in good health", don't buy it!. When you understand the math your'e seeing it all so much clear. "It could have been worse, it could have been ME!" Re: Math and 3d books ? Joao Vaz24-May-02 3:21 Joao Vaz 24-May-02 3:21  Thanks Jansen for the links, they appear to be cool jan larsen wrote: I have read 3D Graphics Programming: Games and Beyond, but i don't think that i really got anything usefull from it. Risking this book from the wishlist ... next ... jan larsen wrote: besides my girlfriends tutorial (and you can't have her, she's MINE!). You jealous guy jan larsen wrote: When you understand the math your'e seeing it all so much clear. Yeap, that was my intention , to really understand the math , I don't like books that throw things at me without explanation ... Thanks again , Jansen Cheers, Joao Vaz A person who is nice to you, but rude to the waiter, is not a nice person - Natalie Portman (Padme/Amidala of Star Wars) Re: Math and 3d books ? Chris Losinger24-May-02 3:06 Chris Losinger 24-May-02 3:06  Foley and Van Damme's book on graphics is one of the standards. it does 2d, 3d, ray tracing, fractals, etc.. -c Cheap oil. It's worth it! ISEffects - effects for images Re: Math and 3d books ? Joao Vaz24-May-02 3:24 Joao Vaz 24-May-02 3:24  Chris Losinger wrote: Foley and Van Damme's book on graphics is one of the standards Okay , it so appears Adding it to wishlist .... done ... 100% processed Thanks Chris Cheers, Joao Vaz A person who is nice to you, but rude to the waiter, is not a nice person - Natalie Portman (Padme/Amidala of Star Wars) Calculation? Zizilamoroso23-May-02 23:54 Zizilamoroso 23-May-02 23:54  LONG first = 1022230205L; LONG second = 1000L; LONG third = first * second; cout << third << endl; This should result in 1022230205000 but it returns 27988552 instead. Am I missing something here? I've tried DWORD also, same result. [VISUAL STUDIO 6.0] [MFC] [WIN98/2] Bluute tette! Re: Calculation? markkuk24-May-02 0:07 markkuk 24-May-02 0:07  The largest LONG is 2147483647, so your calculation causes an overflow. Re: Calculation? Zizilamoroso24-May-02 0:07 Zizilamoroso 24-May-02 0:07  Could be something like that. But I've tried DWORD as well. I thought that the maximum was 9.223.372.036.854.775.807 The maximum you gave is for integers, no? Can a long be negative? [VISUAL STUDIO 6.0] [MFC] [WIN98/2] Bluute tette! Re: Calculation? Joaquín M López Muñoz24-May-02 0:24 Joaquín M López Muñoz 24-May-02 0:24  The maximum value of a DWORD is 4,294,967,295. You're having an overflow. Joaquín M López Muñoz Telefónica, Investigación y Desarrollo Re: Calculation? Zizilamoroso24-May-02 0:27 Zizilamoroso 24-May-02 0:27  Sorry guys. I've noticed that a long only uses 4 bytes. I'm a java programmer and a long is 8 bytes in java [VISUAL STUDIO 6.0] [MFC] [WIN98/2] Bluute tette! Re: Calculation? Nnamdi Onyeyiri24-May-02 0:07 Nnamdi Onyeyiri 24-May-02 0:07  why have you put an L at the end of the numbers? could that be the problem? ================================================== When Your Mind Wonders...Where Does It Go??? Re: Calculation? Zizilamoroso24-May-02 0:09 Zizilamoroso 24-May-02 0:09  If you don't put the L, the compiler assumes that's an integer. We add the L to reserve a bigger memzone. [VISUAL STUDIO 6.0] [MFC] [WIN98/2] Bluute tette! Re: Calculation? Nnamdi Onyeyiri24-May-02 0:17 Nnamdi Onyeyiri 24-May-02 0:17  oh...didnt know that ================================================== When Your Mind Wonders...Where Does It Go??? Re: Calculation? KarstenK24-May-02 0:37 KarstenK 24-May-02 0:37  I don´t think that the L will reserve a bigger memzone. It only says the compiler that the number is to been seen as long, a typ-cast. Try to trace every variable after assign it!! Re: Calculation? Matt Gullett24-May-02 0:29 Matt Gullett 24-May-02 0:29  You've overflowed the LONG. Try __int64. Re: Calculation? Zizilamoroso24-May-02 0:30 Zizilamoroso 24-May-02 0:30  Why do all the languages take there very own amount of bytes for the data types? java-long=8 <-> c++long=4 ... Very confusing [VISUAL STUDIO 6.0] [MFC] [WIN98/2] Bluute tette! Re: Calculation? Joaquín M López Muñoz24-May-02 0:32 Joaquín M López Muñoz 24-May-02 0:32  Type sizes in C++ are implementation-dependant. The standard only dictates the minimum size. However, for most (all?) 32-bit compilers, sizes are just like in VC++. The next version of C++ standard most likely will include types with fixed size, like int32, int64 etc., to aid in the developing of cross-platform code. Joaquín M López Muñoz Telefónica, Investigación y Desarrollo Re: Calculation? Matt Gullett24-May-02 0:59 Matt Gullett 24-May-02 0:59  who knows? Re: Calculation? Zizilamoroso24-May-02 0:38 Zizilamoroso 24-May-02 0:38  If I use a double, that will do too? A double is 8 bytes, msdn says so. [VISUAL STUDIO 6.0] [MFC] [WIN98/2] Bluute tette! Re: Calculation? rrrado24-May-02 0:43 rrrado 24-May-02 0:43  double is not integer, but floating point use hyper Re: Calculation? Matt Gullett24-May-02 1:01 Matt Gullett 24-May-02 1:01  I'm curious as to why you are adverse to using __int64?

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